Wika 51040A005A4SF Bimetal Dial Thermometer 0-200F

Product Description

The WIKA 51040A005A4SF is a bimetal dial thermometer designed for temperature measurement in HVAC, plumbing, and industrial process applications. It reads across a range of 0 to 200 degrees F and features a 4-inch stem with a bottom-connected mount configuration. The housing and stem are constructed from 18-8 stainless steel, making it suitable for use in wet, corrosive, or high-humidity environments. Accuracy is rated at plus or minus 1.0 percent of full scale. Licensed HVAC technicians, plumbers, and process technicians use this type of instrument to monitor fluid or air temperatures in pipelines, ductwork, tanks, and equipment manifolds.

This thermometer is well-suited for residential and light commercial HVAC systems, hydronic heating and cooling loops, domestic hot water systems, and general plumbing installations. The bottom-connected mount allows direct insertion into a thermowell or tapped fitting at the base of the dial, keeping the face readable in panel or pipe-mounted applications. The 4-inch stem length accommodates standard pipe fittings and thermowell depths commonly found in trade installations.

Key Features

• Temperature range: 0 to 200 degrees F (-15 to 90 degrees C)
• 4-inch stem length for standard thermowell and pipe fitting compatibility
• Bottom-connected mount for direct pipe or panel installation
• 18-8 stainless steel construction on housing and stem for corrosion resistance
• Plus or minus 1.0 percent full-scale accuracy
• Weighs 1.46 pounds — suitable for permanent in-line installation

Compatibility

Designed as an OEM-style replacement or direct-install bimetal thermometer for residential and commercial HVAC, hydronic, and plumbing systems using standard bottom-connected thermowell or tapped pipe fittings.

Installation Notes

Installation is typically performed by licensed plumbers or HVAC technicians. Shut off fluid flow and relieve system pressure before inserting or removing the thermometer stem from any pressurized line or thermowell. Use a properly sized thermowell where direct fluid contact with the stem is not desired or permitted by code. Follow applicable local mechanical and plumbing codes when installing temperature instrumentation on pressurized systems.