Sensorex TX2000 User manual

1
TX2000
Intelligent
pH/ORP
Transmitter
Operation
Manual
/^KϵϬϬϭͲ2008 Cerficate No. C0036132

Thank you for purchasing Sensorex products. In order to continually improve and enhance the transmitter’s
function, Sensorex reserves the right to modify the content and icon display of the product. The actual
situation is subject to the instrument without notice. The operation manual is only provided for function and
installation description. Sensorex Corporation is not liable for any person or entity for any direct or indirect
loss or damage due to improper usage of this product. If you have any questions or find any omissions, or
mistakes in this operation manual, please contact Sensorex Corporation.
Precautionsforinstallation
Wrong wiring will lead to breakdown or electrical shock of the instrument, please read this
operation manual clearly before installation.
Make sure to remove AC power from the transmitter before wiring input, output connections,
and remove it before opening the transmitter’s housing.
The installation site of the transmitter should be good in ventilation and avoid direct
sunshine.
The material of signal cable should be special coaxial cable. Strongly recommend using our
coaxial cable. Do not use normal wires instead.
Avoid electrical surge when using power. Especially when using three-phase power, use
ground wire correctly.
The internal relay contact of the instruments is for alarm or control function. Due to safety,
please must connect to external relays which can stand enough ampere to make sure the
safety operation of the instrument.（Please refer to chapter 3.7“Illustration of electrical
connection”）

Precautions for installation
Brief Instruction
1
1. Specifications 4
2. Assembly and installation
2.1 Transmitter installation 5
2.2 Illustration of panel mounting 5
2.3 Illustration of wall mounting and pipe mounting 6
2.4 Assembly of electrode and housing 6
2.4.1 Cable set-up 6
2.4.2 Assembly of immersive electrode holder and junction box 7
2.5 Illustration and description of junction box (not shown) 9
3. Overview of Intelligent pH/ORP transmitter TX2000
3.1 Illustration of rear panel 10
3.2 Illustration of terminal function 10
3.3 Description of terminal function 11
3.6 Typical wirings 14
3.7 Illustration of electrical connection 14
4. Configuration
4.1 Illustration of front panel 15
4.2Keypad 15
4.3 LED indicators 15
4.4 Display 16
5. Operation
5.1 Measurement mode 17
5.2 Set-up menu 17
5.3 Calibration menu 17
5.4 Shortcuts 17
5.5 Default value
5.5.1 Setting default value 17
5.5.2 Calibration default value 17
6. Settings
Block diagram of settings 18
6.1 Entry of set-up menu 20
6.2 Security code of settings(Code) 21
6.3 Language 22
6.4 Measurement parameters(Mode) 23
6.5 Multi-point calibration(Multi-Cal) 24
CONTENTS

6.6 Temperature 25
6.7 Relay 1 26
6.8 Relay 2 27
6.9 Clean 28
6.10 Analog output 1 (pH/ORP)
29
6.11 Analog output 2 (temperature) 30
6.12 Date/Time (Clock) 31
6.13 Sample average of measurements (Digital filter) 32
6.14 Backlight settings 33
6.15 Contrast settings 34
6.16 Automatically back to measurement mode(Return) 35
7. Calibration
Block diagram of Calibration 36
7.1 Entry of calibration menu 37
7.2 Security password of calibration 38
7.3 pH calibration 39
7.3.1 TECH mode 39
7.3.2 NIST mode 39
7.3.3 Any mode 39
7.3.4 Definition of calibration parameter 40
7.3.5 TECH, NIST buffer Calibration 41
7.3.6 Any Calibration 42
7.4 ORP calibration 43
7.5 Automatically back to measurement mode(Return)
8. Error messages (Error code) 45
9. Maintenance 46
Appendix 47

