1. Product Overview
YGM909 temperature, humidity and pressure display instrument is an integrated product based on analog signal input, with display and analog output functions. The product adopts stainless steel wiredrawing panel and snap fit installation. It can display three parameters of temperature, humidity and differential pressure at the same time, and has the sound and light alarm function. It can be installed on the wall together with the double 86 junction cassette.
2. Technical parameters
Differential pressure display range: - 999 ～ 9999 (display resolution 0.1) (Note: the range can be set by pressing the key within the display range)
Measurement accuracy: ± 0.2% FS
Power supply: 20~28VDC
Signal input: current input: 4~20mA, voltage input: 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: first, the three input signals must be consistent, either 4~20mA or 0~10V; second, the three signal inputs and outputs must be consistent)
485 output type: standard ModBus RTU
Response time: T90 ≤ 300ms
Enclosure protection grade: IP5X
Working temperature: - 20 ℃~+50 ℃
Storage environment: temperature - 20 ℃～+60 ℃, humidity 0 ～ 85% RH
3. Circuit connection

4.Installation dimension drawing

5.Model Selection Table