VP-201/202
Engine Revolution Detector
Instruction Manual
Warning
Before mounting or removing the sensor, be sure to confirm that the engine has
stopped rotating. Otherwise, your fingers or clothes might be pinched and taken
into the mechanism resulting in serious injuries.
1.GENERAL
This Detector has been designed as the revolution detector specialized for four cylinder diesel
engine and also four cylinder gasoline engine. It is normally fitted to the bolt sections, etc. which
are tightened to the cylinder head section of such engine by means of the magnet built into the
detector itself thereby detecting the engine revolution.
This detector is small and light and, since it is fitted to the engine by means of the magnet, the
handling of it is very simple and easy. Moreover, both the detector and the cable attached to it are
of heat-proof design so that they can be used in the engine room without trouble.
2.SPECIFICATIONS
1) Objective engine
: 4 cylinder diesel engine.
4 cylinder gasoline engine.
2) Detecting system
: Dynamic-electric type vibration detecting system.
3) Detector fitting point
: Bolt section of the engine cylinder head, or the engine fixing
bolts.
4) Detector fitting direction
: Vertical direction.
5) Absorption force for fitting
: In vertical direction;1.5kg (W).
6) Measuring range of revolution
: 500~10,000 r/min (16~333 Hz).
7) Detecting sensitivity
: Over 2V/(m/s) (at RT 10~333 Hz).
8) Output impedance
: Less than 3k
Ω
.
3.GENERAL SPECIFICATIONS
1) Temperature range in use
: 0 ~100 ºC.
2) Preserving temperature range
:- 10 ~120 ºC.
3) Weight (with cable)
: Approx. 110 g.
4) Length of output cable
: Directly attached (Approx. 2.9 m).
5) Outline dimensions
: See the Outer Dimensions shown below.
6) Applicable equipments
: SE-1400 Engine tachometer (only VP-201).
AR-7240 Engine tachometer (only VP-202).
CT-6520 Engine tachometer (only VP-202).
4.HOW TO HANDLE
Fitting of detector and cautions
The detector is fitted simply to the engine (cylinder head section) only by causing the magnet
located at the bottom of the detector to adhere to any magnetic substance of the engine such as iron,
etc.
As this detector is a dynamic-electric detector utilizing magnet, it is necessary to measure the de-
tected value correctly taking care of the following points:
(1) Mount the detector to the horizontal surface of a magnetic part of the engine. (Measurement is
not possible with the detector mounted to the body or other parts of the vehicle.)
(2) Before fitting this detector to a point of the engine, always remove any dirt, oil, etc. from that
point.
(3) Fit the detector vertically (the name plate of the detector should be upward) and fit it to any place
of magnetic substance.
(4) Slacken the cable of the detector to protect it from being pulled. Also, set up the detector always
away from the exhaust pipe and high tension cord. Always keep in mind that the temperature in
use of this detector is 0~100 ºC.
(5) In care the engine revolution is to be checked at the bench with this revolution detector, it is
possible to detect the revolution by fitting this detector to any engine protecting parts only if
such parts is fixed to the engine by bolts.
(6) Do not fit this detector to any electric apparatus. (If such electric apparatus is used, noise may be
picked up and that may cause erroneous measurement).
(Example)
Distributor Ignition coil Ignition plug Dynamometers , etc.
(7) Do not fit detector to any place near the rotating parts of the engine because it is very danger if
the signal cable is caught.
(8) This detector is very unsuitable for any engine of the vehicle. If the actual driving test of such
land driving vehicle is wanted, please install this detector with any adhesive agent.
WORLDWIDE
Ono Sokki Co., Ltd.
1-16-1 Hakusan, Midori-ku,
Yokohama 226-8507, Japan
Phone :045-935-3976
Fax
:045-930-1906
E-mail :[email protected]
ONOSOKKI
*
Outer appearance and specifications are subject to change without prior notice.
HOME PAGE : http://www.onosokki.co.jp/English/english.htm
ONOSOKKI
Up
Up
Up
Vertical
Horizontal
Oblique
Name plate
VP
201
E
N
G
IN
E
TACHO S
E
N
S
O
R
O
N
O
SO
KK
IC
O.
,L
T
D
.
50
φ
22
φ
25
（
3000
）
（
34
）
Plug
Signal cable
（
Chroloplane line
）
VP-201
VP
202
E
N
G
IN
E
TACHO S
E
N
S
O
R
O
N
O
SO
KK
IC
O.
,L
T
D
.
50
φ
22
φ
25
（
2900
） （
24
）
BNC Connnector
Signal cable
（
Chroloplane line
）
VP-202
5.ACCESSORIES:
Instruction manual ................................................. 1 copy.
6.OUTER DIMENSIONS
7.WARRANTY
1. This product is covered by a warranty for a period of one year from the date of purchase.
2. This warranty covers free-of-charge repair for defects judged to be the responsibility of the manu-
facturer, i.e., defects occurred while the product is used under normal operating conditions ac-
cording to descriptions in this manual and notices on the unit label.
3. For free-of-charge repair, contact either your sales representative or our sales office nearby.
4. The following failures will be handled on a fee basis even during the warranty period.
(a) Failures occurring through misuse, mis-operation, or modification.
(b) Failures occurring through mishandling (dropping) or transportation.
(c) Failures occurring through natural calamities (tires, earthquakes, flooding, and lightening},
environmental disruption, or abnormal voltage.
*For repairs after the warranty period expired, contact your sales representative or our sales office
nearby.