1.Specifications
Model TX2000
Measuring modes pH / ORP / Temp.
Ranges
pH -2.00~16.00 pH
ORP -1999~1999 mV
Temp. -30.0~130.0 C
Resolutions
pH 0.01 pH
ORP 1 mV
Temp. 0.1 C
Accuracy
pH ±0.01 pH (±1 Digit)
ORP ±0.1% (±1 Digit)
Temp. ±0.2C (±1 Digit),
equipped with temperature error modification function
Temperature
Compensation
NTC30K/ PT 1000 auto temperature compensation
Manual adjustment temperature compensation
Calibration mode TECH, NIST, Any Buffers, up to three point calibration
Ambient Temp. 0~50C
Storage Temp. -20~70C
Input Impedance > 1012 Ω
Display Large LCM with auto-sense backlight sensor & contrast function. Text mode.
Analog output 1 Isolated DC 0/4~20mA corresponding to main measurement,
max. load 500
Analog output 2 Isolated DC 0/4~20mA corresponding to Temp., max. load 500
Settings
Contact RELAY contact, 240VAC 0.5A Max.(recommend)
Activate Hi/Lo. Hi/Hi. Lo/Lo selectable two limited programmable,
ON/OFF
Wash RELAY contact: ON 0~99min. 59sec. / OFF 0~999hr 59min.
Voltage Output DC±12V，1W max.
Protection IP65(NEMA 4X)
Power Supply 100V~240VAC±10%，4W max.，50/60Hz
Installation Wall or Pipe or Panel Mounting
Dimensions 3.78”(96mm) × 3.78”(96mm) × 5.20”(132mm) (HWD)
Panel Cut Out Dimensions 3.66”(93 mm) 3.66”(93 mm) (HW)
Weight 1.1lb(0.5Kg)
Note: The specifications are subject to change without notice.

2. Assembly and installation
2.1 Transmitter installation: This Transmitter can be installed through panel mounting, wall
mounting and 2” pipe mounting.
Installation of panel mounting: First, prepare a square hole of 3.66” (93mm) x 3.66”
(93mm) on the panel box, and then insert the controller directly into the panel box. Insert the
mounting bracket from the rear, and until it is fixed into the pickup groove.
2.2 Illustration of panel mounting
3.66” (93 mm)
3.66”(93 mm)
Panel cutout dimensions
3.42” (87 mm)
＋
Hole distances on the
p
anel box
Mounting bracket
Illustration of panel mounting,
fixed with mounting bracket
＋
＋
＋
4.41”
(
112 m
m
)
3.42” (87 mm)

2.3 Illustration of wall mounting and pipe mounting
Penetrate the two prepared holes in the rear
cover and fix the U-shaped pipe clip, and
then install two waterproof squeezed caps
(the transmitter’s standard accessory kit) into
the holes from inner rear cover to prevent
from the water vapor.
Installation of pipe mounting
Fixed with U-shaped pipe clamp.
(Optional, Order Number: 5333027)
Installation of wall mounting
Fixed with 4 x M4 screws
Insert the single hole rubber plug into
the unused cable gland, and tighten up
the cable gland to prevent from the
penetration of water vapor.

2.4 Assembly of electrode and housing
2.4.1 Cable set-up
a. Make sure to remove the conductive rubber or aluminum-foil layer between the electrode signal
wire and the coaxial shield.
b. Extend the cable to the transmitter without any joint except specific junction box. Connect the
transparent coaxial inner directly to the Glass terminal on the back of transmitter, and metal
connect coaxial shield to Ref. terminal.
2.4.2 ,QWHQWLRQDOO\OHIWEODQN
Set-up diagram of coaxial cable:
See the correct set-up method on the left:
Note: The black conductive rubber
covering on the coaxial inner should be
removed.
Metal coaxial shield
Transparent coaxial inner
(Remove the conductive rubber)

3. Overview of pH transmitterTX2000
3.1 Illustration of rear panel:
3.2 Illustration of terminal function:
+
-
GLASS
REF
SG
TP
pH/
ORP
Temp
POWER
AC
INPUT
POWER
SG
+
-
±12V
RLY1 RLY2 WASH/Cln
+
-
4/20m
A
4/20m
A
1
2

