MR MESSKO MTO Instruction manual

MESSKO® MTO
Oil Level Indicator
Technical data
Messko GmbH 2018 15784996-00 EN MESSKO® MTO
Product variants
This technical document contains detailed information about the technical properties of the product. If you
would like to place an order, please use the MESSKO inquiry and order specification, which you can also
find on our website http://www.reinhausen.com below the respective product.
Limit value switch
Without switch
Non-adjustable 15 A switch (MTO-STF160) max. 3 units
For details, see the micro-switch table, page 3
Adjustable 5 A switch (MTO-ST160) max. 3 units
For details, see the micro-switch table, page 3
Switching points Standard: 5° before MIN and 5° before MAX; others available
(For adjustable switches: minimum distance >10° between switches)
Scale marks Standard: MAX...+20°C...MIN
Others available
Scale/shade color Black on white dial face
White on black dial face
Yellow on black dial face
Others available
Electrical connection
Cable screw connection 1 x M25x1.5 1 x M25x1.5 WADI (watertight) available
ANSI plug Cable length available in a variety of lengths
NPT 1/2" internal thread
MIL plug
Optional:
TT30 box with analog output
For details, see the technical data, page 4, and graphics, page 5/6
Analog output 0...1 mA
0...20 mA
4...20 mA (error signal < 3.6 mA)
4...20 mA (error signal > 22 mA)
Digital output RS485 interface with standard ASCII proto-
col available
K1 micro-switch Switching function:
Rising level (NO/NC) or falling level
(NO/NC)
K1 switching point Standard at 20 °C
Others available
Design types
Housing color tone RAL 7033 cement gray
RAL 7038 agate gray
RAL 7032 gravel gray (only for sheet steel housing)
Mounting flange For details, see the technical data, page 3
Standard flange Ø 134 mm [Ø 5.28"], bolt circle Ø 102 mm [Ø 4.02"]
RM* flange Ø 134 mm [Ø 5.28"], bolt circle Ø 101.6 mm [Ø 4.000"]
*) Version for the US market
NAT/DS flange Ø 134 mm [Ø 5.28"], bolt circle Ø 79.38 mm [Ø
3.125"]
Optional Offshore model
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Oil Level Indicator MESSKO® MTO
Messko GmbH 20182 5784996-00 ENMESSKO® MTO
Radial drive type
Angle values of the scale Standard A = 70° (max.) / B = 15° / C = 70° (max.)
Other intermediate values available
Straight design Standard projection 59 mm / 100 mm
Max. 350 mm; others available
Angled design Standard projection 150 mm / 274 mm
Max. 350 mm; others available
Inclination α 15° / 30° / 45° available
Float gauge length Standard 680 mm / 800 mm
Maximum 1000 mm
Can be shortened by the customer
RM* float gauge
*) Version for the US
market
L ≤ 350 mm; brass
(also available for axial)
Axial drive type
Angle values of the scale Standard A = 70° (max.) / B = 15° / C = 70° (max.)
Other intermediate values available
Axial design Standard projection A = 69 mm / A = 268 mm
Max. 350 mm; others available
Installation position depending on the conservator tank
layout
Float gauge design
▪ 1 rolling float gauge (L ≤ 1000 mm)
Option 1: Without
breathing sack
For details, see the
graphic, page 11
Option 2: Upright with
breathing sack
For details, see the
graphic, page 12
for option 2, 3 and 4
▪ 2 rolling float gauges (L ≤ 1000 mm)
▪ 4 rolling float gauges (L > 1000 mm, max.
2500 mm; others by request)
Option 3: Angled with
breathing sack
For details, see the
graphic, page 12
Option 4: Slanting from
below with breathing
sack
For details, see the
graphic, page 13
Angled TT30 box Inclination α = 0° / 15° / 30° / 45° available
For details, see the graphic, page 9
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Oil Level Indicator MESSKO® MTO
Messko GmbH 2018 35784996-00 EN MESSKO® MTO
Technical data
Operating conditions MESSKO® MTO®
Setup Indoors and outdoors, tropic-proof
Operating temperature –40 °C...+70 °C; with TT30 signal converter (optional): –25 °C...+70 °C
Storage temperature –50 °C...+80 °C
Min. permitted oil impermea-
bility
760 kg/m3 at max. operating temperature
Ventilation Ventilation element in the indicator for the prevention of water condensation
Degree of protection IP 55 in accordance with DIN EN 60 529
General MESSKO® MTO®
Materials
Front ring and housing Sheet steel, galvanized: coated RAL 7032/RAL 7033/RAL 7038; coated
with acrylate resin
Stainless steel: coated RAL 7033/RAL 7038, coated with acrylate resin
Retaining flange Aluminum (AlSi1MgMn)
Viewing glass Laminated safety glass with UV filter
Indicator scale Aluminum-coated, with UV wide format printing and protective paint
Labeling Black font
Upon execution in accordance with DIN 42 569 black indicator scale, yel-
low font
MIN...+20°C...MAX; other labeling available
Float rod Aluminum; optional brass for L ≤ 350 mm
Float gauge Rohacell 110, oil-resistant, temperature-resistant up to 160°C
Cable screw connection Nickel-plated brass, M25x1.5
Offshore: 1.4571 stainless steel, M25x1.5
Weight 3.7 kg
Dimensions
Housing scale Ø 173 mm [Ø 6.81"]; height 213 mm [8.39"]; depth 81 mm [3.19"]
Height with TT housing (optional): 322 mm [12.68"]
Flange Standard MTO-ST160 (TT30): Ø 134 mm [Ø 5.28"]; bolt circle Ø 102 mm
[Ø 4.02"] with 4 holes Ø 13 mm [Ø 0.51"]
MTO-STRM standard: Ø 134 mm [Ø 5.28"]; bolt circle Ø 101.6 mm [Ø
4.000"] with 4 holes Ø 11.12 mm [Ø 0.438"]; inner seal groove Ø 66.55 mm
[Ø 2.620"] / outer seal groove Ø 85.85 mm [Ø 3.380"] / depth 3.05 mm
[0.120"]
MTO-STRM NAT/DS: Ø 134 mm [Ø 5.28"]; bolt circle Ø 79.38 mm [Ø
3.125"] with 4 holes Ø 8.73 mm [Ø 0.344"]; inner seal ring Ø 53.98 mm [Ø
2.125"] / outer seal ring Ø 69.85 mm [Ø 2.750"] / depth 1.59 mm [0.063"]
Projection Radial, straight design: 59 mm / 100 mm; max. 350 mm; others available
Radial, angled design (15° / 30° / 45°): 150 mm / 274 mm; max. 350 mm;
others available
Axial: Standard 69 mm / 268 mm; max. 350 mm, others available
Float gauge length Radial: Standard 680 mm / 800 mm; can be shortened by the customer
Axial: 2 rolling float gauges (≤ 1000 mm); 4 rolling float gauges (> 1000
mm)
Connection terminals min. 0.25 mm2 / max. 2.5 mm2
Micro-switch MESSKO® MTO®
Switching function:
Change-over switch for fill
level
NO: Level rising or falling
NC: Level falling or rising
Contact material Silver alloy (AgNi10)
Gold-plated contacts available if current for switching is limited to 100 mA
Isolation voltage 2.5 kV AC, each individual contact grounded
Up to 3 preset micro-switches, only adjustable ex works: MTO-STF160(G)
Breaking capacity: AC: 250 V / 15 A / cosφ = 1; DC: 250 V / 0.25 A / non-
inductive; DC: 12 V / 5 A / non-inductive
Up to 3 freely adjustable micro-switches over scale range: MTO-ST160(G)
For the breaking capacity, see the following table

