KAM LRW User manual

KAM®LRW™
LOW RANGE WATERCUT
User Manual
LRWMANUAL 0321
PTB 08 ATEX 1026
II 2 G Ex db IIB T6 Gb
IECEx PTB 19.0048
Ex db IIB T6 Gb
TEL [phone]
FAX [phone]
Email [email protected]
KAM CONTROLS, INC.
3939 Ann Arbor Drive
Houston, Texas 77063 USA
www.KAM.com
An ISO 9001 certified company

LRWMANUAL 0321 KAM CONTROLS, INC.
1
TABLE OF CONTENTS
SECTION TITLE PAGE
1Introduction 2
•Available Models and Mounting Options 2
•Theory of Operation 3
2Specifications 4
•Specifications 4
3Installation 5
•Installation Flow Requirements 5
•Prior to Installation 6
•Flow through assembly 6
•Insertable/retractable installation 7
•Removal 10
•Wiring 11
4LRW Operation using Realterm 19
•Software configuration 19
•Output data 22
•Inline calibration and verification 26
•Calibration with lab results 28
•Process parameter values 29
•Density input reconfiguration 30
•Changing temperature units 32
•Setting alarm setpoints 33
•Setting alarm mode 34
•Enable/disable Modbus 35
•Change Modbus address 36
•Commmand list 37
5Maintenance 38
•Cleaning/Inspection 38
6Troubleshooting 39
•Checking the LCD Display 39
•Power connections 40
•Checking input power 40
•Checking 5 VDC supply 41
•Loop troubleshooting 41
•RS232 troubleshooting 42
•RS485 troubleshooting 42
APPENDIX A: Modbus Registers 43
KAM CONTROLS, INC. reserves the right to make changes to this document without notice.

LRWMANUAL 0321 KAM CONTROLS, INC.
2
1 INTRODUCTION
AVAILABLE MODELS and MOUNTING OPTIONS
Water 0.377 %
Temp 28.278 C
www.KAM.com
[phone]
[email protected]
Made in the USA
LRW Low Range Watercut
2" Flow Through LRW with included
static mixer and manual draw-off valve
3" and 4" Flow Through LRW with included
static mixer and manual draw-off valve
Flanged Fixed Insertion LRW for pipelines 3" and up
with 2", 3" or 4" flanged process connection
1.25" NPT Fixed Insertion LRW for pipelines 3" – 8"
Insertable/retractable LRW for pipelines 3" and up
2", 3" or 4" flanged seal housing
or 2" MNPT process connection
Water 0.377 %
Temp 28.278 C
www.KAM.com
[phone]
[email protected]
Made in the USA
LRW Low Range Watercut
Water 0.377 %
Temp 28.278 C
www.KAM.com
[phone]
[email protected]
Made in the USA
LRW Low Range Watercut
Water 0.377 %
Temp 28.278 C
www.KAM.com
[phone]
[email protected]
Made in the USA
LRW Low Range Watercut
Water 0.377 %
Temp 28.278 C
www.KAM.com
[phone]
[email protected]
Made in the USA
LRW Low Range Watercut
FIG. 1-1 FLOW THROUGH MODELS
FIG. 1-2 FIXED INSERTION MODELS FIG. 1-3 INSERTABLE/RETRACTABLE MODEL

LRWMANUAL 0321 KAM CONTROLS, INC.
3
INTRODUCTION CONTINUED
The KAM LRW™ Low Range Watercut / BS&W meter uses a patented microwave resonance technology, responding
to the differing electrical properties of water and oil to determine water content for ranges 0-3%, 0-5% and 0-10%.
The technology is highly repeatable and offers industry-leading accuracy (±0.03% up to 3% water). Additionally,
proprietary AnyDensity™ technology allows the instrument to compensate for any change in density across the
entire API gravity range. Compensation is based on a density input from a mass flow meter or densitometer and
all compensation is automatic. This is paramount in situations where a single truck or rail unloading site could see
swings in API gravity from the 20s to the 70s.
The unit can be calibrated and verified in line.
The LRW's high-quality components are made and assembled entirely in the USA, providing reliable and consistent
performance for long-term use.
TABLE 1-1 MEASUREMENT CAPABILITIES: CALIBRATED RANGE AND ACCURACIES
THEORY OF OPERATION
Range (water in oil) 0-3% 3-5% 5-10%
Accuracy ±0.03% ±0.05% ±0.1%

