Wika 50090A010A4SF Bimetal Dial Thermometer 9 in Stem

Product Description

The WIKA 50090A010A4SF is a bimetal dial thermometer designed for accurate temperature measurement in HVAC, plumbing, and industrial process applications. It operates across a range of 50 to 500 degrees F and features a 9-inch stem for reach into pipes, tanks, ducts, or equipment housings. The housing and stem are constructed from 18-8 stainless steel, offering corrosion resistance in wet or chemical-adjacent environments. With a back-connected mount configuration, the dial face reads cleanly when the thermometer is installed inline or in a panel. Accuracy is rated at plus or minus 1.0 percent of full scale. Licensed HVAC technicians, pipefitters, and plumbers install this type of instrument during system commissioning and maintenance.

This thermometer suits residential and commercial installations where a durable, direct-reading temperature gauge is needed at boilers, hydronic loops, domestic hot water systems, chillers, or process lines. The 9-inch stem length allows insertion into standard thermowell fittings or direct immersion applications where adequate depth is required to get an accurate reading away from pipe wall effects. The back-connected mount orients the dial perpendicular to the pipe or surface, which is useful in tight mechanical rooms or panel-mounted configurations.

Key Features

• Temperature range: 50 to 500 degrees F (10 to 260 degrees C)
• 9-inch stainless steel stem for deep immersion applications
• 18-8 stainless steel construction resists corrosion in wet and process environments
• Back-connected mount for inline or panel installation
• Plus or minus 1.0 percent full-scale accuracy

Compatibility

Designed as an OEM-style replacement or new-installation bimetal dial thermometer for use in residential and commercial HVAC, hydronic, plumbing, and light industrial temperature-monitoring applications where a back-connected, 9-inch stem instrument is specified.

Installation Notes

Installation is typically performed by a licensed plumber, pipefitter, or HVAC technician. Shut down the system and relieve pressure before inserting or removing the thermometer stem. When using a thermowell, ensure the well matches the stem diameter and insertion depth specified for the application. Do not overtighten the connection fitting, as stainless fittings can gall; use appropriate thread sealant rated for the service temperature.