The Series C51 Electro/Pneumatic Positioner is a direct, single acting force balance instrument and integrally mounted single converter having a characterized feedback suitable for use with spring or fixed air pressure return rotary actuators. The simple, single stage pilot, along with a unique feedback system, provides a versatile and reliable link with all types of actuators.
Rotations: 60 and 90 degrees
Rotation Indicator: shows amount of cam rotation
Standard Input Ranges: 4-20, 4-12, 12-20 milliamperes
Input Impedance: approx. 200 ohms
Capacitance: negligible
Temperature Limits: operating: -10F - 150F storage: -40f - 150F
Radio Frequency Interference: negligible
Gain: 170:1 with 35 psig supply pressure
Linearity: +-0.5% of full rotation
Air Comsumption: less than 0.15% SCFM at 9 psig output
Hysteresis: less than 0.3% of full span
Supply Pressure Effect: 0.15% of output span/psig supply pressure change
Full Flow Capacity: 4.5 SCFM with 35 psig supply pressure
Full Exhaust Capacity: 4.0 SCFM with 15 psig balance pressure
Supply Pressure: 20-150 psig (limited to the safe pressure of the actuator)
Housing: air purged/watertight/dusttight
PRESSURE GAUGES: for reading instrument signal, output pressure and supply pressure
BY-PASS VALVE: to isolate the positioner for servicing
INTERGRAL ELECTRIC LIMIT SWITCHES: to indicate upper and lower limits to travel
PIPED EXHAUST: 1/4" FPT
CHARACTERIZED CAMS: linear cam standard with equal percentage and quick opening cams available upon request