LRWMANUAL 0321 KAM CONTROLS, INC.
4
2 SPECIFICATIONS
Media: Crude oil, water and refined products
Wetted parts: 316 SS, Hastelloy, & PEEK (Other materials available)
Fluid temperature: 32ºF to 176ºF (0ºC to +80ºC)
Ambient temperature: -4º F to 131º F (-20º C to +55º C)
Power requirements: 24 VDC
Power consumption: 12 watts
Available ranges: 0-3%, 0-5%, 0-10% water in oil
Accuracy: +/- 0.03% up to 3% water; +/- 0.05% from 3-5% water; +/- 0.1% from 5-10% water
Repeatability: +/- 0.01%
Resolution: +/- 0.01%
Minimum water detection: 100 ppm
Outputs: 4–20 mA
Alarm relay
RS232/RS485
Input: 4-20 mA for density
Density Correction: AnyDensity™compensates for changes in fluid density across entire API gravity range
(requires density input)
Ingress protection: NEMA IV; IP66
Pressure ratings: ANSI 150, 300, 600, 900
Flow conditions: Well mixed in accordance with KAM recommendations
Hazardous area: PTB 08 ATEX 1026
II 2 G Ex db IIB T6 Gb
IECEx PTB 19.0048
Ex db IIB T6 Gb

LRWMANUAL 0321 KAM CONTROLS, INC.
5
3 INSTALLATION
KAM HIGHLY RECOMMENDS VERTICAL INSTALLATIONS WHEREVER POSSIBLE FOR OPTIMAL MIXING. For LACT
units, truck unloading risers, etc., KAM recommends installation of the LRW in the vertical flow up, immediately after
the pump (OPTION 1) or in the vertical flow down after a static mixer (OPTION 2). For other options, please consult
with the KAM factory.
INSTALLATION FLOW AND LOCATION REQUIREMENTS
PLEASE NOTE: The LRW should always be installed per KAM recommendations, including the mixing requirement
calculated per customer provided flow conditions. Vertical installations are ALWAYS preferred.
QQ
Static Mixer
CAUTION: When installing the LRW®sensor in a pipeline containing petroleum products, petrochemicals,
waste waters with the presence of pressure & temperature, and high-pressure steam refer to the Pipeline Operators'
"Health, Safety and Environmental Policy Procedures" to ensure safe installation.

LRWMANUAL 0321 KAM CONTROLS, INC.
6
Remove all the protective packaging materials, and ensure that the LRW®sensor was not damaged during transit.
The following items are provided with the KAM®LRW®sensor:
One (1) RS232 communication cable, for connecting your PC to the LRW
One (1) USB-to-serial converter, in case your computer does not have an RS232 serial port
Please ensure you have received these items and store them properly, they will be used for initial startup and
operation of the LRW sensor.
REMINDER: Please refer to the Installation Flow Requirements on page 5 of this manual to ensure proper sensor
placement where at all possible.
In installations below -4°C where the LRW is exposed to an open environment, KAM CONTROLS recommends
operators insulate the LRW, and if the pipeline is heated, that the heating trace be extended to include the LRW.
If pipeline flow is going to be stopped for an extended amount of time and the pipeline is not heated, then the LRW
should be removed from the line to avoid damage to the sensor from freezing water.
Flow through (spool) units will be shipped
partially assembled. LRW unit can be wired prior
to insertion into the spool for convenience, but
this is not required.
For 2" units (FIG. 3-1):
1. Grease around the O-ring below the small
flange.
2. Insert LRW body into the spool and ensure
unit is fully seated.
NOTE: LCD screen face should be aligned
with direction of pipe flow.
3. Using a 5/8" Allen wrench, install (8) hex
screws around the circumference of the
flange until tight. Screw manual sample
probe into valve until tight.
PRIORTO INSTALLATION
LRW FLOWTHROUGH ASSEMBLY
For 3" and 4" flow through units (FIG. 3-2):
1. Screw LRW body into spool using 1 3/4"
wrench flat. KAM Controls recommends
using liquid pipe sealant rather than Teflon
tape.
2. Screw manual sample probe into valve
until tight.
Water 0.377 %
Temp 28.278 C
www.KAM.com
[phone]
[email protected]
Madein the USA
LRWLow Range Watercut
Water 0.377 %
Temp 28.278 C
www.KAM.com
[phone]
[email protected]
Madein the USA
LRWLow Range Watercut
Manual
sample probe
Manual
sample probe
Hex nutsO-ring
FIG. 3-1 LRW FLOW THROUGH 2" MODELS
FIG. 3-2 LRW FLOW THROUGH 3" and 4" MODELS
INSTALLATION CONTINUED
Water 0.377 %
Temp 28.278 C
www.KAM.com
[phone]
[email protected]
Made in the USA
LRW Low Range Watercut
1 3/4" wrench flat

