? standard 483mm width 4U height of 19 inches cabinet standard chassis, complete sets of equipment, can also be used for the laboratory; 
 Acid resistance, corrosion-resistant sensors, anti-cross-interference, advanced digital processing technology; 
 ? Life span: more than 5 years; 
 ? measurement of the signal output of a linear expression; 
 ? a variety of status signal output: sound, light, picture, relays, communications and information; 
 ? Digital temperature compensation; 
 ? full Chinese menu operation (English version ordering instructions); 
 Applications 
 JNYQ-D-21 analytical instruments can be used for air separation, chemical fertilizer, chemical, medical, research and other areas. 
 Detection principle 
 Analytical instruments JNYQ-D-21 imported by Vaisala dew point sensor and the crystal principle sensor, fast response, high sensitivity. Easy to use operation. Measure trace moisture content in a variety of gas, to achieve strict control requirements of a variety of automatic quick online test on the moisture content. 
 The main technical parameters 
 ◆ Measurement Range: +20 ~ -80 ° C at +20 ~ -100 ° C; 
 ◆ Accuracy: ≤ ± 2% FS; 
 ◆ key indicators: Zero drift: ?2% FS/7d; 
 Span drift: ± 2% FS/7d; 
 Linearity error: ± 2% FS; 
 ◆ Signal output: (1) measuring the output 
 Large-screen liquid crystal blue, the direct reading of data, information-rich; 
 English in two versions (English version, ordering instructions); 
 The user-friendly menu operation, a simple and neat; 
 Isolated current: (0/4 ~ 20) mA (500Ω); 
 Isolation communication: RS232, RS485 (optional); 
 (2) state control output (isolated) 
 The upper and lower limits of passive electric shock (adjustable); 
 Communication Interface: RS232, RS485 (optional); 
 ◆ working environment: the supply voltage: 220VAC ± 10% 50Hz ± 5%; 
 Ambient temperature: (5 ~ 45) ° C; 
 Allow humidity: (0 ~ 85)% RH; 
 Power: 30W; 
 Weight: about 5.0kg;