LTH Electronics MXD70 Series User manual

MXD70 SERIES
MANUALS
F1 F2 F3 F4 F5
09:56
MON 1 JUN 2009
CH1:
517.2 µS/cm
i)
ii)
12.3°C

A: 12.28mA
CH2:
9.64 pH
i)
ii)
25.0°C -156mV
CH3:
23.3 %
i)
ii)
28.0°C 2.15Atm


MENU

CAL
MARCH 2019
F1 F2 F3 F4 F5
09:56
MON 1 JUN 2009
CH1:
517.2
µS/cm
i)
ii)
12.3 °C

A: 12.28mA
CH2:
9.64 pH
i)
ii)
25.0 °C -156mV
CH3:
23.3
%
i)
ii)
28.0
°C
2.15Atm


MENU

CAL

MXD73
Quick Start Guide
23 mm 134 mm
25 mm Min
For Cables
And Connectors
Screw Clamp x 4
Gasket Seal
F1 F2 F3 F4 F5
09:56
MON 1 JUN 2009
CH1:
517.2
µS/cm
i)
ii)
12.3 °C

A: 12.28mA
CH2: 9.64 pH
i)
ii)
25.0 °C -156mV
CH3:
23.3 %
i)
ii)
28.0
°C 2.15Atm


MENU

CAL
116 mm
128 mm
TANK 1
Output Option Card Connection Details
NO3 C3 NC3 NO4 C4 NC4 C6 NO6C5 NO5
Output Option Connector
A B C
Relay 3
Normally
Open
Contact
Relay 3
Common
Contact
Relay 3
Normally
Closed
Contact
Relay 4
Normally
Open
Contact
Relay 4
Common
Contact
Relay 4
Normally
Closed
Contact
Relay 5
Normally
Open
Contact
Relay 5
Common
Contact
Relay 6
Normally
Open
Contact
Relay 6
Common
Contact
Modbus A
Connection
(Inverting)
(Rx-/Tx-)
Modbus C
Connection
(0V Reference)
Optional
Modbus B
Connection
(Non-Inverting)
(Rx+/Tx+)
Modbus and 4 Relays Output Option Card Connection Details
NO3 C3 NC3 NO4 C4 NC4
Output Option Connector
E F
Relay 3
Normally
Open
Contact
Relay 3
Common
Contact
Relay 3
Normally
Closed
Contact
Relay 4
Normally
Open
Contact
Relay 4
Common
Contact
Relay 4
Normally
Closed
Contact
Current
Output B “+”
Current
Output “-”
(Common)
Current
Output “-”
(Common)
Current
Output C “+”
Current
Output E “+”
Current
Output F “+”
Current
Output “-”
(Common)
Current
Output D “+”
5 Current Outputs 2 Relays Output Option Card Connection Details
I-
-
-I-
-
-I-
-
-
B C D
NO3 C3 NC3 NO4 C4 NC4 C6 NO6C5 NO5
Output Option Connector
B C D
Relay 3
Normally
Open
Contact
Relay 3
Common
Contact
Relay 3
Normally
Closed
Contact
Relay 4
Normally
Open
Contact
Relay 4
Common
Contact
Relay 4
Normally
Closed
Contact
Relay 5
Normally
Open
Contact
Relay 5
Common
Contact
Relay 6
Normally
Open
Contact
Relay 6
Common
Contact
Current
Output B “+”
Current
Output D “+”
Current
Output C “+”
Current
Output “-”
(Common)
Output Option Card Connection Details.
Available Relays and Current Outputs Vary Depending On Card Type
I-
-
-
Digital Input Connection Details
Digital Input Connector
G12345678
Digital Input Connection Details
SD CARD
DIGITAL INPUTS
OUTPUT OPTION
CH3
CH2
CH1
C
CC
H
HH
1
23
A
B
C
CONDUCTIVITY
G12345678
PH / REDOX ECS CONDUCTIVITY
A A B B G E C
-
E E R R
++ -
A A B B A A B B -R R D D+ + -
I- B+ C+ D+
0/4 - 20mA
-
-
I- B+ C+ D+
-
-
NO3 C3 NC3 NO4 C4 NC4 C6 NO6C5 NO5
85-250V A
-+
L
+
N
-
1 2 0/4-20
mA
I-E E E A+
-
-
NO1 C1 NC1 NO2 C2 NC2
Power &
Standard Outputs
Connector
Output
Option
Channel 2 Channel 3
Channel 1 Digital
Inputs
SD Card
Slot
89 mm Sq
Recomended Panel Cut-Out
Should be 92mm X 92mm
Exact Instrument Conguration Depends
Upon Ordered Specication
MXD73 Instrument Dimensions
The MXD73 Panel Mount Instrument is designed to be ushed mounted and sealed in a
square cut-out in a panel, and is held in place with the four screw clamps provided
Chaul End Lane
Luton
Bedfordshire
LU4 8EZ
England
Power & Standard Outputs Connection Details
CAUTION!
Always remove the main power from the system
before any alterations to the wiring. Ensure that
both power lines are isolated. Make sure that the
power cannot be switched on by accident whilst the
instrument is being connected. For safety reasons
an earth connection must be made to the earth
terminal of this instrument.
Local wiring and safety regulations should be strictly
adhered to when installing this instrument. If the
installation methods and cable types recommended
in this guide are followed, then the instrument will
achieve the levels of EMC protection as specied in
the appropriate manual.
Consult the serial label on the side of the
instrument for supply voltage requirements.
Fitted Options- Power Supply: 24V Output Option Card: 1-Current 2-Relays Channel1: Cond Channel2: Cond Channel3: Cond
Mains 3-Current 0-Relays pH/Redox pH/Redox pH/Redox
3-Current 4-Relays ECS ECS ECS
5-Current 2-Relays DO DO DO
Modbus 4-Relays Aux mA IP Aux mA IP Aux mA IP
SS SS SS
Telephone: [phone]
Fax [phone]
email: [email protected]
Web: www.lth.co.uk
Power + Basic Outputs Connector
Relay 1
Normally Open
Contact
Relay 1
Common
Contact
Relay 1
Normally Closed
Contact
Relay 2
Normally Open
Contact
Relay 2
Common
Contact
Relay 2
Normally
Closed
Contact
NO1 C1 NC1 NO2 C2 NC2
Current
Output “-”
(Common)
Current
Output A ”+”
I- A+
-
-
Standard Outputs Connection Details
Power Supply
“Live” In
Power Supply
“Live” Out
(For Daisy Chaining)
Power Supply
“Neutral In
Power Supply
“Neutral” Out
(For Daisy Chaining)
Protective Earth
(Must Be
Connected)
Earth Earth
Power + Basic Outputs Connector
85V-265V AC/DC Power Supply
Connection Details
Power
Supply
“+” In
Power Supply
“+”Out
(For Daisy Chaining)
Power Supply
“-” In
Power Supply
“-” Out
(For Daisy Chaining)
Protective Earth
(Must Be
Connected)
Earth Earth
Power + Basic Outputs Connector
18V-32V AC/DC Power Supply
Connection Details
MON 1 JUN 2009
09:56
CH1: 517.2 µS/cm TEMP1: 12.3°C
CH2: 9.64 pH
CH3: 23.3%
TEMP2: 25.0°C
TEMP3: 28.0°C
MAIN MENU
DIGITAL INPUTS
CHANNELS


EXIT
4-20mA OUTPUTS
CALIBRATION
SETPOINT / RELAYS

CONFIGURATION
CURSOR
FURTHER MENU
PAGES BELOW

INSTRUMENT
READINGS
CURRENT
DATE / TIME
UNIT STATUS
FURTHER MENU
PAGES ABOVE
MON 1 JUN 2009
09:56
CH1: 517.2 µS/cm TEMP1: 12.3°C
CH2: 9.64 pH
CH3: 23.3%
TEMP2: 25.0°C
TEMP3: 28.0°C
SETPOINT 1 SETUP
INPUT SOURCE:
RANGE:
TRIGGER:
HIGH VALUE:
MODE:
CHANNEL:

SENSOR
0 to 9.999 mS/cm
HIGH
7.500mS/cm
ON/OFF

EXIT
CHANNEL 1 (COND)

