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Model 224
Operating Instructions
Setra Systems, Inc.
159 Swanson Road, Boxborough, MA 01719
800.257.3872 • www.setra.com
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Table of Contents
1.0 General information ....................................................................................................... 3
2.0 Mechanical installation ................................................................................................ 4
2.1 Media compatibility ...................................................................................................4
...................................................................................... 4
2.3 Media compatibility ...................................................................................................4
3.0 Electrical installation ..................................................................................................... 5
3.1 Voltage output units .................................................................................................. 5
3.2 Current output units .................................................................................................. 6
3.3 ETL Listed to ANSI/ISA-12.2.01-2015 Standards ................................................... 7
3.4 ATEX 2014/34/EU Zone 2 Approval to EN60079-0:2012
and EN60079-15:2010 ...............................................................................................7
4.0 Calibration ...................................................................................................................... 7
4.1 Voltage output zero adjustment ............................................................................... 8
4.2 Voltage output span adjustment .............................................................................. 8
4.3 Current output zero adjustment ............................................................................... 9
4.4 Current output span adjustment .............................................................................. 9
5.0 Return products for repair ...........................................................................................10
6.0 Limited warranty & limitation of repair ....................................................................... 11
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1.0 General information
Your Setra Pressure Transducer has been carefully tested and calibrated before shipment.
Model 224 performance specications are listed on Section 2.2 of this guide.
Setra’s 224 pressure transducers sense gauge, compound or absolute pressure and convert
this pressure to a proportional high level analog output. Two output versions are offered: a
voltage output of 5 VDC FSO (Full Scale Output) and 10 VDC FSO, as well as current output
of 4 to 20 mA.
NOTE: Latest version of this document may be found at www.setra.com.
1.1 EMC certications
This products complies with the latest revision of EN61326-1 and EN61326-2-3 Electrical
Equipment for Measurement, Control and Laboratory use - EMC Requirements for Minimum
Requirements and Industrial Locations. In order to meet EMC compliance the following
conditions must be followed:
1. Shielded cable must be used and the shield must be tied to earth ground (not power
supply ground) on at least one end of the cable shield/drain wire. The shield must
be maintained all the way from the sensor to the power supply.
2. If unshielded cable is used, an earth grounded metal conduit tting can be used to
replace the shielded cable.
3. For a sensor with a metal body or enclosure, the body/enclosure must be grounded
to earth. If a protective metal housing is used, the metal housing should be
grounded to earth.
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2.0 Mechanical installation
2.1 Media compatibility
Model 224 transducer is designed to be used with any gas or liquid compatible with 316L
stainless steel. Never submerge the transducer in any liquids.
2.2 Performance specications
Performance data
Accuracy
Non-linearity, (BFSL) ±0.15% FS
Hysteresis ±0.20% FS
Non-repeatability ±0.02% FS
±0.25% FS
±1.0% of reading
Environmental data
Operating temperature
Storage temperature
-40° to +185°F
(-40° to +85°C)
-40° to +185°F
(-40° to +85°C)
Thermal effects
Compensated range
Zero shift
%FS/100°F(%FS/50°C)
Span shift
%FS/100°F(%FS/50°C)
Warm-up shift 0.1% FS total
+15° to +150°F
(-9° to +65°C)
2.0 (1.8)
2.0 (1.8)
Current unit ordered w/option N1
Operating temperature
Storage temperature
-22° to +176°F
(-30 to +80°C)
-22° to +176°F
(-30° to +80°C)
2.3 Pressure tting
Mounting: Model 224 can be installed with Face Seal ttings or can be butt welded into place.
When installed units with Face Seal Fittings:
1. Alight piping systems to transducer connections
2. Hand tighten nuts
3. Torque nuts by placing wrenches on nuts only (or on nut and wrench flats of
transducer body for units xed male face seals)
Never hold the unit by the electronic housing during installation. Do not over tighten. See
technical documents from tting manufacturer for addition instructions.
