HBC: Humidistats for duct mounting
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HBC: Humidistats for duct mounting - 1

24.022/1 HBC: Humidistats for duct mounting How energy efficiency is improved Enables switching of equipment as required for humidity regulation. Areas of application Monitoring and controlling relative air humidity by controlling fans, drying units and air humidifiers. For incorporation into ventilation duct or wall mounting. Features • Temperature-compensated humidity sensor • Variable relative humidity as setpoint based on printed scale in % rh • Housing lid made of thermoplastic, lead-sealable • Housing and sensor tube made of thermoplastic reinforced with glass fibre • HBC 112 offers the option of 3-point control or min./max. monitoring • Fitting bracket with seal for duct and wall mounting Technical description • With single-pole change-over contacts and fixed switching difference XSd • Underside of housing with 30 mm ø sensor tube made of thermoplastic reinforced with glass fibre • HBC 112 for 3-point control or min. and max. monitoring and internally adjustable switching range XSh • Screw terminals for wires of up to 1.5 mm² • Cable inlet for Pg 11 • Switching capacity: up to 5 A Switching range XSh % rh Contact rating: maximum minimum Temperature influence Long-term stability Setting accuracy Humidity calibration at Permissible ambient temp. without dew formation Degree of protection Protection class Wiring diagram Time constant (v = 0.2 m/s) Permissible air speed Dimension drawing Fittings instructions Operating instructions Set for increasing the degree of protection to IP 55 (housing cover incl. transparent cap for setpoint knob; seal; one Pg 11 cable screw fitting; one Pg 11 plug) One Pg 11 cable screw fitting Operation HBC 111 (one micro-switch) When the relative humidity rises above the setpoint XS, the contacts switch over from 1-2 to 1-3. The contacts revert to their original position when the humidity has fallen by the amount of the fixed switching difference (XSd). HBC 112 (two micro-switches) When the relative humidity rises, the first switch switches over from 1-2 to 1-3. When the setpoint XS has been reached, the second switch switches over from 1-5 to 1-6. When the relative humidity falls by the switching range XSh, the first switch changes back to 1-2. The switching range XSh can be set internally with a screwdriver. Rapid changes in humidity also cause the switching point to be temporarily shifted. Engineering and installation notes Fitting position: sensor tube can be anywhere between horizontal and vertical (facing downwards). The sealing set (accessory 0303538) increases the degree of protection to IP 55.

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HBC: Humidistats for duct mounting - 2

24.022/2 HBC Additional technical data CE conformity as per Low-Voltage Directive 2006/95/EC EMC Directive 2004/108/EC Printed in Switzerland Right of amendment reserved N.B.: A comma between cardinal numbers denotes a decimal point © Fr. Sauter AG, CH-4016 Basle 7124022003 05 Sauter Componen

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