Setra 231 Data sheet

Multi-Sense® Model 231

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

FEATURES

■ Field Selectable Output - True 4 to 20 mA, 0

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

■ Field Selectable Pressure Ranges

■ Field Accessible Push-Button Zero and Re-

mote Zero

DIFFERENTIAL PRESSURE

■ Dual Sensors

NOTE: Setra quality standards are based on ANSI-Z540-1.
The calibration of this product is NIST traceable.
U.S. Patent nos. 6019002; 6014800

DESCRIPTION

Setra’s Model 231 Multi-Sense Wet-to-Wet differen­tial pressure transducer all-inclusive design provides
users with field accessible ranging, choice of output
and field zeroing.
Choose from three configurable Model 231 pressure
transducers: 5 up to 50 psid, 10 up to 100 psid, or 25
up to 250 psid. Each Model 231 has 4 unidirectional
and 4 bidirectional switch selectable pressure rang­es and can be reconfigured in the field for 0-5 VDC,
1-5 VDC, -0-10 VDC, or 4 to 20 mA output. The Model
231 jumper selectable port swap feature eliminates
costly replumbing if the pressure transducer is im­properly installed or replaced. An optional LCD dis­play is available for on-site indication of line and 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

A B C D Max. Line

MS1 50 25 10 5 50

MS2 100 50 20 10 100

MS3 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)

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 1/8-18 NPT Internal
Electrical Connection 1/2 in. Conduit
Size 4.0 x 6 x 2 in.
(102 x 152 x 51mm)
Weight 1.5 lb
Sensor Cavity Volume 0.2 cc

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.

■ Optional 3- or 5-Valve Manifold

■ Hinged Cover

■ Field Selectable Port Swap

■ Optional LCD Display

■ All Cast Aluminum, NEMA4 Rated Housing

■ CE and RoHS Compliant

APPLICATIONS

■ Energy Management Systems

■ Process Control Systems

■ Flow Measurement of Various Gases or Liq-

uids

■ Liquid Level Measurement of Pressurized

Vessels

■ Pressure Drop Across Filters

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.

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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.

Multi-Sense® Model 231

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

DIFFERENTIAL PRESSURE

DIMENSIONS

R 0.1

2

0.3
9

1.6
40

6.0

152

5.6

141

5.2

131

High Low

1.2
31

1.7
42

1/8” NPTF

1.0
24

2.0
51

WIRING

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

1/2” Conduit
Opening

2.0
51

4.0

102

IN

MM

4.6

117

4.8

122

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

©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

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