Oil Level Indicator MESSKO® MTO
Messko GmbH 20184 5784996-00 ENMESSKO® MTO
Switching power (breaking capacity) Utilization category UNIN
For adjustable micro-switches in
accordance with DIN EN
60947-5-1
AC AC-12 230 V 5 A
AC-15 230 V 0.26 A
AC-15 120 V 0.5 A
AC-15 24 V 2 A
DC DC-12 110 V 0.4 A
DC-12 220 V 0.2 A
DC-13 220 V 0.11 A
DC-13 120 V 0.21 A
DC-13 24 V 1.04 A
Technical data TT30 signal converter (optional)
Operating conditions TT30 signal converter
Setup Indoors and outdoors, tropic-proof
Operating temperature –25 °C...70 °C
Storage temperature –50 °C...+80 °C
Ventilation Indirectly via MTO housing
Degree of protection IP 55 in accordance with DIN EN 60 529
Properties TT30 signal converter
Identification MTO-ST(F)160(G)TT
Housing AISi pressure casting; color tone RAL 7033/RAL 7038, coated with acrylate
resin
Weight approx. 700 g
Dimensions L x W x H = 120 x 80 x 60 mm
Cable screw connection 2 x M20x1.5; nickel-plated brass
2 x M20x1.5; 1.4571 stainless steel for offshore applications
Connection terminals min. 0.25 mm2 / max. 2.5 mm2
Connection parameters TT30 signal converter
Sensor Inductive switch
Supply voltage 24 V DC +/- 15%
Power consumption approx. 80 mA
Isolation voltage 0.5 kV, 50/60 Hz, 1 min.; all contacts grounded
Status display Power ON (1x green LED); K1 main switching contact (1x red LED)
Relay contact 1 x changeover contact (K1 main switching contact)
Breaking capacity 5 A/250 V AC, cosφ=1; 0.3 A/250 V DC / non-inductive
max. load resistance RL,MAX = (UB – 7 V) / 20 mA (or / 1 mA)
RL = 850 Ω at UB = 24VDC
Working resistance influ-
ence
≦ 0.01% / 100 Ω
Analog output signal, ad-
justable ex works; 2 wire
circuit
0...1 mA
0...20 mA (error signal > 22 mA)
4...20 mA (error signal < 3.6 mA)
4...20 mA (error signal > 22 mA)
Digital output signal RS485 interface with standard ASCII protocol available

