GE Masoneilan 4700E, Maintenance Manual

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Masoneilan 4700P/E & 4800P/E Positioners Manual =
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Specification Data
Table 7: Specification Data
Item Description
Type Cam feedback, pneumatic, force balanced; electropneumatic positioner
uses current to pneumatic converter to generate pneumatic operating sig-
nal
Action Direct: increasing signal increases output reverse: increasing signal
decreases output
Note : Reverse action is available only on the 4700P/4800P Pneumatic
Positioner
Characteristics
Linear
Equal Percentage
Custom
Maximum Air
Consumption
0.3 scf/min - 25 psig supply (4700)
0.5 scf/min - 25 psig supply (4800)
Temperature Effects
Span Error (Typical) Temp Range (°C)
-40 to -20
-20 to +60
+60 to +85 Error
.31% per °C
.06% per °C
.11% per °C
Supply Pressure
Influence Less than 0.25% stroke change per psi supply change
Maximum Air
Supply Rating
Dictated by actuator, but never greater than 100 psig
Connections
Pneumatic: 1/4" NPT (4700) or 3/8" (4800)
Electrical: 1/2" NPT or M20
Weight
4700P: 3.5 lbs (1.6 kg); 4800P: 4.2 lbs (1.9 kg)
4700E: 4.7 lbs (2.1 kg); 4800E: 5.3 lbs (2.4 kg)
Specifications