IM250 Mass Flow Controller Pin-outs

For 4-20 mA (Code G)
Pin Description
1 Command Return
2 No Connection
3 No Connection
4 Flow Output Current (4-20 mA)
5 + 15 to +28 VDC Supply Power
6 No Connection
7 Flow Set Point Current (4-20 mA)
8 No Connection
9 Power Supply Common
10 Flow Output Current Return (4-20 mA)
11 No Connection
12 Valve Open/Close: Apply +5 to+15 VDC to Open; Pull to ground or apply -5 to -15 VDC to Close.
No connect for normal operation.
13 No Connection
14 Chassis Ground
15 No Connection
15-pin Analog (Code B)
Pin Description
1 Valve Test Point
2 Flow Signal Output, (0 to +5 VDC)
3 Valve Close (Pull to Ground or Pull Low - 5 to -15 VDC)
4 Valve Open (Pull High +5 to +15 VDC)
5 Power Supply Common Digital Ground
6 No Connection
7 +11 to +25 VDC
8 Set Point Input (0 to +5 VDC)
9 Zero Function (Pull to Ground)
10 Optional Input
11 Signal Common
12 Signal Common
13 No Connection
14 No Connection or Pressure Out (where available)
15 Chassis Ground

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