3.3 Description of terminal function:
０１
０２
０３
０４
０５
０６
０７ NC: No connection
０８ 100~240VAC: Power supply terminal
０９ NC：No connection
１０ 100~240VAC: Power supply terminal
１１
１２
１３ NC: No connection
１４ REF: Coaxial shield of pH/ORP electrode signal wire
１５ SG: Solution ground wire. If no solution ground, there should be a
jumper between this terminal and REF (14).Ashort circuit bar is
attached when shipped from the factory.
１６ T/P: Connect with one of cable end of temperature probe
１７ SG: Connect with one of cable end of temperature probe
１８
１９
２０ 4~20mA +terminal：Master measure current output terminal +, for external
recorder or PLC control
２１ 4~20mA - terminal：Master measure current output terminal -, for external
recorder or PLC control
２２ 4~20mA + terminal/ D+(B)：Temperature current output terminal +, for
external recorder or PLC control (only applicable for
TX2000); or RS-485 output D+(B) (only applicable
for TX2000RS)
２３ 4~20mA - terminal/ G：Temperature current output terminal -, for external
recorder or PLC control (only applicable for TX2000); or
RS-485 output GND (only applicable for TX2000RS)
２４ NC / D-(A): NC or RS-485 output D-(A) (only applicable for
TX2000RS)or RS-485 output D-(A) (only
applicable for TX2000RS)
WASH: Wash relay contact for an
external relay
REL2: Second alarm control, contact for an
external rela
y
REL1: First alarm control, contact for an
external rela
y
GLASS: Coaxial inne
r
wire of pH/ORP
electrode signal wire
DC±12V：Output terminal of direct current voltage ±12V

3.6 Typical wirings
3.7 Illustration of electrical connection
Two-wire distribution
(No solution ground)
GND REF. GLAS
pH/
ORP
Coaxial
inner
Coaxial shield
Short circuit bar
Surge absorber
Surge absorber
Surge absorber
Surge absorber
Transmitter
Cleaning device
Dose feeder
Dose feeder
100 ~ 240VAC
Surge absorber
Surge absorber
External relay
External relay
External relay
Note: The transmitter built-in miniature relays is necessary to be repaired and replaced by professional technicians.
It is recommended to use an external relay (Power Relay) to activate the external equipments.
Three-wire distribution
GND REF
.
GLAS
pH/
ORP
Coaxial
inner
Coaxial
shield
Black

4. Configuration:
4.1 Illustration of front panel:
4.2 Keypad:
In order to prevent inappropriate operation by others, before the parameter setting and
calibration, the operation applies multi-keys, and coding protection if necessary. Description of
the key functions is in the following:
：In the parameter set-up mode, pressing this key allows you exit parameter set-up mode
and back to Measurement mode.
: In the Calibration mode, pressing this key allows you exit Calibration mode and back to
Measurement mode.
：1. In the parameter set-up mode and Calibration mode, pressing this key to select
leftward or change to another page.
2. When adjusting value, press this key to increase the value.
：1. In the parameter set-up mode and Calibration mode, pressing this key to select
rightward or change to another page.
2. When adjusting value, press this key to decrease the value.
：Key for confirmation; pressing this key is essential when modifying data value or
selecting the parameter setting items in the window.
4.3 LED indicators:
ACT: Washing device operation indicator and controlling operation indicator (Relay 1, Relay 2)
B.L. : Light sensor; in the automatic display backlit mode, the lamp will light or go out as the
change of environmental brightness.

4.4 Display:
1. When the function is activated, the display shows and twinkles the description, “Clean Running”.
At the same time, the ACT indicator LED lights up, and the transmitter automatically turns off Relay 1
and Relay 2 function. After finishing cleaning, the Relay 1 and Relay 2 will automatically back to
normal status.
2. When Relay 1/Relay 2 which is set in high setting point is in action, the display shows and flashes the
description, “REL 1-HI/REL 2-HI”, and ACT indicator LED lights up. When Relay 1/Relay 2 which is
set in low setting point is in action, the display shows and flashees the description, “REL 1-Lo/ REL
2-Lo”, and ACT indicator LED lights up.
3.When the Analog 1 current output exceeds the upper/lower limitation, the display flashes ”pH-mA /
pH-mA ” or ”ORP-mA / ORP-mA “.
4. When the Analog 2 current output exceeds the upper/lower limitation, the display flashees “˚C
-mA /
˚C –mA ”.
Analog 2 output
current over range
alarm
Control function
on hold
:Measurement mode
:
Set-up mode
:
Calibration mode
REL 1 high or
low point alarm
Measurement unit
Clock
REL 2 high or
low point alarm
Analog 1 output
current over range
alarm
Temperature
compensation mode
(MTC/ATC)
Temperature value
Measurement value
▲
▲
▲
▼
▼ ▼

Note: The “HOLD” warning text appears when clean function is activated, or when entering setup menu, or
when entering calibration menu. Under HOLD status, the corresponding display and output are as follows:
1. Both Relay 1 and Relay 2 are not functioning. If enter setting menu or calibration menu under clean status,
the instrument will stop clean status automatically.
2. The current output which is corresponding to measurement value remains at the last output value before
HOLD status.
Clean function in
action condition

