Enmet ISA-M Manual de usuario Pagina 8
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ENMET Corporation ISA – M
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4.3 Sensor Hook-up
The MOS sensor is connected to the ISA-M control unit with three conductor wiring, use the correct oiltight fitting.
Two conductors supply heater current to the sensor. The third conductor is a signal wire. Size of heater wire depends
on the distance between the particular sensor and the control unit. See Table 4.
Sensor wires correspond to the normal wire code:
orange – heater
brown – heater ground
blue – signal
Figure 4: Internal View of Sensor Wiring
NOTE: The three color-coded wiring attachments must be performed by the user when replacing the sensor.
Table 4: Recommended Wire Gauge
Distance from Sensor to Control Unit Recommended Wire Gauge
250 feet 16 AWG
350 feet 14 AWG
Longer Distances Contact Factory
CAUTION: After you mount and install the ISA – M, you must adjust the sensor heater voltage (see section 4.4).
Sensor Wiring
FOR 812 / 813 / 814 SENSORS
Position Function Wire Color
1 Signal (Blue)
2 Heater (Orange)
3 Ground (Brown)
Optional
Splash Shield
Sensor Wiring
Terminal
- ISA – MISA – M 1
- OPERATION & MAINTENANCE 1
- Table of Contents 2
- List of Figures and Tables 2
- OPERATE – Normal Operation 4
- OTE: N.C.= normally closed 5
- 4.2 Sensor Location 7
- Table 1: Heavier than Air 7
- Table 2: Lighter than Air 7
- Table 3: Same Density as Air 7
- 4.3 Sensor Hook-up 8
- 4.4 Sensor Heater Voltage 9
- 5.0 Operation5.0 Operation 10
- 6.1 Test 11
- 6.2 To Recalibrate 12
- 4.1 Basic Troubleshooting 13
- 7.2 Sensor Replacement 13
- 8.1 Options and Variations 14
- 7.3 Replacement Part Numbers 14
- Description Part Number 14
- 9.0 WARRANTY9.0 WARRANTY 15
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