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3.3 Remote sensors installation

Conduit Version (P/N: 231GRSX3MX)

For conduit version remote sensors, use the following instructions:

1.  Install the remote sensors into the system plumbing (use 3/4” hex to tighten”) 

 

Important: 

Each remote sensor is labeled “HIGH PRESSURE SENSOR” or “LOW PRESSURE 
SENSOR”, respectively. Match up the high pressure sensor to the high “HI (+)” pressure 
electrical terminals, and the low “LO (-)” pressure sensor to the low pressure electrical 
terminals.  Otherwise, the performance may not meet the product linearity specifications. 

2. Install a 1/2” conduit fitting into the remote sensor top cover and fasten the retaining nut.
3. Feed wires from a flexible conduit through the remote sensor top, cover fasten the wires 

to terminals.

4. Screw on the top cover.
5. Fit conduit into conduit fitting, and tighten conduit watertight strain relief.

To connect the wires from the remote sensor to the unit, remove the terminal blocks from the 
circuit board and use the following chart:
Installation of the Model 231RS is now complete.

Summary of Contents for Multi-Sense 231RS

Page 1: ...Model 231RS Operating Instructions Setra Systems Inc 159 Swanson Road Boxborough MA 01719 800 257 3872 www setra com ...

Page 2: ...unting 4 2 5 Installation procedures 4 3 0 Electrical installation 7 3 1 Electrical termination Wiring 2 wire 4 to 20 mA and Remote zero 7 3 2 Electrical terminations Wiring 3 wire 0 to 5 0 to 10 1 5VDC and Remote zero 8 3 3 Remote sensors installation 9 4 0 Configurations 13 5 0 Return products for repair 14 6 0 Warranty limitation of liability 15 ...

Page 3: ...housing cover Model 231RS pressure transducers sense differential pressure and convert this difference in pressure to a proportional high level analog output for unidirectional and bidirectional pressure ranges Your Model 231RS Multi Sense pressure transducer has been ordered in one of the following versions 231RS w Conduit 231RS w Cable 231RS w Armored Cable is shipping with the following Version...

Page 4: ...SSURE SENSOR Match up the high pressure sensor to the high pressure electrical terminals and the low pressure sensor to the low pressure electrical terminals Otherwise the performance may not meet the product linearity specifications Moisture precautions The Model 231RS is provided with a 0 875 DIA conduit opening for electrical termination intended for a 1 2 I D conduit connection This opening mu...

Page 5: ...Valve B Low side valve 1 Valves not included Pipe Pipe Figure 1 Model 231RS Conduit version P N 231GRSX3MXXX Outline drawing Figure 2 1 98 50 3 4 0 10 2 5 56 141 2 6 0 152 4 2 0 50 8 R 0 1 2 5 0 35 8 Front view Side view 21 95 2x 5 16 131 1 1 56 39 6 1 220 30 99 1 240 0 95 31 50 24 1 1 2 Conduit Opening Bottom view 0 864 ...

Page 6: ...RS Armored Cable Version P N 231GRSXAJXXX Outline Drawing Figure 3 2 0 50 8 1 22 31 1 66 42 2 6 0 152 4 5 56 141 2 0 35 8 8 R 0 1 2 5 1 98 50 3 4 0 10 2 4 87 5 08 129 1 56 39 6 5 16 131 1 1 2 Conduit Opening 0 95 24 1 123 6 Front view Side view Bottom view ...

Page 7: ...emote Zero Model 231RS when configured as a current output transducer is a true 2 wire 4 20 mA current output device and delivers rated current into any external load of 0 250 ohms When configured as a 4 20 mA current output device the current flow is in one direction only PLEASE OBSERVE POLARITY WARNING Damage may result on the unit if AC power is applied when the output switch is configured in p...

Page 8: ... 30 VDC 18 30 VAC nominal output power supply Note The Zero terminals connected to digital output provide a contact closure relay for automatic reset to zero pressure by the monitoring system CAUTION ZERO input is for dry contact do no apply voltage to ZERO Terminals The optional remote zero is a normally open relay wired between COM and REMOTE ZERO terminals In order to initiate ZERO function the...

Page 9: ... sensor to the low pressure electrical terminals Otherwise the performance may not meet the product linearity specifications 2 Install a 1 2 conduit fitting into the remote sensor top cover and fasten the retaining nut 3 Feed wires from a flexible conduit through the remote sensor top cover fasten the wires to terminals 4 Screw on the top cover 5 Fit conduit into conduit fitting and tighten condui...

Page 10: ...ion CAUTION Reverse excitation will permanently damage unit Please follow wiring instructions carefully Figure 6 Dimensional Drawing 1 40 35 48 3 61 91 74 3 4 HEX 1 4 NPT 1 62 41 22 1 68 42 57 in mm 1 2 inch conduit opening Conduit adapter Terminal block GND OUT COM EXC 4 3 2 1 ...

Page 11: ... high HI pressure electrical terminals and the low LO pressure sensor to the low pressure electrical terminals Otherwise the performance may not meet the product linearity specifications 2 Attach the cable provided to the 3 Pin Packard connector on the remote sensor 3 Feed the cable through the PG fitting on the bottom of the unit and tighten the fitting 4 Remove the terminal blocks from the circu...

Page 12: ...NSOR respectively Match up the high pressure sensor to the high HI pressure electrical terminals and the low LO pressure sensor to the low pressure electrical terminals Otherwise the performance may not meet the product linearity specifications 2 Attach the cable provided to the 3 Pin Packard connector on the remote sensor 3 Feed the cable through the PG fitting on the bottom of the unit and tight...

Page 13: ...ctrical connections Electrical termination for power supply 3 wire voltage output and 2 wire true 4 20 mA current output and remote zero wiring BAR PSI Jumper selectable engineering units in Bar ranges or PSI A REV NORM A REV Analog Reverse When in reverse mode the output increases when the differential pressure decreases and decreases as pressure increases NORM When in Normal mode output increase...

Page 14: ...Shipping and billing instructions Full description of the malfunctions Identify any hazardous material used with the product NOTES Please remove any pressure fittings and plumbing that you have installed and enclose any required mating electrical connectors and wiring diagrams Allow approximately 3 weeks after receipt at Setra for the repair and return of the unit Non warranty repairs will not be ...

Page 15: ...herwise specified in a manual or warranty card or agreed to in a writing signed by a SETRA officer SETRA pressure and acceleration products shall be warranted for one year from date of sale The foregoing warranty is in lieu of all warranties express implied or statutory including but not limited to any implied warranty of merchantability for a particular purpose SETRA s liability for breach of war...

Page 16: ...Setra Systems Inc 159 Swanson Road Boxborough MA 01719 800 257 3872 www setra com SS231RS REV E 07 2019 ...

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