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AccuSense

Model ASM

High Performance Pressure Transducer

Installation Guide

DESCRIPTION

The AccuSense

Model ASM pressure transducer is a high performance pres-

sure transducer designed for accurate, reliable pressure measurements. It has

a high level analog output signal, excellent stability, and secure calibration

which makes it ideal for high performance industrial, laboratory, and engine

test cell applications.

1.0 GENERAL INFORMATION

Every Model ASM has been tested and calibrated before shipment. Specic

performance specications are shown on page 3 of this Guide. Setra Systems

ASM pressure transducers sense gauge, absolute, or vacuum gauge pres-

sure and convert this pressure dierence to a proportional high level analog

output. Voltage outputs of 0 to 5VDC or 0 to 10VDC, and current output of 4

to 20 mA are oered.

2.0 MECHANICAL INSTALLATION

2.1 Media Compatibility

Model ASM transducers are designed for use with gases and liquids compat-

ible with 17-4PH stainless steel.

2.2 Environment

The operating temperature limits of the ASM are -40°C to +85°C (-40°F to

+185°F)

The compensated temperature range is -20°C to +60°C (-4°F to +140°F)

2.3 Pressure Fittings

Available pressure ttings are given in table below:

Pressure Fitting Code Fitting Description

1F 1/8”-27 NPT Female

1M 1/8”-27 NPT Male

2F 1/4”-18 NPT Female

2M 1/4”-18 NPT Male

J7 7/16”- 20 SAE Male

Summary of content (8 pages)

PAGE 1
AccuSenseTM Model ASM High Performance Pressure Transducer Installation Guide DESCRIPTION The AccuSenseTM Model ASM pressure transducer is a high performance pressure transducer designed for accurate, reliable pressure measurements. It has a high level analog output signal, excellent stability, and secure calibration which makes it ideal for high performance industrial, laboratory, and engine test cell applications. 1.0 GENERAL INFORMATION Every Model ASM has been tested and calibrated before shipment.
PAGE 2
.4 Installation of Pressure Fittings Your transducer is designed for the most accurate operation when subjected to pressures within the designated pressure range. Refer to page 4 for proof pressure limits. Standard sealants such as Teflon pipe tape generally are satisfactory on NPT threads. For the most sensitive pressure ranges, excessive high torquing of a metal pressure fitting may cause slight zero shift which may be trimmed out using the zero adjustment.
PAGE 3
The current flows into the +EXC terminal and returns back to the power supply through the -EXC terminal (See Diagram 1). Note: The +SIG Out and -SIG Out terminals are not used. The power supply must be a DC voltage source with a voltage range between 9 and 30 VDC measured between the + and - terminals. The unit is calibrated at the factory with a 24 VDC loop supply voltage. 3.4 Cable for Bayonet Connectors For good EMC performance, shielded cable shall be used and grounded to earth ground.
PAGE 4
.2 Zero Adjustment While applying zero pressure, zero offset may be adjusted by pressing the send button to tare zero. If fine adjustment is needed on analog output, turn the encoder wheel until desired compensation is seen on display. Example for Voltage Output: If 0.0025 VDC is measured, where 0 VDC is desired, turn wheel until -2.5mV is attained, then press send button. Example for Current Output: If 3.990 mA is read on current meter, turn wheel until +0.01 mA is attained, then press send button.
PAGE 5
Performance Data Pressure Ranges Standard Code “00” High Over pressureOption Code “01” Full Scale Range (PSI) Burst Pressure* (PSI) Proof Pressure** (PSI) High Proof Pressure (PSI) 15 25 50 100 150 200 300 500 750 1000 3000 3000 8000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 30 (2x) 50 (2x) 100 (2x) 200 (2x) 300 (2x) 400 (2x) 600 (2x) 800 (1.5x) 1200 (1.5x) 1500 (1.
PAGE 6
Accuracy Code Accuracy A B <±0.05% FS RSS* <±0.1% Reading** C D <±0.1% FS RSS* Non-Linearity <±0.025% FS End Point Typ. <±0.05% FS End Point Typ. Hysteresis <0.03% FS Typ. <0.03% FS Typ. Non-Repeatability <±0.02% FS Typ. <±0.02% FS Typ. Span Setting Tol. <±0.05% FS <±0.1% FS Zero Offset Tol. <±0.05% Typ. Thermal Total Error Band <±0.25% FS (-20°C to 60°C) <±0.1% FS <±0.50% FS (-20°C to 60°C) <±1.5% FS Typ.
PAGE 7
ASM 0 to 300 PSI 0 to 500 PSI 0 to 750 PSI 0 to 1000 PSI 300P 500P 750P 10CP 0 to 150 PSI 0 to 250 PSI 150P 250P 0 to 50 PSI 0 to 100 PSI 0 to 25 PSI 025P 050P 0 to 15 PSI 015P 100P 0 to -14.
PAGE 8
6.0 RETURNING PRODUCTS FOR REPAIR Please contact a Setra application engineer (800-257-3872, 978-263-1400) before returning unit for repair to review information relative to your application. Many times only minor field adjustments may be necessary. When returning a product to Setra, the material should be carefully packaged and accompanied by Setra’s Calibration and Service Order Form found at www.setra.com/tra/repairs/pdf/webrepair.pdf., and shipped prepaid to: Setra Systems, Inc.