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

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.

PT5

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

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

Selection Chart, Pressure Transmitters

Part No.

Type

Individually

packaged

Multipack

**

(bar)* (°C) (bar)* (bar)* (bar)*
PT5-07M 802 350 802 350M -0.8 to 7
PT5-18M 802 351 802 351M 0 to 18 45 50 250
PT5-30M 802 352 802 352M 0 to 30 45 50 250
PT5-50M 802 353 802 353M 0 to 50
PT5-07T 802 370 802 370M -0.8 to 7
PT5-18T 802 371 802 371M 0 to 18 45 50 250
PT5-30T 802 372 802 372M 0 to 30 45 50 250
PT5-50T 802 373 802 373M 0 to 50

*) Sealed gauge pressure **) PT5xxM: 20 pcs, PT5-xxT: 10 pcs

PT5__35070_EN_R01.doc 1 / 4 20.04.2010

Pressur
e range

for
signal
output

Output

signal

4 to 20

mA

4 to 20

mA

Fluid

temperature

range

-40 to + 100

-40 to + 100

PS:

Max. working

pressure

PT:

Test

pressure

27 30 150

72 80 400
27 30 150

72 80 400

Burst

pressure

Pressure

Connection

7/16” – 20

UNF (with

Schrader

valve opener)

6mm tube x

50mm long

PT5

Pressure Transmitters

D A T A S H E E T

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

Part No.

Type

PT4-M15 804 803 804803M
PT4-M30 804 804 804804M
PT4-M60 804 805 804805M

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.

Individually

packaged

Multipack

20pcs

Length

1.5 m 50

3.0 m 80

6.0 m 140

Weight

(grams/pcs)

Temperature Range

-50 to +80°C static application

-25 to +80°C mobile application

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

PT5-07 PT5-18 PT5-30 PT5-50

20
16
12

8

Output Current (mA)

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

PT5__35070_EN_R01.doc 2 / 4 20.04.2010

PT5

0.02A

Pressure Transmitters

D A T A S H E E T

Cross Reference

PT5 series offers a one for one replacement for Emerson transmitter series PT3 & PT4 series

PT3 series
with 2 meter

PT4 series with cable and plug assembly

PT5 series with cable and plug assembly

fixed cable

PT3-07A PT4-07S and PT4-L30 PT4-07M and PT4-M30 PT5-07M /07T and PT4-M30
PT3-18A PT4-18S and PT4-L30 PT4-18M and PT4-M30 PT5-18M /18T and PT4-M30
PT3-30A PT4-30S and PT4-L30 PT4-30M and PT4-M30 PT5-30M /30T and PT4-M30

n/a n/a PT4-50M and PT4-M30 PT5-50M /50T and PT4-M30

Technical data

Supply voltage
Nominal

Range (polarity protected) 7 ... 30 Vdc Burst pressure refer to Table on page 1
Permissible noise & ripple

Influence of supply voltage

Operating current

Load resistance

Response time < 5 ms

Mounting position Non position sensitive

Temperatures
Operating ambient housing

Medium
Transport and storage

Weight approx.

(without plug and cable assembly)

Accuracy performance

Type Total error * Temperature range
PT5-07M/T ≤ ±1% FS -40 ….+80 °C
PT5-18M/T ≤ ±1% FS -20…. +60 °C
PT5-30M/T ≤ ±1% FS

≤ ±2% FS

Typically ≤ ±2% FS

PT5-50M/T ≤ ±1% FS

≤ ±2% FS

Typically ≤ ±2% FS

*) Total error includes non-linearity, hysteresis, repeatability as well
as offset and span drift due to the temperature changes.
Note: %FS is related to P

ercentage of Full sensor Scale.

24 Vdc

< 1 V

p-p

< 0,02 %FS/V

Maximum ≤ 24 mA
4 to 20 mA output

RL ≤

Ub - 7.0V_

Refer to operating
instructions for more details

-25.....+80 °C

-40...+100 °C

-25.....+80 °C

80 grams

0 …. +40 °C

-20 …. +60 °C

-40 …. +80 °C
0 …. +40 °C

-20 …. +60 °C

-30 …. +80 °C

Sensor lifetime

Electrical connection

all versions Transmitters

PT4-Mxx Cable Assemblies

≥ 10.000.000 cycles
at full stroke at 25°C

M12 connection to EN61076­2-101 part 2

Pre-fabricated with various
cable lengths

Medium compatibility

not suitable for ammonia and

HFC, HCFC, CFC

inflammable refrigerants!
Approvals
CE marking according to PED
CE marking according to EMC

Not allowed (SEP)
CE marked according to

2004/108/EEC, EN 61326

(Certificate upon request)

Vibration at 10…2000Hz max. 4g

Protection class IP65 (acc. to EN 60529)

Materials
Housing, pressure connector

and diaphragm with medium
contact

stainless steel

1.4534 / AISI 316L

PT5__35070_EN_R01.doc 3 / 4 20.04.2010

PT5

4 ... 20 mA

5

Pressure Transmitters

Mechanical and Electrical connections

D A T A S H E E T

PT4-Mxx

M12

BN

24 Vdc

1

WH

PT5-xxM
(top view)

Dimensions (in mm)

PT5-xxM Series overall dimensions PT5-xxT Series overall dimensions

The PT4-Mxx cable assembly
can only be fitted onto the PT5
Pressure Transmitters one way.

Locate the corresponding lug
shown as (1) opposite.

BN = brown, WH = white
(5) = Electronic Controller e.g.

EC2 & EC3 Series

Plug assembly with Removal Dimensions

38 46

EMERSON is not to be held responsible for erroneous literature
regarding capacities, dimensions, applications, etc. stated herein.
Products, specifications and data in this literature are subject to change
without notice. The information given herein is based on technical data
and tests which EMERSON believes to be reliable and which are in
compliance with technical knowledge of today. It is intended only for use
by persons having the appropriate technical knowledge and skills, at their

Emerson Electric GmbH & Co. OHG
ALCO CONTROLS
Heerstraße 111
71332 Waiblingen
Germany

Phone
Fax ...[phone]

www.emersonclimate.eu

PT5__35070_EN_R01.doc 4 / 4 20.04.2010

12

own discretion and risk. Since conditions of use are outside of
EMERSON’s control we can not assume any liability for results obtained
or damages occurred due to improper application. Our products are
designed and adapted for fixed locations. For mobile applications failures
may occur. The suitability for this has to be assured from the plant
manufacturer which may include making appropriate tests.
This document replaces all earlier versions.

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Russia & Cis
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Sweden & Norway
UK & Ireland

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