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Setra Model 227

Ultra High Purity 1 1/8’’ Down-Mount

“C” Seal and “W” Seal Pressure Transducer

1.0 GENERAL INFORMATION

Every Model 227 has been tested and calibrated before shipment. Model 227

performance specifications are listed on Page 6 of this Guide.

Setra Systems 227 pressure transducers measure 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), and a current output of 4 to 20 mA .

Note: These instructions are also available on our website at www.setra.com.

1.1 EMC Certification

This product complies with EN61326 Electrical Equipment for Measurement,

Control and Laboratory use – EMC Requirements for Minimum Requirements

and Industrial Locations. Special caution should be taken to meet Standard

EN61000-4-5: 1995 Surge Immunity if any of the following conditions apply to

the installation: The product is installed outside; all or any part of the cable is

exposed to the outside; the cable is greater than 30 meters in length. In order

to meet the Surge Immunity requirements, the following conditions must be

followed during installation:

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 sensor to the power supply.

2. If unshielded cable is used, an earth grounded metal conduit fitting 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

4. If a protective plastic housing is used, the housing must be able to withstand at least

2 KV from the housing to earth ground, without damaging the circuit.

2.0 MECHANICAL INSTALLATION

2.1 Media Compatibility

Model 227 transducers are designed to be used with any gas or liquid compat-

ible with 316L Stainless Steel. Never submerge the transducers in any liquid.

2.2 Environment

The operating temperature limits of the 227 are as follows:

Operating Temperature Range °F (°C) -40 to +185 (-40 to +85)

Compensated Temperature Range °F (°C) +15 to +150 (-9 to +65)

Operating temperature limits with Option N1 are as follows:

Operating Temperature Range °F (°C) -22 to +176 (-30 to +80)

Compensated Temperature Range°F (°C) +15 to +150 (-9 to +65)

2.3 Pressure Fittings

Mounting - Model 227 pressure transducers are supplied

with 1.125” down-mount “C” or “W” seal base. (Note: The

torque values listed are typical for most systems, please

adjust the values to fit your system.) The tightening

sequence forms a leak tight seal between the base block

and the unit. Using 4 screws to install the unit, follow the

torque sequence pattern in Diagram 1. Use a torque driver and

torque all 4 screws to 25 in. lbs, repeat sequence and torque all 4 screws to 35 in. lbs,

then repeat sequence for 45 in. lbs.

Leak

check

hole

Diagram 1

Summary of content (8 pages)

PAGE 1
Setra Model 227 Ultra High Purity 1 1/8’’ Down-Mount “C” Seal and “W” Seal Pressure Transducer 1.0 GENERAL INFORMATION Every Model 227 has been tested and calibrated before shipment. Model 227 performance specifications are listed on Page 6 of this Guide. Setra Systems 227 pressure transducers measure gauge, compound or absolute pressure and convert this pressure to a proportional high level analog output.
PAGE 2
.4 Venting Model 227 gauge or compound transducers are vented through the electronics housing. 3.0 ELECTRICAL INSTALLATION 3.1 Voltage Output Units The Model 227 voltage output transducer is supplied with a 6ft. multiconductor cable, Bayonet style connector, or D-Sub style connectors. The voltage output is either 5 VDC FSO or 10 VDC FSO. Diagram 2 shows electrical connection wiring for voltage output transducers, and the excitation required.
PAGE 3
Current must flow in one direction only - Please observe polarity. (See Diagram 4) We suggest the cable shield Drain Wire be connected to the system’s loop circuit ground for optimum electrical noise reduction. On transducers with integral connectors (e.g.
PAGE 4
should be adjusted with the unit at atmospheric pressure and the output adjusted as noted in Diagrams 5 & 6 on pages 4 & 5. Zero and span adjustments can be made by turning the rotatable access cover to expose the zero and span potentiometers. Be certain to close the rotatable cover after adjustments are made. 4.
PAGE 5
4.2 Voltage Output Span Adjustment (Complete the zero adjustment before setting span.) Span or full scale output adjustments should only be performed using an accurate pressure standard (electronic manometer, digital pressure gauge, etc.), with at least comparable accuracy to the 227 transducer (±0.25% FS). With full scale pressure applied to the pressure port, the span may be adjusted by turning the span potentiometer screw.
PAGE 6
5.0 MODEL 227 PERFORMANCE SPECIFICATIONS Accuracy RSS* (at constant temperature.) ±1.0% Reading ±0.25% FS Non-Linearity, BFSL ±0.15% FS Hysteresis 0.20% FS Non-Repeatability 0.02% FS *RSS of Non-Linearity, Non-Repeatability and Hysteresis. Thermal Effects Compensated Range °F(°C) Zero Shift %FS/100°F (50°C) Span Shift %FS/100°F (50°C) Environmental Temperature Operating** °F(°C) Storage °F(°C) Current unit ordered with Option N1: Operating** °F (°C) Storage °F (°C) +15 to +150 (-9 to +65) ±2.0 (±1.8) ±2.
PAGE 7
SERVICE/REPAIR/CALIBRATION ORDER RETURN FORM Setra Systems, Inc. 159 Swanson road Boxborough, MA 01719 Repair Dept. Fax #: 978-266-2158/Phone #: 978-266-2194 ✮ All lines must be filled out. ✮ This form must accompany all returns. Returns that arrive with no information will be rejected. CONTACT NAME: COMPANY: PHONE NUMBER: EMAIL ADDRESS: DATE: FAX NUMBER: PURCHASE ORDER WITH “NOT TO EXCEED” AMOUNT MODEL / PART # AND QTY: CREDIT CARD #, EXP.
PAGE 8
7.0 WARRANTY AND LIMITATION OF LIABILITY SETRA warrants its Model 227 Transducer products to the original consumer purchaser against defects for a period of one year from the date of sale by SETRA, as shown in its shipping documents. Without charge, SETRA will repair or replace products found to have manufacturing defects within the warranty period. The serial number or date code must not have been removed, defaced or otherwise changed.