Dwyer Instruments HS Specifications

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SERIES HS

HUMIDITY SWITCH

Programmable, 8 A Relay, 3-Digit Display

AIR QUALITY

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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

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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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