Setra System Model 231 - Manual (Page 4)

4
Installation Guide
Multi-Sense® Model 231 Series
Wet-to-Wet Differential Pressure Transducers
1.0 GENERAL INFORMATION
Every Model 231 has been calibrated and tested before shipment to guarantee
performance of all pressure ranges.
The Model 231 has field selectable unidirectional and bidirectional pressure
ranges, configurable 0 to 5 VDC, 0 to 10 VDC , and 1 to 5 VDC output, true
two-wire 4 to 20 mA output, and auto-zero capability. The Model 231 is factory
calibrated to the highest pressure range. The range label on the side of the unit
indicates the factory calibrated range.
Setra Systems 231 pressure transducers sense differential pressure and convert
this difference in pressure to a proportional high level analog output for unidirec-
tional and bidirectional pressure ranges.
Your Model 231 Multi-Sense pressure transducer has been ordered in one of the
following versions:
2.0 MECHANICAL INSTALLATION
2.1 Media compatibility
Model 231 transducers are designed to be used with any gas or liquid compat-
ible with 17-4 PH stainless steel, The optional 3-valve manifold assembly is
designed to be used with gases or liquids compatible with 360 Brass, Acetal plug
valves and Nitrile O-Rings. Never totally submerge the unit in any liquid.
2.2 Environment
The operating temperature limits of the 231 are as follows:
Compensated Temperature Range
°
F (
°
C) +32 to +130 (0 to +54)
Operating Temperature Range
°
F (
°
C) -4 to +185 (-20 to +85)
Storage Temperature Range
°
F (
°
C) -4 to +185 (-20 to +85)
Version Unidirectional Bidirectional
MS1 5, 10, 20, 50 psid
±
5,
±
10,
±
20,
±
50 psid
MS2 10, 20, 50, 100 psid
±
10,
±
20,
±
50,
±
100 psid
MS3 25, 50, 125, 250 psid
±
25,
±
50,
±
125,
±
250 psid
Model 231