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Humidity&Oxygen Measuring Instrument
The humidity and oxygen measuring instrument uses an ion flow humidity sensor to measure the moisture content in the sample gas. It is centered around
Product details
sensor |
Ion flow humidity sensor |
range |
H2O：0～40% O2：0～25% |
accuracy |
H2O：±2%FS O2：±3%FS |
repeatability |
H2O：±1%FS O2：±1.5%FS |
stability |
H2O：±1%FS/7d O2：±1.5%FS/7d |
response time |
T90<30 seconds (after sufficient preheating) |
Sensor lifespan |
More than 2 years (normal use) |
Transmitter lifespan |
More than 5 years (normal use) |
power supply |
24VDC，3A |
Transmitter power |
Less than 40VA |
ambient temperature |
Transmitter:- 10～+50℃ Probe: 0-180 ℃ (excluding probe cable) |
Transmitter environmental humidity |
＜90%RH |
Sample gas pressure |
Normal pressure ± 10% (outlet should be at atmospheric pressure) |
Sample gas flow rate |
1～1.5L/min |
analog signal |
Two groups (corresponding to humidity and oxygen concentration respectively) Output mode: 4-20mA/0-20mA, supports software switching |
communication |
Two sets of digital communication Communication method: The first group is RS485, and the second group is RS485 (standard)/RS232 (optional) Communication interface: The first group is the wiring terminal, and the second group is DB9 |
● Can be used for humidity measurement in high-temperature environments;
The probe has a heat tracing function to avoid condensation of water vapor in the probe, which may affect the testing accuracy;
The circuit adopts digital processing technology, isolation amplification, and truncation design, and has strong anti-interference ability;
Adopting RS485/232 bidirectional communication function;
The analog signal can be set to 4-20mA/0-20mA analog output mode.
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