Johnson Controls Humidity Sensors
Johnson Controls Humidity Control Module
The W351 Humidity Controller is an automatic reset electronic humidity control with an SPDT relay output and LED indication. Features field adjustable humidification/dehumidification mode, differential and setpoint. Can be surface or DIN-rail mounted.
- computer rooms
- clean room
- pharmaceutical manufacturing process
- space humidity
- humidity monitoring and display
- high/low humidity alarm indication
Johnson Controls Humidity Staging Module
The S351 Humidity Stage Module is used in conjunction with the W351 Humidity Control to add multiple staging capability. Up to five S351’s can be added to the W351 via the 5-pin plug-in connector.
multiple staging for humidification/dehumidification of clean rooms, computer rooms, or space humidity control
Johnson Controls Humidity Display Module
The S351 Humidity Stage Module is used in conjunction with the W351 Humidity Control to add multiple staging capability. Up to five S351’s can be added to the W351 via the 5-pin plug-in connector. Optional cables allow for remote display.
Johnson Controls Humidity Sensors for W351
These Humidity Transmitters are used in conjunction with the W351 Humidity Control to provide on/off action for humidification and/or dehumidification equipment.
Johnson Controls TrueRH® Controllers
This new series of controller provides proportional humidity control. They are available in wall or duct mount versions. The patented All-Polymer‰ construction of the humidity sensor provides improved resistance to chemical corrosion. The output is jumper-selectable (RA or DA) and has an adjustable set point and proportional band.
• TrueRH‚ circuitry and calibration techniques
• All-Polymer humidity sensor
• Jumper-selectable RA or DA and 0-10 or
• 6-9Vdc output
Power Supply: 14-30Vdc at 10mA or 30Vac
Control Action: Jumper-selectable, RA or DA (factory set for RA)
Output Range: Jumper-selectable, 0-10Vdc (factory set) or 6-9Vdc
Sensing Range: 0 to 100% RH, non-condensing
Set Point: Adjustable from 20-80% RH
Proportional Band: Adjustable from 2-20% RH
Operating Temperature: 32-122˚F
Johnson Controls TrueRH® Transmitters
These new transmitters utilize the same sensing technologies as the TrueRH‚ Controllers above. They are available in wall or duct mount versions, and have a typical output signal of 4-20 mA or 0-10 Vdc corresponding to 0-100% RH. Depending upon your need they are capable of measuring RH within either +2% or +3% accuracy.
- TrueRH‚ circuitry and calibration techniques
- All-Polymer humidity sensor
- Jumper-selectable 0-10 Vdc or
- 4-20 mA output
0-10 Vdc output
20-30 Vac, 50/60 Hz at 15 mA or
14-30 Vdc at 6 mA, Class 2
4-20 mA output
16-30 Vdc at 20 mA, Class 2
Jumper-selectable, 0-10 Vdc (factory set)
or 6-9 Vdc