LOW
BAND
LATCH HIGH
TRIGGER
HIGH
LATCH LOW 

CURSOR
ADDITIONAL
OPTIONS BELOW
OPTION POP-UP
MON 1 JUN 2009
09:56
CH1: 517.2 µS/cm TEMP1: 12.3°C
CH2: 9.64 pH
CH3: 23.3%
TEMP2: 25.0°C
TEMP3: 28.0°C
CHANNEL 1 SETUP
UNITS:
CELL CONSTANT:
RANGE:
TEMP INPUT SENSOR:
TEMPERATURE UNITS:
MODE:
SIEMENS(S/cm)
1.000
AUTO
PT1000
°C

EXIT



ON-LINE
SECURITY CODE
CODE
ENTER ACCESS
* * *
0
09:56

MON 1 JUN 2009
CH1: 517.2 µS/cm
i) ii)
12.3°C A:12.28mA
CH2: 9.64 pH
i) ii)
25.0°C -156mV
CH3: 23.3 %
i) ii)
28.0°C 50.15 µS/cm


MENUACK
DOSE ALARM
CAL
CURRENT DATE UNIT STATUS
CURRENT TIME
CHANNEL
MESSAGES
CHANNEL SECONDARY
READING ii
CONTEXT SENSITIVE BUTTON FUNCTIONS
CHANNEL PRIMARY
READING
CHANNEL ID
CHANNEL SECONDARY
READING i
CHANNEL ALARM
STATUS
SETPOINT STATUS
LEDS
SETPOINT STATUS
LEDS
ALARM STATUS
LEDS
TANK 1
TANK 3
CHANNEL
LABEL
User Interface Overview
Scrolling Menu Layout
Front Layout
Main Menu Layout
Pop-Up Option Layout
Security Access Pop-Up
To protect the instrument setup
from unauthorised or accidental
tampering, a security access code
system is present. This is
implemented via the instrument’s
menu system which operates in two
modes, “locked”as indicated by a
padlock symbol and “unlocked” as
indicated by a key symbol.
Part No. 6128
Seventh Issue February 2019
Copyright LTH Electronics Ltd.
The default Access Code is: 1000
Front Screen
Current
Output
Bargraphs
Channels
Setup
Setpoint /
Relays Setup
4-20mA
Outputs Setup
Digital
Inputs Setup
Error
Messages
Live Trends
1, 2 & 3*
*Optional Extra
For conguration and calibration information please consult
the operational manuals available online at -
lth.co.uk/index.php/downloads/ or via the adjacent QR code.
A
Brown
B
Black
Anode
Red
Broadley James ProcessProbe™ Polargraphic
Dissolved Oxygen Sensor Cable
Connection Details
Unit Earth TerminalDissolved Oxygen Input Connector
Cathode
White
Link
Link
GPA A B B T C AAP
Green
(Outer Screen)
Sensor Input
Temperature Input
Standard Dissolved Oxygen Input Card Connection Details
Unit Earth Terminal
Dissolved Oxygen Input Connector
GPA A B B T C AAP
Anode
(White Core
Screen)
BrownWhite
Yellow
54D Extension Cable Connection Details
Cable Outer
Screen
Cathode
(White
Core)
Not
Connected
Sensor Input
Temperature Input
Blue Black
Anode
(White Core
Screen)
54D Extension Cable
Sensor Input
Yellow Blue White Black
Temperature Input Cable Outer
Screen
Cathode
(White
Core)
“TC”
(Black)
“CATH”
(White)
“ANOD”
(Red)
“TC”
(Brown)
Green
Temperature Input Sensor Input
Broadley James ProcessProbe™ Sensor Cable
Broadley James ProcessProbe™ Cable To
54D Extension CableConnection Details
Pressure Transmitter
Connection Details
Dissolved Oxygen Input Connector
GPA A B B T C AAP
-+
4-20mA
Suspended Solids Input Card Connection Details
Suspended Solids Input Connector
Cable Screen
Unit Earth Terminal
Green
Red
Black
White
Brown
Orange
Yellow
Turbidity Input Connector
Cable Screen
Unit Earth Terminal
Green
Red
Black
White
Brown
Orange
Yellow
Blue
T30 Turbidity Sensor Cable
Connection Details
Turbidity Input Card Connection Details

