Humidity and Temperature Sensor DVT-304

"REGMIK" enterprise manufactures humidity and temperature sensors DVT-304 with an analog sensitive element. In DVT-304 sensors, a Honeywell element is used as the sensitive element for humidity measurement. For temperature measurement, temperature sensors from the German company Heraeus are applied.

The DVTc-304 humidity sensor is used in systems for automated regulation and control of technological processes in industry, as well as in systems for managing and monitoring indoor microclimates, and drying chambers. The sensor’s protective cover is made of sintered stainless steel particles with fine porosity that does not oxidize.

As a result, the sensitive element is protected from fine dust particles and splashes falling from any direction. In case resin, sawdust, dirt etc. stick to the protective cover, it can be carefully removed and washed in a solvent. Before reinstalling, it must be thoroughly dried.

Humidity and temperature sensors are designed to convert the values of relative humidity of the gas environment and its temperature (except aggressive gases) into standard electrical signals:

• analog voltage (measured voltage value on the humidity sensor);
• I2C – digital sensors;
• 0-10 V voltage – for digital and analog sensors;
• 4-20 mA current – for digital and analog sensors;
• resistance (temperature values from sensors Pt100, Pt500 or Pt1000) – for analog sensors;
• RS-485 (ModBus RTU Protocol) – for digital sensors.

The application range of air humidity sensors is very wide and includes:

• maintaining the microclimate within specified limits in production equipped with humidity-sensitive electronic devices;
• humidity monitoring in office premises and households;
• in utilities sector – in boiler rooms and water treatment plants to prevent condensation;
• periodic monitoring to help avoid mold and mildew formation on building walls or storage facilities;
• control of technological processes;
• control of environmental parameters, etc.

The protective fitting material of the sensors is stainless steel grade 12Х18Н10Т. The DVT-304 humidity and temperature sensors do not allow condensation of moisture.

The multilayer construction of the HIH4xxx sensitive element ensures excellent resistance to most environmental hazards such as wetting, dust, dirt, oils, and common chemicals in the environment. The main characteristics of sensors based on Honeywell elements:

• molded thermoset plastic housing;
• nearly linear output voltage depending on relative humidity;
• interchangeability with laser trimming;
• low power consumption design;
• enhanced accuracy;
• fast response time;
• stable performance with low drift;
• chemical resistance.

The converter operates stably within the recommended measurement ranges of humidity and temperature. Prolonged exposure to conditions outside the normal range, especially at humidity > 80%, may temporarily increase measurement error. After returning to the normal range, performance will slowly return to factory parameters.

Particular care should be taken when using the converter in conditions of high humidity (> 98%) and near the dew point, because wetting of the sensitive element can cause irreversible failure.

Other modifications of humidity sensors are also produced, which can be found at this link...