Gauges - Temperature - Thermometers




Gauges - Temperature
are available from
WIKA Instrument Corporation

Gas Actuated Thermometers

These thermometers known as Gas Actuated Thermometers fall within "Class IV, Gas Filled with adsorbent" definition. They use a thermal system filled with gas and an adsorbent (such as activated granular carbon) in the bulb. This technology allows for a significantly reduced bulb size.

WIKA Gas Actuated Thermometers offer extremely high accuracy, low ambient error, and extreme over-range capability. With the same small bulb diameter throughout the offered ranges, the WIKA thermometer can be installed in most existing piping and tank applications.

WIKA Gas Actuated Thermometers provide the solution to mercury-free requirements in food processing, refrigeration, or other mercury-sensitive environments. A variety of case types, sizes and materials provides a custom made instrument for each application in ranges between -300°l Fahrenheit and +1200° Fahrenheit or equivalent Celsius. Dual reading scales (F & C) are standard.

WIKA Gas Actuated Dial Thermometers are available as direct reading (Just-Rite), or remote reading with stainless steel bulbs and armored capillary. Options include Min/Max Pointer, Red Set Hand. WIKA extends a one-year warranty against defects in material and workmanship on standard Gas Actuated Dial Thermometers. Details available upon request.

Standard Features
Accuracy:
Guaranteed to be accurate to within 1% of full scale. Calibration is to standards traceable to the National Institute of Standards and Technology.
Over Ranges:
50% of span above top of range or 1300°F, whichever is lower. Specific over-temperature capability is range dependent, so consult the factory for application beyond these conditions.
Cases:
Drawn Stainless Steel, aluminum and Phonemic/GRP for stem, surface or panel mount.

Fahrenheit (outer scale)			Celsius (inner scale)
Range	Figure Interval	Subdivision	Range	Figure Interval	Subdivision
-320/100	50	5	-200/40	20	2
-120/120	20	2	-80/50	10	1
0/120	10	1	-20/50	5	1
0/160	20	2	-20/70	10	1
-40/180	20	2	-40/80	10	1
20/240	20	2	-10/115	10	1
0/300	25	5	-20/150	20	2
50/400	50	5	0/200	50	2
50/550	50	5	0/300	50	5
50/750	50	5	0/400	50	5
400/1200	100	10	200/650	50	5

Sizes:
4-1/2" and 6"
Mounting Connections:
Lower or back on remote reading thermometers; adjustable angle on Just Rite.
Bulb:
3/8" dia. x 3" active length standard in stainless steel.
Plain, Sliding Union.
Capillary:
316 stainless steel with stainless steel spring armor, or 316 stainless steel with stainless steel interlocking armor. 99' maximum.
Dials:
White coated aluminum with black marking.
Pointer:
Adjustable, balanced, aluminum with matte black finish.
Ambient Error:
0.25% at midscale of span per 25° F change in ambient temperature.
Thermowells:
See Thermowell listings further down.

Installation Guidelines

While WIKA Gas Actuated Dial Thermometers are highly accurate and rugged instruments, there are some guidelines that should be followed in their application and installation.

Consideration must be given to the measured medium. Is it corrosive, abrasive, turbulent, or under pressure? Can the sensing bulb be placed to give an accurate indication of temperature?

The sensing bulb should be placed in a non-turbulent area of piping or ducting and as close to the center of the flow as possible. In tanks, it should be placed in an area of the tank that will provide a good average of the temperature of the fluid contained. The bulb should be protected from corrosive or abrasive media and excessively high pressures. The usual method of protection is the use of a thermowell.

When a remote reading thermometer is installed, consideration must be given to the location of the bulb, the dial indicator, and the routing of the capillary. The capillary must be located where it will not be damaged by workers or equipment used in future maintenance. Remember that the capillary CANNOT be cut to facilitate installation or relocation.

Options and Accessories:

Min/Max Pointer:
Reset externally, indicates the maximum or minimum temperature.
Red Set Hand:
Indicates a desired temperature, set by removing ring and glass.
Flush Mounting Ring:
Adapts the phenolic case for flush panel mounting.
Windows:
Optional Acrylic or Shatterproof Glass available.
Custom Dials:
Color bands, logs, etc. Please consult factory.

Installation & Operating Instructions

For installation and use of WIKA Filled System Dial Thermometers

General:
Before installing a thermometer, consideration should be given to temperature, humidity, vibration, shock and other climatic and ambient conditions of the service application.

Bulbs may be installed in thermowells or directly into the medium for temperature measurement.

The filled system of the thermometer is a sealed unit and must remain sealed. The connecting tubing of the remote units should be kept coiled to avoid sharp bends or kinks. Connecting tubing must not be cut.

Thermometers can be rendered inaccurate during shipment despite care take in packaging. To insure conformance to the accuracy, to which the thermometer was manufactured, it should be checked before use.

Installation Procedure:
The bulb should be located in the process at the point that will provide the temperature indication that is most representative of the process temperature. Circulation of the medium around the bulb is necessary for optimum response time and accuracy.

Direct Reading Thermometer - use wrench flats when provided to install the thermometer.

