Emerson Rosemount 140 User manual

Quick Start Guide
00825-0100-3140, Rev AA
May 2020
Rosemount™ 140/141/142
Contacting Conductivity Sensors

Essential instructions
Read this page before proceeding!
Emerson designs, manufactures, and tests its products to meet many national and international
standards. Because these instruments are sophisticated technical products, you must properly install,
use, and maintain them to ensure they continue to operate within their normal specifications. You
must adhere to the following instructions and integrate them into your safety program when
installing, using, and maintaining Emerson's Rosemount products. Failure to follow the proper
instructions may cause any one of the following situations to occur: loss of life, personal injury,
property damage, damage to this instrument, and warranty invalidation.
•Read all instructions prior to installing, operating, and servicing the product.
•If you do not understand any of the instructions, contact your Emerson representative for
clarification.
•Follow all warnings, cautions, and instructions marked on and supplied with the product.
•Inform and educate your personnel in the proper installation, operation, and maintenance of the
product.
•Install equipment as specified in the installation instructions of the appropriate Reference Manual
and per applicable local and national codes. Connect all products to the proper electrical and
pressure sources.
•To ensure proper performance, use qualified personnel to install, operate, update, program, and
maintain the product.
•When replacement parts are required, ensure that qualified people use replacement parts
specified by Emerson. Unauthorized parts and procedures can affect the product's performance,
place the safe operation of your process at risk, and VOID YOUR WARRANTY. Look-alike
substitutions may result in fire, electrical hazards, or improper operation.
•Ensure that all equipment doors are closed and protective covers are in place, except when
maintenance is being performed by qualified people, to prevent electrical shock and personal
injury.
Note
The information contained in this document is subject to change without notice.
CAUTION
Sensor/Process Application Compatibility
The wetted sensor materials may not be compatible with process composition and operating
conditions. Application compatibility is entirely the responsibility of the user.
CAUTION
Before removing the sensor, be absolutely certain the process pressure is reduced to 0 psig and the
process temperature is at safe level.
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WARNING
Physical access
Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end
users’ equipment. This could be intentional or unintentional and needs to be protected against.
Physical security is an important part of any security program and fundamental to protecting your
system. Restrict physical access by unauthorized personnel to protect end users’ assets. This is true for
all systems used within the facility.
Contents
Specifications...............................................................................................................................5
Installation................................................................................................................................... 9
Wire Rosemount 140, 141, and 142 sensors...............................................................................14
Retract and insert the Rosemount 141 sensor............................................................................ 18
Remove and reinstall the Rosemount 142 sensor....................................................................... 22
Calibrate and maintain............................................................................................................... 23
Troubleshoot............................................................................................................................. 30
Accessories................................................................................................................................ 34
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1 Specifications
Table 1-1: Rosemount 140 Contacting Conductivity Sensor Specifications
Cell constants
0.1 and 1.0/cm (nominal, to within ±5%)
Wetted materials
Electrodes 316 stainless steel
Body 316 stainless steel
Insulator Polyetheretherketone (PEEK)
O-rings Viton®
Temperature range
Standard 32 to 302 °F (0 to 150 °C)
High temperature 32 to 392 °F (0 to 200 °C)
Pressure
100 psig (791 kPa) maximum
Vacuum
At 1.6-in. Hg (5.2 kPa), air leakage is less than 0.005 SCFM (0.00013 m3/min.)
Junction box
Cast aluminum
Process connection
1-in. (25.4 mm) male pipe thread (MPT) through 1-in. (25.4 mm) full port ball valve
(retractable)
Weight/shipping weight
5 lb./6 lb. (2.5 kg/3.0 kg)(1)
(1) Weights rounded up to nearest whole lb. or 0.5 kg.
Table 1-2: Rosemount 141 Contacting Conductivity Sensor Specifications
Cell constants
0.2 and 1.0/cm (nominal, to within ±5%)
Wetted materials
Electrodes 316 stainless steel
Body 316 stainless steel
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Table 1-2: Rosemount 141 Contacting Conductivity Sensor Specifications
(continued)
Insulator PEEK
O-rings Viton
Temperature and pressure
See Figure 1-1.
Vacuum
At 1.6-in. Hg (5.2 kPa), air leakage is less than 0.005 SCFM (0.00014 m3/min.)
Junction box
Cast aluminum
Process connection
¾-in. (19.1 mm) MPT
Weight/shipping weight
2 lb./3 lb. (1.0 kg/1.5 kg)(1)
(1) Weights rounded up to nearest whole lb. or 0.5 kg.
Table 1-3: Rosemount 142 Contacting Conductivity Sensor Specifications
Wetted materials
Electrodes 316 stainless steel
Body 316 stainless steel
Insulator PEEK (high temperature option)
PCTFE (low temperature option)
O-rings Viton
Temperature and pressure
See Figure 1-1.