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3.0 Electrical installation
3.1 Voltage output units
The Model 224 voltage output transducer is supplied with a multi-conductor cable or various
style connectors. See Diagram1 & 2 for proper connections.
Diagram 1: Connection table for voltage output transducers
Connection Cable wire Bayonet pin 15-pin DSUB 9-pin DSUB
+EXCITATION: Red A 7 4
+OUTPUT: Green B 2 1
-OUTPUT: White C 12 8
-EXCITATION: Black D 5 9
CASE GND: Shielding Shell Shell Shell
EXCITATION: 10-30 VDC for 0.2 to 5.2 VDC and 0 to 5 VDC & 13-30 VDC for 0.2 to 10.2
VDC and 0 to 10 VDC
NOTE: “-EXCITATION” and “-OUTPUT” are connected together internally.
Diagram 2: Transducer pin out
BC
D
4-pin bayonet
A
7
15-pin high density DSUB
41
9
12
52
8
9-pin DSUB
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3.2 Current output units
See sections 3.3 and 3.4 for addition instructions for units with N1 Output Codes.
The Model 224 is a two-wire loop-powered 4 to 20 mA current output unit and delivered
rated current into an external load of 0-800 ohms. The Model 224 is available with a multiconductor cable or various style connectors. Diagram 3 shows electrical connection wiring
for current output transducers.
Diagram 3: Connection table for current output transducers
Connection Cable wire Bayonet pin 15-pin DSUB 9-pin DSUB
+EXCITATION: Red A 7 4
-EXCITATION: Black D & B 5 9
CASE GND: Shielding Shell Shell Shell
Minimum supply voltage: 10 + 0.02 x loop resistance;
Maximum supply voltage: 30 + 0.004 x loop resistance
The power supply must be a DC voltage source with a voltage range between 10 VDC and 30
VDC measured between the “+EXCITATION” and “-EXCITATION”. The unit is calibrated at the
factory with a 24 VDC loop supply voltage and a 250 ohm load.
Current must flow in one direction only. Please observe polarity. See Diagram 4. The cable
shield Drain Wire shall be connected to the earth ground to comply with EMC requirements
and electrical noise rejection.
NOTE: The transducer case and integral bayonet connector shell are electrically connected.
Diagram 4: Current wiring diagram
Setra Model 224
+
+ +
Power Source Load
- -
-
(-) EXC(+) EXC
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3.3 ETL Listed to ANSI/ISA-12.2.01-2015 Standards
The current output unit may be installed in Class 1 Hazardous (Classied)
Group A, B, C, D Division 2 locations, if the unit was ordered N1 designation in
the Part Number, 12th and 13th digits. Safety barriers are not required as long
as the unit is operated under normal conditions with a maximum excitation
voltage of 30 VDC between the input terminals.
• WARNING - EXPLOSION HAZARD. DO NOT REMOVE OR REPLACE
WHILE THE CIRCUIT IS LIVE UNLESS THE AREA IS FREE OF IGNITABLE
CONCENTRATIONS
• WARNING - PLEASE DO NOT CONNECT OR DISCONNECT WHILE ENERGIZED
WARNING - CONNECTORS MUST BE EITHER TOOL-SECURED OR INSIDE A
TOOL ACCESSED ENCLOSURE
• WARNING - THE CABLE AND WIRING METHOD SHALL COMPLY WITH LOCAL
ELECTRICAL CODES, E.G, NEC FOR THE US.
3.4 ATEX 2014/34/EU Zone 2 Approval to EN60079-0:2012 and
EN60079-15:2010
Setra 224 pressure transmitter with N1 sufx is certied by Setra to operate
in ATEX zone 2 areas with Ex marking II 3G Ex nA IIC T4 Gc -30oC<Ta<+80oC.
Safety barriers are not required as long as the unit is operated under normal
conditions with a maximum excitation voltage of 30 VDC between the input
terminals. The following requirements must be met to maintain compliance to
listed standards.
