Afriso termohydrometer TH 80, fi80 mm, pressure 0–40 mH2O, temperature 20–120°C, connection G1/4, axial, accuracy class 2.5A

Afriso TH 80 termohydrometer combines temperature and pressure measurement in a single 80 mm dial instrument designed for thermal systems. It displays pressure in the range 0–40 mH2O and temperature between 20–120°C on a compact face with an axial G1/4 connection. The device meets accuracy class 2.5A and is intended for continuous indication of operating parameters in boilers, heating circuits, air conditioning and industrial process lines where simultaneous monitoring of pressure and temperature is required.

Advantages

The instrument integrates two measurement functions—pressure and temperature—into one housing, reducing the need for separate gauges and saving installation space. Its 80 mm dial provides clear readability while the axial G1/4 connection simplifies mounting in piping and equipment. Built to common industrial tolerances, the TH 80 offers repeatable indication within accuracy class 2.5A, suitable for general monitoring tasks in building services and light industrial applications.

Suitable for

• Boiler and central heating systems
• Hydronic heating and chilled water circuits
• HVAC plant rooms and distribution manifolds
• Industrial process lines requiring combined temperature and pressure indication

Key specifications

• Dial diameter: 80 mm
• Pressure measuring range: 0 to 40 mH2O
• Temperature measuring range: 20 to 120 °C
• Connection type: axial G1/4
• Accuracy class: 2.5A

How to use

Install the termohydrometer in a suitable port on the pipework or vessel using the axial G1/4 connection, ensuring the dial is oriented for easy reading. Avoid placing the instrument where vibrations, direct sunlight or excessive mechanical stress could affect readings. The TH 80 provides direct analog indication: read the pressure scale for static or low-velocity fluid head in mH2O and the temperature scale for fluid temperature in °C. Periodically verify the device condition and recalibrate or replace if accuracy is critical and readings drift beyond acceptable limits.

Usage recommendations

For reliable operation, install the instrument with appropriate fittings and shut-off valves to allow safe removal without system drain-down. Protect the gauge from freezing and corrosive environments, and follow local regulations for installation in pressurized systems. When used in closed heating systems, ensure compatible fluids and avoid prolonged exposure to aggressive media.