Wika 50090A004G4 Bimetal Dial Thermometer 0-140F 9in Stem

Product Description

The WIKA 50090A004G4 is a bimetal dial thermometer designed for temperature measurement in HVAC, plumbing, and industrial process applications. It reads from 0 to 140 degrees F (negative 20 to 60 degrees C) and uses a back-connected mount for panel or pipe installation where the dial face needs to read flush against a surface. The stainless steel stem measures 9 inches in length and is constructed from 18-8 grade stainless steel, making it resistant to corrosion in wet or chemically active environments. The instrument carries a stated accuracy of plus or minus 1.0 percent of full scale. Licensed HVAC technicians, plumbers, and mechanical contractors typically install this type of thermometer as part of a permanent monitoring setup in piping, ductwork, or process equipment.

This thermometer is suited for residential and light commercial HVAC systems, hydronic heating loops, domestic hot and chilled water piping, and similar installations where a local temperature readout is required. The 0 to 140 degrees F range covers typical supply and return water temperatures found in heating and cooling distribution systems. The back-connected configuration is commonly used when mounting into a thermowell or directly into a pipe fitting where a rear-entry stem and face-forward dial orientation is preferred by the installer.

Key Features

• Temperature range of 0 to 140 degrees F (negative 20 to 60 degrees C) suits standard HVAC and hydronic applications
• 9-inch stainless steel stem length reaches into pipes, ducts, or process vessels
• 18-8 grade stainless steel construction resists corrosion in wet and chemical environments
• Back-connected mount allows flush panel or pipe installation with dial facing forward
• Plus or minus 1.0 percent full-scale accuracy for reliable local temperature indication
• Stainless steel housing provides durability in field service conditions

Compatibility

Designed as an OEM-style or replacement bimetal dial thermometer for back-connected thermowell and direct-insertion mounting applications in HVAC, plumbing, and light industrial piping systems.

Installation Notes

Installation is typically performed by a licensed HVAC technician or plumber. Shut off the system and relieve any pressure in the pipe or vessel before inserting or removing the stem. When mounting into a thermowell, ensure the thermowell is rated for the operating pressure of the system. Follow applicable mechanical codes, including ASME B31.9 for building services piping, and consult the manufacturer documentation for proper immersion depth and connection torque guidance.