• WARNING - DO NOT SEPARATE WHEN ENERGIZED
• WARNING - DO NOT OPEN, MAINTAIN OR SERVICE IN AN AREA WHERE
EXPLOSIVE ATMOSPHERE MAY BE PRESENT
• A minimum degree of IP54 protection shall be maintained in the hazardous location. The
zero/span plugs shall be installed securely at all times when the transducer is in service.
The mating connector provided by the end user shall be in accordance with all applicable
classes of EN60079-0 and EN60079-15.
• Connectors must be securely attached by tool before power is applied
• The shielded cable must be used and the drain wire of the cable must be connected to the
earth ground. The transducer body must be connected to earth ground.
• The maximum allowable transient disturbance must not exceed more than 40% of the
maximum excitation voltage.
• No adjustment on Zero or Span potentiometer shall be made in the presence, or potential
for, hazardous atmosphere.
4.0 Calibration
All Setra pressure transducers are carefully calibrated to the specic input pressure range
vs. output voltage or current at the factory so little or no eld calibrating is necessary. Zero
and span adjustments can be made by turning the rotatable cover or disengaging the plugs
to expose the zero and span pots. The adjustments pots should be covered after calibration
is complete.
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4.1 Voltage output zero adjustment
Transducer zero may be adjusted by monitoring the voltage between +OUTPUT and -OUTPUT
while turning the zero potentiometer screw. This adjustment should occur with atmospheric
pressure applied for gauge transducers. Absolute and compound transducers should be
adjusted while a full vacuum is applied. Compound transducers may alternatively be adjusted
at atmospheric pressure using the values in Diagram 5.
Diagram 5: Nominal “installed” output at atmospheric pressure
PSI compound
range
-14.7 to 25 2.051 1.851 3.903 3.703
-14.7 to 50 1.336 1.136 2.472 2.272
-14.7 to 100 0.841 0.641 1.482 1.282
-14.7 to 250 0.478 0.278 0.755 0.555
-14.7 to 500 0.343 0.143 0.486 0.286
-14.7 to 1000 0.272 0.072 0.345 0.145
-14.7 to 3000 0.224 0.024 0.249 0.049
BAR compound
range
-1 to 1.7 2.052 1.851 3.904 3.704
-1 to 3.4 1.336 1.136 2.473 2.273
-1 to 7 0.825 0.625 1.450 1.250
-1 to 17 0.478 0.278 0.756 0.556
-1 to 35 0.339 0.139 0.478 0.278
-1 to 70 0.270 0.070 0.341 0.141
-1 to 200 0.225 0.025 0.250 0.050
5 VDC FSO 10 VDC FSO
0.2 to 5.2 VDC 0 to 5 VDC 0.2 to 10.2 VDC 0 to 10 VDC
5 VDC FSO 10 VDC FSO
0.2 to 5.2 VDC 0 to 5 VDC 0.2 to 10.2 VDC 0 to 10 VDC
4.2 Voltage output span adjustment
Zero adjustment must be performed prior to span adjustment. Span adjustment should
only be performed by use of an appropriate pressure standard (electric manometer, digital
pressure gauge, etc) with at least 4X the accuracy of a Model 224. The span may be adjusted
by turning the span potentiometer while full scale pressure is applied to the pressure port.
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4.3 Current output zero adjustment
Transducer zero may be adjusted by monitoring the current output while turning the zero
potentiometer screw. This adjustment should occur with atmospheric pressure applied for
gage transducers. Absolute and compound transducers should be adjusted while a full
vacuum is applied. Compound transducers may alternatively be adjusted at atmospheric
pressure using the values in Diagram 6.
• WARNING: Pressure should be applied with inert gases or clean air only. For
transducers with ATEX Ex marking, no adjustment should be made in the
presence, or potential for, hazardous atmosphere.
