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Summary of Contents for Setra Systems 256
- Page 1 Installation Guide Model 256 Gage Pressure Transducer 9001 1-800-257-3872 Toll Free 1-978-264-0292 Fax www.setra.com Web Site Certified...
- Page 2 Setra offers a complete line of products for these industries: Industrial HVAC Test & Measurement Barometric Ultra High Purity/Sanitary...
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Page 3: Table Of Contents
4.2 Voltage Output Span Adjustment ..............7 4.3 Current Output Zero Adjustment ..............7 4.4 Current Output Span Adjustment ..............7 5.0 MODEL 256 PERFORMANCE SPECIFICATIONS ............7 6.0 RETURNING PRODUCTS FOR REPAIR ................. 8 7.0 WARRANTY AND LIMITATION OF LIABILITY ............8... -
Page 4: General Information
This may affect the overall accuracy, especially in ranges lower than 500 psig. The Model 256 provides a vent from the reference side of the sensor to the inside of the housing and the conduit ports. The user-provided electrical conduit must be vented to atmosphere in a clean dry location. -
Page 5: Mounting Accessories
3.1 Voltage Output Units The Model 256 is a 3-wire circuit. The -EXC and -OUT are commoned on the circuit. The 256 can operate from a 12 to 28 VDC excitation. The 256 has a 0.1- 5.1 VDC output. Excitation; connect to 12-28 VDC power supply Output;... -
Page 6: Current Output Units
We suggest that the electrical conduit shield be connected to the system’s loop circuit ground to improve electrical noise rejection. The Model 256 is a two-wire loop-powered 4 to 20mA current output unit and delivers rated current into any external load of 0-800 ohms. (See Diagram 2 for location of +EXC and -EXC current output screw terminals.) The current flows... -
Page 7: Voltage 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. -
Page 8: Returning Products For Repair
Notes: Please remove any pressure fittings 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.
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