Electromagnetic Detector
MP-900/9000 series
The MP-900/9000 series is a detector that extracts a frequency signal proportional to the rotational speed by placing it close to the tooth tip of the detection gear attached to the rotating shaft. Various types are available including low-priced, general purpose, oil proof and heat resistant types that you can make a choice for your usage. Signal cables (except attached-cable types), extension cables and connectors are sold separately.
Features
- Simple structure, rigid, and designed to be used in harsh environment. Not to be affected by vibration, temperature, oil and dust.
- Non-contact detection makes measurement safe without applying load to rotational body.
- No power supply is required and suitable to the field measurement.
- Variety of lineup: oil proof, high temperature, extra small and long-shape types.
Detection gear
Specification of gears
| a）Detection distance | The narrower the gap, the lower the rotation speed can be detected. |
|---|---|
| b）Shape of gear | Involute gear or equivalent |
| c）Size of gear | The unit module (M) represents the size of gears. Recommended: Module 1 or more, tooth width 4 mm
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| d）Material of detection gear | Materials that are strongly attracted to magnets, that is, ferromagnetic materials, are suitable. Recommended: S45C, SS400, SUS430, FC400, etc. |
MP-001 Specification
| Number of gear teeth | 60 |
|---|---|
| Reference pitch circle diameter | 60 |
| Module | 1 |
| Material | SS400 (surface treatment: trivalent chromate) |
Standard gear teeth of MP-001
Module: 1, number of gear teeth: 60, involute type
Application examples
Rotation Detectors Classification table
MP series Rotation Detector Classification table
（PDF 2.3 MB）
Specifications
| General purpose | General purpose with a direct cable |
Low impedance | Oil proof with a direct cable |
Oil & heat proof (150°C) with a direct cable |
Heat proof
(220°C) with a direct cable |
|
| Model name | MP-9100* | MP-911 | MP-9120* | MP-930 | MP-935 | MP-936 |
| Outer view |  |
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| DC resistance value*1 (Ω) | 850 to 950 | 850 to 950 | 85 to 105 | 850 to 950 | 600 to 700 | 800 to 900 |
| Inductance (mH) [1kHz,T.Y.P] |
300 | 300 | 30 | 300 | 270 | 370 |
| Impedance (Ω) [1 kHz,T.Y.P] |
2k | 2k | 240 | 2k | 1.8k | 2.5k |
| Output voltage (Vp-p) [1 kHz,T.Y.P] *2 |
2.0 or more | 2.0 or more | 2.0 or more | 2.0 or more | 2.0 or more | 2.0 or more |
| Detection frequency range*3/*4 (Hz) | 200 to 35,000 | 200 to 35,000 | 200 to 80,000 | 200 to 35,000 | 300 to 35,000 | 300 to 35,000 |
| Detector gear modules | 1 to 3 | 1 to 3 | 1 to 3 | 1 to 3 | 1 to 3 | 1 to 3 |
| Operating temperature range | −10 to +90 °C | −10 to +90 °C | −10 to +90 °C | −10 to +90 °C | −10 to +150 °C | −10 to +220 °C |
| Resistance to vibration*5 (m/s2) | 196 | 196 | 196 | 196 | 196 | 196 |
| Resistance to shock*6 (m/s2) | 1960 | 1960 | 1960 | 1960 | 1960 | 1960 |
| Mass (g) | 90 | 300 (cable included) |
90 | 100 (cable included) |
100 | 100 |
| Magnetic field around (T) | 0.03 or less | 0.03 or less | 0.03 or less | 0.03 or less | 0.02 or less | 0.02 or less |
| Signal cable | Not provided | Directly attached cable (5 m) M3 crimped terminal |
Not provided | Directly attached cable (0.5 m) BNC |
Directly attached heat resistant cable (1 m) BNC |
Directly attached heat resistant cable (1 m) BNC |
* MP-910 is discontinued, replaced by MP-9100. Some part of the outer dimension has changed. No change in basic specification.
* MP-912 is discontinued, replaced by MP-9120. Some part of the outer dimension has changed. No change in basic specification.
* MP-937 is discontinued.
| Long body | Long body with a direct cable | Small body with a direct cable | Compact with a direct cable |
Ultra compact with a direct cable |
For small modules | For middle modules | |
| Model name | MP-940A* | MP-954 | MP-950 | MP-962 | MP-992 | MP-9200* | MP-963 |
| Outer view |  |
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| DC resistance value*1 (Ω) | 500 to 600 | 2.1 to 2.3k | 2.1 to 2.3k | 1.25k to 1.45k | 160 to 190 | 850 to 950 | 3.7 to 4k |
| Inductance (mH) [1kHz,T.Y.P] |
270 | 400 | 400 | 210 | 25 | 300 | 1800 |
| Impedance (Ω) [1kHz,T.Y.P] |
1.8k | 3.5k | 3.5k | 2.1k | 250 | 2k | 16k |
| Output voltage
(Vp-p) [1kHz,T.Y.P]*2 |
2.0 or more | 2.0 or more | 2.0 or more | 1.5 or more | 0.5 or more | 0.6 or more (M=0.75) |
2.5 or more |
| Detection frequency range*3/*4 (Hz) | 300 to 35,000 | 300 to 35,000 | 300 to 35,000 | 400 to 35,000 | 400 to 100,000 | 300 to 35,000 | 45 to 15,000 |
| Detector gear modules | 1 to 3 | 1 to 3 | 1 to 3 | 1 to 3 | 1 to 3 | 0.5 to 1 | 3 to 10 |
| Operating temperature range | −10 to +90 °C | −10 to +90 °C | −10 to +90 °C | −10 to +90 °C | −10 to +120 °C | −10 to +90 °C | −10 to +90 °C |
| Resistance to vibration*5 (m/s2) | 196 | 196 | 196 | 196 | 196 | 196 | 147 |
| Resistance to shock*6 (m/s2) | 1960 | 1960 | 1960 | 1960 | 1960 | 1960 | 1960 |
| Mass (g) | 150 | 90 | 70 | 50 | 3 | 90 | 200 |
| Magnetic field around (T) | 0.01 or less | 0.01 or less | 0.01 or less | 0.005 or less | 0.001 or less | 0.005 or less | 0.03 or less |
| Signal cable | Not provided | Directly attached cable (0.5m)BNC | Directly attached cable (0.5m)BNC | Directly attached cable (0.5m)BNC | Directly attached cable (0.5m)FEP wire | Not provided | Not provided |
* MP-940 is discontinued,replaced by MP-940A.
* MP-920 is discontinued, replaced by MP-9200. Some part of the outer dimension has chanbed. No change in basic specifications.
* MP-967 is discontinued.
* 1 :Temperature coefficient of DC load value is 0.4 %/ °C.
* 2 :Load resistance 10 kΩ, M=1, gap=0.5mm (As for MP-963； load resistance 10 kΩ, M=3, gap=1.5mm)
* 3 :The indicated value of frequency (Hz) corresponds to that of revolution speed (r/min) when a detection gear with 60 P/R is used.
[Frequency(Hz)= Rotation speed(r/min) ÷ 60 (s)×60 (P/R)]
* 4 :MP- 001 is used. (Ono Sokki Standard gear teeth) (As for MP-963, a gear with M=3 is used.)
* 5 :JIS E 4031, five types, 40Hz, 2 hours for each direction of X, Y. Four hours for Z direction.
* 6 :Three times for each direction of X, Y, and Z.
Related information
Last update : 2024/03/13