Yellow Blue White Black
Drive -
Yellow Sleeve (Screen 2)
Drive +
Clear
(Core)
Electrodeless Conductivity Sensor (ECS40) 54E Cable
Connection Details
Green \ Yellow
(Outer Screen)
Unit Earth Terminal
ECS Input Connector
A A B B -R R D D+ + -
Return +
Green
(Core)
Return -
Red Sleeve (Screen 1)
Sensor Input
Temperature Input
Unit Earth Terminal
ECS Input Connector
A A B B -R R D D+ + -
Yellow Blue
Drive -
Yellow Sleeve (Screen 2)
Drive +
Clear
(Core)
Electrodeless Conductivity Sensor (ECS20) 54H Cable
Connection Details
Green \ Yellow
(Outer Screen)
Return +
Green
(Core)
Return -
Red Sleeve (Screen 1)
Link Link
Sensor Input
Temperature Input
Green
Core
54E Extension Cable
Sensor Input
Yellow Blue White Black
Temperature Input
Clear
Core
Green Core
Screen
Blue Red
Sleve
Green
Core
Yellow Clear
Core
Temperature
Input
ECS20 54H Cable
ECS20 54H Cable To 54E Extension Cable
Connection Details
Yellow
Sleve
Clear Core
Screen
Cable Outer
Screen
Green \
Yellow
Sensor Input
Sensor Input Sensor Input
Electrodeless Conductivity Input Card Connection Details
Yellow Blue White Black
Drive -
Clear Core
Screen
Clear
Core
54E Extension Cable
Connection Details
Cable Outer
Screen
Unit Earth Terminal
ECS Input Connector
A A B B -R R D D+ + -
Green
Core
Return -
Green Core
Screen
Sensor Input
Temperature Input
Anode
(White Core
Screen)
54D Extension Cable
Sensor Input
Yellow White Black
Temperature Input Cable
Outer
Screen
Cathode
(White Core)
“TC”
(Black)
“CATH”
(White)
“ANOD”
(Red)
“TC”
(Brown)
Green
Temperature Input Sensor Input
Broadley James ProcessProbe Sensor Cable
Broadley James ProcessProbe™
Cable To 54D Extension Cable
Connection Details
“TC”
(Red)
“TC”
(Black)
“pH”
(Clear)
“REF”
(Black)
S400 ProcessProbe Cable Connection Details
(Solution Ground Not Fitted)
Smart pH / Redox Input Connector
Link
R E RX0VA B B SG
Link
Temperature Input Sensor Input
TX
Smart pH / Redox Input Card Connection Details
“TC”
(Red)
“TC”
(Black)
“pH”
(Clear)
“GRND”
(Green)
S400 ProcessProbe Cable Connection
Details (Solution Ground Fitted)
Smart pH / Redox Input Connector
Link
R E RX0VA B B SG
“REF”
(Black)
Temperature Input Sensor Input
TX
Smart pH / Redox Input Connector
R E RX0VA B B SG
pH / Redox LN10 Coax Cable (No TC)
Connection Details
Inner Conductor (pH)
Inner Insulator
Conductive Layer
(Must be stripped
back to cable screen)
Outer Insulator
Cable Screen
(Ref)
TX
Link
Smart pH / Redox Input Connector
R E RX0VA B B SG
pH / Redox LN10 Coax Cable With Solution
Ground (No TC) Connection Details
Inner Conductor (pH)
Conductive Layer
(Must be stripped
back to cable screen)
Cable Screen (Ref)
TX
Solution Ground
(Seperate Cable)
Unit Earth TerminalSmart pH / Redox Input Connector
R E RX0VA B B SG
VP6 Detachable Cable Connection Details
(Solution Ground Fitted)
Green \ Yellow
(Outer Screen)
Temperature Input Sensor Input
“RTD IN”
(Green)
“RTD SENSE”
(Grey)
“RTD RTN”
(White)
“AUX”
(Blue)
“Glass”
(Black/Clear)
“Reference”
(Red)
TX
Unit Earth Terminal
Smart pH / Redox Input Connector
R E RX0VA B B SG
Yellow White Black
Reference
(Green Core Screen)
Electrode
(Green Core)
pH 54E Extension Cable Connection Details
(Solution Ground Not Fitted)
Cable Outer
Screen
Temperature Input
Sensor Input
Link
TX
Unit Earth Terminal
Smart pH / Redox Input Connector
R E RX0VA B B SG
Yellow White Black
Reference
(Green Core Screen)
Electrode
(Green Core)
pH 54E Extension Cable Connection Details
(Solution Ground Fitted)
Cable Outer
Screen
Temperature Input
Sensor Input
TX
Solution Ground
(Clear Core)
54E Extension Cable
VP6 Detachable Cable
VP6 Detachable Cable To 54E Extension Cable
Connection Details
Electrode
(Green Core)
Sensor Input
Yellow White Black
Temperature Input
Reference
(Green Core Screen)
Solution Ground
(Clear Core)
Cable Outer
Screen
Temperature Input Sensor Input
“RTD IN”
(Green) “RTD SENSE”
(Grey)
“AUX”
(Blue)
“Reference”
(Red)
“RTD RTN”
(White) “Glass”
(Black/Clear)
Green \ Yellow
(Outer Screen)
Electrode
(Green Core)
54E Extension Cable
Sensor Input
Yellow White Black
Temperature Input
Reference
(Green Core Screen)
Solution Ground
(Clear Core)
“TC”
(Black)
“GRND”
(Green)
“pH”
(Clear)
“TC”
(Red)
“REF”
(Black)
Temperature Input Sensor Input
S400 ProcessProbe Cable
S400 ProcessProbe Cable To 54E Extension Cable
Connection Details
Unit Earth TerminalSmart pH / Redox Input Connector
R E RX0VA B B SG
Hybrid™ SensorTalk™ Probe Cable Connection Details
(Solution Ground Fitted)
Green \ Yellow
(Outer Screen)
Temperature Input Sensor Input
“RTD IN”
(Green)
“SensorTalk
TX” (Grey)
“RTD RTN”
(White)
“AUX”
(Blue)
“Glass”
(Black/Clear)
“Reference”
(Red)
TX
Link
“SensorTalk
Rx” (Pink)
“SensorTalk
0v” (Brown)
SensorTalk Interface
Unit Earth TerminalSmart pH / Redox Input Connector
R E RX0VA B B SG
Digital SensorTalk™ Probe Cable Connection Details
Green \ Yellow
(Outer Screen)
“SensorTalk
TX” (Grey)
TX
“SensorTalk
Rx” (Pink)
“SensorTalk
0v” (Brown)
SensorTalk Interface
Unit Earth Terminal
Smart pH / Redox Input Connector
R E RX0VA B B SG
Clear Core
Clear Core
Screen
Reference
(Green Core
Screen)
Electrode
(Green Core)
Hybrid™ SensorTalk™ 54E Extension Cable
Connection Details (Solution Ground Fitted)
Cable Outer
Screen
Temperature Input
Sensor Input
TX
Solution
Ground
(White) Yellow
Blue Black
Link
Black
“SensorTalk RX”
(Pink) “SensorTalk 0v”
(Brown)
54E Extension Cable
Hybrid SensorTalk Probe Cable
Hybrid™ SensorTalk™ Probe Cable To 54E Extension Cable
Connection Details
Electrode
(Green Core)
Sensor Input
YellowWhite Blue
Temperature Input
Reference (Green
Core Screen)
Clear Core
Cable Outer
Screen
Temperature Input Sensor Input
“RTD IN”
(Green) “SensorTalk Tx”
(Grey)
“AUX”
(Blue)
“Reference”
(Red)
“RTD RTN”
(White) “Glass”
(Black/Clear)
Green \ Yellow
(Outer Screen)
Clear Core
Screen
SensorTalk Interface
SensorTalk Interface
White Core
54D Extension Cable
Sensor Input
Yellow Blue White Black
Temperature Input
Cable
Outer
Screen
Brown
Green Blue Red
Yellow Green \
Yellow
Temperature Input Sensor Input
CMC8/001 Sensor Cable
CMC8/001 Cable To 54D Extension
Cable Connection Details
“C”
White Core
54D Extension Cable
Sensor Input
Yellow Blue White Black
Temperature Input
Cable
Outer
Screen
“E”
Brown
Blue White Black
Yellow Green \
Yellow
Temperature Input Sensor Input
54D Sensor Cable
54D Sensor Cable To 54D Extension Cable Connection Details
“G”
White Core
Screen
Green
(Coaxial Screen)
Brown White
(Coaxial Core)
Conductivity Input Card Connection Details
A A B B G E C
Conventional Conductivity Coax Cable
(CMC8/01 & CMC8/10)
Connection Details
Conventional Conductivity Input Connector
Coaxial
Core
Inner
Insulator
Outer
Insulator
Cable
Screen
A A B B G E C
Unit Earth Terminal
Conventional Conductivity Input Connector
Yellow Blue White Black
Green
(Coaxial Screen)
White
(Coaxial Core)
Brown
Conventional Conductivity 54D Cable Connection Details
Green \ Yellow
(Outer Screen)
Sensor Input
Temperature Input
A A B B G E C
Unit Earth Terminal
Conventional Conductivity Input Connector
Link
Yellow Green RedBlue
Conventional Conductivity Cable (CMC8/001)
Connection Details
Green \ Yellow
(Outer Screen)
Link
Sensor Input
Temperature Input
A A B B G E C
Unit Earth TerminalConventional Conductivity Input Connector
Yellow Blue White Black
White
Core Screen
White
Core
Brown
54D Extension Cable Connection Details
Cable Outer
Screen
Sensor Input
Temperature Input
A A B B G E C
Conventional Conductivity Input Connector
BrownBlue
Conventional Conductivity Cable
(CMC7) Connection Details
Sensor Input
Smart Dissolved Oxygen Input Card Connection Details
Pressure Transmitter
Connection Details
Smart Dissolved Oxygen Input Connector
-
+
4-20mA
A B B P ApC 0vRxTx
A
Brown
B
Black
Anode
Red
Broadley James ProcessProbe™ Polargraphic
Dissolved Oxygen Sensor Cable
Connection Details
Unit Earth
Terminal
Smart Dissolved Oxygen Input Connector
Cathode
White
Link
A B B P ApC 0vRxTx
Green
(Outer Screen)
Sensor Input
Temperature Input
Unit Earth
Terminal
Smart Dissolved Oxygen Input Connector
A B B P ApC 0vRxTx
Green \ Yellow
(Outer Screen)
Temperature Input Sensor Input
“RTD IN”
(Green) “SensorTalk
Tx” (Grey)
“RTD RTN”
(White)
“Cathode”
(Black/Clear)
“Anode”
(Red)
Link
“SensorTalk
Rx”
(Pink)
“SensorTalk
0v” (Brown)
SensorTalk Interface
Hybrid™ SensorTalk™ Probe Cable
Connection Details
White
Black
“SensorTalk RX”
(Pink) “SensorTalk 0v”
(Brown)
54D Extension Cable
Hybrid SensorTalk Probe Cable
Hybrid™ SensorTalk™ Probe Cable To 54D Extension
Cable Connection Details
Cathode
(White Core)
Sensor Input
Yellow Brown Blue
Temperature Input
Anode
(White Core
Screen)
Cable Outer
Screen
Temperature Input Sensor Input
“RTD IN”
(Green) “SensorTalk Tx”
(Grey)
“Anode”
(Red)
“RTD RTN”
(White) “Cathode”
(Black/Clear)
Green \ Yellow
(Outer Screen)
SensorTalk Interface
SensorTalk Interface
Unit Earth
Terminal
Smart Dissolved Oxygen Input Connector
A B B P ApC 0vRxTx
Yellow Anode
(White Core
Screen)
White
Hybrid™ SensorTalk™ 54D Extension Cable
Connection Details
Cathode
(White Core)
Sensor Input
Temperature Input
Black
Link
Brown Blue Cable Outer
Screen
Unit Earth
Terminal
Smart Dissolved Oxygen Input Connector
A B B P ApC 0vRxTx
Green \ Yellow
(Outer Screen)
“SensorTalk
Tx” (Grey)
“SensorTalk
Rx”
(Pink)
“SensorTalk
0v” (Brown)
SensorTalk Interface
OptaProbe™ or Digital SensorTalk™ Probe Cable
Connection Details
Auxiliary mA Input Connector
24V + -
Unit Earth Terminal
Current
Input “-”
(Common)
Current
Input “+”
24V (30mA)
Output
Cable Screen
(If Present)
Auxiliary mA Input Connection Details
Auxiliary mA Input Connector
24V + -
Transmitter / Sensor
+ -
+
-
Power
Supply
Locally Powered Transmitter Loop Connection Details
Loop Mode Set to “mA Input”
Auxiliary mA Input Connector
24V + -
Transmitter / Sensor
+ -
Internally Powered Loop Connection Details
Loop Mode Set to “24V Loop”
(MXD70 powers the loop with 24V)
Auxiliary mA Input Connector
24V + -
Transmitter / Sensor
- +
+
-
Power Supply
(36V Max)
mA
Externally Powered Loop Connection Details
Loop Mode Set to “mA Input”
Auxiliary mA Input Connector
24V + -
Transmitter / Sensor
-+ mA
3 Wire Transmitter Loop Connection Details
(NB. The 24V Can Supply 30mA Max)
Loop Mode Set to “mA Input”
Auxiliary mA Input Card Connection Details
Unit Earth
Terminal
Smart Dissolved Oxygen Input Connector
A B B P ApC 0vRxTx
Yellow Anode
(White Core
Screen)
White
Broadley James ProcessProbe™
54D Extension Cable
Connection Details
Cathode
(White Core)
Sensor Input
Temperature Input
Black Cable Outer
Screen
Sensor Input Connector
Link Link
AABB
RTD
2 Wire RTD
Connection
Sensor Input Connector
AABB
RTD
4 Wire RTD
Connection
Sensor Input Connector
AABB
RTD
3 Wire RTD
Connection
Link
Temperature Connection Details Smart Input Card
Connector
A B B
Link
RTD
2 Wire RTD
Connection
Smart Input Card
Connector
A B B
RTD
3 Wire RTD
Connection
Smart Input Card
Connector
A B B
RTD
4 Wire RTD
Connection
Not Connected

