Enmet SDS-97D Manual de usuario descargar pdf (Pagina 6)

SDS – 97D Sensor / Transmitter ENMET Corporation

2.2.2 Sensor/Transmitter with ISB

Installation with a recommended Intrinsic Safety Barrier properly connected and grounded renders the sensor/transmitter

nonincendive as defined by the National Electrical Code. An MTL 787S+ barrier is recommended connected as shown in

Figure C. Connections at the sensor/transmitter are shown in Table 2 as follows:

Table 2: Wiring at S/T

Position Function

J3-1 V+, the power supply

J3-2 signal, the positive side of the loop

J3-3 ground, the negative side of the loop

J3-4 shield, only if the sensor/transmitter enclosure is not grounded

Figure C: Wiring to ISB

When the sensor/transmitter is mounted and wired, assure that the cover gasket is in place, replace the cover, and secure it with

the two cover screws.

Allow the sensor/transmitter to stabilize for 3 to 24 hours.

1 V+

2 Signal

3 Ground

4 Shield, if necessary

SDS

–

97D

Sensor / Transmitter

24 V

Regulated

Power

Supply

Readout

4-20mA

Earth ground

Safe Area

Hazardous Area

ISB, MTL 787S+

–

1 2 3 4 5 6 7 8 9 10 11 12 13

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Enmet SDS-97D Manual de usuario Pagina 6