Wika 52040A003G4 Bimetal Dial Thermometer 4 in Stem

Product Description

The WIKA 52040A003G4 is a bimetal dial thermometer designed for temperature measurement in HVAC, plumbing, and industrial process applications. It reads a range of 25 to 125 degrees F and features a 4-inch stem length with an adjustable angle mount, allowing the dial face to be positioned for clear visibility after installation. The housing and stem are constructed from 18-8 stainless steel, making the unit resistant to corrosion in wet or chemically active environments. Accuracy is rated at 1.0 percent of full scale. Licensed HVAC technicians and plumbers rely on instruments like this for monitoring supply and return line temperatures, chilled water loops, and boiler systems.

This thermometer is suited for residential and light commercial HVAC systems, hydronic heating and cooling loops, domestic hot and chilled water piping, and general process piping where surface or immersion temperature readings are required. The adjustable angle mount is particularly useful in tight mechanical rooms or when pipe orientation does not allow for a straight stem or rigid angle installation. The 4-inch stem provides adequate immersion depth in standard pipe sizes commonly found in building mechanical systems.

Key Features

• Temperature range of 25 to 125 degrees F (-5 to 50 degrees C) covers typical HVAC and chilled water system operating conditions
• 4-inch stainless steel stem for sufficient immersion depth in standard pipe installations
• Adjustable angle mount allows dial face orientation to be set for optimal readability in the field
• 18-8 stainless steel construction resists corrosion in wet, humid, and chemically active environments
• 1.0 percent full-scale accuracy suitable for HVAC and plumbing temperature monitoring
• Stainless steel housing provides durability in demanding mechanical room conditions

Compatibility

Designed as an OEM-style replacement or direct-install bimetal thermometer for use in residential and commercial HVAC, hydronic, and plumbing piping systems that require immersion temperature measurement in the 25 to 125 degrees F range.

Installation Notes

Installation is typically performed by a licensed HVAC technician or plumber. Before installing, shut off and depressurize the piping system and drain fluid from the line as needed to safely install the thermowell or direct-immersion fitting. Verify the stem insertion depth is adequate for the pipe diameter to ensure accurate readings. Consult applicable IPC or IFGC codes and local jurisdiction requirements for any connections made to pressurized systems.