Fitted Options- Power Supply: 24V Output Option Card: 1-Current 2-Relays Channel1: Cond Channel2: Cond Channel3: Cond
Mains 3-Current 0-Relays pH/Redox pH/Redox pH/Redox
3-Current 4-Relays ECS ECS ECS
5-Current 2-Relays DO DO DO
Modbus 4-Relays Aux mA IP Aux mA IP Aux mA IP
SS SS SS
MXD75
Quick Start Guide
Relay Connection Details
MXD75 Instrument Dimensions
Chaul End Lane
Luton
Bedfordshire
LU4 8EZ
England
Telephone: [phone]
Fax [phone]
Email: [email protected]
Web: lth.co.uk
74 mm
300 mm
6 mm x
3 o
8 mm
74 mm
Power Connection Details
CAUTION!
Always remove the main power from the
system before any alterations to the wiring.
Ensure that both power lines are isolated. Make
sure that the power cannot be switched on by
accident whilst the instrument is being
connected. For safety reasons an earth
connection must be made to the earth terminal
of this instrument.
Local wiring and safety regulations should be
strictly adhered to when installing this
instrument. If the installation methods and
cable types recommended in this guide are
followed, then the instrument will achieve the
levels of EMC protection as specied in the
appropriate manual.
Consult the serial label on the side of the
instrument for supply voltage requirements.
Power Supply
“Live” In
Power Supply
“Live” Out
(For Daisy Chaining)
Power Supply
“Neutral” In
Power Supply
“Neutral” Out
(For Daisy Chaining)
Protective Earth
(Must Be Connected)
Earth
L
+N
-
L
+N
-
Earth
Earth
Power Connector
85V-265V AC/DC Power Supply
Connection Details
Power Supply
“+” In
Power Supply
“+” Out
(For Daisy
Chaining)
Power Supply
“-” In
Power Supply
“-” Out
(For Daisy
Chaining)
Protective Earth
(Must Be Connected)
Earth
L
+N
-
L
+N
-
Earth
Earth
Power Connector
18V-32V AC/DC Power Supply
Connection Details
Relay Connection Details
Available Relays Vary Depending On Instrument Conguration
5-6
NO3 C3 NC3
NO2 C2 NC2
NO1 C1 NC1
NO6C6
NO5C5
NO4 C4 NC4
Relay 1
Normally
Open
Contact
Relay 1
Common
Contact
Relay 1
Normally
Closed
Contact
Relay 2
Normally
Open
Contact
Relay 2
Common
Contact
Relay 2
Normally
Closed
Contact
NO1 C1 NC1 NO2 C2 NC2 NC3NO3 C3
Relay 3
Common
Contact
Relay 3
Normally
Open
Contact
Relay 3
Normally
Closed
Contact
Relay 4
Normally
Open
Contact
Relay 4
Common
Contact
Relay 4
Normally
Closed
Contact
Relay 5
Normally
Open
Contact
Relay 5
Common
Contact
Relay 6
Normally
Closed
Contact
NO4 C4 NC4 C5 NO5 C6 NO6
Relay 6
Normally
Open
Contact
Relays 1 - 3 Connector Relays 4 - 6 Connector
LTH recommends using No.
10 x 1¼ inch round head
screws or similar for
mounting.
Ensure top screw head is 8
mm proud.
Care must be taken when
tting the unit on uneven
walls or surfaces. Do not
over stress the mounting
lugs.
Over tightening the
mounting screws could also
break the lugs. Drill Hole Dimensions
SKT5
SKT6
SKT7
HEADER A
HEADER B
HEADER C
HEADER D OR E
COMMS A
COMMS B
CH3
CH2
CH1
85-250V 15W
_
~1 4 7
258
36
G
G
G
DIGITAL
INPUTS
SENSOR INPUT 3
SENSOR INPUT 2
SENSOR INPUT 1
L
+N
-
L
+N
-
SD CARD
LINK
ACT
0/4-20 mA
OUTPUT
1
2
A+ -
AA B BGEC
A+-
+
-
E E RR
ABB
AAB B +-
+
-
R R D D
CONDUCTIVITY
PH / REDOX
ECS CONDUCTIVITY
5-6
A+
B+
C+
D+ -
-
-
0/4-20 mA
OUTPUTS
3
2
1
6
5
4
F1 F2 F3 F4 F5
09:56
MON 1 JUN 2009
CH1:
517.2 µS/cm
i)
ii)
12.3 °C

A: 12.28mA
CH2:
9.64 pH
i)
ii)
25.0 °C -156mV
CH3:
23.3 %
i)
ii)
28.0 °C 2.15Atm


MENU

CAL
242 mm
331 mm
TANK 1
110 mm
CH3
CH2
CH1
85-265V 15W
_
~1 4 7
258
36
G
G
G
DIGITAL
INPUTS
SENSOR INPUT 3
SENSOR INPUT 2
SENSOR INPUT 1
L
+N
-
L
+N
-
SD CARD
0/4-20 mA
OUTPUT
1
2
A+ - AA B BGEC
A+-
+
-
E E RR
ABB
AAB B +-
+
-
R R D D
CONDUCTIVITY
PH / REDOX
ECS CONDUCTIVITY
5-6
A+
B+
C+
D+ -
-
-
0/4-20 mA
OUTPUTS
3
2
1
6
5
4
Power Supply
Input
Relays
Current Outputs
/ Modbus RS485
Channel 1
Input
Channel 2
Input
Channel 3
Input
Digital
Inputs SD Card
Slot
Earth Studs
Ethernet
Port
(Future
Expansion)
Exact Instrument Conguration Depends
Upon Ordered Specication
MON 1 JUN 2009
09:56
CH1: 517.2 µS/cm TEMP1: 12.3°C
CH2: 9.64 pH
CH3: 23.3%
TEMP2: 25.0°C
TEMP3: 28.0°C
MAIN MENU
DIGITAL INPUTS
CHANNELS


