Precision Constant Current DC Power Supply

Enthalpy Difference Room

Enthalpy Difference Room

Features

• The laboratory can measure and control the temperature and humidity of the laboratory working conditions, and can test the cooling capacity and heating capacity of air conditioners for household air conditioners such as split type, cabinet type, window type, inverter air conditioner, air duct machine, and heat pump water heaters. Measurement of supply air parameters, return air parameters and circulating air volume to detect the performance of the product under test.

• The operation of all equipment of the test system is controlled by programmable logic controller + man-machine interface, the interface is intuitive, the operation is convenient and reliable, the measured values are collected, processed and archived by the computer, the test report is automatically printed, and the test results and test data can be analyzed. 

• It has the advantages of wide adaptability, high degree of automation, easy operation, stable and fast working conditions, stable performance, high control precision, accurate acquisition, and low comprehensive noise.

Control System Description

• Using a set of independent software suitable for the WINDOWS operating system, the measurement parameters are automatically collected, calculated and displayed by the computer in real time.

• It can calibrate and correct sensors and measurement systems.

• The system has the functions of saving, querying, modifying and printing the measurement and correction coefficients of each sampling point and measuring system.

• It has the function of processing unsteady heating data. When the software performs low temperature capability test, the judgment conditions for low temperature heating can be selected as: four-way valve action, pressure difference, automatic power judgment and manual judgment in any interval. Manual judgment can be arbitrarily determined. Zone heating calculation.

Specification & Technical Data

Remark:

1. The temperature and humidity control accuracy of standard cooling room and standard heating room conditions is ±0.1℃, and other working conditionsare ±0.3℃.

2. During the cooling operation of the air conditioner, when there is no condensed water evaporation in the condenser, the outdoor wet bulb temperature onditions are not required.

3. The control accuracy is ±3.0°C during the transitional stage of switching on and off of the tested air conditioner or when the heating test air conditioner is defrosting.