Measure AC active power up to 1250W at 50Hz with this sensor. Connects to an analog input.
This AC Active Power sensor measures AC power up to 7500W. Powered by an external 12VDC power supply, the AC Active Power Sensor provides a 0 to 5VDC analog signal that is linearly proportional to the power measured.
The AC Power Sensor can easily be mounted using the screw holes, or on a 35mm wide DIN rail for quick installation. The terminal blocks accommodate conductors of up to AWG #16. The window in the Sensor has a diameter of 6.5mm.
The current sensor connects to an analog input on Phidgets I/O boards. The formula to translate the SensorValue into Power is:
To determine the offset in your system, record the SensorValue when there is no power applied to the sensor. Use that value in the place of SensorOffset in the formula above.
|Sensor Type||Power (AC)|
|Sensor Output Type||Non-Ratiometric|
|Input Frequency||50 Hz|
|Input Current Min||0 A|
|Input Current Max||5 A|
|Input Voltage Min (AC)||0 V AC|
|Input Voltage Max (AC)||250 V AC|
|Input Power Min||0 W|
|Input Power Max||1.3 kW|
|Measurement Error Max||0.5 %|
|Sensor Response Time Max||500 ms|
|Supply Voltage Min||12 V DC|
|Supply Voltage Max||12 V DC|
|Current Consumption Max||25 mA|
|Output Voltage Min||0 V DC|
|Output Voltage Max||5 V DC|
|Isolation Voltage (AC)||1.5 kV AC|
|Isolation Voltage (DC)||2.5 kV DC|
|Recommended Wire Size||12 - 24 AWG|
|Wire Window Size||6.5 mm|
|Operating Temperature Min||0 °C|
|Operating Temperature Max||50 °C|
Warning: The AC Power Sensor needs to be attached in parallel with the line voltage. This requires cutting and using loose ends of high power cables. ALWAYS be sure to turn off the power running through the cables while manipulating and before cutting the cables. When attaching the cables, be sure to follow your country’s wiring code to ensure safe installment of the sensors and to reduce the risk of injury and fire. If you are uncomfortable, consult with a certified electrician.
Recommended Power Supplies
- 3024 – Power Supply 12VDC 2.0A (North American style plug)
- 3023 – Power Supply 12VDC 2.0A (European style plug)
- 3025 – Power Supply 12VDC 2.0A (UK style plug)
- 3022 – Power Supply 12VDC 2.0A (Australian style plug)
In order to use one of these power supplies with this sensor, you must cut the small plug from the end of the power supply and connect the wires directly into the sensor. You can also use a 3031 – Female Pigtail.
This sensor connects to any device with an Analog Input.
You can use the 1144 - 12V Sensor Adapter to connect the voltage sensor to an analog input as pictured below.
- Connect the +12V terminal on the 1144 to the voltage sensor terminal 5 (+12V).
- Connect the GND terminal on the 1144 to the voltage sensor terminal 6 (-).
- Connect the ANLG terminal on the 1144 to the voltage sensor terminal 8 (+).
Alternatively, you can use the 3002 - Sensor Cable 60cm or the 3004 - Sensor Cable 350cm to connect the AC Power Sensor to your Phidget. Just snip off the connector from one end of the sensor cable and connect the wires as described below. You can also use a 3031 – Female Pigtail if you don't want to cut the barrel jack off of the power supply.
- Connect the Power Supply +12V wire (the wire with the white line) to the voltage sensor terminal 5 (+12V).
- Connect the Power Supply Ground wire and the Analog Sensor Cable Black wire to the voltage sensor terminal 6 (-).
- Connect the sensor cable white wire to the voltage sensor terminal 8 (0-5V).
- Feed one of the AC main wires carrying current through the window of the sensor and connect it to the voltage sensor terminal 1 (UL).
- Connect the other AC main wire to the voltage sensor terminal 3 (UN).
For boards that have power input, such as the 1019 or the 1073, if the supplied power is 12V, then the + terminal block on the Phidget Board can be connected to the voltage sensor terminal 5 (+12V), and the G terminal block on the Phidget Board can be connected to the sensor terminal 6 (-).