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A division of Ashcroft Inc., Weksler has set
the standard worldwide for accuracy, quality and dependability.
Weksler manufactures an extensive line of gas-actuated thermometers.
Considerations in Selecting a Weksler
Gas-Actuated 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 gas-actuated dial
thermometers have an accuracy of ± 1% of the full-scale range. For
accurate readings the entire sensitive portion of the bulb must be
fully immersed into the medium being measured.
CASE - Weksler offers a wide variety of
case styles and materials. Determine how the thermometer is to be
mounted: direct, surface (wall) or flush (in panel). Determine the
desired case material: polypropylene, aluminum (black enameled) or
stainless steel (300 series).
FACE - A gasketed glass window is standard
on Weksler gas-actuated thermometers. Where breakage is a concern, a
plastic or shatterproof glass window is optional at extra cost.
Plastic windows are not suitable where head temperature exceeds
150°F (65°C).
POINTER - All Weksler gas-actuated
thermometers have adjustable pointers. This permits pointer
repositioning during calibration check or allows maximum precision
at a selected point within the scale range.
MOUNTING - Weksler gas-actuated
thermometers are available in remote mounted types (with capillary
tubing between case and sensing bulb) and direct mounted types
(sensing bulb is attached directly to case). Remote mounted types
allow the temperature to be read at a location remote from the
actual temperature source. Remote mounting is also desirable to
isolate the head (case, scale, pointer and internal parts) from the
damaging effects of shock, vibration or excessive heat that may be
present at the temperature source. Weksler direct mounted
thermometers are available in “adjust angle” types which allow the
head of the thermometer to be positioned for the most desirable
viewing angle or rigid (non-adjustable types with fixed bottom or
rear connections. Direct mounted units are installed directly on
pipes, tanks or other vessels.
BULB TYPES - Weksler gas-actuated
thermometers are available with various styles of plain bulbs or
union connection bulbs. The bulb is the sensing element at the tip
of the thermometer that reacts to temperature changes. The entire
thermometer including the bulb, head assembly and capillary tubing
(on remote types) is filled with an inert nitrogen gas offering fast
response and linear dial graduations. Plain bulbs are those without
threaded fittings for sensing air temperature or liquid temperatures
in open tanks, vats, sinks, etc. Union connected bulbs have threaded
swivel nuts that hold the bulb into a bulb fitting such as a
thermowell, bushing or flange.
HIGH PRESSURE OR CORROSIVE APPLICATIONS -
In these applications, use of a separable thermowell is recommended.
In addition to protecting the thermometer, thermowells facilitate
removal of the thermometer without having to shut down the system.
To start, please select a basic type of
Weksler gas-actuated thermometer
or contact us for help: |