LRWMANUAL 0321 KAM CONTROLS, INC.
7
Prior to mounting the LRW™ sensor on the Full-opening Ball Valve, you must determine the insertion length required.
1. Lay the LRW™ sensor on the ground or a table.
2. Loosen the Socket Cap Screws, using a
3/8" Allen wrench on the locking collar. This will
allow the LRW™ shaft to slide through the seal
housing.
FIG. 3-4
FIG. 3-5
INSTALLATION CONTINUED
MAIN LINE INSTALLATION INSERTABLE MODELS
The KAM®LRW sensor should be installed
according to FIG. 3-3. A full-opening ball valve is
used to isolate the LRW®sensor from the pipeline
during installation or removal. The seal housing of
the LRW®sensor allows the probe to be inserted
and removed from the pipe under pressure and
flow conditions. It is the user’s responsibility to
ensure that the LRW®sensor be placed at the most
representative point within the flow profile (see flow
recommendations on page 5 of this manual). The
LRW®sensor should be inserted so that the window
of the probe is located in the center half of the
diameter of the pipeline.
NOTE: If line pressure exceeds 100 psi, use a KAM®
IT Insertion Tool when installing/removing the KAM®
LRW®sensor.
Locking Collar
Seal Housing
Full-opening
Ball Valve
FIG. 3-3 KAM®LRW INSTALLED ON A MAIN PIPE
Socket cap screw
CALCULATINGTHE REQUIRED INSERTION LENGTH
3. Pull the LRW™ back through the seal housing
until the LRW probe is retracted inside the seal
housing. FIG. 3-4 and FIG.3-5.
NOTE: The antennas on the LRW sensor probe
won't necessarily end up all the way inside the
seal housing.
4. Retighten the Socket Cap Screws on the locking
collar. This will prevent the LRW™ shaft from
sliding and the probe from getting damaged
during mounting.

LRWMANUAL 0321 KAM CONTROLS, INC.
8
INSTALLATION CONTINUED
5. Measure the distance (D1) from the outside diameter of main pipe to the end of the connection where the LRW®
sensor is going to be installed. FIG. 3-6a and FIG. 3-6b.
D1
WT
Ls
Pipe OD
Pipe ID
Lt
D1
WT
Pipe OD
Pipe ID
Ls
FIG. 3-6a FIG. 3-6b
6. Calculate the insertion distance:
For flanged Seal Housing models
MID – Minimum Insertion Distance
D1 – Distance from the top of the valve to the pipe
Lg – Gasket Width (Typical 0.134")
WT – Pipe Wall Thickness
Ls – Pipe ID x 0.25 (Measurement Area Length)
Ds – Pipe ID x 0.5 (Measurement Diameter Area)
Minimum Insertion Distance (MID)=D1 + Lg + WT + Ls + LRW Factor
Example: D1=14"
Lg=0.134"
WT=0.25"
ID=8.125"
LRW Factor 2" 150#=1"
MID=14 + 0.134 + 0.25 + (8.125 x 0.25) + 1
MID=17.41"
Take note of the calculated MID and proceed to step 7.
Class Rating 2" Size 3" Size
150# 1.00" 1.20"
300# 1.12" 1.37"
600# 1.50" 1.75"
900# 2.00" 2.00"
TABLE 3-1 LRW FACTOR - Flanged SH

