Products

4007 and 4007H Series

Dial type thermometers are developed to Measure, Indicate, and control the temperature of a particular application, such as for all power and distribution transformers, Generators, Bearing temperature monitoring etc.… Dial type thermometers consists of Bulb assembly, capillary and Expansion bellows. These operates based on liquid expansion technology with accuracy levels up to +/- 1% FSD. Instruments offer optional hybrid upgrades that incorporate embedded PT100 Sensor, enabling real-time temperature transmission for remote monitoring and SCADA systems

These Series Instruments are Robust, Reliable and Precision analog type instruments and digitally integrated for measurement of temperature with up to 4 contacts for control of transformer temperature. These Instruments are Suitable for all types of transformers and Accuracy levels up to +/- 1.5% FSD.

Features

• Fully sealed liquid expansion system provides self-powered indication, operation and does not require any periodic adjustments.
• Instruments are fully compensated for ambient temperature.
• 115 mm Segment Dial Size for Clear Temperature Indication.
• 60º Angular sweep with 2℃ each graduation.
• WTIs have a built in Thermal imaging system to simulate transformer’s hot spot indication.
• WTIs are provided with gradient adjustment through a shunt for CT secondary input current.
• Optional embedded PT-100 sensor in the sensing bulb of the local OTI / WTI enabling real-time temperature transmission for remote monitoring and SCADA systems.
• Instrument cases are aluminium die casted and polyester powder coated with standard ingress protection of IP55 and Corrosion protection up to 500 Hours of neutral salt spray.
• All inside and outside components are Brass and SS304.
• Maximum pointer facility is provided and can be reset from outside.
• All switch contacts are potential free micro switches.
• Panel mounting option provided.

Supplements with Hybrid Models

Technical Specifications