HT-TD430 Humidity Transmittermeasures humidity with electrolysis method. Its sensor is an electrolytic cell. When the measured gas passes through the electrolytic cell, all the water vapor is absorbed by the phosphorus pentoxide - phosphoric acid membrane coating on the electrodes. When a direct current voltage is applied between the electrodes, the absorbed water is electrolyzed into hydrogen and oxygen, thereby generating a definite current. This current is proportional to the molecular weight of the absorbed water molecules. According to Faraday's law, the moisture content can be calculated. The sensor is placed in the measured environment and has the characteristics of fast response, high accuracy, and easy installation.
a. Compact and aesthetically pleasing in appearance, with a unique structural design;
b. High-resolution LCD display provides clear and beautiful visuals;
c. It could offer a cost-effective solution for the detection of trace moisture in high-end glove boxes;
d. Resistant to a small number of corrosive gases;
e. It has sensor over-limit protection and automatic recovery functions;
f. Menus are locked to prevent accidental changes to instrument parameters and affect its performance;
g. It is available for installation using KF40 flanges or threaded connections for in-situ measurement, or using a test chamber for ventilation measurement;
h. The circuit employs digital processing technology, isolation amplification, and band-pass design, featuring strong anti-interference capabilities;
i. RS485 bidirectional communication function enables direct communication with computers or other digital communication devices.
l Measurement Principle: Electrolyte
l Display Mode: LCD display with high resolution
l Measurement Range: 0~500ppmV H2O (range customizable)
l Measurement Accuracy:0~10ppm±3%FS,10~500ppm±5%FS
l Repeatability:±2% (when 10ppm)
l Stability:±2%FS/7d
l Resolution: 0.01PPm
l Response Time 63%: T63≤3min
l Output Port: 4-20mA (load resistance＜1KΩ)
l Communication Mode: RS485
l Power Supply: DC24V±10%, 0.2A
l Storage Environment Humidity: <90％RH, non-condensing (When the storage and transportation environment temperature is lower than 5℃, the transmitter should be placed in a normal working temperature environment for more than 4 hours before use.)
l Operation Environment Humidity: <100％RH, non-condensing
l Sample Mode: Free diffusion (other method is customizable)
l Sample Gas Temperature: -10℃~+50℃
l Coating Cycle: 6 months (The higher the concentration measured, the shorter the coating cycle.)
l Calibration Cycle: 1 year (recommended)
l Sensor Service Life: >24 months (under normal conditions of use)
l Gas Path Connection: NPT 1/8 internal thread for calibration cover
l Installation Method: KF40 flange installation
It is used in glove boxes, research and production of lithium-ion batteries, inert atmosphere welding, scientific laboratories, pharmaceuticals, nuclear industry, and chemical applications.
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