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SERIES THC
TEMPERATURE/HUMIDITY SWITCH
Independent Displays, 61 Programmable Parameters, 4 SPST Relays
Humidity Switches
The Series THC Temperature/Humidity Switch simultaneously measures and
controls temperature and humidity. The unit offers a 3-digit red display for temperature
indication and a 3-digit green display indicating humidity. The Series THC is equipped
with four independent relays, two for temperature control and two relays for humidity
control.
The THC Temperature/Humidity Switch accepts up to two temperature probe inputs
(sold separately) and a humidity sensor. A humidity sensor with 0-1 V, 3 V (THC-P sold
separately), or 4-20 mA output can be used with the Series THC.
BENEFITS/FEATURES
• Temperature and humidity control in one device
• Password protected parameter settings
• Selectable fail safe status of relay outputs
APPLICATIONS
• Isolation chambers
• Environmental chambers
• Greenhouses
• Beer and wine chillers
MODEL CHART
Model Supply Power Unit
THC-30
20-250 VAC, 24 VDC
THC-31
20-250 VAC, 24 VDC °F°C
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SPECIFICATIONS
Measurement Range: Temperature: -58 to 302°F (-50 to 150°C); Humidity: 0 to
100% RH.
Input: Up to 2 thermistors and 1 humidity sensor.
Output: 4 SPST, 8 A relays @ 250 VAC.
Horsepower Rating (HP): 1/3 HP.
Control Type: ON/OFF direction, direct or reverse acting, neutral.
Power Requirements: 110 or 230 VAC (depending on model).
Accuracy: Temperature ±0.5% of probe range; Humidity: 20 to 90%.
Display: Two 3-digit displays. 1/2˝ digits.
Resolution: 0.1°.
Memory Backup: Nonvolatile memory.
Ambient Operating Temperature: 32 to 158°F (0 to 70°C).
Storage Temperature: -4 to 176°F (-20 to 80°C).
Panel Cutout: 5.15˝ x 3.97˝ (131 x 101 mm).
Front Panel Protection: IP64.
Weight: 1.17 lb (530 g).
Compliance: CE.
ACCESSORIES
Model Description
THC-P
Humidity probe, 3 V output, 4 ft (1.2 m) cable
TS-5
Temperature probe, PVC with 5 ft (1.5 m) cable
TS-6
Temperature probe, metal with 5 ft (1.5 m) cable
TS-51
Temperature probe, PVC with 10 ft (3 m) cable
TS-61
Temperature probe, metal with 10 ft (3 m) cable
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DWYER INSTRUMENTS, LLC | dwyer-inst.com220
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