Relative humidity regulators - humidistats

photo of regulator HGS.65

Humidity regulator

Regulators are designed to control e.g. heating, ventilation, humidifier, dehumidifier, etc. When adjusted air humidity level is reached, relay contact for connected device control is switched over and signal LED is switched ON. It is possible to adjust the humidity level for control by means of a DIP switch inside of the plastic case. The step of adjustment is 1%RH. With the DIP switch it is also possible to adjust hysteresis to ±1%RH from the control level or ±2%RH from the control level. This is useful if higher protection of electronics against water (IP65) is required and the humidity control level is not readjusted often. When frequent adjustment of humidity control level is required, model with humidity selector on the case front side is recommended. Then very easy adjustment with 1%RH step is enabled and the adjusted humidity level is indicated on the selector. These models have "D" as a last letter of the model name and the protection of the case is IP40.
Regulators are available in wall-mount, duct-mount and bar types. Regulator contains a microprocessor based control circuitry in a durable watertight plastic case with connection terminals and a humidity sensor in a protection cover or in a bronze sintered filter.
Computerized design ensures maximum long term stability and temperature compensation of the humidity sensor.
State-of-the-art capacitive polymer sensor ensures excellent calibration long term stability, inertia against water and condensation. Humidistats are designed for use in non-aggressive environment.

APPLICATIONS - measuring and control of air relative humidity at:

TECHNICAL PARAMETERS
Relative humidity control range: 0 to 100%
Accuracy: ±2.5% relative humidity at the range of 5 to 95% at 23°C
Hysteresis: 1. range ±1% RH from control level
2. range ±2% RH from control level
(user selectable)
Operating temperature range of electronics: -30 to +80°C
Operating temperature range of the humidity sensor: -30 to +105°C
Range of temperature compensation of the humidity sensor: -30 to +105°C
Output contact parameters: Maximum switching power 720VA
Maximum switching voltage 250Vac, 125Vdc
Maximum switching current 6A
Power: 230V/50Hz, max. 0.35W
Warranty: two years

Regulators are available at the following types:

Regulators with adjustment of humidity level by means of a DIP switch inside of the case
Type Operating temperature range Length Note

HGS.65

Larger image
-30 to +80°C 67mm outdoor and indoor, protection rate IP65,
dimensions,
terminals

HGS.65-150

Larger image
-30 to +105°C* 150mm duct mount, protection rate IP65,
dimensions,
terminals

HGS.65-700

Larger image
-30 to +105°C* 700mm bar type, protection rate IP65,
dimensions,
terminals
Regulators with adjustment of humidity level by means of the selector on front panel
Type Operating temperature range Length Note Manual in pdf format

HGSD

Larger image
-30 to +80°C 67mm indoor,
dimensions,
terminals
Manual in pdf

* 105°C only at the end of measuring tip with the limitation accordingly to the Working range graph. Near plastic case with electronics and terminals maximum temperature is +80°C.

Working range of humidity sensor

Figure: Working range of humidity sensor

Included accessory:

Included is a gland for direct fixing of the bar and duct type regulators to a 29mm diameter hole.

OPTIONAL ACCESSORY
Larger photo F0000 spare sintered bronze sensor cover with thread for measuring of temperature and humidity of polluted air. Filtering ability of the cover is 0.025mm.
Larger photo F5100 plastic sensor cover with thread for measuring of temperature and humidity of clean indoor spaces.
Larger photo PP4 flat plastic circular flange for duct mounting
Larger photo PP90 right-angled stain-less steel flange for wall mounting