Products for USB Sensing and Control
Products for USB Sensing and Control

CE-IZ02-32MS1-0.5 DC Current Sensor 0-100mA

ID: 3512_0

This sensor measures up to 100mA DC and connects to a Voltage Input.


This DC Current sensor measures DC current, up to 100mA. Powered by an external 12VDC power supply, the DC Current Sensor provides a 0 to 5VDC analog signal that is linearly proportional to the current measured at the terminal blocks.

The DC Current 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.

In order to measure the current, the sensor has an internal 5 Ohm resistor. This will result in a slight voltage drop before the voltage gets to the device requiring the power. Consequently, the “leftover” voltage might not be high enough to power the device, especially if the power supply has a voltage close to the device’s minimum voltage requirements. As a point of comparison, using a 12V battery running a 160 Ohm Load, there is an approximate drop of 0.375V due to the 5 Ohm sensing resistor on the 100mA DC Current Sensor. The maximum voltage drop is 0.5V, when the sensor is measuring 100mA.

The output of this sensor is not clamped at 5V. If the current being measured exceeds the rated input current, more than 5V will appear at the output signal. This can damage the Phidget Board (or any other ADC) that it is attached to if the output signal exceeds 5V for an extended period of time.

The current sensor connects to an analog input on Phidgets I/O boards. The formula to translate the SensorValue into Current is:

I(mA) = SensorValue * 0.1

Product Specifications

Sensor Properties
Sensor Type Current (DC In-Line)
Sensor Output Type Non-Ratiometric
Input Current Min 0 A
Input Current Max 100 mA
Measurement Error Max 0.5 %
Sensor Response Time Max 15 ms
Electrical Properties
Supply Voltage Min 12 V DC
Supply Voltage Max 12 V DC
Current Consumption Max 16.7 mA
Output Voltage Min 0 V DC
Output Voltage Max 5 V DC
Isolation Voltage (DC) 2.5 kV DC
Isolation Voltage (AC) 1.5 kV AC
Physical Properties
Material Plastic
Recommended Wire Size 12 - 24 AWG
Operating Temperature Min 0 °C
Operating Temperature Max 50 °C
Customs Information
Canadian HS Export Code 9030.33.00
American HTS Import Code 9030.33.38.00
Country of Origin CN (China)

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 - Phidget Cable 60cm or the 3004 - Phidget Cable 350cm to connect the DC Current Sensor to your Phidget. Just snip off the connector from one end of the Phidget 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 Current Sensor terminal 5 (+12V).
  • Connect the Power supply Ground wire and the Phidget Cable Black wire to the Current Sensor terminal 6 (-).
  • Connect the Phidget cable white wire to the Current Sensor terminal 8 (+).
  • Connect the positive wire of the device’s power supply to the Current Sensor terminal marked 1 (IN+).
  • Connect a wire from the input voltage of the device under test to the Current Sensor terminal 3 (IN-).
Connecting Connecting

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 (-).

Recommended Power Supplies

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.