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Comlab AG, based in Ittigen, Switzerland, is a specialist provider of radio communication equipment.

Its digital multi-band repeaters are designed to ensure seamless mobile communication and radio reception in challenging environments such as road and railway tunnels, mines, and other difficult-to-service areas such as mass-transit stations, shopping malls and large commercial buildings. With both standard and user-customised products available, it has chosen Variohm EuroSensor ETP-SP-PT platinum series hexagonal bolt temperature sensors as a convenient and cost-effective solution to monitor the instrument’s amplifier heating characteristics.

Each Comlab multi-band repeater typically includes several amplifier stages and associated sensors. As the Variohm hexagonal bolt probe is integrated into its own fastening screw, there is no need for an additional clamping assembly that would be required for a regular temperature probe. There is also an advantage in the way that Comlab design engineers applied the component as the heat transfer directed through the screw into the sensing element is fully optimised with minimal external temperature disturbance.

The ETP-SP-PT is part of a range of temperature probes based on the industry-standard PT100 and PT1000 thermistors that are aimed at a broad range of industrial, automotive and scientific applications for precision temperature measurement. As well as the hexagonal bolt version with a choice of M6, M7 and M8 thread options, a ring terminal probe is offered for hole clearance diameters between M4 and M8.

Standard probes for the PT100 and PT1000 thermistor cover a temperature range from -40 to +250°C. The hexagonal bolt and ring terminal designs are also available as lower cost NTC versions with a 10K3A1B sensing element for a lower, -40 to +125°C, temperature range. NTC versions are also available as probes housed in 4mm diameter PTFE or 5mm diameter brass.

A wide choice of options for both PTC and NTC versions include different thread sizes for the hexagonal bolt model, alternative ring terminal mount diameters, alternative housing diameter and length for the cylindrical probes, and other lead lengths or connector terminations. Fully connectable versions with M10 threaded connections are also available.

Variohm Eurosensor

Founded in 1974, Variohm Eurosensor has been the leading single source supplier of sensors and associated electronic systems for over 40 years.
Variohm’s product portfolio includes sensors and transducers for; position, pressure, temperature and load. With a technical sales support team ready for new challenges, Variohm can ensure that the most suitable sensor will be selected for applications in any industry.

Based in Towcester, Northamptonshire, Variohm Eurosensor has been the leading single source supplier of industrial sensors and associated electronic systems since 1974.

With a technical sales support team, receiving regular product training, Variohm has the structure and financial strength to deliver technical support and quality service along with expert up-to-date advice on their entire product portfolio. Variohm’s ability to design, develop, source and deliver a vast range of sensor solutions means that the sales support team is able to work with customers throughout their entire project, enabling customers to influence how their products work.

Variohm’s aim is to provide an efficient, cost effective, flexible service to customers, irrespective of their size, business or geographical location.

Variohm Eurosensor are part of the Variohm Holdings Group. Variohm Holdings as an entity can provide products to suit any sensing application in any industry and is eager to use it’s combined knowledge and skills to solve new applications.

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Variohm Eurosensor’s range of products monitor: –Position, Load, Pressure and Temperature

Position sensors include rotary and linear sensors, cable extension transducers and inclination sensors. Available in various contacting and non-contacting technologies, including Hall effect, incremental and absolute encoders and laser measurement.

Load and force sensing; load cells from 1g to 1000t capacities, available in a wide range of mechanical sizes and designs to suit all applications. High speed bagging controllers, torque transducers to measure both dynamic and static loads, with various mounting and electrical connection options.

Pressure transducers and switches to measure absolute, differential and gauge pressure up to 5000 Bar. These sensors are available is a wide range of outputs and also standard and customised housing options, with IP ratings up to IP69K.

Thermistors and probes offering a wide temperature measurement range, with excellent interchangeability and stability which are also space and flight approved or medically approved where appropriate. Custom and bespoke solutions are available and many are manufactured or modified on site.

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