5. Operation
5.1 Measurement mode:
After all electrical connections are finished and tested, connect the instrument to the power
supply and turn it on. The transmitter will automatically enter measurement mode with the factory
default settings or the last settings from user.
5.2 Set-up menu:
Please refer to the set-up instructions in Chapter 6. Press and simultaneously to
enter into set-up menu. Press to go back to measurement mode.
5.3 Calibration menu:
Please refer to the calibration instructions in Chapter 7. Press and
simultaneously to enter into calibration menu. Press to go back to measurement mode.
5.4 Shortcuts:
In the measurement mode, if selecting MTC for temperature compensation mode, you may
press and to adjust MTC temperature value.
5.5 Default value:
5.5.1 Setting default value:
Measurement mode: pH
Multi-Cal：2 points pre-setting
Temperature compensation: MTC 25°C
Relay 1: High point alarm: AUTO, SP1= 10.00 pH, Hys= 0.10 pH
Relay 2: Low point alarm: AUTO, SP2 =04.00 pH, Hys= 0.10 pH
Wash time: OFF
Analog 1 current output (pH/ORP): 4~20 mA, 0.00~14.00pH
Analog 2 current output (Temp): 4~20 mA, 0~100.0°C
Digital filter: 5
Backlight setting: Off
Code set-up: OFF
Date & Time: 2012/1/1 00:00:00
Contrast: 0
Auto back: Auto, 3 minutes
5.5.2 Calibration default value:
Asy: 0 mV
Slope: -59.15 mV/pH @ 25.0°C
Calibration type: TECH-No Cal
Calibration value: None data
Auto back: Auto, 3 minutes
Note: The factory default of calibration presetting is “No Cal”, and the calibration value is “None”. This means that
the user has not calibrated the sensor with the transmitter yet. After finishing every calibration, the display shows
the calibration type and the calibration value. If the equipment have not been calibrated yet, the measurement
takes pre-set Asy and Slope into calculation. The factory default values are subject to change without notice.

6.Settings
Block diagram of setting-part 1
Overview
Mode
Setting
Code
Setting Temperature Setting Relay 1 Setting Relay 2 Setting
Multi-Cal.
Setting
Input
Code
OFF ON
New
Code
Select
pH/ORP
Mode MTC NTC
Relay 1
SP Input
Relay 1
Hys. Input
Select
Relay 1
On/Off
Relay 1
Test
Relay 2
Hys. Input
Select
Relay 2
On/Off
Relay 2
Test
Relay 1
SP Input
Select
No. of
Points PTC
Value
Input Value Correct Value Correct
Select
Relay 1
Hi/Lo
Select
Relay 2
Hi/Lo
English Tradi-
tional
Chinese
Simpli-
fied
Chinese
Clean
Setting
Auto
Return
Setting
Auto Auto
Language
Setting
：
：
：
：
Return to previous
level/action CONTINUED ON NEXT PAGE

Block diagram of setting-part 2
Clean
Setting
Analog 1
pH/ORP
Output 1
Analog 2
Temp.
Output 2
Clock
Setting Digit Filter Setting
Input
Shut down
Time
Input Clean
Hys. Time
Clean
Test
Input
Clean
Active Time
Value corr. to
0 or 4mA
Value corr. to
20mA
Value corr.
to 0 or 4mA
Value corr.
to 20mA
Select
0~20mA or
4~20mA
Set Year
Set Date
Set Time
Number of
Signal
Average
Select
0/20mA or
4/20mA
Back Light
Setting Contrast Setting
Contrast
Return
Setting
Return
Timer
Auto Manual
Exit
Auto On Off
Input
Bright-
ness
Input
Sensi-
tivity
Input
Bright-
ness
Relay2
Setting Code Setting
Select
Clock
On/Off
ON
：
：
：
：
Return to previous
leve
l
/action
Select
Clean
On/Off
Auto
CONTINUED FROM
PREVIOUS PAGE

6.1 Entry of set-up menu
In the measurement mode, pressing the two keys and simultaneously allows
you enter the overview of current setting, and press to enter the set-up mode to
modify the setting if necessary.
Enter set-up menu
“Measurement (Mode)”
Press or
Press
Press or
Press to confirm it
Press