Manual

Humidistats
The J10 controls are
designed to regulate
the relative humidity of
confined spaces by
cycling humidifying or
dehumidifying
equipment. They are
designed for use as
internal components for
portable humidifiers
and dehumidifiers, and
as wall mounted
humidity controls for
central systems.
The J10 is a relative
humidity control,
consisting of a humidity
sensing element,
adjustable setpoint cam
and an electrical switch.
The sensing element
changes length in
response to the
exposed RH to move
the switch mechanisms
at the appropriate
switch points.
APPLICATIONS
- Dehumidifiers.
- Space and Product
Humidifiers.
- Ventilation fans for
confined spaces.
- Materials processing.
- Central HVAC units.
FEATURES
● Strong plastic frame with integral switch.
● Improved woven nylon sensing element
provides 12 times faster speed of response
than film nylon elements.
● Greater stability of setpoints over dramatic
changes in relative humidity.
● Improved differential allowing 5%RH.
● Switch grade plastic frame eliminates the
need for grounding the control.
● Choice of 5% or 15%RH differentials.
● Choice of (2) SPST and (2) SPDT switches
to better match applications.
● Choice of fixed or adjustable setpoints.
● Choice of dial shaft flat orientation.
● Gold-plated contacts available for
microprocessor load applications.
● Available with case and cover for wall/duct
mounting.
● Electronic controls available contact Ranco
Marketing.
Function of Terminals (when
present)
1 Close on %RH increase
2 Common.
3 Close on %RH decrease.
Switch/Frame Insulation Material
Thermoplastic, Flame Class 94V-0.
Comparative Tracking Index 600.
Approvals
The controls meet IEC 60730 - 1 & 2 -
13, UL 873 and CSA C22.2, No. 24.
Control Cycle Ratings
Automatic switch cycles @60° C 50000.
Manual dial shaft cycles 6000.
Ambient Temperature Limitations
Switch Head 0° C to 60° C.
Shipping -30° C to 65.6° C.
Enclosure Protection
IP00.
Electrical Shock Protection
Class 1.
Method of Attachment
Screw; Optional user defined snap-in.
SPECIFICATIONS
Humidity Ranges
10 to 60%RH.
20 to 80%RH.
30 to 90%RH.
Differentials
5%RH or 15%RH.
Switch
SPDT or SPST.
6.3 X 0.8 mm Terminals.