1. Product Overview
YGM409 Temperature and Humidity Display Instrument for Clean Room is a product that can display temperature and humidity values to meet the operating conditions of the clean room. The product adopts stainless steel wiredrawing panel, which is installed in a snap type, and has an audible and visual alarm function. It can be installed on the wall with a double 86 type cassette. The product can display any two parameters of temperature, humidity and dew point at the same time.
2. Technical parameters
Display range: - 9999~9999 (display resolution 0.1 ℃; the range can be set by pressing the key within the display range)
Measurement accuracy: ± 0.2% FS
Signal input: current input type: 4 ～ 20mA, voltage input type: 0 ～ 10V
Signal output: current output type: 4 ～ 20mA (three wire system); Electrical load ≤ 500 Ω
Voltage output type: 0 ～ 10V (three wire system) electrical load ≥ 10K Ω (Note: when selecting the model, please note that: first, the two input signals should be consistent. Either they are 4 ～ 20mA or both are 0 ～ 10V; second, the two signal inputs and outputs must be consistent. For example, if the two signal inputs are 4 ～ 20mA, the output must also be 4 ～ 20mA)
485 output type: standard ModBus RTU
Power supply: 20~28VDC
Response time: T90 ≤ 10ms
Enclosure protection grade: IP5X
Working temperature: - 20~+50 ℃
Storage environment: temperature: - 20~+60 ℃, humidity: 0~85% RH
3. Circuit connection

5.Model Selection Table