Setra 231RS Data sheet

Multi-Sense® Model 231RS

Wet-to-Wet, Differential, Multi-Configurable Pressure Transducer

231RS Cable Version

FEATURES

■ Wet-to-Wet Transducer w/ Remote Sensors

■ Conduit and Cable Versions

■ Field Selectable Output - True 4 to 20 mA,

0 to 5, 1 to 5, and 0 to 10 VDC

231RS Conduit Version

Industry First Wet-to-Wet

Remote Sensor Design

DESCRIPTION

etra’s 231RS with remote sensors reduces labor, materials,
and time. The sensors are installed directly into the pipe

S

and electrical connection is made between the remote
sensors and the Model 231RS via cables or conduit, reducing
labor cost by one-third and the cost of copper to connect the
pressure transducer to the pipe. Startup time is reduced since
purging air out of the lines is not necessary.

The Multi-Sense® Model 231 Wet-to-Wet differential pres­sure transducer’s all inclusive design provides users with field
accessible ranging, choice of output and field zeroing.

NOTE: Setra quality standards are based on ANSI-Z540-1.
The calibration of this product is NIST traceable.

■ Each Unit Provides 4 Unidirectional and 4

Bidirectional Switch Selectable Pressure
Ranges

■ Field Accessible Push-Button Zero and

Remote Zero

■ Jumper Selectable Port Swap

■ Optional LCD

■ All Cast Aluminum, NEMA4 Rated Housing

■ CE and RoHS Compliant

APPLICATIONS

■ Energy Management Systems

■ Process Control Systems

■ Flow Measurement of Various Gases or

Liquids

■ Liquid Level Measurement of Pressurized

Vessels

DIFFERENTIAL PRESSURE

SPECIFICATIONS

Performance Data

Accuracy RSS1 (at constant temp.)
Pressure Ranges A, B, C ±1.0% FS
Pressure Range D ±2.0% FS

Pressure Ranges (Selection Example, Pg.4)

Range
Code

RS1 50 25 10 5 50

RS2 75 37.5 15 7.5 75

RS3 100 50 20 10 100

RS4 150 75 30 15 150

RS5 250 125 50 25 250

Thermal Effects
Compensated Range °F (°C) +32 to +130 (0 to +54)
Zero Shift %FS/100°F (50°C) 2.0 (1.8)
Span Shift %FS/100°F(50°C) 2.0 (1.8)

Warm-up Shift <0.12% FS
Response Time 1 to 5 sec. (selectable )
Proof Pressure 2 x Full Scale
Burst Pressure 15 x Full Scale (50 psi)
10 X Full Scale (75 x 150 psi)
8 x Full Scale (250 psi)

A B C D Max. Line

2

Line Pressure

Determines

Selection of Range

Code

Pressure

Environmental Data

Temperature
Operating3 °F (°C) -4 to +185(-20 to +85)
Storage °F (°C) -4 to +185(-20 to +85)
Vibration 10g from 50 Hz to 2000 Hz

Shock 200g

Physical Description

Case Die Cast Aluminum, Powder
Coated
Pressure Fittings 1/4-18 NPT Male
Electrical Connection 1/2 in. Conduit
Size 4.0 x 6 x 2 in.
(102 x 152 x 51mm)

Weight 1.3 lb (Case Only)

Pressure Media

Liquids or Gases Compatible with 17-4 PH Stainless Steel
Note: Hydrogen not recommended for use with 17-4 PH stainless
steel.

1

RSS of Non-Linearity, Hysteresis, and Non-Repeatability.

2

Units calibrated at nominal 70˚F. Maximum thermal error computed from

this datum.

3

Operating temperature limits of the electronics only. Pressure media

temperatures may be considerably higher or lower.

Electrical Data (Voltage)

Circuit 3-Wire
Excitation 15 to 30 VDC/18 to 30 VAC
(Reverse Excitation Protected)
Output4 0 to 5 VDC
0 to 10 VDC
1 to 5 VDC
Output Impedance 30 Ohms
Current Consumption 8 mA (typ.) at 5 VDC
8 mA (typ.) at 10 VDC
40 mA (typ.) at 18-30 VAC

Electrical Data (Current)

Circuit 2-Wire
(Reverse Excitation Protected)
Output5 4 to 20 mA
External Load 0 to 250 Ohms
Minimum supply voltage (VDC ) = 15 + 0.02 x (Resistance
of receiver plus line).
Maximum supply voltage (VDC) = 30 + 0.004 x
(Resistance of receiver plus line).

4

Calibrated into a 50K ohm load, operable into a 5000 ohm load

or greater.

5

Calibrated at factory with a 24 VDC loop supply voltage and a

250 ohm load.

Specifications subject to change without notice.

©2011 Setra Systems, Inc. All rights reserved. The Setra Systems name and logo are registered trademarks of Setra Systems, Inc. Phone: [phone] • Fax: [phone] • setra.com

1

Multi-Sense® Model 231RS

Wet-to-Wet, Differential, Multi-Configurable Pressure Transducer

WIRINGDIMENSIONS

DIFFERENTIAL PRESSURE

1.98

50.3

Side View

IN

MM

4.00

102.0

6.0

152.4

R 0.1

2.5

0.35

8.8

1.56

39.6

141.2

Conduit Version

5.56

6.00

152.4

5.56

141.2

Front View

1.22

30.9

5.16

131.1

Bottom View

1.98

50.3

1.24

31.5

2 x

0.86

21.9

2.00

50.8

0.95

24.1

IN

MM

DC/AC
Power Supply

Controller

Voltage

Relay

+

+

3-Wire - Voltage Output

0 to 5 VDC

0 to 10 VDC

1 to 5 VDC

Remote Zero

R 0.1

0.35

8.8

2.5

1.22

31.0

Front View

1.56

39.6

2.0

50.8

1.66

42.2

5.16

131.1

Bottom View

Cable Version

4.0

102

Side View

0.95

4.87

123.6

5.08

129.0

DC Power
Supply

Controller

Current

(4-20 mA)

Relay

SSP231RS Rev.A 09/14/111

+

+

2-Wire - Current Output

4 to 20 mA

Remote Zero

2

Phone: [phone] • Fax: [phone] • setra.com ©2011 Setra Systems, Inc. All rights reserved. The Setra Systems name and logo are registered trademarks of Setra Systems, Inc.