EXIT
4-20mA OUTPUTS
CALIBRATION
SETPOINT / RELAYS

CONFIGURATION
CURSOR
FURTHER MENU
PAGES BELOW

INSTRUMENT
READINGS
CURRENT
DATE / TIME
UNIT STATUS
FURTHER MENU
PAGES ABOVE
MON 1 JUN 2009
09:56
CH1: 517.2 µS/cm TEMP1: 12.3°C
CH2: 9.64 pH
CH3: 23.3%
TEMP2: 25.0°C
TEMP3: 28.0°C
SETPOINT 1 SETUP
INPUT SOURCE:
RANGE:
TRIGGER:
HIGH VALUE:
MODE:
CHANNEL:

SENSOR
0 to 9.999 mS/cm
HIGH
7.500mS/cm
ON/OFF

EXIT
CHANNEL 1 (COND)

LOW
BAND
LATCH HIGH
TRIGGER
HIGH
LATCH LOW 

CURSOR
ADDITIONAL
OPTIONS BELOW
OPTION POP-UP
MON 1 JUN 2009
09:56
CH1: 517.2 µS/cm TEMP1: 12.3°C
CH2: 9.64 pH
CH3: 23.3%
TEMP2: 25.0°C
TEMP3: 28.0°C
CHANNEL 1 SETUP
UNITS:
CELL CONSTANT:
RANGE:
TEMP INPUT SENSOR:
TEMPERATURE UNITS:
MODE:
SIEMENS(S/cm)
1.000
AUTO
PT1000
°C

EXIT



ON-LINE
SECURITY CODE
CODE
ENTER ACCESS
* * *
0
User Interface Overview
Scrolling Menu Layout
Front Layout
Main Menu Layout
Pop-Up Option Layout
Security Access Pop-Up
To protect the instrument setup
from unauthorised or accidental
tampering, a security access code
system is present. This is
implemented via the instrument’s
menu system which operates in two
modes, “locked” as indicated by a
padlock symbol and “unlocked” as
indicated by a key symbol.
Part No. 6127
Eighth Issue February 2019
Copyright LTH Electronics Ltd.
The default Access Code is: 1000
09:56

MON 1 JUN 2009
CH1: 517.2 µS/cm
i) ii)
12.3°C A:12.28mA
CH2: 9.64 pH
i) ii)
25.0°C -156mV
CH3: 23.3 %
i) ii)
28.0°C 50.15 µS/cm


MENUACK
DOSE ALARM
CAL
CURRENT DATE UNIT STATUS
CURRENT TIME
CHANNEL
MESSAGES
CHANNEL SECONDARY
READING ii
CONTEXT SENSITIVE BUTTON FUNCTIONS
CHANNEL PRIMARY
READING
CHANNEL ID
CHANNEL SECONDARY
READING i
CHANNEL ALARM
STATUS
SETPOINT STATUS
LEDS
SETPOINT STATUS
LEDS
ALARM STATUS
LEDS
TANK 1
TANK 3
CHANNEL
LABEL
Front Screen
Current
Output
Bargraphs
Channels
Setup
Setpoint /
Relays Setup
4-20mA
Outputs Setup
Digital
Inputs Setup
Error
Messages
Live Trends
1, 2 & 3*
*Optional Extra
For conguration and calibration information please consult
the operational manuals available online at -
lth.co.uk/index.php/downloads/ or via the adjacent QR code.
A+
C+
D+
E+
F+
-
-
-
0/4-20 mA
OUTPUTS
B+
Current Output Connector
Current
Output A+
Current
Output B+
B+ C+ D+ E+ F+
Current
Output D+
Current
Output -
(Common)
Current
Output E+
Current
Output C+
Current
Output F+
Current
Output -
(Common)
Current Output Connection Details
A+ ---
Current
Output -
(Common)
Current Output & Modbus Connection Details
-
MODBUS RS485
& 0/4-20 mA OUTPUT
Modbus and Current Output Connector
Current
Output A+
Current
Output -
(Common)
Modbus A
Conenction
(Inverting)
(Rx-/Tx-) Modbus B
Connection
(Non-Inverting)
(Rx+/Tx+)
Modbus and Current Output
Connection Details
A+
mA
Modbus C
Connection
(0V Reference)
Optional
-
mA A- 485 B+ 485 CG 485
A+
mA
A-
485
B+
485
CG
485 mA
Available Current Output and Modbus Connections Vary Depending Upon
Instrument Conguration
Digital Input Connection Details
G12345678
Digital Input Connector
1 4 7
258
36
G
G
G
Digital Input Connection Details Temperature Connection Details
Sensor Input Connector
Link Link
RTD
2 Wire RTD
Connection
AABB
Sensor Input Connector
RTD
3 Wire RTD
Connection
Link
AABB
Sensor Input Connector
RTD
4 Wire RTD
Connection
AABB
Smart Input Card
Connector
Link
RTD
2 Wire RTD
Connection
ABB
RTD
4 Wire RTD
Connection
ABB
Smart Input Card
Connector
Not
Connected
RTD
3 Wire RTD
Connection
ABB
Smart Input Card
Connector
Standard Dissolved Oxygen Input Card Connection Details
Dissolved Oxygen Input Connector
AABBTCA
A
Pg
p
Instrument
Earth Stud
A
Brown
B
Black
Anode
Red
Broadley James ProcessProbe™ Polargraphic
Dissolved Oxygen Sensor Cable
Connection Details
Cathode
White
Link
Link
Green
(Outer Screen)
Sensor Input
Temperature Input
Anode
(White Core
Screen)
54D Extension Cable
Sensor Input
Yellow Blue White Black
Temperature Input Cable
Outer
Screen
Cathode
(White Core)
“TC”
(Black)
“CATH”
(White)
“ANOD”
(Red)
“TC”
(Brown)
Green
Temperature Input Sensor Input
Broadley James ProcessProbe™ Sensor Cable
Broadley James ProcessProbe™ Cable To
54D Extension Cable Connection Details
Pressure Transmitter
Connection Details
Dissolved Oxygen Input Connector
-+
4-20mA
AABBTCA
A
Pg
p
Anode
(White Core
Screen)
WhiteYellow
54D Extension Cable Connection Details
Cable Outer
Screen
Cathode
(White Core)
Sensor Input
Temperature Input
Blue Black
Dissolved Oxygen Input Connector
AABBTCA
A
Pg
p
Instrument
Earth Stud

