Setra-system Model 265 User Manual download pdf

Setra Systems Model 265

Differential Pressure Transducer

1.0 GENERAL INFORMATION

Every Model 265 has been tested and calibrated before shipment. Speciﬁc

performance speciﬁcations are shown on page 3 of this Guide.

Setra Systems 265 pressure transducers sense differential or gage (static) pres-

sure and convert this pressure difference to a proportional high level analog

output for both unidirectional and bidirectional pressure ranges. The Model

265 is available in the following excitation and output versions:

Excitation Output

9-30 VDC 0-5 VDC

9-30 VAC 0-5 VDC

12-30 VAC 0-10 VDC

9-30 VDC (measured between the + and - terminals) 4-20 mA

Check the label on the unit to conﬁrm the excitation and ouput.

2.0 MECHANICAL INSTALLATION

2.1 Media Compatibility

Model 265 transducers are designed to be used with air or nonconducting

gases. Use with liquids or corrosive gases will damage the unit.

2.2 Environment

The operating and compensated temperature limits of the 265 are 0°F to

+150°F (-18°C to +65°C).

2.3 Pressure Fittings

The Model 265 is supplied with two factory installed 1/4” O.D. pressure

ﬁttings for the pressure signal connection and typically installed with 1/4”

push-on tubing. Both the positive (high) pressure port and the reference (low)

pressure port are located on the front of the unit, labeled “HIGH” and “LOW”

respectively. For best results (shortest response times), 3/16” I.D. tubing is

suggested for tubing lengths up to 100 feet long, 1/4” I.D. for tubing lengths

up to 300 feet, and 3/8” I.D. for tubing lengths up to 900 feet.

3.0 ELECTRICAL INSTALLATION

If the Model 265 is supplied with the optional Conduit Enclosure, access the

electrical terminations by removing the cover.

For CE compliance a shielded cable with both ends properly grounded is

required.

3.1 Voltage Output Units

The Model 265 voltage output is a 3-wire circuit, with three terminals avail-

able for wiring. These terminals have the designation COM, OUT and EXC (see

Diagram 1). [Note: The - designation above COM and the + designation above

EXC are designations for the current output terminals.] The -Excitation and

-Output are commoned on the circuit (see Diagram 2). The 265 voltage output

can operate from 9-30 VDC or 9-30 VAC excitation with 0-5 VDC output, or 12-

30 VAC excitation with 0-10 VDC output.

Installation Guide

1 2 3 4

Installation Guide 1
4.0. CALIBRATION 2

Summary of Contents

Page 1 - Installation Guide

Setra Systems Model 265Differential Pressure Transducer 1.0 GENERAL INFORMATION Every Model 265 has been tested and calibrated before shipment. Spe

Page 2 - 4.0. CALIBRATION

2 4.0. CALIBRATION The 265 transducer is factory calibrated and should require no ﬁeld adjust- ment. Generally, the mounting position will have a

Page 3

3 location of zero adjustment.) For 0-5 VDC output units, the factory settings are 0.0VDC (±50mV) for unidirectional pressure ranges and 2.5VDC

Page 4

4 159 Swanson Road, Boxborough, MA 01719-1304 Tel: 800-257-3872/978-263-1400 SS2009 Rev.G 08/25/096.0 RETURNING PRODUCTS FOR REPAIRPlease contact

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Setra-system Model 265 User Manual

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