Install current sensors

A current sensor consists of a transmitter module with three (or one if you use a single-phase sensor) separate clamps. The sensor relies on 'energy harvesting' from the power cables of the machines and thus does not need an external power supply.

The transmitter module sends the measurement data to the bridge. To be able to interpret the data correctly in the dashboard, it is important that you connect the correct sensors to the designated machines on the inventory list. You can identify the sensors using the 8-digit sensor ID.

Installation steps

1. Take a sensor (transmitter module + 3 clamps) and read the sensor-ID. Find the sensor ID on the inventory list and go to the power cables of the corresponding machine.

2. Check that the metal parts of the clamp are free of dust and dirt. If this is not the case, wipe them clean with a cleaning cloth.

3. Click a clamp around every phase of the power cable and make sure that they are securely fastened by checking the snap closures; this prevents discharge vibrations. If the clamp does not fit around the cable properly, please contact our support.                                         

4. Should a machine be powered through more phases than can be measured, it is sufficient to only attach the clamps where possible. In this case, it is very important to inform our support department of the number of power cables in total and the number of power cables with clamps, so that the data is processed in the appropriate way.


5. Click the RJ11 plugs (i.e. telephone sockets) of the clamps into the transmitter model. The order in which these are connected is not important.

6. After installation, check that the sensor is working properly by checking the LED light. If the transmitter light flashes every 10 seconds, the sensor is working properly.

7. Note: if the machine is not switched on or disconnected from the power supply, the LED light will not flash. The intensity of the LED light is low, this can be difficult to see.

8. If possible, mount the transmitter outside the distribution cabinet. Metal and concrete obstacles can significantly reduce the range of the wireless transmitter. If this is not possible, make sure that a bridge is placed close to the cabinet. Mounting can be done with double sided tape, screws, bolts or tie wraps.

9. To ensure that a decent connection between the bridge and a sensor is established, use the installation overview. This functionality is described in chapter 2.

10. Congratulations! The sensor is now installed, repeat the above steps for all other sensors in the box.

If the data in the software seems incorrect, it’s likely the software settings don’t fully correspond with the actual voltage and power factor of the power supply. In the ‘Analysis’ tab, click the ‘i’ button next to a machine name to check these values.

Sensorfact can change these settings.


Product Specifications

Product name: ACS-ENOC-868
Indoor use only
Altitude up to 4000 m
Temperature range 0 to 60 °C
Relative humidity 10-90%, non condensing
Ingress protection IP4X
Frequency Band M (868.300 MHz)
Max. transmitting power TCM 515 using a whip antenna +10.8dBm


Connection to the Sensorfact Gateway is set up automatically as soon as sufficient energy is available to the sensor. No manual actions are necessary.

If the product is used in a way that deviates from these instructions, its safety features may become compromised, which could result in harm or damage. It is important to always follow the manufacturer's instructions and guidelines for safe and proper use of the product.

Hereby, Sensorfact B.V. declares that the radio equipment type ACS-ENOC-868 is in compliance with Directive 2014/53/EU and Radio Equipment Regulations 2017.

The full text of the EU declaration of conformity is available at the following link: click here. UK Declaration of Conformity can be found here.

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