Wika 20040D005G2 Bimetal Dial Thermometer 0-200F 4in Stem

Product Description

The WIKA 20040D005G2 is a bimetal dial thermometer designed for temperature measurement in HVAC, plumbing, and industrial process applications. It reads from 0 to 200 degrees F (negative 15 to 90 degrees C) and features a 4-inch stem for insertion into pipes, tanks, or ducts. The housing is constructed from 18-8 stainless steel, offering corrosion resistance in wet or chemically active environments. Accuracy is rated at 1.0 percent of full scale. The back-connected mount positions the dial face perpendicular to the pipe or wall, making it easy to read from the front of an installation panel or equipment enclosure. Licensed HVAC technicians and plumbers typically install this type of instrument during system commissioning or service.

This thermometer suits residential and light commercial systems where a reliable, mechanical temperature indication is needed without electrical power or signal wiring. Common install points include boiler supply and return lines, chilled water piping, hot water heater outlets, air handler discharge plenums, and hydronic distribution manifolds. The 4-inch stem length is appropriate for standard pipe fittings and thermowell installations where insertion depth into the fluid stream is limited to a few inches.

Key Features

• Temperature range of 0 to 200 degrees F (negative 15 to 90 degrees C) for broad HVAC and plumbing coverage
• 1.0 percent full-scale accuracy for reliable mechanical readout
• 4-inch stainless steel stem for insertion into pipes, tanks, or ducts
• 18-8 stainless steel housing resists corrosion in wet service environments
• Back-connected mount positions dial face outward for panel or wall-mounted readability
• No electrical power required — purely mechanical bimetal sensing element

Compatibility

Designed as an OEM-style replacement or direct installation bimetal thermometer for residential and commercial HVAC, plumbing, and hydronic heating systems requiring back-connected temperature gauges with a 4-inch stem.

Installation Notes

Installation is typically performed by a licensed plumber or HVAC technician. Shut off fluid flow and depressurize or drain the line before installing the stem into the pipe fitting or thermowell. Use appropriate thread sealant on the stem connection and do not overtighten, as stainless fittings can gall. Verify the stem insertion depth does not contact the opposite pipe wall before restoring flow.