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Dwyer Instruments, Inc./P.O. Box 373/Michigan City, Indiana 46361/Phone 219 879-8000/Fax 219 872-9057 • U.K. Phone (+44) (0)1494 461707 • Australia Phone 61 2 4272 2055 29

SeriesHS Humidity Switch

Programmable, 8 Amp Relay, 3-Digit Display

The microprocessor based Series HS Humidity Switch

provides control for humidifying or dehumidifying. Relative

humidity, output status, and error messaging can be viewed on

the bright green LED. The switch features 9 user defined

parameters including setpoint, hysteresis, control type, cycle

time, and probe adjustment. Access to programming parame-

ters can be locked for security purposes using the password

protection feature. Use the configuration key (sold separately)

to quickly program multiple units. The Series HS includes a fit-

ting clip for panel mounting, gasket, rear terminal cover, and

instruction manual.

STOCKED MODELS in bold

3[76]

1-11/32[34]

2-3/8[60]

1-7/64[28]

SPECIFICATIONSRelative Humidity Range: 0 to 100% RH.Input: 0 to 3V humidity probe (not included).Accuracy: ±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).Output: 8 A relay @ 250 VAC resistive.Horsepower Rating (HP): 1/3 HP.Control Type: ON/OFF.Power Requirements: 110 VAC or 230 VAC (Dependingon model).Memory Backup: Nonvolatile memory.Weight: 2.3 oz (65 g).Front Panel Rating: NEMA 4X (IP65).Agency Approvals: CE, UL.

PARAMETERS

SPr0r1r2d0c0c1LcHcP1P2H5

DescriptionSet Point

Differential or HysteresisLower Value Set PointHigher Value Set Point

Control Type (humidifying/dehumidifying)Min. Stop Time for LoadContinuous Cycle TimeRH value for 4 mA input

RH value for 20 mA inputProbe Adjustment (shifting)

Probe Type (0-1 V, 0-3 V, 4-20 mA)Parameter Access code

Units%%%%

OptionMinutesHours

%%%

RangeNumeric

Ranger1 to r21 to 990 to r2

r1 to 100Hu/dH

0 to 59 min.0 to 24 hr0 to 100

50 to 1000 to 10

01/03/420 to 99

Panel Cutout 2-51/64˝ x 1-9/64˝ (71 x 29 mm)

C

APPLICATIONSHS Digital Humidity Switches are suitable for industrialchillers, environmental chambers, walk-ins and freezers, heatsealers, beer and wine chillers, mug frosters, coolers, displaycases and cabinets, meat and produce storage, floral preserva-tion, refrigerated transportation, laboratories, food serviceequipment, ovens and dryers, green houses, museums, andtobacco preservation.

Accessories

Corporate Headquarters, Dwyer Instruments, Inc. 102 Indiana Highway 212, Michigan City, IN 46361 U.S.A.

NPB-31 I

Model Input SupplyNumber Sensor VoltageHS-311 0 to 3 V 110 VACHS-312 0 to 3 V 230 VACHS-111 0 to 1 V 110 VACHS-112 0 to 1 V 230 VACHS-411 4 to 20 mA 110 VACHS-412 4 to 20 mA 230 VAC

THC-P Humidity Probe, 0 to 3 V output, 4 ft (1.5 m) cableTS2-K Configuration Key

Dwyer Instruments, Inc. produces a broad range of competitively

priced precision instruments for measuring, transmitting and controlling

pressure, temperature, level and flow.

Many of these instruments are widely known by their individual brand

names, such as Magnehelic® and Spirahelic® pressure gages, Photohelic®

switch/gages, Rate-Master®, Mini-Master® and Visi-Float® flowmeters,

Slack-Tube® and Flex-Tube® manometers, and Dwyer® pressure switches.

Other established Dwyer brands, including Flotect® flow and level

switches, Hi-Flow® valves, Self-tune® temperature controllers and Iso-

Verter® signal converters/isolators, are the products of companies that are

now divisions of Dwyer Instruments— Mercoid, W. E. Anderson, Proximity

Controls and Love Controls.

Founded in 1931, Dwyer Instruments moved its manufacturing and

headquarters from Chicago, Illinois, in 1955, to newly constructed, great-

ly-expanded facilities in Michigan City, Indiana. The company has since

added four more Indiana facilities—in Wakarusa, South Whitley, Kingsbury

and Wolcott—as well as manufacturing facilities in Anaheim, California;

Fergus Falls, Minnesota; Kansas City, Missouri; and Naguabo, Puerto Rico.

In addition to making and selling quality precision instruments, Dwyer

is committed to a standard of customer service—including competitive

prices and knowledgeable, courteous technical support—that generates

and sustains long-term relationships.

Dwyer Instruments, Inc.

DWYER INSTRUMENTS, INC.P.O. Box 373, 102 Indiana Highwy 212

Michigan City, IN 46361 U.S.A.

www.dwyer-inst.comFOR SALES OR

TECHNICAL SERVICE AND

TO ORDER:Phone: (800) 872-9141

(219) 879-8000Fax: (219) 872-9057

e-mail: info@dwyer-inst.com

For More Product Information:General Info: info@dwyer-inst.comLiterature: lit@dwyer-inst.comTechnical: tech@dwyer-inst.comQuotes: quotes@dwyer-inst.comCREDIT CARDS: Dwyer Instruments, Inc.accepts MasterCard® and Visa®.

PROMPT SHIPMENTS: Dwyer Instruments, Inc. islocated in the heart of industrial America, with readyaccess to all forms of transportation. Most orders areshipped the same day that they are received.Expedited shipments and overnight deliveries areavailable.

©Copyright 2003 Dwyer Instruments, Inc. Printed in U.S.A. 12/03

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