This document describes the features of SKU 1122 30 Amp Current Sensor AC/DC. It can measure up to 30 Amps of AC current and DC current between -30 and +30 Amps. It has a dual-output design that allows users to measure the AC and DC components of complex current waveforms separately. This sensor is ratiometric. It is designed to be used with products such as 1018, 1019, 1202, and 1203.
This manual describes the Phidgets 30 Amp Current Sensor that can measure up to 30 A AC and ±30 A DC. It explains how to connect the sensor to a Phidget InterfaceKit, configure the software, and interpret the sensor values for both AC (RMS) and DC measurements.
The document also provides detailed technical specifications, wiring connector part numbers, and guidance for achieving the highest measurement accuracy using the RawSensorValue attribute. This manual is written in Chinese.
| Active Current Consumption | 10 mA |
|---|---|
| Output Impedance | 1 kΩ |
| Maximum Measurable AC Current | 30 A |
| Maximum Measurable DC Current | 30 A |
| Maximum Measurable AC Frequency | 10 kHz |
| Current Conductor Resistance | 1.5 mΩ |
| Isolation (Current Loop to Sensor Output) | 2.1 kV RMS |
| Maximum Supply Voltage | 5 V DC |
| Minimum Supply Voltage | 4.5 V DC |
| Recommended Wire Size | 10‑26 AWG |
| Wire Stamping Length | 6‑7 mm |
| Total Output Error (Typical) | 1.5 % @ 25 °C |
| Total Output Error (Maximum) | 5 % (‑40 °C to +85 °C) |
Connect the sensor’s analog input cable to one of the analog inputs on a Phidget InterfaceKit, then use the DC current formula provided in the manual.
DC current (A) = (SensorValue / 13.2) − 37.8787.
Use the RawSensorValue attribute and replace the standard formula with (RawSensorValue / 4.095).