Externally Powered Loop Connection Details
Loop Mode Set to “mA Input”
Auxiliary mA Input Connector
24V + -
Transmitter / Sensor
- +
+
-
Power Supply
(36V Max)
mA
Locally Powered Transmitter Loop Connection Details
Loop Mode Set to “mA Input”
Auxiliary mA Input Connector
24V + -
Transmitter / Sensor
+ -
+
-
Power
Supply
Internally Powered Loop Connection Details
Loop Mode Set to “24V Loop”
(MXD70 powers the loop with 24V)
Auxiliary mA Input Connector
24V + -
Transmitter / Sensor
+ -
3 Wire Transmitter Loop Connection Details
(NB. The 24V Can Supply 30mA Max)
Loop Mode Set to “mA Input”
Auxiliary mA Input Connector
24V + -
Transmitter / Sensor
-+ mA
Auxiliary mA Input Card Connection Details
Auxiliary mA Input Connection Details
Auxiliary mA Input Connector
Current
Input “-”
(Common)
Current
Input “+”
24V (30mA)
Output
24V + -
Instrument Earth Stud
Cable Screen
(If Present)
Conductivity Input Card Connection Details
White Core
54D Extension Cable
Sensor Input
Yellow Blue White Black
Temperature Input
Cable
Outer
Screen
Brown
Green Blue Red Yellow Green \
Yellow
Temperature Input Sensor Input
CMC8/001 Sensor Cable
CMC8/001 Cable To 54D Extension
Cable Connection Details
Yellow Blue White Black
White
Core Screen
White
Core
Brown
54D Extension Cable Connection Details
Cable Outer
Screen
Instrument Earth Stud
Conventional Conductivity Input Connector
AA B BGEC
Sensor Input
Temperature Input
“C”
White Core
54D Extension Cable
Sensor Input
Yellow Blue White Black
Temperature Input
Cable
Outer
Screen
“E”
Brown
Blue White Black
Yellow Green \
Yellow
Temperature Input
Sensor Input
54D Sensor Cable
54D Sensor Cable To 54D Extension
Cable Connection Details
“G”
White Core
Screen
Green
(Coaxial
Screen)
Brown White
(Coaxial
Core)
Link
Yellow Green RedBlue
Conventional Conductivity Cable (CMC8/001)
Connection Details
Green \ Yellow
(Outer Screen)
Instrument Earth Stud
Conventional Conductivity Input Connector
Link
AA B BGEC
Sensor InputTemperature Input
Yellow Blue White Black
Green
(Coaxial Screen)
White
(Coaxial Core)
Brown
Conventional Conductivity 54D Cable Connection Details
Green \ Yellow
(Outer Screen)
Instrument Earth Stud
Conventional Conductivity Input Connector
AA B BGEC
Sensor Input
Temperature Input
Conventional Conductivity Coax Cable
(CMC8/01 & CMC8/10)
Connection Details
Coaxial
Core
Inner
Insulator
Outer
Insulator
Cable
Screen
Conventional Conductivity Input Connector
AA B BGEC
BrownBlue
Conventional Conductivity Cable
(CMC7)
Connection Details
Conventional Conductivity Input Connector
AA B BGEC
Sensor Input
Electrodeless Conductivity Input Card Connection Details
Green
Core
54E Extension Cable
Sensor Input
Yellow Blue White Black
Temperature Input
Clear
Core
Green Core
Screen
Blue Red
Sleve
Green
Core
Yellow Clear
Core
Temperature
Input
ECS20 54H Cable
ECS20 54H Cable To 54E Extension Cable Connection Details
Yellow
Sleve
Clear Core
Screen
Cable Outer
Screen
Green \
Yellow
Sensor Input
Sensor Input Sensor Input
Yellow Blue White Black
Drive -
Clear Core
Screen
Drive +
Clear Core
54E Extension Cable Connection Details
Cable Outer
Screen
Return +
Green Core
Return -
Green Core
Screen
Sensor Input
Temperature Input
ECS Input Connector
AAB B +-
+
-
R R D D
Instrument Earth Stud
ECS Input Connector
AAB B +-
+
-
R R D D
Instrument Earth Stud
Yellow Blue White Black
Drive -
Yellow Sleeve
(Screen 2)
Drive +
Clear
(Core)
Electrodeless Conductivity Sensor (ECS40) 54E
Cable Connection Details
Green \ Yellow
(Outer Screen)
Return +
Green
(Core)
Return -
Red Sleeve
(Screen 1)
Temperature Input
Sensor Input
Link Link
ECS Input Connector
AAB B +-
+
-
R R D D
Instrument Earth Stud
Electrodeless Conductivity Sensor (ECS20) 54H Cable
Connection Details
Green \ Yellow
(Outer Screen)
Yellow Blue
Drive -
Yellow Sleeve
(Screen 2)
Drive +
Clear
(Core)
Return +
Green
(Core)
Return -
Red Sleeve
(Screen 1)
Temperature Input
Sensor Input
Suspended Solids Input Connection Details
Suspended Solids Input Connector Instrument Earth Stud
Cable Screen
Green
Red
Black
White
Brown
Orange
Yellow
S10, S20, S40 Suspended Solids Sensor Cable
Connection Details
Turbidity Input Card Connection Details
Turbidity Input Connector Instrument Earth Stud
Cable Screen
Green
Red
Black
White
Brown
Orange
Yellow
Blue
T30 Turbidity Sensor Cable
Connection Details
Smart pH / Redox Input Card Connection Details
AB B SGRETx Rx 0v
“TC”
(Red)
“TC”
(Black)
“pH”
(Clear)
“REF”
(Black)
S400 ProcessProbe Cable
Connection Details
(Solution Ground Not Fitted)
Link
Smart pH / Redox Input Connector
Temperature Input Sensor Input
Link
AB B SGRETx Rx 0v
“TC”
(Red)
“TC”
(Black)
“pH”
(Clear)
“REF”
(Black)
S400 ProcessProbe Cable
Connection Details
(Solution Ground Fitted)
Link
Smart pH / Redox Input Connector
Temperature Input Sensor Input
“GRND”
(Green)
VP6 Detachable Cable Connection Details
(Solution Ground Fitted)
Green \ Yellow
(Outer Screen)
Temperature Input Sensor Input
“RTD IN”
(Green)
“RTD SENSE”
(Grey)
“RTD RTN”
(White)
“AUX”
(Blue)
“Glass”
(Black/Clear)
“Reference”
(Red)
Smart pH / Redox Input Connector Instrument Earth Stud
AB B SGRETx Rx 0v
pH / Redox LN10 Coax Cable
(No TC) Connection Details
Inner Conductor (pH)
Inner Insulator
Conductive Layer
(Must be stripped back
to cable screen)
Outer Insulator
Cable Screen
(Ref)
Smart pH / Redox Input Connector
AB B SGRETx Rx 0v
Link
pH / Redox LN10 Coax Cable
With Solution Ground
(No TC) Connection Details
Inner Conductor (pH)
Smart pH / Redox Input Connector
AB B SGRETx Rx 0v
Cable Screen
(Ref)
Solution Ground
(Seperate Cable) Conductive Layer
(Must be stripped back
to cable screen)
Yellow White Black
Reference
(Green Core
Screen)
Electrode
(Green Core)
pH 54E Extension Cable Connection Details
(Solution Ground Not Fitted)
Cable Outer
Screen
Link
Temperature Input
Sensor Input
Smart pH / Redox Input Connector Instrument Earth Stud
AB B SGRETx Rx 0v
Yellow White Black
Reference
(Green Core
Screen)
Electrode
(Green Core)
pH 54E Extension Cable Connection Details
(Solution Ground Fitted)
Cable Outer
Screen
Temperature Input
Sensor Input
Smart pH / Redox Input Connector Instrument Earth Stud
AB B SGRETx Rx 0v
Solution Ground
(Clear Core)
54E Extension Cable
VP6 Detachable Cable
VP6 Detachable Cable To 54E Extension Cable
Connection Details
Electrode
(Green Core)
Sensor Input
Yellow White Black
Temperature Input
Reference
(Green Core Screen)
Solution Ground
(Clear Core)
Cable Outer
Screen
Temperature Input Sensor Input
“RTD IN”
(Green) “RTD SENSE”
(Grey)
“AUX”
(Blue)
“Reference”
(Red)
“RTD RTN”
(White) “Glass”
(Black/Clear)
Green \ Yellow
(Outer Screen)
Electrode
(Green Core)
54E Extension Cable
Sensor Input
Yellow White Black
Temperature Input
Reference
(Green Core Screen)
Solution Ground
(Clear Core)
“TC”
(Black)
“GRND”
(Green)
“pH”
(Clear)
“TC”
(Red)
“REF”
(Black)
Temperature Input Sensor Input
S400 ProcessProbe Cable
S400 ProcessProbe Cable To 54E
Extension Cable Connection Details
Hybrid™ SensorTalk™ Probe Cable Connection Details
(Solution Ground Fitted)
Green \ Yellow
(Outer Screen)
Temperature Input Sensor Input
“RTD IN”
(Green) “SensorTalk
Tx”
(Grey)
“RTD RTN”
(White)
“AUX”
(Blue)
“Glass”
(Black/Clear)
“Reference”
(Red)
Smart pH / Redox Input Connector Instrument Earth Stud
AB B SGRETx Rx 0v
Link
“SensorTalk
Rx”
(Pink)
“SensorTalk
0v”
(Brown)
SensorTalk Interface
Digital SensorTalk™ Probe Cable Connection Details
Green \ Yellow
(Outer Screen)
“SensorTalk
Tx”
(Grey)
Smart pH / Redox Input Connector
Instrument
Earth Stud
AB B SGRETx Rx 0v
“SensorTalk
Rx”
(Pink)
“SensorTalk
0v”
(Brown)
SensorTalk Interface
Yellow
Solution
Ground
(White)
Black
Reference
(Green Core
Screen)
Electrode
(Green Core)
Hybrid™ SensorTalk™ 54E Extension Cable
Connection Details (Solution Ground Fitted)
Cable Outer
Screen
Temperature Input
Sensor Input
Smart pH / Redox Input Connector Instrument Earth Stud
AB B SGRETx Rx 0v
Clear Core
Link
BlueClear Core
Screen
SensorTalk Interface
Black
“SensorTalk RX”
(Pink) “SensorTalk 0v”
(Brown)
54E Extension Cable
Hybrid SensorTalk Probe Cable
Hybrid™ SensorTalk™ Probe Cable To 54E Extension Cable
Connection Details
Electrode
(Green Core)
Sensor Input
YellowWhite Blue
Temperature Input Reference (Green
Core Screen)
Clear Core
Cable Outer
Screen
Temperature Input Sensor Input
“RTD IN”
(Green) “SensorTalk Tx”
(Grey)
“AUX”
(Blue)
“Reference”
(Red)
“RTD RTN”
(White) “Glass”
(Black/Clear)
Green \ Yellow
(Outer Screen)
Clear Core
Screen
SensorTalk Interface
SensorTalk Interface
Smart Dissolved Oxygen Input Card Connection Details
AB B PApCTx Rx 0v
Smart Dissolved Oxygen Input Connector
Instrument
Earth Stud
A
Brown
B
Black
Anode
Red
Broadley James ProcessProbe™ Polargraphic
Dissolved Oxygen Sensor Cable
Connection Details
Cathode
White
Link
Green
(Outer Screen)
Sensor Input
Temperature Input
Yellow Anode
(White Core
Screen)
White
Broadley James ProcessProbe™
54D Extension Cable Connection Details
Cable Outer
Screen
Cathode
(White Core)
Sensor Input
Temperature Input
Black
Smart Dissolved Oxygen Input Connector
Instrument
Earth Stud
AB B PApCTx Rx 0v
Pressure Transmitter
Connection Details
Smart Dissolved Oxygen Input Connector
-+
4-20mA
AB B PApCTx Rx 0v
Anode
(White Core
Screen)
54D Extension Cable
Sensor Input
Yellow White Black
Temperature Input Cable
Outer
Screen
Cathode
(White Core)
“TC”
(Black)
“CATH”
(White)
“ANOD”
(Red)
“TC”
(Brown)
Green
Temperature Input Sensor Input
Broadley James ProcessProbe Sensor Cable
Broadley James ProcessProbe™
Cable To 54D Extension Cable
Connection Details
Hybrid™ SensorTalk™ Probe Cable
Connection Details
Green
\ Yellow
(Outer
Screen)
Temperature Input Sensor Input
“RTD IN”
(Green) “SensorTalk
Tx”
(Grey)
“RTD RTN”
(White)
“Cathode”
(Black/Clear)
“Anode”
(Red)
Smart Dissolved Oxygen Input Connector Instrument
Earth Stud
Link
“SensorTalk
Rx”
(Pink)
“SensorTalk
0v”
(Brown)
SensorTalk Interface
AB B PApCTx Rx 0v
White
Black
“SensorTalk RX”
(Pink) “SensorTalk 0v”
(Brown)
54D Extension Cable
Hybrid SensorTalk Probe Cable
Hybrid™ SensorTalk™ Probe Cable To 54D Extension
Cable Connection Details
Cathode
(White Core)
Sensor Input
Yellow Brown Blue
Temperature Input
Anode
(White Core
Screen)
Cable Outer
Screen
Temperature Input Sensor Input
“RTD IN”
(Green) “SensorTalk Tx”
(Grey)
“Anode”
(Red)
“RTD RTN”
(White) “Cathode”
(Black/Clear)
Green \ Yellow
(Outer Screen)
SensorTalk Interface
SensorTalk Interface
Yellow Anode
(White Core
Screen)
White
Hybrid™ SensorTalk™ 54D Extension Cable
Connection Details
Cable
Outer
Screen
Cathode
(White Core)
Sensor Input
Temperature Input
Black
Smart Dissolved Oxygen Input Connector Instrument
Earth Stud
AB B PApCTx Rx 0v
Link
Brown Blue
OptaProbe™ or Digital SensorTalk™ Probe
Cable Connection Details
Green
\ Yellow
(Outer
Screen)
“SensorTalk
Tx”
(Grey)
Smart Dissolved Oxygen Input Connector Instrument
Earth Stud
“SensorTalk
Rx”
(Pink)
“SensorTalk
0v”
(Brown)
SensorTalk Interface
AB B PApCTx Rx 0v

