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
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Optional outputs: RS485 Modbus RTU or 4...20 mA
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Optional installation with angle of inclination (15°; 30°; 45°)
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Laminated composite safety glass with UV filter
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Functional reliability and high accuracy due to state-of-the-art measuring technology
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Freely adjustable limit switches over the scale range with up to 7 contacts with Modbus interface
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Easy integration into ETOS® – Embedded Transformer Operating System
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Separation of sensor and display, element with magnetic coupling
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No readjustment or recalibration required during the entire service life
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 (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 (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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