ENMET AM-5150 - Manual (Page 8)

AM-5150 ENMET Corporation
6
3.2.1 Sensor Hook-up
The MOS sensor is connected to the AM-5150 control unit with four-conductor wiring, use the correct oil tight fitting. Two
conductors supply heater voltage and heater ground for the sensor. The third and fourth conductors are signal and signal
ground wires. Size of the wire depends on the distance between the particular sensor and the control unit.
Recommended Wire Gauge
Sensor Type Distance from Sensor to Control Unit Recommended Wire Gauge
High Voltage:
812, 813, 826, etc.
≤ 500 feet
16 AWG
501 – 800 feet 14 AWG
Longer Distances Contact ENMET Corp
Low Voltage: 109
≤ 50 feet
16 AWG
Longer Distances Contact ENMET Corp
Wiring for 4-wire Terminal Sensors
Position Function Wire Color
1 Heater Orange
2 Signal Blue
3 Heater Ground Brown
4 Signal Ground Yellow
Wiring for 3-wire Terminal Sensors
Position Function Wire Color
1 Heater Orange
2 Signal Blue
3 Heater Ground Brown
Wire Nut Signal Ground Yellow
N OTE : The yellow signal wire is not connected to the
terminal block, use supplied wire nut.
Figure 5: Internal View of Sensor Wiring
Wire length between the AM-5150 and the sensor greater then 100ft will require that the sensor heater voltage be reset. After
you mount and install the AM-5150 and Sensor, you must verify the sensor heater voltage. Use position 2 and 3 to measure
heater voltage.
Locate the sensor heater voltage table label inside the instrument, see Figure 4. Measure the sensor heater voltage at the
sensor, see Figure 5 and adjust the heater adjustment
POT 4 until required voltage is reached, see Figure 4.
Optional
Splash Shield
Sensor Wiring Terminal*
The 4
th (yellow) wire is not
connected to the terminal
block, use supplied wire nut
Optional
Splash Shield