Setra 230 Operating Manual

Model 230

Operating Instructions

Setra Systems, Inc.

159 Swanson Road, Boxborough, MA 01719

800.257.3872 • www.setra.com

Table of Contents

1.0 General information ....................................................................................................... 3

2.0 Mechanical installations ...............................................................................................3

2.1 Media Compatibility .................................................................................................. 3

2.2 Environment ...............................................................................................................3

2.3 Pressure Fittings .......................................................................................................3

2.4 Moisture Precautions ................................................................................................ 3

2.5 Mounting .................................................................................................................... 3

2.6 Installation Procedures ............................................................................................. 4

2.7 Bleeding the Pressure Ports ..................................................................................... 4

2.8 Optional 3-Valve Manifold Procedure ...................................................................... 5

2.9 Optional 5-Valve Manifold Procedure ...................................................................... 6

3.0 Electrical installation ..................................................................................................... 7

3.1 Voltage Output Units ................................................................................................. 7

3.2 Current Output Units ................................................................................................. 7

4.0 Calibration ...................................................................................................................... 8

4.1 Voltage Output Zero Adjustment .............................................................................. 8

4.2 Voltage Output Span Adjustment ............................................................................. 8

4.3 Current Output Zero Adjustment .............................................................................. 8

4.4 Current Output Span Adjustment ............................................................................. 9

5.0 Return products for repair ............................................................................................. 9

6.0 Limited warranty and limitation of liability ................................................................... 9

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1.0 General information

Every Model 230 has been tested and calibrated before shipment. Setra Systems 230
pressure transducers sense differential pressure and convert this difference in pressure to a
proportional high level analog output. The 230 is supplied with either a 0 to 5 VDC or 0 to 10
VDC output or current output of 4 to 20 mA.

2.0 Mechanical installation

2.1 Media Compatibility

Model 230 transducers are designed to be used with any gas or liquid compatible with 17-4
PH stainless steel, 300 series stainless steel, and viton/silicone or Buna-n “O”-Rings. The
optional 3-valve or 5-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 unit
in any liquids.

2.2 Environment

The operating temperature limits of the 230 are as follows:
Operating Temperature Range °F (°C) 0 to +175 (-18 to +80)
Compensated Temperature Range °F (°C) +30 to +150 (-1 to +65)

2.3 Pressure ttings

Typically, standard pipe ttings and installation procedures should be used. The Model 230
has 1/4”-18 NPT internal ttings. The high pressure port is labeled “HIGH”. The optional
3-valve and 5-valve manifold assembly is supplied with 1/4”-18 NPT internal ttings.

2.4 Moisture precautions

The Model 230 is provided with a 0.875 DIA. conduit opening for electrical termination, intended
for a 1/2” I.D. conduit connection. This opening must be sealed according to standard industry

practice in order to prevent moisture ingress into the Model 230.

2.5 Mounting

The Model 230 is supplied with a mounting bracket and two 6-32 x 3/8 hex head screws.

Attach bracket to mounting location rst, using holes or band clamp notches available on

large section of the bracket. Attach transducer to bracket by using the two 6-32 x 3/8 hex head
screws and the two tapped holes located on the underside of the transducer.

3

Top view

Transducer mounting holes
(screws provided: mounts to
bottom of 230 transducer)

in

3.00
(76)

2.50

0.43
(11)

(64)

Front view

Notched for clamp mounting

0.52
(13)

(mm)

0.88
(22)

Ø 0.156

(Ø 0.096)

1.30
(33)

Ø 0.875

(Ø 22)

Conduit opening

1.63
(41)

Side view

With transducer
mounted to bracket

2.6 Installation procedures

If the Model 230 is supplied with an optional 3-valve or 5 valve manifold assembly, refer to

Section 2.8 and 2.9. Optional 3-Valve and 5-Valve Manifold Assembly Procedure, for further

installation procedures. If the Model 230 is not supplied with a Setra 3-valve or 5-valve

manifold, the following installation procedure is recommended.

For differential pressure measurements at high line pressure (350 psig max.), it is
recommended that the pressure sensor be installed with a valve in each line, plus a shunt
valve across the high and low reference pressure ports as shown.

1.50
(38)

1.63
(41)

High

Valve A

Valve C

High

Differential

Pressure Sensor

Low

Low

Valve B

Valve A = High side valve
Valve B = Low side valve

Valve C = Shunt valve

2.7 Bleeding the pressure ports

3 bleed screws are on the side of the unit (2 for low pressure port, 1 for high pressure port).

Install the transducer in its intended location and pressurize the ports. Back off the rst bleed

screw mounted on the flat side of the sensor body (2 turns max.) until liquid begins to flow
out. After only bubble-free liquid flows out, retighten the bleed screw. Repeat same procedure

for the second set of bleed screws located on the round section of the low pressure tting.

Valve C should be open and Valves A and B closed whenever the system is rst being wetted
or pressurized. Valves A and B should then be opened slowly to avoid hammering. Valve C can

then be closed and the system is operating.

When the differential pressure sensor is to be removed, Valve C must be opened rst, then

Valves A and B can be closed.

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