Remote Reading Thermometer - do not twist, kink, strain or cut the connecting tube. After the case has been mounted, uncoil and stretch out the connecting tubing, placing the bulb at its intended location. After installing the bulb, fasten the connecting tubing to a wall or other support to prevent damage. Position the connecting tubing to avoid extreme temperature. Since the connecting tubing length cannot be altered, any excess should be coiled on a 3-inch minimum radius and supported near the case.

	Panel Mount WIKA Gas Actuated Remote Reading Dial Thermometers accommodate most panel mounting requirements. Stainless Steel "U" clamp cases are available in 4-1/2" and 6" dial sizes. A Stainless Steel semi-Flush Front Flange case is available in 4-1/2" and 6" dial sizes. All panel mount thermometers are back connected. Turret phenolic case is available in 4-1/2". Just-Rite is available in 4-1/2" and 6". Gas Actuated Specifications

	Wall Mount WIKA Gas Actuated Remote Reading Dial Thermometers are manufactured in three wall-mounted case styles: the Cast Aluminum Back Flange Case with a 4-1/2" dial size, the Phenolic/GPR Turret Case, also with a 4-1/2" dial size, and the Stainless Steel Back Flange Case available in 3-1/2", 4-1/2" and 6" dial sizes. All may be specified with back or lower connected capillaries. Gas Actuated Specifications

	Adjustable Angle For direct reading applications, WIKA offers the Just-Rite Adjustable Angle Gas Actuated Thermometer. A flangeless, stainless steel case with bayonet bezel is offered with 360° of rotation around the angle adjustment to allow easy reading of the indicated temperature from any given position. The stainless steel bulb can be rotated 180° to either side of the vertical axis of the stem to allow mounting from the top, bottom, or either side of an installation. The union fitted bulb can be fitted directly into a process connection or into a thermowell or duct flange. Just-Rite's standard bulb/stem thermal system is available in 4", 6" and 9" lengths. However, only 3" of the tip is active. Longer lengths are available, please consult factory. Gas Actuated Specifications

Vapor Actuated Thermometers
	Vapor Actuated Specify WIKA Vapor Actuated Thermometers when a low-cost, accurate, remote reading dial thermometer is required. WIKA's Vapor Actuated Thermometers are available in U-Clamp, front flange or back flange case configurations. Several bulb, capillary and process connection combinations are available to suite various applications. WIKA Vapor Actuated Thermometers are well-suited for: Refrigeration, Drying Ovens, Chemical Processing, Solar Heating, HVAC Systems, Water Treatment, Plating and O.E.M. Applications. Vapor Actuated Specifications

Industrial Glass Thermometers
	6", 7" & 9" Industrial Glass Thermometers WIKA Industrial Glass Thermometers offer quick, easy-to-read temperature measurement for tough applications. Glass/mineral reinforced GE Valox® housings and spring mounted windows contribute to impact, shock and vibration resistance. WIKA Industrial Glass Thermometers are the ideal choice for process piping, HVAC/R applications, diesel engines and compressors. The Just-Rite model, available with 7" and 9" scales, has a fully adjustable connection for easy reading at any angle. WIKA 6" Industrial Glass Thermometers are manufactured in straight and back connected configurations, and done with a standard dual threaded brass socket with both 1/2" and 3/4" NPT connections. Industrial Glass Specifications

Solar Powered Thermometers
	Solar Industrial Thermometers There is an alternative to the old mercury-in-glass industrial thermometer - the Solar Industrial Thermometer for WIKA Instrument Corporation. The Solar Industrial Thermometer frees you from toxic mercury while offering users fast, accurate, and easy-to-read temperature indications. This thermometer features a totally adjustable case to permit viewing at any angle, and its bulb and socket are completely interchangeable with standard industrial glass thermometers. The Solar Industrial Thermometer is switchable between Fahrenheit and celsius, and offers a sensing range of -50 to 300°F and -50 to 150°C, resolved in tenths of a degree, with accuracy to within 1% of reading. The solar panels on the instrument require only 10 LUX (one foot-candle) of light to power the 3/8" LCD digits, and the thermometer updates its reading every 10 seconds. The case is made of high-impact ABS, and the thermometer is available with a standard thermowell or union hub, with stem lengths of 3-1/2" and 6". Solar Industrial Specifications

	Solar Digital Thermometers WIKA's Solar-Powered Digital thermometer is the ideal instrument where exact readings are required, such as in pilot plant or R&D applications. The 3" dial offers easy-to-read digital temperature in single-degree increments in either Fahrenheit or Celsius scales. The instrument is housed in a back connected or adjustable angle, weather-resistant, hermetically-sealed case. Solar Digital Specifications

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Last modified:

Gauges - Temperature

are available from

WIKA Instrument Corporation

Gas Actuated Thermometers

Installation & Operating Instructions

Panel Mount

Wall Mount

Adjustable Angle

Vapor Actuated Thermometers

Vapor Actuated

Industrial Glass Thermometers

6", 7" & 9" Industrial Glass Thermometers

Solar Powered Thermometers

Solar Industrial Thermometers

Solar Digital Thermometers