Rosemount Analytical 140, 142 Specifications
Rosemount™ 140/141/142
Contacting Conductivity Sensors
Product Data Sheet
June 2017
LIQ-PDS-140
Make reliable conductivity measurements with Rosemount 140 series conductivity sensors
Rosemount 140, 141, and 142 sensors are contacting conductivity sensors used for measuring electrolytic conductivity in
applications ranging from high purity water to clean cooling water. These sensors are ideal for use in clean, non-corrosive water having
conductivity less than about 20,000 μS/cm.
Rosemount140/141/142 Contacting Conductivity Sensors
Overview
Retractable Rosemount 140
Perform maintenance and replace sensors easily by removing
the sensor from process piping without having to shut down
and drain the line or vessel.
Compatible with 1 in. full port ball valves (sold separately).
Versatile Rosemount 141 and 142
¾ in. MPT process connections for screw-in type installation.
Robust Sensor Construction
High temperature options allow sensors to be used in process
temperatures up to 200 °C.
Easily wire sensors to transmitters through an integral cast
aluminum junction box.
June 2017
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
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Dimensional and Installation Drawings . . . . . . . . . . . . . . 8
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
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June 2017
Rosemount140/141/142 Contacting Conductivity Sensors
Ordering Information
The Rosemount 140 contacting conductivity sensor is a retractable type sensor used to
measure conductivity in process liquids having moderately high conductivity. Sensors
are available in 0.2/cm and 1.0/cm cell constants. Interconnecting cable and ball
valve/retraction assembly must be ordered separately.
Table 1. Rosemount140 Contacting Conductivity Sensor ordering information
Model Sensor type
140 Contacting Conductivity Sensor
Cell Constant and Temperature Construction
54 0.2/cm cell constant – Standard temperature up to 150 °C
55 0.2/cm cell constant – High temperature up to 200 °C
56 1.0/cm cell constant – Standard temperature up to 15 0 °C
57 1.0/cm cell constant – High temperature up to 200 °C
Typical Model Number:140-56
The Rosemount 141 contacting conductivity sensor is a screw in type sensor available
with 0.2/cm and 1.0/cm cell constants. Interconnecting cable for wiring between sensor
junction box and transmitter is sold separately.
Table 2. Rosemount141 Contacting Conductivity Sensor ordering information
Model Sensor type
141 Contacting Conductivity Sensor
Cell constant
04 0.2/cm cell constant
06
1.0/cm cell constant
Temperature construction
13 Standard temperature up to 150 °C
14 High temperature up to 200 °C
RTD
54 Pt-100
Typical model number:141-06-14-54
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Rosemount140/141/142 Contacting Conductivity Sensors
The Rosemount 142 contacting conductivity sensor is a screw in type sensor available
with 0.01/cm and 0.1/cm cell constants. Interconnecting cable for wiring between sensor
junction box and transmitter is sold separately.
Table 3. Rosemount142 Contacting Conductivity Sensor ordering information
Model Sensor type
142 Contacting Conductivity Sensor
Cell constant
01 0.01/cm cell constant
June 2017
03
0.1/cm cell constant
Temperature construction
13 Standard temperature up to 150 °C
14 High temperature up to 200 °C
RTD
54 Pt-100
Typical Model Number: 142-01-13-54
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www.Emerson.com/RosemountLiquidAnalysis
June 2017
Rosemount140/141/142 Contacting Conductivity Sensors
Specifications
Table 4. 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 PEEK
O-rings Viton
Temperature range
Standard 32 °F to 302 °F (0 °C to 150 °C) maximum
High temperature 32 °F to 392 °F (0 °C to 200 °C) maximum
Pressure
100 psig (791 kPa abs) maximum
Maximum retraction pressure
100 psig (791 kPa abs)
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
1 in. MPT through 1inch full port ball valve (retractable)
Weight/shipping weight
5 lb /6 lb (2.5 kg / 3.0 kg)
Weights rounded up to nearest whole lb or 0.5 kg
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