Wika 52877149 Bimetal Dial Thermometer 0-250F 4in Stem

Product Description

The WIKA 52877149 is a bimetal dial thermometer designed for temperature measurement in HVAC, plumbing, and industrial process applications. It reads from 0 to 250 degrees F (-20 to 120 degrees C) and uses a bimetallic sensing element housed in a stainless steel casing rated at 18-8 material grade. The stem is 4 inches in length with a back-connected mount, positioning the dial face parallel to the pipe or surface being monitored. Accuracy is rated at 1.0 percent of full scale. This thermometer is installed by HVAC technicians, plumbers, and industrial maintenance personnel as a fixed-point temperature indicator in piping systems, boilers, water heaters, and similar equipment.

This thermometer fits residential and light commercial applications where a reliable, analog temperature reading is needed at a fixed measurement point. The back-connected, back-mounted configuration suits installations in tight spaces or panel-mounted situations where a straight-in stem entry from the rear of the dial is required. Typical install scenarios include hydronic heating loops, domestic hot water systems, cooling coils, and process piping where continuous temperature monitoring is part of routine system checks or commissioning.

Key Features

• Temperature range: 0 to 250 degrees F (- 20 to 120 degrees C)
• 1.0 percent full-scale accuracy for reliable process readings
• 4-inch stem length suits standard pipe wells and inline fittings
• Back-connected, back-mounted configuration for panel or tight-clearance installs
• 18-8 stainless steel housing for corrosion resistance in wet or humid environments

Compatibility

Designed as an OEM-style or replacement bimetal dial thermometer for residential and commercial piping systems equipped with a standard thermowell or direct-insertion fitting that accepts a 4-inch back-connected stem probe.

Installation Notes

A licensed plumber or HVAC technician should install this thermometer. Shut off and depressurize the system before inserting or removing the stem from any thermowell or fitting. Use a proper thermowell rated for the system pressure to avoid direct-immersion stress on the stem. Refer to applicable codes such as the International Plumbing Code or local mechanical codes for thermometer placement requirements in hydronic and potable water systems.