Vacuum
At 1.6-in. Hg (5.2 kPa), air leakage is less than 0.005 SCFM (0.00014 m3/min.)
Junction box
Cast aluminum
Process connection
¾-in. (25.4 mm) MPT
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Table 1-3: Rosemount 142 Contacting Conductivity Sensor Specifications
(continued)
Weight/shipping weight
2 lb./3 lb. (1.0 kg/1.5 kg)(1)
(1) Weights rounded up to nearest whole lb. or 0.5 kg.
Figure 1-1: Rosemount 141 and 142 Sensor Pressure/Temperature
Graphs
A. Standard
B. High temperature
C. Saturated steam
D. Standard
E. High temperature
F. Saturated steam
Table 1-4: Specifications for PN 23724-00 Ball Valve Kit
Wetted materials
316 stainless steel except PTFE seat and seals in ball valve
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Figure 1-2: Performance Specifications: Contacting Conductivity -
Recommended Range
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2 Installation
2.1 Unpack and inspect
Procedure
1. Inspect the outside of the carton for any damage.
2. If damage is detected, contact the carrier immediately.
3. Inspect the hardware.
4. Make sure all the items in the packing list are present and in good
condition.
5. Notify the factory if any part is missing.
2.2 Install sensor
Keep ¼ in. (6 mm) clearance between electrodes and piping. The electrodes
must be completely submerged in the process liquid, i.e., to the level of the
threaded connection.
See Figure 2-1 for recommended orientation and installation.
If the sensor is installed in a side stream with the sample draining to open
atmosphere, bubbles may accumulate on the electrodes. Trapped bubbles
will cause errors. As bubbles accumulate, the conductivity reading drops. To
control bubble formation, apply a small amount of back pressure to the
drain.
Figure 2-1: Sensor Orientation
A. Trapped air
B. Trapped sludge
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2.3 Install with ball valve kit (PN 23724-00)
If the ball valve assembly is already in place and the process line is
pressurized, refer to Insert the sensor.
Procedure
1. Install the sensor in either a 1-in. (25.4 mm) national pipe thread
(NPT) weldalet or in a 1-in. (25.4 mm) pipe tee.
2. Remove the plastic shipping cap from the sensor.
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3. Screw the 1-in. (25.4 mm) hex nipple into the weldalet or pipe tee.
Use pipe tape on the threads.
See Figure 2-2.
Figure 2-2: Install with Ball Valve Kit (PN 23724-00)
A. Radius of ball valve kit
B. Process piping
C. Ball valve
D. Sensor compression fitting
E. Sensor
F. 1-in. (25.4 mm) NPT hex nipple
G. Weldalet
H. Put wrench A here and turn.
I. Put wrench B here.
J. Side view
K. Ball valve
L. CAUTION
Process O-ring must be in place and is critical.
Replace if worn or dirty.
M. Wrench B
N. Top view
O. Wrench A
4. Position the sensor for easy access to the ball valve handle, sensor
compression fitting nut, and junction box.
5. Make sure the ball valve is in the fully open position.
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6. Finger tighten the sensor compression fitting nut.
Do not over tighten because the next step is to press the sensor into
the process pipe.
7. Insert the sensor tube until the sensor tip is no closer than 1 in. (25.4
mm) from the far wall of the process pipe.
See Figure 2-2.
8. Tighten the sensor compression fitting nut to hold the sensor tip in
position.
2.4 Install Rosemount 141 sensor
Procedure
1. Install the sensor in a ¾-in. (25 mm) national pipe thread (NPT)
weldalet or in a 1-in. (25.4 mm) pipe tee.
2. Remove the plastic shipping cap from the sensor.
3. Screw the sensor into the fitting. Use pipe tape on the threads.
See Figure 2-3.
Figure 2-3: Install Rosemount 141 Sensor
A. Flow
B. Sensor
C. Tee
D. Weldalet
E. Process piping
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2.5 Install Rosemount 142 sensor
Procedure
1. Install the sensor in a ¾-in. (25 mm) national pipe thread (NPT)
weldalet or in a 1-in. (25.4 mm) pipe tee.
See Figure 2-4.
Figure 2-4: Install 142 Sensor
A. Flow
B. Tee
C. Sensor
2. Remove the plastic shipping cap from the sensor.
3. Screw the sensor into the fitting. Use pipe tape on the threads.
Important
Do not tighten the sensor compression fitting until the sensor is
correctly positioned.
4. If necessary, loosen the sensor compression fitting and position the
sensor so that the tip of the sensor is at least 1 in. (25.4 mm) from
the far wall of the pipe.
5. Tighten the compression fitting using the procedure shown in Figure
2-2.
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3 Wire Rosemount 140, 141, and 142 sensors
Terminals in the junction box are not numbered.
