MESSKO® MTO

Oil level indicators for transformers

MESSKO® MTO oil level indicators are measuring devices with or without main switching contacts. They are especially well suited for fill level measurements in transformer oil conservators. There are two different float drive types with regard to the oil conservator: float movement in radial or axial direction. The fill level indicator can be supplied with up to three micro-switches, either permanently installed or freely adjustable, and optionally with up to 4 additional relays. The device allows further options such as analog and/or digital remote transmission of the oil level to control cabinets, monitoring systems (e.g. ETOS®) or the control room.

Your Advantages at a Glance

  1. Optional outputs: RS485 Modbus RTU or 4...20 mA

  2. Optional installation with angle of inclination (15°; 30°; 45°)

  3. Laminated composite safety glass with UV filter

  4. Functional reliability and high accuracy due to state-of-the-art measuring technology

  5. Freely adjustable limit switches over the scale range with up to 7 contacts with Modbus interface

  6. Easy integration into ETOS® – Embedded Transformer Operating System

  7. Separation of sensor and display, element with magnetic coupling

  8. No readjustment or recalibration required during the entire service life

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Product Information

Housing Sheet steel, galvanized, standard RAL 7033 color tone, other color tones on request, coated in acrylic resin
Flange Aluminum AlSi1MgMn
Viewing glass Laminated safety glass with UV filter
Cable gland Brass, nickel-plated (standard), A4 stainless steel (offshore)
Indicator scale Aluminum-coated, with UV wide format printing and protective paint
Labeling Black, indicator in red daylight luminous paint
Terminals Min. 0.25 mm2 / max. 2.5 mm2
Float rod Aluminum; optional brass for L ≤ 350 mm
Float Rohacell 110, oil-resistant, temperature-resistant to 160 °C
Dial lettering „MIN“, „+20 °C“, „MAX“ (other lettering possible)
Operating temperature –40 °C - 70 °C; limited temperature range with optional TT- box (see below)
Degree of protection IP55 or IP66 with special cable gland (DIN EN 60529)
Ventilation Ventilation element in the gauge part for avoiding the build up of condensation water
Installation Indoors and outdoors, tropic-proof

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Housing Sheet steel, galvanized, standard RAL 7033 color tone, other color tones on request, coated in acrylic resin
Flange Aluminum AlSi1MgMn
Viewing glass Laminated safety glass with UV filter
Cable gland Brass, nickel-plated (standard), A4 stainless steel (offshore)
Indicator scale Aluminum-coated, with UV wide format printing and protective paint
Labeling Black, indicator in red daylight luminous paint
Terminals Min. 0.25 mm2 / max. 2.5 mm2
Float rod Aluminum; optional brass for L ≤ 350 mm
Float Rohacell 110, oil-resistant, temperature-resistant to 160 °C
Dial lettering „MIN“, „+20 °C“, „MAX“ (other lettering possible)
Operating temperature –40 °C - 70 °C; limited temperature range with optional TT- box (see below)
Degree of protection IP55 or IP66 with special cable gland (DIN EN 60529)
Ventilation Ventilation element in the gauge part for avoiding the build up of condensation water
Installation Indoors and outdoors, tropic-proof

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Please make a selection to display suitable downloads

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