Dwyer Instruments HS Specifications

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®
SERIES HS
HUMIDITY SWITCH
Programmable, 8 A Relay, 3-Digit Display
AIR QUALITY
1-11/32
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1-7/64
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The SERIES HS Humidity Switch provides control for humidifying or dehumidifying systems. Relative humidity, output status, and error messaging can be viewed on the bright green LED. Access to programming parameters can be locked for security purposes using the password protection feature.
FEATURES/BENEFITS
• Relative humidity display and control
• Parameter protection
• 0 to 1 V, 4 to 20 mA or 3 V (THC-P) input selection
APPLICATIONS
• Environmental chambers
• Beer and wine chillers
• Greenhouses
MODEL CHART Model Supply Power HS-311
115 VAC
HS-312
230 VAC
3
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Panel Cutout 2-51/64˝ x 1-9/64˝ (71 x 29 mm)
SPECIFICATIONS Relative Humidity Range: 10 to 100%
RH.
Input: 0 to 1 V, 3 V or 4 to 20 mA. Accuracy: THC-P: ±5% @ 20 to 90%;
HS: ±1% RH.
Display: 3-digit, green, 1/2˝ (12.7 mm)
digits.
Resolution: 1 digit. Temperature Limits: 32 to 158°F (0 to
70°C). Storage Temperature: -4 to 176°F (-20
to 80°C).
ACCESSORIES Model Description THC-P Humidity probe, 3 V output, 4´ (1.2 m) cable
Output: 16 A SPDT relay @ 250 VAC
resistive.
Horsepower Rating (HP): 1 HP. Control Type: ON/OFF. Power Requirements: 115 VAC or 230
VAC (depending on model).
Memory Backup: Nonvolatile memory. Weight: 2.3 oz (65 g). Front Panel Rating: IP64. Agency Approvals: CE, cURus.
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