The WIKA Model 73 is a gas-actuated thermometer designed for precise and reliable temperature measurement in demanding industrial environments. Its stainless-steel construction and gas-filled measuring system ensure fast response and stable temperature indication across a wide measurement range.

Typical Applications:
• Chemical and petrochemical processing plants
• Oil and gas industry installations
• Power generation and energy systems
• Water and wastewater treatment facilities
• Machinery, tank and plant construction

Not Recommended For:
• Applications requiring electrical output signals to PLC or DCS systems
• Ultra-high precision laboratory temperature calibration

WIKA Model 73 Data sheets

Selection Notes

• Confirm the required temperature measurement range for your process conditions.
• Select the proper stem length and immersion depth to ensure accurate measurement.
• Determine if a capillary connection is required for remote indication.
• Verify the appropriate process connection type (e.g., G ½, ½ NPT, M20×1.5).
• Choose the suitable mounting configuration (radial, back mount, or capillary version).

Why Choose the WIKA Model 73 Gas-Actuated Thermometer

• Wide Temperature Measurement Range
Suitable for extreme industrial conditions with ranges from approximately −200 °C to +700 °C.

• Fast Response Performance
Gas-filled measuring system provides rapid response to process temperature changes.

• Durable Stainless-Steel Construction
Case and stem made from stainless steel for excellent corrosion resistance and long service life.

• Flexible Installation Options
Available with multiple mounting designs, including radial, axial, adjustable stem, or capillary versions.

• Designed for Process Industry
Built according to EN 13190 standards and suitable for chemical, oil & gas and power industries.

FAQ

Q: How does the Model 73 gas-actuated thermometer work?
A: It uses the expansion of gas inside the measuring system. Temperature changes create pressure changes that move the pointer on the dial.

Q: What temperature range can it measure?
A: Depending on configuration, the thermometer can measure temperatures from approximately −200 °C to +700 °C.

Q: Can it be used in outdoor industrial environments?
A: Yes. The stainless-steel construction and IP-rated housing make it suitable for harsh industrial conditions.

Q: Is remote temperature indication possible?
A: Yes. Versions with capillary connections allow the dial indicator to be mounted away from the measuring point.