BMT 932 - Electrical Installation; Power Connections; Output and Control Terminals

OZONE MONITOR BMT 932 Manual, Rev. 02/2021
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thus demonstrate that the sample gas is dry enough. The WATER TRAP then should be re-
moved. If condensate will be observed in the WATER TRAP the value of the TRAP now was
twofold: it has shown the neccessity of drying the sample gas, and it has held back the condensate
and thus has protected the OZONE MONITOR BMT 932. If the sample gas would need drying
please refer to our Peltier-electric Sample Gas Dryers DH3b-LC and DH5-LC.
11 Electrical Installation
11.1 Power Connections
The rear panel of the 19" rack mount version of the OZONE MONITOR BMT 932 includes a
3-wire power receptacle. The instrument will work from any mains voltage in the range of
100 to 240 VAC. Power consumption is less than 35 VA. The instrument contains Universal
Modular Fuses, which allow global operation without having to make a decision between IEC
and UL type fuses. Fuses cannot be replaced by the user. The wall mount cabinet version
BMT 932C has a special water-proof mains receptacle on the right side. The according special
water-proof connector comes with the instrument.
Warning: This product relies on the building's installation for short-circuit (overcurrent) protec-
tion. Ensure that a fuse or circuit breaker no larger than 15 A at 120 VAC (10 A at 240 VAC) is
used on the phase conductor.
The power receptacle or the mains socket-outlet the instrument is connected to should be easily
accessible for fast interruption of power, or other means for switching off power should be pro-
vided.
Warning: If the mains cable is replaced, the new cable shall have a current rating of at least 10 A.
The BMT OZONE MONITOR 932 with (optional) power 24 VDC (18-36 VDC) has a three
pole terminal block for connection of the power supply:
1
Protective Ground
DC power connector: 2 Positive
} (18-36 VDC, 25 W SELV-supply)
3 Negative
11.2 Output and Control Terminals
The following signals are available at the green terminal block named "SIGNALS” on the rear
panel of the OZONE MONITOR BMT 932:
Signal Name Pin No. Description
Alarm Low Common 1 Relay contact
Alarm Low Closed 2 Pins 1-2 closed when LOW alarm
Alarm Low Open 3 Pins 1-3 opened when LOW alarm
Alarm High Common 4 Relay contact
Alarm High Closed 5 Pins 4-5 closed when HIGH alarm