LRWMANUAL 0321 KAM CONTROLS, INC.
9
INSTALLATION CONTINUED
For 2" MNPT Seal Housing models
D1 – Distance from the top of the valve to the pipe
WT – Pipe Wall Thickness
Ls – Pipe ID x 0.25 (Measurement Area Length)
LRW Factor – 1.65"
Lt – Thread Engagement (0.75")
Minimum Insertion Distance (MID)= D1 + WT + Ls + LRW Factor - Lt
Example: D1=14"
WT=0.25"
ID=8.125"
LRW Factor=1.65
Lt=0.75"
MID=14 + 0.25 + (8.125 x 0.25) + 1.65 - 0.75
MID=17.18"
7. Measure the calculated MID from the top of the
Locking Collar and place a mark with a permanent
marker or tape on the Shaft (Do not use anything
sharp to mark the shaft as this will create grooves
that will damage the O-rings in the seal housing.)
FIG. 3-7.
8. You can now attach the LRW to the valve on the
pipeline. For threaded models, KAM CONTROLS
recommends liquid thread sealant and not Teflon
tape for the threaded LRW™ sensor.)
FIG. 3-7
MID
Mark Here
9. Open Full-opening Valve.
10. Loosen Socket Cap Screws on the Locking Collar.
11. Push LRW®sensor in until the mark is at the top edge of the Locking Collar. Ensure that LRW®flow indicator is
aligned with pipeline flow direction. FIG. 3-8.
Mark
FIG. 3-8
Hex Nuts
Flow indicator

LRWMANUAL 0321 KAM CONTROLS, INC.
10
REMOVINGTHE LRW®SENSOR FROM
FLOW THROUGH SPOOL
1. To remove the LRW®sensor, first shut off power to the
instrument.
2. Discontinue flow in loop from the main line and drain fluid
from loop.
3. Using a 5/32" Allen wrench, remove the (10) 32 x 5/8"
Hex screws with on collar (2" models) or unscrewed from
spool body (3" and 4" models) using the 1 3/4" wrench flat.
FIG. 3-10.
4. The probe can then be lifted from the cell for testing/
inspection/calibration purposes.
Removal should be conducted in accordance with all regional
and class requirements.
FIG. 3-10
INSTALLATION CONTINUED
REMOVING AN INSERTABLE LRW SENSOR
1. To remove the LRW sensor, first shut off power to the instrument.
2. Loosen the Socket Cap Screws on the Lock Down Collar, using a 3/8" Allen wrench.
3. Loosen Hex Nuts 1/2 turn.
4. Slide the LRW sensor upward until the probe rests inside the seal housing. There is a mechanical stop when the
unit is fully retracted.
5. Retighten the Socket Cap Screws.
6. Next, close the Full-opening Ball Valve tightly. Drain oil from valve if possible.
7. The LRW sensor may now be unbolted from the system.
NOTE: If line pressure exceeds 100 psi, use a KAM® IT Insertion Tool when installing/removing the KAM®LRW sensor.
Removal should be conducted in accordance with all regional and class requirements.
Water 0.377 %
Temp 28.278 C
www.KAM.com
[phone]
[email protected]
Made in the USA
LRWLow Range Watercut
Water 0.377 %
Temp 28.278 C
www.KAM.com
[phone]
[email protected]
Madein the USA
LRW Low Range Watercut
Hex screws
2" LRW Flow Through model
3" and 4" LRW Flow Through models
1 3/4" wrench flat
12. Re-tighten the Socket Cap Screws so that the gaps between
the two halves of the locking collar are the same distance.
FIG. 3-9.
13. Tighten the hex nuts holding down the Locking Collar one
half turn (FIG. 3-9). These should never be over-tightened.
Their major function is to apply light pressure on the chevron
packing to ensure a seal between the seal housing body and
the insertion shaft.
SECTION A-A
SCALE 1 / 2
1
1
2
2
A A
B B
MATERIAL
FINISH
DRN
THIS DRAWING IN DESIGN AND
DETAIL IS THE PROPERTY OF
KAM CONTROLS INCORPORATED.
IT SHALL NOT BE REPRODICED
AND SHALL BE RETURNED TO US
ON DEMAND
ALL RIGHTS RESERVED
APPVD SCALE DATE
DWG NO. REV
TITLE
UNLESS OTHERWISE
SPECIFIED
ALL DIM IN INCHES
ANGULAR TOL ±1/2
FRACTIONAL TOL ±1/64
3 PLACE DEC ±0.005
2 PLACE DEC ±0.010
REMOVE ALL BURRS
BREAK SHARP EDGES
DO NOT SCALE DWG
SHEET
SS316
Gerry Alejos
1:2 03-13-2013
A
2"-150 Seal Housing
Assembly
211-001-000
Kam
Controls
Incorporated

