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Pressure Transmitter

»Features

»Specifications

»Installation

»Model Codes

»Documentation

»Technology

The Model PT combines micro-machined silicon diaphragms with fully welded stainless steel pressure ports to provide a highly accurate, stable pressure transmitter. It is constructed with the materials and environmental protection required for industrial applications.

The silicon sensors incorporate developments derived from aerospace applications. These developments are used to decrease output noise, non-linearity, and hysteresis and to improve long-term stability.

A detachable industrial electrical connector provides access to independent zero and span controls.

Each transmitter incorporates RFI/EMC and electrical spike protection.

Features

Process pressure range: 1.5 to 1,000 psi (0.1 to 69 bar)
Accuracy of ± 0.25% of full scale
Process temperature range: -40 to 250 °F (-40 to 121°C)
2-wire, 4 to 20 mA output
CE and FM approved

Performance Specifications
Accuracy	The best straight line - determined from the combined effects of non-linearity, hysteresis, and repeatability	±0.25% of full scale
	15 to 122°F (-9.4 to 50°C)	1.0% of full scale
	-5 to 175°F (-20.6 to 79.4°C)	2.0% of full scale
Ambient Temperature Effect	15 to 122°F (-9.4 to 50°C)	2.0% full scale
Ambient Temperature Effect	-5 to 175°F (-20.6 to 79.4°C)	3.0% of full scale

Operating Specifications
Service	Liquid, gas, and steam
Operating Pressure Range	7 models from 0 to 1000 psig (0 to 69 barg)
Proof Pressure	The rated pressure can be exceeded by 2X without degrading performance
Operating Temperature Range	Ambient	-40 to 175°F (-40 to 80°C)
	Process media	-40 to 250°F (-40 to 121°C)
	Storage	-40 to 250°F (-40 to 121°C)
Power Supply Requirements	9 to 30 VDC, across red wire (positive) and blue wire (negative). This voltage must appear across the transmitter terminals
Output Signals	4 to 20 mA (2-wire configuration) proportional for zero to full-scale pressure

Physical Specifications
Materials of construction	Isolated Diaphragm	HastelloyC^®-276
	Tranducer Body	316 stainless steel
Process connection	1/4" NPT female
Calibration standards	Transmitters are calibrated against precision presure calibration equipment traceable to NIST.
Weight	14 oz. nominal
Electrical connection	Two 22 AWG wires

For installation information, contact your local EMCO representative or the factory.

Model Codes
Description	Part Number
PT for pressure range 0 to 50 psig (0 to 3.44 barg)	011115-1
PT for pressure range 0 to 100 psig (0 to 6.89 barg)	011115-2
PT for pressure range 0 to 150 psig (0 to 10.34 barg)	011115-3
PT for pressure range 0 to 200 psig (0 to 13.79 barg)	011115-4
PT for pressure range 0 to 250 psig (0 to 17.24 barg)	011115-5
PT for pressure range 0 to 500 psig (0 to 34.47 barg)	011115-6
PT for pressure range 0 to 1000 psig (0 to 68.95 barg)³	011117-2
PT to accomodate special requests and bar scaling¹	011117-1
Mounting kit (includes bleed valve, siphon tube, plug, nipple, and tee) must be used with PT if process temperature is above 250°F (121°C)	010589-4

Determine the pressure range that is most appropriate for your application. Contact your EMCO representative for details.
Specify the typical service conditions. A siphon tube on the PT is required for all applications above 250°F (121°C)
Not FM approved.


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	EMCO Flow Systems is a division of Spirax Sarco, Inc. Copyright 2008. All rights reserved.