EMERSON PT5-07M, PT5-18M, PT5-30M, PT5-50M, PT5-07T DATASHEET

			PT5
	Pressure Transmitters
D	A	T	A	S	H	E	E	T

The PT5 series of Pressure Transmitters convert a pressure into a linear electrical 4 .. 20mA output signal suitable for controlling simple compressor and fan switching to the more sophisticated application of superheat modulation of EX series Electrical Control Valves.

With competitive performance to price characteristics and an easy to install pre-fabricated M12 cable assembly, the PT5 transmitters are the designers choice for all refrigeration and air conditioning applications.

Features

∙Sensitive pressure cells with strong primary output signals for the precise operation of superheat, compressor or fan controls systems

∙Fully hermetic

∙PT5-xxM pressure connector 7/16-20 UNF with Schrader valve opener

∙PT5-xxT with 6mm x 50mm long tube for applications requiring a fully hermetic system solution

∙Output signal 4 to 20 mA

∙Standard pressure ranges compatible with former Emerson pressure transmitters - Sealed gauge pressure

∙Calibrated at pressure and temperature ranges to fulfill demands of today’s refrigeration and HVAC applications

∙Reduced Full Scale Error characteristics over the complete temperature range

∙Easy install M12 electrical connection with pre-assembled cable assemblies available in various lengths

∙Protection class IP 65

∙Vibration, shock and pulsation resistant

∙CE-mark under EC EMC-Directive

Selection Chart, Pressure Transmitters

PT5-xxM

PT5-xxT

PT4-Mxx Cable Assembly

Options (minimum quantity applies)

∙Other pressure ranges and calibrations upon request

∙Self-assembly plug without cable available upon request

	Part No.		Pressur	Output	Fluid	PS:	PT:	Burst	Pressure
	Individually	Multipack	e range	signal	temperature	Max. working	Test	pressure	Connection
Type			for
	packaged	**			range	pressure	pressure
			signal
			output
			(bar)*		(°C)	(bar)*	(bar)*	(bar)*
PT5-07M	802 350	802 350M	-0.8 to 7			27	30	150	7/16” – 20
				4 to 20
PT5-18M	802 351	802 351M	0 to 18			45	50	250
									UNF (with
PT5-30M	802 352	802 352M	0 to 30	mA	-40 to + 100	45	50	250	Schrader
									valve opener)
PT5-50M	802 353	802 353M	0 to 50			72	80	400
PT5-07T	802 370	802 370M	-0.8 to 7			27	30	150
				4 to 20					6mm tube x
PT5-18T	802 371	802 371M	0 to 18			45	50	250
				mA	-40 to + 100				50mm long
PT5-30T	802 372	802 372M	0 to 30			45	50	250
PT5-50T	802 373	802 373M	0 to 50			72	80	400
*) Sealed gauge pressure		**) PT5xxM: 20 pcs, PT5-xxT: 10 pcs
PT5__35070_EN_R01.doc					1 / 4				20.04.2010

			PT5
	Pressure Transmitters
D	A	T	A	S	H	E	E	T

Selection Chart, Plug/Cable Assemblies: assembly fits all models

		Part No.
	Type			Length	Weight	Temperature Range
		Individually	Multipack
		packaged	20pcs		(grams/pcs)
	PT4-M15	804 803	804803M	1.5 m	50	-50 to +80°C static application
	PT4-M30	804 804	804804M	3.0 m	80
						-25 to +80°C mobile application
	PT4-M60	804 805	804805M	6.0 m	140

Note: Longer length of the electrical connection cable beyond 6.0m must be verified by user in term of output signal as well as EMC within installed system.

Introduction

The Emerson pressure transmitters PT5 are designed for pressure sensing and to generate a linear electrical output signal. The products are specifically aimed at applications in the HVACR industry: primarily for refrigeration but also for air conditioning systems.

The PT5 series is protected against short circuit, reverse polarity and over voltage to 36volts.

The standard 4 - 20 mA current output enables easy interfacing with most common signal processing equipment.

Various pressure ranges are available to match the operating pressures commonly encountered in HVACR systems. The PT5 meet the requirements of the European EMC directive and are labelled with the CE-mark according to 2004/108/EEC, EN 61326

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<![endif]>Output Current (mA)

PT5-07

PT5-18

PT5-30

PT5-50

20

16

12

8

4

0

-5	0	5	10	15	20	25	30	35	40	45	50
										Pressure (bar)

Description

At the heart of the transmitter is a thin film pressure sensitive stainless steel diaphragm on which the strain gauges are directly bonded. The direct integration of the strain gauges means no additional errors are introduced between the location where the pressure acts and where it is measured creating a inherently strong design with minimal hysteresis.

The integrated electronic module conditions the output of the pressure cell to produce a temperature compensated signal of 4…20 mA.

The fully welded monolithic construction creates a fully hermetic product which ensures reliable operation and a long life-time expectation even under severe operating conditions. With the high operating and burst pressures, the PT5 can be applied to all requirements of today’s HVAC systems but is particularly suitable for refrigeration applications.

The protective stainless steel diaphragm ensures compatibility with the media frequently encountered in refrigeration systems whilst the Stainless steel housing provides excellent corrosion resistance. The electrical circuit is sealed to the housing which together with the pre-fabricated cable assemblies provide an IP65 solution for the harshest environment.

PT5 transmitters produce a relative output signal after being calibrated at atmospheric pressure and then sealed during production. When using PT5 in heights significantly above sea level the output signal deviation must be taken into account. i.e. at a height of 1000m the signal reads approximately 0.1 bar lower than the actual pressure.

Pressure transmitters PT5 with current output (two wire connection) offer the following advantages:

∙More suitable for signal transmission over long distance

∙Higher immunity to electro-magnetic interference

∙Open circuit detection enables fail-safe operation

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20.04.2010