Weksler Bimetal Thermometers

Considerations in Selecting a Weksler Bimetal Thermometer

RANGE

- The maximum operating pressure should not exceed 75% of the full-scale range. The normal operating range should be in the middle half of the range (between 25% and 75% of the full-scale range); whenever possible.

DIAL SIZE

- Select a dial size that allows you to comfortably read the dial from the normal distance when installed.

ACCURACY

- All Weksler Bimetal Thermometers have an accuracy of ± 1% of the full-scale range. For accurate readings stem must be immersed at least 2 inches in liquids and 4 inches in gases.

UNDER/OVER RANGE PROTECTION

- Temporary exposure to temperatures under or over 50% of the full-scale range will not impair accuracy (up to 500°F or 260°C maximum).

CASE ASSEMBLY

- The case, bezel, stem and fittings are stainless steel (300 series). The head assembly is sealed to exclude dirt, dust and moisture on 3˝ and 5˝ dial sizes, all joints are welded.

DIALS

- Weksler thermometer dials are white with clear black graduations and numerals and are easy to read.

FACE

- A gasketed glass window is standard on 3˝ and 5˝ dial sizes. Where breakage is a concern, a Weksler plastic or shatterproof glass window is optional at extra cost. On 1˝ and 2˝ dial sizes a plastic window is standard (no options available). Weksler plastic windows are not suitable where head temperature exceeds 150°F (65°C).

EXTERNAL ADJUSTMENT

- An external adjustment at the rear of the 3˝ and 5˝ case permits adjustment at a specific point or pointer repositioning during calibration check.

VIBRATION AND SHOCK

- If present, use of either a heavy duty Weksler bimetal, Weksler MIL SPEC BiMetal or a remote mounted gas actuated Weksler thermometer is recommended.

HIGH PRESSURE OR CORROSIVE APPLICATIONS

- In these applications, use of a separable Weksler thermowell is recommended. In addition to protecting the thermometer, thermowells facilitate removal of the thermometer without having to shut down the system.