3939 Ann Arbor Dr.
Houston TX 77063
USA
WWW.KAM.COM
1 OF 1
A
1/4
5/32
FIG. 3-9 TOP VIEW LOCKING COLLAR
Socket Cap
Screw
Locking
Collar
Gap
Socket Cap
Screw
Hex Nut

LRWMANUAL 0321 KAM CONTROLS, INC.
11
INSTALLATION CONTINUED
INPUTS
POWER– GND
POWER+ 24-30 VDC
DENSITY IN Current loop output from mass flow or
densitometer.
GND
INPUT/OUTPUT
232-RXD Console port – communication interface
232-TXD for calibration, connection to PLC
OUTPUTS
4-20– Current output, source powered. Set to requisite
4-20+ percent water at factory.
DOUT Alarm or relay (digital contact closure)
485- Modbus interface
485+
LED INDICATORS
LED1 24 VDC Power
LED2 5 VDC Internal supply
WIRING
Any components attached or installed (e.g. terminal compartments, bushings, explosion-proof cable entries,
connectors) shall be of a technical standard that complies with the specifications on the cover sheet as a minimum
and for which a separate examination certificate has been issued. The operating conditions set forth in the relevant
component certificates must by all means be complied with.
The temperature of the process fluid must not exceed +80 °C.
All wiring and maintenance on the KAM LRW must be done in accordance with regional and classification
requirements. It is the user's responsibility to understand these requirements.
It is also recommended that the LRW be wired with flexible wiring/conduit with additional slack/length in the wire to
accommodate insertion, removal, and testing.
Operator's should take all possible precautions to avoid any moisture from entering the electronics enclosure. The
enclosure should not be left open in inclement weather or for long periods of time, especially during operation
as condensation will accumulate. Lid should be tightly screwed shut, all conduits should be sealed and secured
in accordance with regional and classification requirements, and unused 3/4" NPT openings should be sealed in
accordance with regional and classification requirements. Do not power wash the unit.
• The installed 3/4" NPT plug is not part of the instrument installation and should be replaced by the appropriate
Ex certified 3/4" NPT plug for the final installation.
• The Oil Water Detector KAM OWD/ATD/LRW shall be connected by means of suitable cable entries or conduit
systems, which meet the requirements of IEC 60079-1, sections 13.1 and 13.2, and for which a separate
examination certificate has been issued.
• Cable entries (conduit threads) and sealing plugs of simple designs must not be used. Should the Oil Water
Detector KAM OWD/ATD/LRW be connected by means of a conduit entry which has been approved for this
purpose, the appertaining sealing device shall be provided immediately at the terminal box.
• Openings not used shall be sealed in compliance with IEC 60079-1, section 11.8.
• The connecting wire of the Oil Water Detector KAM OWD/ATD/LRW shall be installed to provide for permanent
wiring and adequate protection against mechanical damage.
• If the temperature at entry fittings should exceed 70 °C, the connecting cables used have to be of the temperature
resistant type.
• The Oil Water Detector KAM OWD/ATD/LRW has to be included into the local equipotential bonding.
• The connecting wire of the Oil Water Detector KAM OWD/ATD/LRW has to be installed in an enclosure which
complies with the requirements of an accepted type of protection acc. to IEC 60079-0, section 1, if the connection
takes place in an area with potentially explosive atmosphere.

LRWMANUAL 0321 KAM CONTROLS, INC.
12
INSTALLATION CONTINUED
WIRING DIAGRAMS
FIG. 3-11 WIRING DIAGRAM
CAUTION: Do not connect power to 4-20 mA output. This will damage the board and void product warranty.
485-
485+
GND
232 RXD
232 TXD
GND
GND
4-20-
4-20+
POWER+
POWER-
CHS
CHS
CHS
GND
DOUT
GND
DENSITY IN
Kam
LED1
TP1
TP3
GND
LED2
KAMLRW www.kam.com
[e-mail]
Phone:[phone]
MADEINUSA
CAUTION: LRW provides the power
for the 4-20 mA loop. Do NOT apply
external voltage as this will damage
the output/board.
Alarm Output
(Dry Contact,
max 1 Amp)
4-20 mA Density
Connection
Power Suply
24 VDC
(12 Watts)
RS232 Serial
Connections
Max 500
Ohms
Max
Load

