HGC 20 humidity generators

The HGC 20 humidity generators  allow for a reliable control of the relative humidity, in the range of 5% to 90%, inside small environmental measuring chambers from DataPhysics Instruments or other suppliers. With an integrated pump and desiccant reservoir they can independently generate a dry airflow using ambient air. Together with the heated water reservoir the necessary humidity can be generated within the HGC. Using the gas connection tube this air flow of well defined humidity can be fed into various environmental chambers or laboratory devices. The gas tube is heated in order to prevent any condensation during transfer. With the additional humidity and temperature sensor the system can measure directly at the target location and calculate the dew point inside of an environmental chamber.

Features of HGC 20 humidity generators

• Control and generation of relative humidity in the range of 5% to 90%
• Stand alone generation of dry air without an external pressurized gas supply
• Heated water reservoir
• Heated connection gas tube (transfer line) to thermal chamber to avoid condensation
• Flow rate: 600 ml/min with ambient air
• Easy control via touch-screen or software
• Serial RS 485 or USB interface
• Calculation of dew point in the measuring chamber
• Automated drying and regeneration of desiccant by a built-in heating system in two alternatively used desiccant reservoirs (total stored desiccant amount about 1.0 kg)

Technical Specifications

Relative humidity

• control range 5% … 90% @ 25 °C
• accuracy ± 1.8%

Temperature range

• 5 … 85 °C (requires appropriate temperature controlled chamber)

Dew point range min.

• -15 °C, max. 85 °C

Gas supply

• ambient air 

inlet for external gas supply (only for clean, oil free gases)

• ―

inlet pressure

• ―

flow rate

• 600 ml/min

Heated water reservoir

• 80 ml

Desiccant reservoirs

• two desiccant reservoirs (total stored desiccant amount about 1.0 kg), with auto–mated drying and regeneration of desiccant by a built-in heating system

Heated connection gas tube length

• 120 cm

Device control

• via integrated touch screen or software

Connection to controlling device

• RS-485 (for DataPhysics measuring system) or USB to PC (for third party systems)

Dimensions (L [mm] x W [mm] x H [mm])

• 330 x 280 x 350

Weight

• 19.5 kg

Power supply

• 80 … 275 VAC; 50 … 60 Hz; max. 250 W