EMA-VM-KSch Remote alarm system

Monitors cable manholes: reacts if somebody opens the access cover,
breaks in, climbs through or reaches inside.

For monitoring 2 to ≥ 12 signal lines over distances up to 80 km
based on DIN VDE 0833-1, -3, -4.

Cable-manhole monitoring

Sensor Art. No. 49.01 EMA-VM remains activated as long as the access cover is opened.
After the cover is closed, the sensor is deactivated and on alert. This happens fully automatically.
Temperature resistance – 40 °C to + 70 °C

Various states, e.g. opening, entry, water levels, can be monitored simultaneously, by setting up the appropriate EMA-VM and GMA-VM remote alarm systems in series. If a GMA-VM is activated, it can be re-set to alert within 3 min, after the cause of triggering has been removed and the signal generator has been replaced (replacement material is required).
When several remote alarms are in use, the precise location of the alarm for water, heat/fire or unauthorised entry is made possible if a dead-zone box (with dead-zone fibres) is utilised.

No.	Designation	Art. No.
[1]	VM cable connection to a distribution module	49.01 EMA-VM- (Photo: 49.01 EMA-VM_02 for 2 sensors) *50.1 KSch-EUS** Signal generator
[2]	Protective sensor casing (shown hiere without lid: for max. 2 sensors [2a] or 1 sensor [2a] and 1 dead-zone box)
[2a]	EMA-VM sensor.

[2b]	Adjustable attachment ring (for attaching the push-pull signal transmitter [5].
[3]	Baseplate for the protective casing
[4]	Clamp Ø 10 mm for attaching the signal transmitter [5] and VM cable [1]
[5]	Push-pull signal transmitter (connected to the signal generator [6])
[6]	Signal generator