Magnetic induction tachometers ТМ
Tachometers are designed to continuously measure the rotation speed of machine and mechanism parts.
Tachometers are connected via a spring-load coupling when rigidly attached to the object or via a flexible shaft when attached to the object by means of shock absorbers.
General specifications
Allowable basic error of the tachometer, %, maximum:
- within the operating measuring range ±1;
- in the remaining part of the scale (for tachometers with right/left zero – from the upper range limit; for tachometers with center-zero scale – from the sum of upper range limits) ±1.5.
Method of tachometer attachment to measurement object:
- using a spring-loaded coupling with a shank bore diameter – 25 or 40 mm;
- using a flexible shaft.
Direction of tachometer drive shaft rotation:
- for tachometers with right/left zero – left- or right-handed (the left-handed rotation of the tachometer drive shaft means counterclockwise rotation, the right-handed rotation – clockwise rotation when viewing the tachometer from the drive shaft side);
- for tachometers with center-zero scale – two-way.
Tachometer climatic versions:
- У3 – for operation at a temperature from minus 60 to plus 60°С and relative humidity up to 80%;
- T3 – for operation at a temperature from minus 10 to plus 55°С and relative humidity up to 80%.
Tachometer weight (with no regard to the flexible shaft) is 1.4 kg as maximum.
|
Tachometer version |
Measuring range, rpm |
Operating measuring range, rpm |
Tachometer factor |
Maximum rotation speed of the tachometer drive shaft, |
Scale type |
Division value, rpm |
|
ТМ 0,5 |
25–500 |
150–500 |
2:1, 4:1 |
1,000, 2,000 |
right/left zero |
5 |
|
center-zero |
10 |
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|
ТМ 0,75 |
40–750 |
250–750 |
2:1, 4:1 |
1,500. 3,000 |
right/left zero |
10 |
|
ТМ 1 |
50–1,000 |
300–1,000 |
1:1, 2:1 |
1,000, 2,000 |
right/left zero |
10 |
|
center-zero |
20 |
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|
ТМ 1,5 |
75–1,500 |
450–1,500 |
1:1, 2:1 |
1,500, 3,000 |
right/left zero |
20 |
|
ТМ 2 |
100–2,000 |
600–2,000 |
1:1, 1:2 |
2,000, 1,000 |
right/left zero |
20 |
|
center-zero |
50 |
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|
ТМ 2,5 |
125–2,500 |
750–2,500 |
1:1 |
2,500 |
right/left zero |
25 |
|
ТМ 3 |
150–3,000 |
900–3,000 |
1:1 |
3,000 |
right/left zero |
50 |
|
ТМ 4 |
200–4,000 |
1,200–4,000 |
1:1, 1:2, 1:4 |
4,000, 2,000, 1,000 |
right/left zero |
50 |
|
center-zero |
100 |
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|
ТМ 6 |
300–6,000 |
1,800–6,000 |
1:3 |
2,000 |
right/left zero |
50 |
|
center-zero |
200 |
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|
ТМ 8 |
400–8,000 |
2,400–8,000 |
1:4 |
2,000 |
right/left zero |
100 |
|
center-zero |
200 |
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|
ТМ 12 |
600–12,000 |
3,600–12,000 |
1:6 |
2,000 |
right/left zero |
100 |
|
center-zero |
400 |
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|
ТМ 16 |
800–16,000 |
4,800–16,000 |
1:8 |
2,000 |
right/left zero |
200 |
|
center-zero |
400 |
Notes:
- The scale of magnetic induction tachometer ТМ 2,5 is calibrated in percent.
- Tachometer factor means a ratio of the input rotation speed to the rotation speed indicated by the tachometer. –page 88 of the Catalog
Ordering
When ordering, it is required to specify the following:
- Description
- Version
- Tachometer factor
- Scale type
- Shank bore diameter
- Method of attachment to measurement object
- Location and direction of drive shaft rotation
- Flexible shaft length
- Climatic version designation
- ТУ designation
Example of an order
With an upper range limit of 2,000 rpm, 190 mm long flexible shaft, right-handed direction of tachometer drive shaft rotation, right/left zero scale, tachometer factor 1:1, climatic version У3, with the drive shaft in the down position:
“Tachometer ТМ2-1П.190.1:1.У3. shaft down ТУ 25.02.110279-77”;
the same for left-handed direction of tachometer drive shaft rotation:
“Tachometer ТМ2-1Л.190.1:1.У3. shaft down ТУ 25.02.110279-77”.
With an upper range limit of 4,000 rpm, spring-loaded coupling, shank bore diameter of 25 mm, center-zero scale, tachometer factor 1:4, climatic version У3, with the drive shaft positioned to the right:
“Tachometer ТМ4-0.1:4.У3.25. shaft to the right ТУ 25.02.110279-77”. – page 89 of the Catalog
Designations
- П (Л) – right-hand (left-hand) direction of tachometer drive shaft rotation;
- 1 – flexible shaft;
- 0 – center-zero scale.
Overall and attachment dimensions
