Axial thermometer 0°C - 120°C, 63 mm

Product detailed description

This axial thermometer is commonly used in residential and commercial heating systems where space is limited. It is ideal for installation near heating distributors, manifolds or in compact mechanical rooms where larger instruments cannot fit. The compact design allows for accurate temperature monitoring in tight spaces without compromising on durability or precision. The device is frequently used in hydronic heating systems, including underfloor heating, central heating and heat pump installations, where reliable temperature feedback is essential for system performance and diagnostics.

Its steel body ensures robustness in environments with fluctuating temperatures and potential exposure to moisture. The axial connection allows for streamlined installation in piping systems, ensuring the thermometer aligns with the flow direction. The 63 mm dial provides clear visibility in restricted areas, making it suitable for use in panel-mounted control systems or behind service panels.

Technical parameters

Type	Axial bimetallic thermometer
Range	0-120°C
Dial diameter	63 mm
Body	Steel
Connection	Brass, 1/2 inch rear (axial)
Mechanism	Bimetallic spiral
Warranty	2 years
EAN	5900308749975
Code	TERM.63
Brand	Hydroland

The temperature range of 0°C to 120°C makes this thermometer suitable for most heating system applications, including domestic hot water circuits and low-temperature heating systems. The 63 mm dial size is specifically designed for installations where a 100 mm version would not fit. The steel body provides resistance to mechanical stress and corrosion, while the brass axial connection ensures compatibility with standard pipe fittings. These parameters are essential for ensuring the device fits the physical constraints of the installation and meets the operational requirements of the system.

Installation and connection

Installation of the thermometer requires a suitable location on the pipe where the temperature is to be measured. The axial connection allows for direct insertion into the pipe system, with the thermometer aligned along the pipe axis. The 1/2 inch connection is compatible with standard pipe fittings and requires a threaded connection. It is important to ensure the connection is fully tightened and sealed to prevent leaks. The installation should be carried out in a position that allows for easy access to the dial for monitoring and maintenance.

Common installation mistakes include incorrect alignment of the thermometer with the pipe axis, which can affect the accuracy of the reading. It is also important to avoid over-tightening the connection, which can damage the brass fitting. The installation should be carried out in a location free from direct exposure to sunlight or radiant heat sources that could affect the reading. After installation, the system should be tested to ensure the thermometer is functioning correctly and the connection is secure.

Compatibility and accessories

This thermometer is compatible with standard heating system components, including pipe fittings, valves and control systems. It can be used in conjunction with other instruments such as pressure gauges and flow meters to provide a comprehensive monitoring solution. No additional accessories are required for basic installation, but it is recommended to have sealing tape or thread compound on hand for the 1/2 inch connection. The device is not designed for use with electrical control systems and should not be connected to power sources or control circuits.

Technical background for designers

The thermometer operates using a bimetallic spiral mechanism, which expands or contracts in response to temperature changes. The spiral is made from two different metals bonded together, each with a different coefficient of thermal expansion. As the temperature increases, the spiral bends, moving the pointer across the dial. The steel body provides structural support and protects the internal mechanism from external influences. The brass connection ensures good thermal conductivity and compatibility with standard pipe materials. The device is designed for integration into closed-loop heating systems, where it provides a visual indication of temperature without requiring electrical power or external calibration.

The accuracy and stability of the device depend on the quality of the bimetallic spiral and the alignment of the connection. The steel body also contributes to the long-term durability of the instrument, reducing the risk of mechanical failure. The 0°C to 120°C range is suitable for most heating applications, but the device should not be used in environments where the temperature exceeds the specified range. The axial connection ensures that the thermometer is exposed to the full flow of the medium, improving the accuracy of the reading.

Service and operation

Regular inspection of the thermometer is recommended to ensure it remains in good working condition. The connection should be checked for leaks and the dial should be inspected for any signs of damage or obstruction. The device does not require regular calibration, but it should be verified against a reference thermometer if accuracy is suspected to be compromised. The 2-year warranty covers manufacturing defects but does not include damage caused by incorrect installation or use outside the specified temperature range.

During operation, the pointer should move smoothly across the dial in response to temperature changes. If the pointer becomes stuck or the reading is inconsistent, the device should be removed and inspected for internal damage. The steel body and brass connection are resistant to corrosion, but prolonged exposure to moisture or aggressive chemicals may affect the performance of the device. In such cases, the thermometer should be replaced to ensure accurate temperature monitoring.

Frequently asked questions

Can the thermometer be used in a closed-loop heating system?
Yes, the thermometer is suitable for use in closed-loop heating systems where the temperature range is within 0°C to 120°C. It provides a visual indication of the temperature without requiring electrical power.

Is the thermometer suitable for installation in a vertical pipe?
Yes, the axial connection allows for installation in both horizontal and vertical pipes. The alignment of the thermometer with the pipe axis is important for accurate readings.

Can the thermometer be used with a digital control system?
No, the thermometer is a mechanical device and does not provide an electrical output. It is not compatible with digital control systems and should not be connected to electrical circuits.

What should be done if the pointer does not move?
If the pointer does not move in response to temperature changes, the device should be removed and inspected for internal damage. The bimetallic spiral may be stuck or the connection may be damaged. In such cases, the thermometer should be replaced.