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Model 14 Positive & Negative Bias Relay
Model 14 Positive & Negative Bias Relay
Brand: Fairchild Industrial Products
Designed for applications that require an output pressure that is the sum of a controlled input signal plus or minus a fixed bias, Rotork Fairchild's Model 14 Biasing Pneumatic Relay provides versatility in its ability to provide either positive or negative biasing in a single unit.
The output of the Model 14 relay is the sum of the spring bias, set with the Range Screw, plus a pneumatic input signal. (Po = Ps + K); where Po is output pressure, Ps is signal pressure, and K is the combined spring constant.
FeaturesSpecifications
Pressure Range
- bar: -1.2 to 0.7
- kPa: -120 to 700
- psig: -18 to 100
Environmental Protection
- Acceptable for use in Zones 1 & 2 for Gas Atmosphere, Groups IIA & IIB & Zones 21 & 22 for Dust Atmospheres
Vent
- Straight
- Tapped Exhaust
Relief
- Non-Relieving
- Relieving
Trim Material
- Brass
- Stainless Steel
- Zinc-Plated Steel
Sensitivity
Enclosure, Body Material
Elastomers
Signal or Output Pressure - Maximum
Ambient Temperature Range
NPT Connection
Mounting
Supply Pressure Effect
Exhaust Capacity - Relieving Units Only
BSP Connection
Flow Capacity
Actuator Type
Supply Pressure - Maximum
Documentation
Data Sheets
- Fairchild Model 14 Positive & Negative Bias Relay Data Sheet pdf 248 KB
Product Manuals
- Fairchild Model 3400 Pneumatic Regulator Product Manual pdf 471 KB
Catalogs
- Catalog - Fairchild Product Line pdf 37.9 MB
Certifications & Approvals
- Certifications & Approvals - Fairchild CRN Approvals 2010 pdf 10 KB
Installation Instructions
- Fairchild 14 Positive and Negative Bias Relay IOM Instructions pdf 487 KB
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