KH-10 KH-20 Duct hygrostats - Domat International
KH-10 KH-20 Duct hygrostats - Domat International
KH-10 KH-20 Duct hygrostats - Domat International
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<strong>KH</strong>-<strong>10</strong><br />
<strong>KH</strong>-<strong>20</strong><br />
<strong>Duct</strong> <strong>hygrostats</strong><br />
Summary<br />
Mechanical air duct <strong>hygrostats</strong> for monitoring, control and limitation of<br />
relative humidity in HVAC units – air ducts, air handling units, greenhouses<br />
etc.<br />
Applications<br />
<br />
HVAC control systems – humidity limitation, humidity control etc.<br />
Function<br />
Change of relative humidity above the preset value actuates a potential-free contact<br />
which is brought to the output terminals. The setpoint value is set by a knob outside<br />
of the housing. The „-U“ types provide internal setpoint knob. The device is purely<br />
mechanical and needs no external power supply.<br />
Technical data<br />
Contact load<br />
Contact<br />
Cover<br />
Ambient temperature<br />
Dimensions of the housing<br />
Pocket length<br />
Protection degree<br />
15 (8) A, 24...250 V AC, min. 150 mA<br />
dustproof contact block, single potentialfree<br />
switching contact<br />
Polyamide reinforced with glass fibre<br />
(30 %), white colour<br />
-<strong>10</strong>...65°C<br />
<strong>10</strong>8 x 72.5 x 70 mm<br />
<strong>20</strong>0 mm<br />
IP65<br />
Electrical terminals screw terminals, for wires 0.14 .. 1.5 mm 2<br />
Hysteresis<br />
Setpoint range<br />
Max. air velocity<br />
4 % rH<br />
35 ... <strong>10</strong>0 % rH<br />
8 m/s<br />
domat <strong>KH</strong> 1
Types<br />
Hygrostats are delivered in following variants:<br />
Type<br />
Range<br />
(% rH)<br />
Difference<br />
between the<br />
stages<br />
(% rH)<br />
Stages<br />
Setpoint<br />
<strong>KH</strong>-<strong>10</strong> 35 ... <strong>10</strong>0 - 1 External<br />
<strong>KH</strong>-<strong>10</strong>U 35 ... <strong>10</strong>0 - 1 Internal<br />
<strong>KH</strong>-<strong>20</strong> 35 ... <strong>10</strong>0 3 ... 18 2 External<br />
<strong>KH</strong>-<strong>20</strong>U 35 ... <strong>10</strong>0 3 ... 18 2 Internal<br />
Terminals<br />
Terminal connection:<br />
1 – 4 : humidification<br />
1 – 2 : dehumidification<br />
FX: measured relative humidity<br />
FW: set relative humidity (setpoint) on the knob<br />
DX: difference between stage 1 and stage 2<br />
Internal settings<br />
The ..U types have the setpoint knob inside of the housing to prevent unauthorised<br />
operation.<br />
2 domat <strong>KH</strong>
Dimensions<br />
05/<strong>20</strong>09 Subject to technical changes.<br />
domat <strong>KH</strong><br />
3
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