MESSKO® BETECH®
Thermometer with bellow-type technology
MESSKO® BETECH® thermometers measure the oil and winding temperature (thermal image) in power transformers. The thermometers consist of a temperature sensor connected to the bellows for the measurement display via a capillary tube, and another expansion bellows to compensate for the ambient temperature. They are based on bellow-type technology – a maintenance-free, robust, and low-interruption measuring principle which impresses with its reliability and long service life. The devices are optionally Modbus-compatible.
Your Advantages at a Glance
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Expansion bellows technology
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High switching loads
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No readjustment or recalibration over the entire service life
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Contacts independently adjustable
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Compensation for ambient temperature
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Inspection glass made of composite safety glass with integrated UV filter
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Extremely durable and reliable
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Simple integration into ETOS® via RS485 Modbus RTU or 4...20mA
Product Information
| Housing | Die-cast aluminum, powder-coated, RAL 7033 (RAL 7038 optional) |
| Viewing glass | Laminated safety glass (standard) (optional: UV-stabilized polycarbonate) |
| Sensor screw joint | Square flange 4–holes; G3/4"; G1"; 7/8"-14UNF; other thread joints on request |
| Cable gland | Up to 3 x M20 and 1 x M16 |
| Measuring range | 0 - 150° C or -20 - 130° C or 0 - 160° C or -40 - 160° C; other ranges on request |
| Display accuracy | ± 3° C (30 - 150 °C) (optional: ± 2 °C or ± 1.5 °C) |
| Installation | Indoors and outdoors, tropic-proof |
| Ambient temperature | -40 - 70 °C (optional: polar version down to -60 °C) |
| Insulation voltage | 2.5 kV 50 Hz 1 min |
| Degree of protection | IP 55 in accordance with EN60529 (optional: IP 65) |
| Outputs | 4-20 mA; 4-20 mA and 5 V DC; 0-5 V DC; Pt100; Modbus RTU RS 485 |
| Weight | Approx. 4 kg |
Micro-switches |
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| Number | 2, 3, 4, 5 or 6 |
| Contact load | Standard SPDT 250 V AC / 15 A; (optionally: MBO, DPDT or gold plated SPDT) |
| Switch hysteresis | 12 ± 2 °C; others on request |
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| Housing | Die-cast aluminum, powder-coated, RAL 7033 (RAL 7038 optional) |
| Viewing glass | Laminated safety glass (standard) (optional: UV-stabilized polycarbonate) |
| Sensor screw joint | Square flange 4–holes; G3/4"; G1"; 7/8"-14UNF; other thread joints on request |
| Cable gland | Up to 3 x M20 and 1 x M16 |
| Measuring range | 0 - 150° C or -20 - 130° C or 0 - 160° C or -40 - 160° C; other ranges on request |
| Display accuracy | ± 3° C (30 - 150 °C) (optional: ± 2 °C or ± 1.5 °C) |
| Installation | Indoors and outdoors, tropic-proof |
| Ambient temperature | -40 - 70 °C (optional: polar version down to -60 °C) |
| Insulation voltage | 2.5 kV 50 Hz 1 min |
| Degree of protection | IP 55 in accordance with EN60529 (optional: IP 65) |
| Outputs | 4-20 mA; 4-20 mA and 5 V DC; 0-5 V DC; Pt100; Modbus RTU RS 485 |
| Weight | Approx. 4 kg |
Micro-switches |
|
| Number | 2, 3, 4, 5 or 6 |
| Contact load | Standard SPDT 250 V AC / 15 A; (optionally: MBO, DPDT or gold plated SPDT) |
| Switch hysteresis | 12 ± 2 °C; others on request |
Select language