Diagram 6: Nominal “installed” output at atmospheric pressure
BAR
compound range
-1 to 1.7 9.93
-1 to 3.4 7.64
-1 to 7 6.00
-1 to 17 4.89
-1 to 35 4.44
-1 to 70 4.23
-1 to 200 4.08
Current output
(mA)
PSI compound
range
-14.7 to 25 9.92
-14.7 to 50 7.64
-14.7 to 100 6.05
-14.7 to 250 4.89
-14.7 to 500 4.46
-14.7 to 1000 4.23
-14.7 to 3000 4.08
Current output
(mA)
4.4 Current output span adjustment
Zero adjustment must be performed prior to span adjustment. Span adjustment should only
be performed by use of an appropriate pressure standard (electric manometer, digital pressure
gauge, etc) with at least 4X the accuracy of a model 224. The span may be adjusted by turning
the span potentiometer while full scale pressure is applied to the pressure port.
• WARNING: Pressure should be applied with inert gases or clean air only. For
transducers with ATEX Ex marking, no adjustment should be made in the
presence, or potential for, hazardous atmosphere.
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5.0 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 eld
adjustments may be necessary. When returning a product to Setra, the material should be
carefully packaged and shipped prepaid to:
Setra Systems, Inc.
159 Swanson Road
Boxborough, MA 01719-1304
Attn: Repair Department
To ensure prompt handling, please supply the following information and include it inside the
package or returned material:
• Name and phone number of person to contact.
• Shipping and billing instructions.
• Full description of the malfunctions.
• Identify any hazardous material used with the product.
Please remove any pressure ttings and plumbing that you have installed and enclose any
required mating electrical connectors and wiring diagrams.
Allow approximately 3 weeks after receipt at Setra for the repair and return of the unit. Nonwarranty repairs will not be made without customer approval and a purchase order to cover
repair chargers.
Calibration Services
Setra maintains a complete calibrations facility that is traceable to the National Institute
of Standards and Technology (NIST). If you would like to recalibrate or recertify your Setra
pressure transducers or transmitters, please call our Repair Department at 800-257-3872
(978-263-1400) for scheduling.
NOTES:
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6.0 Limited warranty & limitation of repair
SETRA warrants its products to be free from defects in materials and workmanship, subject
to the following terms and conditions: Without charge, SETRA will repair or replace products
found to be defective in materials or workmanship within the warranty period; provided that:
a) the product has not been subjected to abuse, neglect, accident, incorrect wiring not
our own, improper installation or servicing , or use in violation of instructions furnished
by SETRA;
b) the product has not been repaired or altered by anyone except SETRA or its authorized
service agencies;
c) the serial number or date code has not been removed, defaced, or otherwise changed;
and
d) examination discloses, in the judgment of SETRA, the defect in materials or workmanship
developed under normal installation, use and service;
e) SETRA is notied in advance of and the product is returned to SETRA transportation
prepaid.
Unless otherwise specied in a manual or warranty card, or agreed to in a writing signed by
a SETRA ofcer, SETRA pressure and acceleration products shall be warranted for one year
from date of sale.
The foregoing warranty is in lieu of all warranties, express, implied or statutory, including but
not limited to, any implied warranty of merchantability for a particular purpose.
SETRA’s liability for breach of warranty is limited to repair or replacement, or if the goods cannot
be repaired or replaced, to a refund of the purchase price.
SETRA’s liability for all other breaches is limited to a refund of the purchase price. In no instance
shall SETRA be liable for incidental or consequential damages arising from a breach of warranty,
or from the use or installation of its products.
No representative or person is authorized to give any warranty other than as set out above or
to assume for SETRA any other liability in connection with the sale of its products.
For all CE technical questions, contact Setra Systems, USA. EU customers may contact our EU
representative Hengstler GmbH, Uhlandstr 49, 78554 Aldingen, Germany (Tel: +49-7424-890;
Fax: +49-7424-89500).
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Setra Systems, Inc.
159 Swanson Road, Boxborough, MA 01719
800.257.3872 • www.setra.com
SS2036 REV. H 12/2018
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