For other wiring diagrams not shown below, please refer to the Liquid
Transmitter Wiring Diagrams. All Rosemount 140 series sensors have a
junction box mounted on the back of the sensor. Figure 3-1 shows wiring
connections in the junction box. Rosemount 141 and 142 sensors have one
gray wire (shown). The Rosemount 140 sensor has two gray wires attached
to the terminal.
Figure 3-1: Sensor Junction Box Wiring
Table 3-1: Wire Color and Connections in Sensor
Color Function
Gray Connects to outer electrode
Clear Coaxial shield for gray wire
Orange Connects to inner electrode
Clear Coaxial shield for orange wire
Red
A. RTD
B. RTD in
C. RTD sense
D. RTD return
White with red stripe
White
Clear Shield for all RTD lead wires
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Figure 3-2: Rosemount 140/141/142 Sensor Wiring to Rosemount 1056,
56, and 1057 Transmitters
Table 3-2: Rosemount 140/141/142 Sensor Wiring to Rosemount 1056, 56, and
1057 Transmitters
Terminal number Wire color Connects to
1 White RTD return
2 White/red RTD sense
3 Red RTD in
4 Clear RTD shield
5 N/A 4CT B
6 N/A 4CT A
7 Clear Shield 2 count
8 Orange Sensor 2CT B
9 Clear Shield 2 count
10 Gray Sensor 2CT A
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Figure 3-3: Rosemount 140/141/142 Sensor Wiring to Rosemount 1066
Transmitter
Table 3-3: Rosemount 140/141/142 Sensor Wiring to Rosemount 1066
Transmitter
Terminal block number Wire color Connects to
TB1 N/A Receive B
TB1 N/A Receive A
TB1 Clear R shield
TB1 Gray Drive B
TB1 Orange Drive A
TB1 Clear D shield
TB2 White Return
TB2 White/red Sense
TB2 Red RTD in
TB2 Clear Shield
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Figure 3-4: Rosemount 140/141/142 Sensor Wiring to Rosemount 5081
Transmitter
Table 3-4: Rosemount 140/141/142 Sensor Wiring to Rosemount 5081
Transmitter
Terminal
number
Wire color Connects to Terminal
number
Wire color Connects to
1 N/A Reserved 9 N/A Drive shield
2 Clear RTD shield 10 Clear Drive
common
3 White RTD common 11 Gray Drive
4 White/red RTD sense 12 N/A N/A
5 Red RTD in 13 N/A N/A
6 N/A N/A 14 N/A N/A
7 Clear Receive
common
15 N/A HART®/
FOUNDATION™
Fieldbus (-)
8 Orange Receive 16 N/A HART/
FOUNDATION
Fieldbus (+)
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4 Retract and insert the Rosemount 141 sensor
Rosemount 141 sensors are retractable.
WARNING
Before retracting the sensor, be absolutely certain that the process pressure
is less than 100 psig (791 kPa) and the process temperature is at a safe level.
4.1 Retract the sensor
Procedure
1. Push in on the sensor junction box and slowly loosen the sensor
compression fitting nut by reversing the sensor tightening procedure
as listed in Figure 2-2.
2. When the sensor compression nut is completely unscrewed, slowly
ease the sensor out until the flared tip of the electrode rests firmly
within the body of the compression fitting body.
3. Close the ball valve completely.
4. CAUTION
Before removing the sensor, be sure the ball valve is completely
closed.
Unscrew the compression fitting body from the reducing bushing
and remove the sensor from the ball valve assembly.
4.2 Insert the sensor
CAUTION
Make sure the process O-ring is clean, lubricated, and in place before
installing the center. Replace if worn.
CAUTION
Do not open the ball valve yet.
CAUTION
The system pressure must be less than 100 psig (791 kPa).
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Procedure
1. Thread the sensor compression fitting body into the reducing
bushing in the rear of the ball valve and tighten.
CAUTION
Damage to the sensor could result.
Do not push past this point.
WARNING
If the sensor comes free of the valve, refer to Figure 2-2 and Figure
4-1 and verify that the valve and associated fittings are as shown. Do
not proceed until the sensor is correctly restrained.
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Figure 4-1: Rosemount 140 with Ball Valve Kit (PN 23724-00)
A. Junction box cover
B. Junction box compression fitting (PN 931020)
C. Sensor compression fitting nut, included in kit (PN 23730-00)
D. Polyetheretherketone (PEEK) split ring (inside)
E. PEEK ferrule (inside)
F. Compression fitting body, included in kit (PN 23730-00)
G. Viton® O-ring (inside) (PN 9550200)
H. Reducing bushing
I. Ball valve kit (PN 23724-00)
J. Flared mechanical stop
K. 1-in. (25.4 mm) national pipe thread (NPT) hex nipple
L. Sensor tube
M. Nylon ferrule (inside)
N. Junction box
2. Slowly open the valve.
WARNING
Stand clear of the sensor.
3. Insert the sensor up to the desired insertion depth and turn the
sensor compression fitting nut until it is finger tight.
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