LRWMANUAL 0321 KAM CONTROLS, INC.
13
INSTALLATION CONTINUED
POWER (+)
POWER (-)
4-20mA (+)
4-20mA (-)
Power Supply
24VDC
(12 Watts)
ISOLATED
RECEIVER
INPUT
(+)
(-)
WRONG:
The LRW provides power for the 4-20mA loop
adding external power can damage the
4-20mA output.
LRW
TYPICAL WIRING
(+)
(-)
(-)
(-)
(+)
POWER (+)
POWER (-)
4-20mA (+)
4-20mA (-)
(+)
24VDC
(12 Watts)
Power Supply
RECEIVER
INPUT
LRW
LRW
(+)
(-)
(+)
(-)
POWER (+)
POWER (-)
4-20mA (+)
4-20mA (-)
Power Supply
24VDC
(12 Watts)
RECEIVER
INPUT
WRONG:
The 4-20 mA (-) and power supply (-) cannot be
the same or connected together.
WRONG
WIRING
The LRW provides power for the 4-20 mA
loop. Adding external power can damage
the 4-20 mA output.
WIRING CONTINUED
TYPICAL POWER AND LOOP WIRING CONFIGURATION
FIG. 3-12
TYPICAL
WIRING
WRONG
WIRING
The 4-20 mA (-) and power supply (-)
cannot be the same or connected
together.

LRWMANUAL 0321 KAM CONTROLS, INC.
14
Power Supply and Output Wiring with External Powered Isolator
Power Supply and Output Wiring with Loop Powered Isolator (Recommended)
Recommended 4-20mA Loop Isolators:
1. ASI X756526 Loop Powered Analog Signal
Isolator,
DIN Rail, Slim Line Single Channel.
2. ASI 451129 4-20mA Loop Powered Analog
Signal
Isolator, Single Channel, DIN Rail
RECEIVER
INPUT
24VDC
(12 Watts)
Power Supply
(-)
(+)
POWER (+)
POWER (-)
4-20mA (+)
4-20mA (-)
(-)
(+)
LRW
INPUT
OUTPUT
Loop Isolator
24VDC
(12 Watts)
Power Supply
RECEIVER
INPUT
(-)
(+)
(+)
INPUT
OUTPUT
Loop Isolator
POWER (+)
POWER (-)
4-20mA (+)
4-20mA (-)
LRW
(-)
(-)
(+)
POWER SUPPLY AND OUTPUT WIRING WITH LOOP POWERED ISOLATOR (RECOMMENDED)
FIG. 3-13
Recommended 4-20 mA Loop
Isolators:
1. ASI X756526 Loop Powered
Analog Signal Isolator, DIN Rail,
Slim Line Single Channel
2. ASI 451129 4-20 mA Loop
Powered Analog Signal Isolator,
Single Channel, DIN Rail
INSTALLATION CONTINUED
WIRING CONTINUED
POWER SUPPLY AND OUTPUT WIRING WITH EXTERNAL POWERED ISOLATOR
FIG. 3-14
Power Supply and Output Wiring with External Powered Isolator
Power Supply and Output Wiring with Loop Powered Isolator (Recommended)
Recommended 4-20mA Loop Isolators:
1. ASI X756526 Loop Powered Analog Signal
Isolator,
DIN Rail, Slim Line Single Channel.
2. ASI 451129 4-20mA Loop Powered Analog
Signal
Isolator, Single Channel, DIN Rail
RECEIVER
INPUT
24VDC
(12 Watts)
Power Supply
(-)
(+)
POWER (+)
POWER (-)
4-20mA (+)
4-20mA (-)
(-)
(+)
LRW
INPUT
OUTPUT
Loop Isolator
24VDC
(12 Watts)
Power Supply
RECEIVER
INPUT
(-)
(+)
(+)
INPUT
OUTPUT
Loop Isolator
POWER (+)
POWER (-)
4-20mA (+)
4-20mA (-)
LRW
(-)
(-)
(+)

LRWMANUAL 0321 KAM CONTROLS, INC.
15
INSTALLATION CONTINUED
DIGITAL RELAY WIRING
FIG. 3-15 DIGITAL RELAY CONFIGURATION
24 VDC
TYPICAL WIRING
WRONG
LRW
DOUT
Low Side High Side
Relay
GND
WRONG
Relay
GND
DOUT
Low Side
LRW
High Side
AC Voltage
Low Side
Relay
High Side
LRW
DOUT
GND GND
Digital Relay Configuration
WRONG
WIRING
TYPICAL
WIRING
WRONG
WIRING

