Ono Sokki SE-2400 Instruction Manual

DIGITAL ENGINE TACHOMETER
SE-2400
INSTRUCTION MANUAL
Thank you for your selection of the SE-2400 Digital En-
gine Tachometer. To ensure that you get most out of the
instrument, we strongly recommend you read follow the
instruction in this manual carefully.
Copyright c ONO SOKKI CO.,LTD.
2002 All rights reserved.
■ Omission of Test Qualification Issuance
Since this product has been tested through a series of strict inspections
and a complete program of quality control, issuance of the test qualifi-
cation has been omitted.
■ 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 manufacturer, i.e., defects occurred while
the product is used under normal operating conditions according to
descriptions in this manual and notices on the unit label.
3. For free-of-charge repair, contact either your sales representa-
tive 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 trans-
portation
(c)Failures occurring through natural calamities (fires,
earthquakes, flooding, and lightening), environmental dis-
ruption, or abnormal voltage.
* For repairs after the warranty period expired, contact your sales
representative or our sales office nearby.
*Outer appearance and specifications are subject to change without prior notice.
HOME PAGE: http://www.onosokki.co.jp/English/english.htm
ONOSOKKI
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 : overseas@onosokki.co.jp
B00001755 / IM01052502(2) 023(MS)030
GENERAL OPERATING PRECAUTIONS
CAUTION
● Care should be taken not to touch the rotating
parts of the engine when making measurements.
When using the optional external sensor and the optional
AC adaptor, special care is required for the cord not to be
caught in the rotating parts of the engine.
● Care should be taken not to touch the heated parts
of the engine when making measurements.
CAUTION
● Do not bring the SE-2400 in contact with heated
parts ( such as exhaust pipes ) of the engine, as
this may cause damages because it is not
heatproof.
● Do not bring the SE-2400 in contact with an
ignition coil, as this may cause malfunctions or
damages.
● Measurement is not possible on engines with more
than one ignition coil.
● The engine with a fault in ignition systems ( such
as a distributor, a high-tension code and ignition
plug ) cannot be correctly measured.
● Do not apply voltage to the external sensor input
terminal of the SE-2400.
GENERAL DESCRIPTION
1.OUTLINE
The SE-2400 hand-held engine tachometer has its one unit
construction containing the detector, the counter and the dis-
plays rotational speed of a gasoline engine in 1 r/min or 0.01
r/s units simply by making it close to the ignition coil of a
gasoline engine.
2.FEATURES
・ Non-contacting detection enables an easy and safe
measurement.
・ Accurate rotational speed can be obtained in 1 r/min or
0.01 r/s unit.
・ The accessory external sensor ( IP-2800 ) makes it
possible to measure from a distance.
・ With the backlighting function, a display can be assured
even in a dark place.
・ With a recall function, the latest measurement result can
be displayed when the power is switched off.
・ By using the optional external sensor ( VP-201 ), the
number of rotations of diesel-engines can be measured.
・ 2-way powered operation-type AA batteries or the
optional AC adaptor ( PB-703 ).
● Do not use any other AC adaptors but the optinal
PB-703.
Other adaptors may cause malfunctions or damages.
● Do not use the SE-2400 at a location subjected
to sudden temperature changes.
Do not hastily move the SE-2400 from high temperature
to low temperature environments or vice versa to pre-
vent internal condensation which may cause an equip-
ment failure.
● Be careful not to allow water or dust to intrude
inside the cabinet.
Do not use the SE-2400 at a location where it may be
exposed to splashing water, excesive moisture or dust.
CAUTION
● Do not drop or give strong shocks to the SE-2400.
It contains precision electronic components which can
be damaged by dropping or strong shocks.
● If the outer case becomes soiled, wipe it off with
a dry soft cloth or with a cloth slightly dampened
with a neutral detergent.
Avoid volatile organic solvents such as thiners,
benzine and alchol.
3.STANDARD ACCESSARIES
Your package should contain the following materials. Please
make sure that you have received all these items upon un-
packing.
① Digital Engine Tachometer SE-2400 ....................... 1
② External Sensor IP-2800 .......................................... 1
③ Size AA Batteries .................................................... 3
④ Carring Case ............................................................ 1
⑤ Instruction Manual ................................................... 1
1 Digital Engine 3 External Sensor
Tachometer SE-2400 IP-2800
4 Size AA Batteries
4 Carring Case
5 Instruction Manual
NAME AND FUNCTION OF EACH PART
3
IND
SE-2400
q
DIGITAL
ENGINE TACHOMETER
w
① Detection head
This part detects the rotational signal （leakage of mag-
netic flux）when placed close to the ignition coil of an
engine.
② Power switch
By sliding this switch to the ON position, power is ap-
plied to the SE-2400. When you release your finger, power
is switched off. If you slide the switch to the HOLD posi-
tion, it will lock in the on condition even when you re-
move your finger.
③ Indicator
This blinks when the sensor circuit detects the rotation
signal （leakage of magnetic flux）.
④ Sensitivity adjustment volume
Volume for adjusting the signal level.
⑤ UNIT switch
Each time this switch is pressed, the measurement unit
changes from r/s to r/min or vice versa.
⑥ CYLINDER selection switch
The number of cylinder can be selected when the func-
tion selection switch ⑨ is on the SET position.
⑦ RECALL switch
When the power is off, this switch can be pressed to re-
call the latest measured value stored in memory to the
display. When power is on, this switch clears he stored
value.
⑧ External power input terminal
This terminal is for the optional AC adaptor input.
1 The Display
When the function
selection switch is on
the MEAS position.
t e
OVER BATT
OVER BATT
r/s r/min r
r/min
ON
2
HOLD
4 When the function
selection switch is on
the SET position.
RECALL CYL SEL UNIT
ONOSOKKI
y
7 6 5
EXT FUNCT
PICKUP DC IN
SET/MEAS
0 9 8
⑨ Function selection switch
When the function selection switch is on the SET posi-
tion, the number of cylinder can be selected by using the
CYLINDER selection switch, while when the function
selection switch is on the MEAS position, the rpm/rps of
an engine can be measured.
⑩ External sensor input terminal
This is the input terminal for the IP-2800 （accessory）
or the VP-201（option）external sensor.
⑪ Backlighting switch
When this switch is slid into the ON position, the display
backlighting is turned on.
⑫ Battery cover
⑬ Low battery indicator
When the batteries have been discharged and become less
than 3.3 V, mark will be indicated. BATT
⑭ Measurement unit display
The measurement unit will be displayed as r/min or r/s.
The unit will be changed with the UNIT switch.
⑮"OVER" indicator
OVER indicator appears on the display when the rota-
tional speed exceeds 20000 r/min or 333.33 r/s.
⑯ The number of cylinders display
The number of cylinders for 2-cycle engines will be dis-
played on the left side of the display, and that for 4-cycle
engines will be displayed on the right side.