MXD73
Multi-parameter Monitor
Installation Guide

Preface
MXD73 Installation Guide - 1 -
Preface
Product warranty
The MXD73 has a warranty against defects in materials and workmanship for three years
from the date of shipment. During this period LTH will, at its own discretion, either repair
or replace products that prove to be defective. The associated software is provided ‘as is’
without warranty.
Limitation of warranty
The foregoing warranty does not cover damage caused by accidental misuse, abuse,
neglect, misapplication or modification.
No warranty of fitness for a particular purpose is offered. The user assumes the entire risk of
using the product. Any liability of LTH is limited exclusively to the replacement of defective
materials or workmanship.
Disclaimer
LTH Electronics Ltd reserves the right to make changes to this manual or the instrument
without notice, as part of our policy of continued developments and improvements.
All care has been taken to ensure accuracy of information contained in this manual.
However, we cannot accept responsibility for any errors or damages resulting from errors
or inaccuracies of information herein.
Copyright and trademarks
All rights reserved. Translations, reprinting or copying by any means of this manual,
complete or in part or in any different form requires our explicit approval.
MXD73 is a trademark of LTH Electronics Ltd
Fourth edition: March 2016
LTH Electronics Ltd
Chaul End Lane
Luton Telephone : [phone]
Bedfordshire Fax : [phone]
LU4 8EZ email : [email protected]
England Web : www.lth.co.uk

Preface
- 2 - MXD73 Installation Guide
Manufacturing Standards
Electromagnetic compatibility
This instrument has been designed to comply with the standards and regulations set down
by the European EMC Directive 2014/30/EU using BS EN 61326-1: 2013
Safety
This instrument has been designed to comply with the standards and regulations set down
by the European Low Voltage Directive 2014/35/EU using BS EN 61010-1: 2010
Quality
This instrument has been manufactured under the following quality standard:
ISO 9001:2008. Certificate No: FM 13843
Note: The standards referred to in the design and construction of LTH products are those
prevailing at the time of product launch. As the standards are altered from time to time, we
reserve the right to include design modifications that are deemed necessary to comply
with the new or revised regulations.
Disposal
As per directive 2012/19/EU, please observe the applicable local or national regulations
concerning the disposal of waste electrical and electronic equipment.

Preface
MXD73 Installation Guide - 3 -
Declaration of Conformity

Preface
- 4 - MXD73 Installation Guide
Blank

Contents
MXD73 Installation Guide - 5 -
Contents
Preface.........................................................................................................................1
Contents.....................................................................................................................5
Introduction..............................................................................................................7
MXD73 Instrument Specification......................................................................9
Installation – Safety & EMC............................................................................... 11
Noise suppression................................................................................................ 12
MXD73 Add-in Cards Installation................................................................... 13
Installation – MXD73........................................................................................... 17
MXD73 Connections........................................................................................... 19
Supply Voltage Connections..................................................................... 20
Current Output Connections..................................................................... 21
Relay Connections......................................................................................... 22
Modbus RS485 Connections...................................................................... 22
Sensor Connections...................................................................................... 22
Digital Inputs ................................................................................................... 23
SD Card Interface ........................................................................................... 23
Guarantee and Service....................................................................................... 24
Index ......................................................................................................................... 25

Contents
- 6 - MXD73 Installation Guide
Blank

Introduction
MXD73 Installation Guide - 7 -
Introduction
Introduction
The MXD73 is a microprocessor controlled multi-parameter instrument that can be
installed with a user selected combination of up to 3 Sensor Input Cards. The instrument
may be subsequently modified to meet changing requirements by the installation of
additional, or different, cards and the attachment of the appropriate sensor(s).
Utilising a multifunction easy to read QVGA LCD the instrument displays readings and
provides feedback to the operator on the status of the sensors and instruments outputs.
In addition the instrument features, depending upon configuration, up to six control relays,
up to six 0/4 – 20mA current outputs and an Modbus RS485 interface. These can be used to
provide fully configurable control, alarm and feedback.
Finally the instrument also features an SD card interface which enables the user to backup
and restore instrument settings, copy settings between instruments, log the sensor
readings (optional extra) and to upgrade the instrument’s software.
MXD73 Overview