Oil Level Indicator MESSKO® MTO
Messko GmbH 2018 55784996-00 EN MESSKO® MTO
Connection diagram with TT30 signal converter as analog output (optional)
Figure 1: Electrical connection
1 Limit value switch 2 Indicator
3 Front ring with bayonet connector 4 Cover plate (opened from the right)
5 Micro-switch electrical connection 6 TT30 box (only for MTO-TT)
7 Connection for supply voltage (contacts 4, 5) 8 K1 main switching contact relay connection (contacts 1, 2,
3)
– increasing or decreasing NO
– increasing or decreasing NC
9 LED K1 main switching contact – red 10 LED Power – green
11 2 rotary encoder switches for RS485 address (hexadeci-
mal)
12 Optional: RS485 interface (contacts 10, 11, and, if necessa-
ry, contact 9 for the shield)
13 Analog output (contacts 7+, 8–) 14 Grounding the shield (contact 6)

Oil Level Indicator MESSKO® MTO
Messko GmbH 20186 5784996-00 ENMESSKO® MTO
Circuit diagram for remote display (MTO-TT with display device El100 and El100/160)
Figure 2: Circuit diagram for MTO-TT remote display

Oil Level Indicator MESSKO® MTO
Messko GmbH 2018 75784996-00 EN MESSKO® MTO
MTO radial dimensions (Standard)
Figure 3: MTO radial, standard
1 Indicator 2 Ventilation
3 Cover plate 4 Connection terminals
5 Projection 6 Bolt length max. 20 mm
7 Lock nut 8 Flange thickness
9 Float gauge 10 M25x1.5 cable screw connection in accordance with EN
60423
11 M20x1.5 cable screw connection in accordance with EN
60423
12 TOP for flange mount

Oil Level Indicator MESSKO® MTO
Messko GmbH 20188 5784996-00 ENMESSKO® MTO
MTO radial dimensions (sloped version with α = 15°/30°/45°)
Figure 4: MTO radial, sloped
1 Projection 150 + 1 mm 2 Bolt length max. 20 mm
3 Flange thickness 4 Float gauge
5 Lock nut 6 Ventilation
7 Terminal cover 8 M25x1.5 cable screw connection in accordance with EN
60423
9 TOP for flange mount

Oil Level Indicator MESSKO® MTO
Messko GmbH 2018 95784996-00 EN MESSKO® MTO
MTO installation dimensions with TT30 box, sloped
Figure 5: MTO sloped installation dimension
1 Float gauge 2 Lock nut
3 Dimensions dependent on inclination α Inclination

Oil Level Indicator MESSKO® MTO
Messko GmbH 201810 5784996-00 ENMESSKO® MTO
MTO axial dimensions
Figure 6: MTO axial installation dimension
1 Indicator 2 Ventilation
3 Connection terminals 4 Float gauge
5 Projection 6 Bolt length max. 20 mm
7 M25x1.5 cable screw connection in accordance with EN
60423
8 4...20 mA output; M20x1.5 cable screw connection in ac-
cordance with EN 60423
9 TOP for flange mount 10 Lock nut

Oil Level Indicator MESSKO® MTO
Messko GmbH 2018 115784996-00 EN MESSKO® MTO
Installation positions for axial MTO
Option 1 without breathing sack
Figure 7: Option 1 without breathing sack, with associated float gauge

Oil Level Indicator MESSKO® MTO
Messko GmbH 201812 5784996-00 ENMESSKO® MTO
Axial MTO, option 2 and 3, with breathing sack*
Figure 8: Option 2 with upright installation; Option 3 with angled installation; float gauge see also option 4

Oil Level Indicator MESSKO® MTO
Messko GmbH 2018 135784996-00 EN MESSKO® MTO
Axial MTO, option 4, with breathing sack* and float gauge
Figure 9: Option 4 with installation sloping from below; float gauge for options 2, 3, 4

Oil Level Indicator MESSKO® MTO
Messko GmbH 201814 5784996-00 ENMESSKO® MTO
Further types of float gauges
Figure 10: Types of float gauges
1 RM float gauge (Rod: brass) MTO-ST160RM For radial and axial
2 Cubic float gauge (Rod: aluminum) MTO-ST160 For radial
3 Cylindrical float gauge (Rod: aluminum) MTO-ST160 (TT) For radial angled 15° / 30° / 45°

Messko GmbH
Gewerbegebiet An den Drei Hasen
Messko-Platz 1
61440 Oberursel, Germany
[phone]
[phone]
[email protected]
www.reinhausen.com/messko
5784996-00 EN - MESSKO® MTO -
F0355500 - 02/18 - Messko GmbH 2018
THE POWER BEHIND POWER.