Remote Sensors - City Power Monitor

Know when city power fails and your gear is running on the UPS.

City Power Monitor

The City Power Monitor (CPM) contains a wall transformer and a voltage converter. It plugs into a standard 15 or 20 amp wall receptacle. Up to three can be attached to a WeatherGoose or a SuperGoose.

When the city power fails, the UPS takes over running the equipment. The time for operation can be minutes or hours before the battery is exhausted.

Add to this, the air conditioning in the room is probably inoperative and your gear is getting hot.

Up to three CPM units can be used.

The standard WeatherGoose graphing functions are used which will show if city power has been interrupted.

Specifications

Input Range: 100 to 240 VAC
Output: 0 to 5 VDC
Current draw: <20 mA
Cable Length and Size: 36", 22AWG solid
Attachment: I/O port (C123C)
Enclosure: black plastic wall transformer
Dimensions: 3" L x 2.25" H x 0.5" W
Response time: 10 seconds plus Internet data communication time

Connections

GREEN: WeatherGoose analog I/O terminal block, “C” terminal (ground)

RED: WeatherGoose analog I/O terminal block, analog input “1”, “2”, or “3”

The CPM must be connected directly to a receptacle supplying city power and not to the UPS power. Graphs will show loss of city power.

Wiring is simple: the CPM converts the line voltage into a 5VDC signal. When the power fails, the voltage goes to zero and an alarm can be generated. Wiring lengths over 100’ can be used.