Setra 256 Installation Guide
6.0 RETURNING PRODUCTS FOR REPAIR
Please contact a Setra Systems application engineer (1-800-257-3872, 1-978-263-1400)
before returning unit for repair to review information relative to your application.
Many times only minor fi eld adjustments may be necessary. When returning a product
to Setra Systems, the material should be carefully packaged and shipped prepaid to:
Installation Guide
Model 256
Setra Systems, Inc.
159 Swanson Road
Boxborough, MA 01719-1304
Attn: Repair Department
To assure prompt handling, please supply the following information and include it
inside the package or returned material:
1. Name and phone number of person to contact.
2. Shipping and billing instructions.
3. Full description of the malfunction.
4. Identify any hazardous material used with product.
Notes: Please remove any pressure fi 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 Systems for the repair and return
of
the unit. Non-warranty repairs will not be made without customer approval and a
purchase order to cover repair charges.
Calibration Services
Setra maintains a complete calibration facility that is traceable to the National Institute
of Standards & Technology (NIST). If you would like to recalibrate or recertify your
Setra pressure transducers or transmitters, please call our Repair Department at 800257-3872 (978-263-1400) for scheduling.
7.0 WARRANTY AND LIMITATION OF LIABILITY
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 notifi ed in advance of and the product is returned to SETRA transportation prepaid.
Unless otherwise specifi ed in a manual or warranty card, or agreed to in writing and signed by a SETRA offi cer, 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.
Gage Pressure Transducer
SS2033 Rev.F 02/04/02
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Setra offers a complete line of
4.3 Current Output Zero Adjustment
While monitoring the current output, and with the pressure port open to
atmosphere or with zero pressure applied, the zero may be adjusted by turning
the zero potentiometer screw. The factory setting is 4mA (±.08mA).
4.4 Current Output Span Adjustment
Span or full scale output adjustments should only be performed by using an
accurate pressure standard (electronic manometer, digital pressure gage, etc.)
with at least comparable accuracy to the 256 transducer. With full range
pressure applied to the pressure port, the span may be adjusted by turning the
span potentiometer screw. The factory setting is 20mA (±.16mA).
products for these industries:
Industrial
HVAC
Test & Measurement
Barometric
Ultra High Purity/Sanitary
5.0 MODEL 256 PERFORMANCE SPECIFICATIONS
For Ranges For Ranges
25 PSI and Higher Less Than 25 PSI
Accuracy RSS* (at constant temperature.) ±.13% FS ±0.25% FS
Non-Linearity, BFSL ±0.1% FS ±0.22% FS
Hysteresis 0.08% FS 0.10% FS
Non-Repeatability 0.02% FS 0.05% FS
*RSS of Non-Linearity, Non-Repeatability and Hysteresis.
Thermal Effects
Compensated Range °F(°C) -4 to +176 (-20 to +80) -4 to +176 (-20 to +80)
Zero Shift %FS/100°F (50°C) ±1.0 (±0.9) ±2.0 (±1.8)
Span Shift %FS/100°F (50°C) ±1.5 (±1.4) ±1.5 (±1.3)
Warm-up Shift ±0.1% FS total ±0.1% FS total
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