Industrial Controller
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Infinite Innovation, the Future of Industrial Control Systems
Infinite Innovation, the Future of Industrial Control Systems
PRODUCT POSITION:HOMEPRODUCT—CL6821
CL6821
Typical Technical Parameters Parameter Specification Model Type CL6821 Input Signal 4-20 mA DC (Two-wire) Output Pressure 3-15 psig (0.2 - 1.0 bar) - This is the most common range for this model. Supply Air Pressure 20 psig (1.4 bar) minimum, 35 psig (2.4 bar) maximum (for 3-15 psig output) Air Consumption Very low (Quiescent: < 0.2 SCFH) Accuracy Typically ±0.5% of span Linearity & Hysteresis Typically ±0.5% of span Enclosure Rating General Purpose (Not weatherproof). For harsh environments, a separate enclosure was often used. Ambient Temperature -20° to 180°F (-29° to 82°C) Weight Approximately 1.5 lbs (0.7 kg) Mounting 2-hole bracket or directly to a NAMUR pad on an actuator.
DESCRIBE
The Fisher Type CL6821 is an electric-to-pneumatic transducer (also commonly known as an I/P converter or I/P transducer). Its primary function is to accurately convert a standard analog electric current signal (4-20 mA DC) into a proportional pneumatic output pressure (typically 3-15 psig or other ranges). This device acts as a critical interface between electronic control systems and pneumatically operated equipment, such as control valve actuators, pneumatic cylinders, or dampers. It is known for its reliability, compact design, and robust performance in industrial environments.
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