LRWMANUAL 0321 KAM CONTROLS, INC.
16
INSTALLATION CONTINUED
DENSITY INPUT WIRING
Density Wiring
Density meter provides power for the 4-20mA Input
(+)
(-)
Density Meter
DENSITY IN
GND
LRW
4-20mA
OUTPUT
VDC
(+)
(+)
Power Supply
(-)
OUTPUT 1
(-)
RECEIVER
INPUT
Density meter with a 4-20mA Signal Splitter (When a secondary receiver shares one density output)
4-20mA
OUTPUT
Density Meter
(-)
(+)
DENSITY IN
GND
LRW
4-20mA INPUT
OUTPUT 2
4-20mA Signal Splitter
POWER INPUT
(-)
(+)
Density Wiring
Density meter provides power for the 4-20mA Input
(+)
(-)
Density Meter
DENSITY IN
GND
LRW
4-20mA
OUTPUT
VDC
(+)
(+)
Power Supply
(-)
OUTPUT 1
(-)
RECEIVER
INPUT
Density meter with a 4-20mA Signal Splitter (When a secondary receiver shares one density output)
4-20mA
OUTPUT
Density Meter
(-)
(+)
DENSITY IN
GND
LRW
4-20mA INPUT
OUTPUT 2
4-20mA Signal Splitter
POWER INPUT
(-)
(+)
FIG. 3-16 DENSITY METER PROVIDES POWER FOR 4-20 mA DENSITY LOOP
FIG. 3-17 DENSITY METER WITH A 4-20 mA SIGNAL SPLITTER
(WHEN A SECONDARY RECEIVER SHARES ONE DENSITY OUTPUT)

LRWMANUAL 0321 KAM CONTROLS, INC.
17
Pin 1 CD - Not connected
Pin 2 TxD
Pin 3 RxD
Pin 4 DTR - Not connected
Pin 5 GND
Pin 6 DSR - Not connected
Pin 7 CTS - Not connected
Pin 8 RTS - Not connected
Pin 9 RI - Not connected
DB9 Female Connector
LRW
232 TXD
232 RXD
GND
RS232 Wiring Diagram
232 TXD (Red)
232 RXD (White)
GND (Black)
NOTE: To avoid repeatedly opening electronics enclosure during diagnostics, it is recommended operators
permanently wire an RS232 connection to the instrument with corresponding 9-pin connection at junction
box for PC connection.
RS232 WIRING DIAGRAM
INSTALLATION CONTINUED
WIRING CONTINUED
FIG. 3-18
FIG. 3-19
RS232 communication cable
(provided)
RS232 communication cable
(provided)
USB-to-serial converter
(provided)

LRWMANUAL 0321 KAM CONTROLS, INC.
18
INSTALLATION CONTINUED
WIRING CONTINUED
FIG. 3-20
RS485 WIRING DIAGRAM
485 -
485 +
RS485 Wiring Diagram
TDA(-)/ DATA -
TDB(+)/ DATA +
RS485 Converter (2-Wire)
LRW

LRWMANUAL 0321 KAM CONTROLS, INC.
19
4 KAM LRW OPERATION REALTERM
REALTERM SOFTWARE CONFIGURATION
FIG. 4-1
RealTerm software is used for calibration, debugging and configuration of the LRW. To download RealTerm, go to
https://www.kam.com/documentation/ and download the file "Realterm Software" from the "Software" section. Once
downloaded, unzip the file, double-click on the executable file (.exe) and follow on-screen instructions to install.
1. If you haven't already done so, connect the RS232 cable to the LRW board as shown on page 12 of this
manual. To access the boards, unscrew the cover from the Explosion Proof electronics enclosure, unscrew the
LCD Display plate and carefully unplug the LCD connector.
2. Connect the other end of RS232 cable to the serial port of your computer. An RS232 cable for connecting your PC
to the LRW has been supplied with the LRW as well as a USB adaptor in case your computer does not have an
RS232 serial port.
3. Open RealTerm software. A window will open as shown in FIG. 4-1.
4. The window will automatically default to the "Display" tab. Click on the up arrow beneath the "Cols" window until
the number reaches 120. Do not attempt to type the number in as this will result in an error message. If you
receive the error message you must close RealTerm and reopen.
Display
tab
Click until value reaches "120"