Introduction
- 8 - MXD73 Installation Guide
Introduction
MXD73 Rear Termination Overview

Introduction
MXD73 Installation Guide - 9 -
Introduction
MXD73 Instrument Specification
Input Expansion Slots 3 slots, user configurable with any combination of
available input add-in cards.
Output Expansion Slots 1 slot, user configurable with an additional output
option add-in card.
Ambient Operating Temperature -20°C to +50°C (-4°F to +122°F) for full specification.
Display 3 ¾” QVGA back lit LCD module.
Buttons 5 tactile feedback, micro-switched, silicone rubber.
Alarm LED’s 2 Yellow LED’s located above the main display area
for instrument’s alarm status, lit = active.
Digital Inputs 8 contact closures for remote activation of user
defined operations. Can be configured to operate in
either normally open or normally closed modes.
Current Output Options 1 as standard, expandable up to a total of 4 or 6
depending on the number of relays.
Current Output Specification Each selectable 0-20mA or 4-20mA into 750 ohms
max, fully isolated to 2kV. Expandable up to 5% of
any operating range and offset anywhere in that
range.
Current Output Adjustment ±0.01mA, 3 point 0/4-20 mA for remote monitor
calibration.
Setpoints and Control Relays
Options
2 change over relays as standard, expandable up to
a total of either 4 change over relays, or 4 change
over relays + 2 normally open relays depending on
the number of current outputs.
Setpoints and Control Relays
Specification
Fully configurable setpoints with volt free contacts
for each relay. Rated at 5A @ 30V DC / 5A @ 250V AC.
Setpoint LED’s 6 Red LED’s located above main display area for
setpoint status indication, lit = relay energised.

Introduction
- 10 - MXD73 Installation Guide
Introduction
Setpoint Modes On/Off, Time Proportioning, Pulse Proportioning,
Band and Latch.
Delay timer adjustable from 00:00 to 59:59 mm:ss.
Hysteresis 0 to 9.9%.
Dose alarm timer, with supplementary initial charge
function. Both adjustable from 00:00 to 59:59 mm:ss.
Adjustable cycle time and proportional band in
proportional modes.
Setpoint Cleaning Cleaning mode with adjustable duration (max 10m)
and interval times (max 24h), auto offline function
with recovery timer.
Setpoint Alarm Unit or channel alarm mode, whereby the relay can
be energised under certain set conditions.
Modbus RS485 Interface
(Optional)
Supports RTU and ASCII formats
Node Address: 1 to 247
Baud Rates (Bits Per Second) : 300, 600, 1200, 2400,
4800, 9600, 19200, 31250, 38400
Parity Options: Even, Odd, None
SD Card Interface Enables backing up and restoring of instrument
configuration, log the sensor readings (optional
extra) and on site upgrading of instrument software.
SD, SDHC and SDXC-FAT32 cards supported.
EMC 2014/30/EU using BS EN 61326-1: 2013.
Low Voltage Directive 2014/35/EU using BS EN 61010-1: 2010.
Power Supply Universal 80-265V AC or DC, 15W max.
LV Option 18 – 32 V AC or DC, 20W max.
Instrument Housing UL 94-V0 PC/ABS.
Ingress Protection Rating
(IEC 60529 Protection Rating)
IP66 to the front when panel mounted.
Weight Maximum 880 grams (instrument only).
Dimensions Front 128 x 116 x 23 mm (H, W, D).
Dimensions Rear 89 x 89 x 161 mm (H, W, D), including connectors.

Installation
MXD73 Installation Guide - 11 -
Installation
Installation – Safety & EMC
This chapter describes how to install the instrument and how to connect the unit to a
power source and auxiliary equipment.
Although today’s electronic components are very reliable, it should be anticipated in any
system design that a component could fail and it is therefore desirable to make sure a
system will fail safe. This could include the provision of an additional monitoring device,
depending upon the particular application and any consequences of an instrument or
sensor failure.
Wiring Installation
The specified performance of the instrument is entirely dependent on correct installation.
For this reason, the installer should thoroughly read the following instructions before
attempting to make any electrical connections to the unit.
CAUTION ! : ALWAYS REMOVE THE MAIN POWER FROM THE SYSTEM BEFORE ATTEMPTING
ANY ALTERATIONS TO THE WIRING. ENSURE THAT BOTH POWER INPUT LINES ARE
ISOLATED. MAKE SURE THAT THE POWER CANNOT BE SWITCHED ON BY ACCIDENT WHILST
THE UNIT IS BEING CONNECTED. FOR SAFETY REASONS AN EARTH CONNECTION MUST BE
MADE TO THE EARTH TERMINAL OF THIS INSTRUMENT.
LOCAL WIRING AND SAFETY REGULATIONS SHOULD BE STRICTLY ADHERED TO WHEN
INSTALLING THIS UNIT. SHOULD THESE REGULATIONS CONFLICT WITH THE
FOLLOWING INSTRUCTIONS, CONTACT LTH ELECTRONICS OR AN AUTHORISED LOCAL
DISTRIBUTOR FOR ADVICE.
To maintain the specified levels of Electro Magnetic Compatibility (EMC, susceptibility to
and emission of electrical noise, transients and radio frequency signals) it is essential that
the types of cables recommended within these instructions be used. If the installation
instructions are followed carefully and precisely, the instrument will achieve and maintain
the levels of EMC protection stated in the specification. Any equipment to which this unit
is connected must also have the same or similar EMC control to prevent undue interference
to the system.
Terminations at the connectors should have any excess wire cut back so that a
minimal amount of wire is left free to radiate electrical pick-up inside or close to the
instrument housing.
The rear input card cover of the panel mount unit must be correctly re-assembled and
securely fastened to maintain a continuous electro-magnetic shield around the instrument.
N.B. The use of CE marked equipment to build a system does not necessarily mean that the
completed system will comply with the European requirements for EMC.

Installation
- 12 - MXD73 Installation Guide
Installation
Noise suppression
In common with other electronic circuitry, the instrument may be affected by high level,
short duration noise spikes arising from electromagnetic interference (EMI) or radio
frequency interference (RFI). To minimise the possibility of such problems occurring, the
following recommendations should be followed when installing the unit in an
environment where such interference could potentially occur.
The following noise generating sources can affect the instrument through capacitive or
inductive coupling.
Relay coils
Solenoids
AC power wires, particularly at or above 100V AC
Current carrying cables
Thyristor field exciters
Radio frequency transmissions
Contactors
Motor starters
Business and industrial machines
Power tools
High intensity discharge lights
Silicon control rectifiers that are phase angle fired
The instrument is designed with a high degree of noise rejection built in to minimise the
potential for interference from these sources, but it is recommended that you apply the
following wiring practices as an added precaution. Cables transmitting low level signals
should not be routed near contactors, motors, generators, radio transmitters, or wires
carrying large currents.
If noise sources are so severe that the instrument’s operation is impaired, or even halted,
the following external modifications should be made, as appropriate:
Fit arc suppressors across active relay or contactor contacts in the vicinity.
Run signal cables inside steel tubing as much as is practical.
Use the internal relays to switch external slave relays or contactors when switching
heavy or reactive loads.
Fit an in-line mains filter close to the power terminals of the instrument.
In cases of very high background RF and HF noise environments, LTH can supply a
length of proprietary RF suppressing mains cable.

Installation
MXD73 Installation Guide - 13 -
Installation
MXD73 Add-in Cards Installation
The MXD73 is designed to be expandable by the use of add-in cards; these add-in cards can
take the form of either a sensor input add-in card or an output option add-in card. The
MXD73 can be fitted with up to 3 sensor input cards and 1 output option card. The sensor
input cards are designated Input Card 1, Input Card 2 and Input Card 3. On the instrument
display these are designated Channel 1, Channel 2 and Channel 3.
LElectrostatic precautions must be taken when handling the Add-in cards.
Sensor Input Card
Profile
Output Option Card Profile
N.B. Cards must be inserted with the green connector towards the rear of the instrument
case.