|
Centrifugal
Hand Tachometers
- Measure
speed from 50 to 50,000 RPM ...or from 12.5 to 25,000 FPM
with stock measuring wheels
- Read
instantly in any position and for either direction of rotation
without adjustment
- Guaranteed
accuracy 1 % of full scale
- Self-powered,
no batteries
-
Meet applicable U.S. military specifications
-
Easy to read
-
Long scale
Jones Tachometers have been used for over 50 years.
 The
widespread use and reputation for reliability of Jones instruments
is due to a simple and rugged construction, the result of
Jones' manufacturing skill and specialized experience.
Jones Hand Tachometers are made in many different models with
a wide variety of accessories and speed ranges to meet the
requirements of practically every known application.
Periodic checking of speeds with one of these precision instruments
can often prevent serious breakdowns of motors, generators,
engines and other prime movers, by detecting overload conditions
or improper speed settings. With the peripheral wheel accessory,
Jones Hand Tachometers are useful in measuring surface speeds
of conveyors, drums, and materials being machined.
Jones Hand Tachometers are used in automotive and truck service
stations, power generating plants, textile and paper mills,
labs, machine shops, ships, aircraft, or wherever shafts are
turning.
Advantages Of The Flyball Governor Mechanism
 |
A three-weight
flyball governor, which develops a force up to 8 pounds,
actuates the pointer mechanism for positive pointer
action. Unalterable physical laws of centrifugal force
and gravity assure same dial reading for a particular
speed.
Jones Tachometers are heavy-duty, quality constructed
instruments, unaffected by temperature, moisture, vibration,
electrical currents or magnetic fields.
The governor-indicating mechanism responds instantly
to the slightest change in speed providing consistent,
accurate readings.
All rotating parts operate on ball or oil-less bearings
for long accurate use without attention of any kind.
|
| Specifications
and Options |
| Model
Number |
Ranges
In RPM |
3"
Dial |
4"
Dial |
|
| 4800
* |
4840 |
50-500-5000-50000 |
3200 |
3240 |
50-500-5000 |
| 1600-1
* |
1640-1 |
50-500 |
1600-2 |
1640-2 |
100-1000 |
| 1600-3 |
1640-3 |
200-2000 |
1600-4* |
1640-4 |
300-3000 |
| 1600-5 |
1640-5 |
400-4000 |
1600-6 |
1640-6 |
500-5000 |
| 1600-7* |
1640-7 |
1000-10000 |
| *Meets
MIL-T-16049 Performance Requirements |
|
| Standard
Accessories Supplied |
| Part
No. |
Part
Name |
Model |
| |
|
4800
3200
1600 |
4800
3240
1640 |
| B-21 |
Triangular
Steel Tip |
x |
x |
| B-22 |
Convex
Rubber Tip |
x |
x |
| B-23 |
Concave
Rubber Tip |
x |
x |
| B-25 |
4"
Extension Shaft |
x |
x |
| B-26 |
Small
Convex Rubber Tip |
x |
x |
| B-27 |
Carrying
Case |
|
x |
| B-28 |
1/2"
Circum. Measuring Wheel |
x |
x |
| B-29 |
Carrying
Case |
x |
|
|
| Optional
Accessories-at add'l cost |
| Part
No. |
Part
Name |
| B-24 |
1'
Circum. Measuring Wheel |
| B-30 |
'/4'
Circum. Measuring Wheel |
| B-31 |
18"
Extension Shaft |
| B-32 |
12"
Extension Shaft |
| B-33 |
30"
Extension Shaft |
| B-34 |
Right
Angle Adapter. Fits tachometer drive shaft and accommodates
all tips. |
| B-35 |
3'
Flexible Shaft. Fits tachometer drive shaft and
accommodates all tips. |
| B-36 |
1/10
meter Circum. Measuring Wheel |
|
Jones
Packs A Complete System
Each
instrument comes complete with a selection of drive tips
in a rugged carrying case. Nothing extra to buy.
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|
