What are the testing standards for air conditioner temperature rise current measurement and control recorder?

　　
The device uses a Siemens PLC as its controller, automatically collecting current data in real time. Based on the configured parameters, it automatically controls the external step-up and step-down motors to stabilize the current data. The device also records and saves the actual current data to a USB flash drive and can communicate with a host computer to upload real-time data. What are the testing standards for air conditioner temperature rise current measurement and control recorders? Guangzhou Zhipinhui Electronic Technology Co., Ltd. explains.

1. Input Current: 3 channels

0.3A to 6A per channel

Internal load resistance: ≤0.2Ω, temperature coefficient ≤100 PPM

2. Input range: 4 manually selectable ranges

Current transformers require external user configuration

100A range: 10A-180A

10kA range: 0.15kA-1.8kA

10kA range: 1.5kA-18kA

100kA range: 10kA-180kA

3. Current measurement: Digital display, accuracy 1% + 2 digits

True RMS measurement

Internal measurement linearity ≤1%

Excluding external current transformer nonlinearity

Calibration coefficients can be entered for each channel and range

4. Measurement and Control Interface: Touchscreen Operation

Output Control: 3 Channels

A. Two long-life solid-state relay ports (both ramp-up and ramp-down) per channel for faster control and longer life

B. Load capacity of the ramp-down and ramp-down output solid-state relays: AC480V 10A

C. User External Connections: Overload and short-circuit protection, motor limit switches

D. Control Cycle: 1 second

E. Start and Stop Buttons: Control test start and stop

F. Test Time: 0.01 to 99.99 hours, automatically stops upon expiration