Submittal Sheet

ManualsBrandsFenwal ManualsHVAC SuppliesTemperature Switch (-100 to 600F)

F-01-020 Rev AA

Effective: January 2014

FEATURES

• Fast response

• Close control

• Extreme sensitivity

• Vibration resistance

• Adjustable

• Narrow Differential

• No Power Supply Required

• Brass or Stainless Steel Shell

APPLICATIONS

• Hydraulic Laminating Presses

• Livestock Watering Fountains

• Label Adhesive Applications

• Paint Drying Equipment

• Hot Stamp Printers

• Deep Fat Fryers

• Textile Platens

DESCRIPTION

THERMOSWITCH

controllers control temperatures as low as -

100

F (-73

C) and as high as 600

F (316

C) with the proven

dependability of over 75 years of service to satisfied customers.

PRINCIPLE OF OPERATION

The THERMOSWITCH

controller is a strut-and-tube type

thermostat comprised of two basic parts: the outer shell, made

of high-expanding metal and the strut assembly, made of low-

expanding metal.

A pair of electrical contacts is mounted on the strut assembly

and installed in the shell under tension or compression.

Since each end of the strut assembly is mechanically connected

to the ends of the shell, a net change of force is produced on the

strut assembly as the shell expands or contracts with changing

temperature. The temperature at which the contacts “make” or

“break” can be regulated by a temperature adjusting sleeve.

This adaptation of the differential-expansion principle gives

several important control advantages:

• Fast Response - Since the outer shell of the

THERMOSWITCH

is the active sensing member, and

not merely a housing, response to temperature change

is almost instantaneous.

• Close Control - The controller's shell and strut

arrangement has “anticipation” characteristics which

substantially reduce the amount of overshoot and

undershoot during conditions of rapid temperature

change. Anticipation is produced by an inherent time

lag between the shell and struts, which causes the shell

to “lead” the struts by an interval that varies with the

rate of temperature change. With rapid temperature

rise, the shell exerts a larger net force on the struts and

tends to pull them apart sooner than if the temperature

were rising slowly. The result is several degrees or

more of anticipation which helps produce closer

control.

• Extreme Sensitivity - The strut and contact operates

by slow make and break. This means that every

temperature change, no matter how small, causes a

corresponding change in the space between the

electrical contacts. Therefore, contact action can be

produced by a very small temperature change, which

accounts for the THERMOSWITCH

controller's

excellent resolution sensitivity of 0.1

F (0.05

C).

• Vibration Resistance - Since the strut assembly is

assembled under tension or compression, a properly

installed unit has excellent vibration resistance and will

provide the best possible control under difficult physical

conditions.

• Agency Approved - Various models are listed

Underwriters Laboratories (UL) and certified by the

Canadian Standards Association (CSA) and

compliance with applicable European norms for

acceptance the EU under the CE marking scheme.

Contact manufacturer for specific approval details.

SERIES 17000, 18000

THERMOSWITCH

Temperature Controllers

Summary of content (7 pages)

PAGE 1
SERIES 17000, 18000 THERMOSWITCH® Temperature Controllers FEATURES • • • • Fast response Close control Extreme sensitivity Vibration resistance • Adjustable • Narrow Differential • No Power Supply Required • Brass or Stainless Steel Shell APPLICATIONS • • • • • • • Hydraulic Laminating Presses Livestock Watering Fountains Label Adhesive Applications Paint Drying Equipment Hot Stamp Printers Deep Fat Fryers Textile Platens • DESCRIPTION THERMOSWITCH® controllers control temperatures as low as 100
PAGE 2
THERMOSWITCH® CONTROLLERS -100 TO 600ºF/-73 TO 316ºC Thermoswitch Unit Type and Dimensions (Inches/mm) Description The basic element of all THERMOSWITCH® controllers. Has all the desirable features of the ideal thermostat high sensitivity, wide adjustment range, small size, rugged construction, vibration resistance, and low cost. The unit can be inserted into a .625 in. (15.88 mm) reamed hole. Approximate weight is 2.5 ounces (70 grams).
PAGE 3
CORROSION RESISTANT Controller -100 to 600ºF/-93 to 316ºC Thermoswitch Unit Type and Dimensions (Inches/mm) Description This model has a hexagonal mounting section with male pipe threads at each end. This unit may be directly attached to electrical conduits or explosion proof fittings. It is ideally suited for photo processing, laboratory and experimental test work, food processing, bleaching & dyeing, and many other similar applications. Approximate weight is 5 ounces (140 grams).
PAGE 4
PROTECTIVE WELLS For use with 170XX 5/8” Diameter Cartridge THERMOSWITCH® Controllers Catalog No. 34-011201-000 Hex Head Well (321 Stainless Steel Well & Head) Applicable Modifications 1 Special Marking Applicable Special Features 31A Extended Shell Approximate weight is 4 ounces (112 grams) Pressure Ratings: 100 psi at -100ºF to +250ºF 60 psi at 600ºF Catalog No.
PAGE 5
MODIFICATIONS (1) Special Marking 01-990010-XXX Special marking may be rubber stamped in indelible ink at points A, B, or C. Amount of marking is limited to the space available. Specify test and location of marking. (2) Extended Lead Wires 01-9902X-XXX Lead wires may be extended to any length. Wire lengths are specified at that portion of lead wire outside of the THERMOSWITCH® controller, indicated by dimensions “L”.
PAGE 6
(8) Moisture Resistant Seal 01-990080-001 (8A) Under certain conditions where there is excessive moisture or vapor, a moisture resistant seal may be added to protect the interior of the THERMOSWITCH® controller. Modification 13 should be ordered with this modification. 01-990080-002 (8B) A same as 8A above except seal is four hold type so dial and knob may be used. Modification 13 should be ordered with this modification.
PAGE 7
SPECIAL FEATURES When special features are specified, THERMOSWITCH® controllers are assigned a special catalog number. As a result, THERMOSWITCH® controllers as received may bear a different catalog number than the one specified on the customer order. 31 Extended Shell - THERMOSWITCH® Controllers In applications where a standard THERMOSWITCH® controller is too short to reach the medium to be controlled, the shell length may be extended.