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
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