Ono Sokki HR-6800, MP-5350 Instruction Manual

Digital Tachometer (For high speed)

HR-6800

Electromagnetic Detector

MP-5350

(The sensor is not included in a price of HR-6800

)

Instruction Manual (Basic Operations)

Thank you for your selection of the HR-6800 Digital Ta­chometer.
To ensure the performance of the HR-6800, please read
this manual thoroughly.

Warnings and Cautions
In this document precautions are classified into two cat­egories: WARNING and CAUTION. This depends on the
degree of danger or damage possible if the precaution
is ignored and the product is used incorrectly.

1 Power switch

Turns the power ON or OFF.

2 Display

Displays the measurement value and various settings.

3 Input connector

Connected with the Detector with the supplied connection
cable.

4 RECALL & ↑ switch

Used for memory call during measurement and numeri­cal input in the parameter setup mode.

5 MENU switch

Used to switch between the measurement mode and the
parameter setup mode.
The lock mode can be set and canceled by pressing this
switch for 3 seconds or longer.

6 MEMORY & → switch

Used for memory writing during measurement and nu­merical digit shift in the parameter setup mode.

7 MODE & NEXT switch

Used for mode change during measurement and item
selection in the parameter setup mode.

8 Indicator (input signal indicator)

When the detector circuit detects a rotational signal, the
LED indicator lights up.

9 Type A/B selector switch

Used to select Type A or B.

0 Trigger level adjustment volume

Volume for adjusting the trigger level.

q Tripod mounting hole

Used to mount a tripod.

w Battery cover

e Connector cover

Cover for the power inlet and output connectors.

r DC power input

Input terminal for connecting the dedicated AC adapter.
(when the dedicated AC adapter and dry batteries are
used together, the AC adapter is given priority.)

t Analog output

Terminal for connection with a recorder, etc. through
the optional AX-501 cord.

y Pulse output

Terminal for connection with an FFT analyzer, etc.
through the optional AX-501 cord.

u CONDITION display

Displays the measurement mode, LOW battery, and
errors.

i MAIN display

Displays measurement values, selections, settings, etc.

o SUB display

Displays memory addresses, settings, etc.

p UNIT display

Multiplies the measured value in the MAIN display by
ten for readout in "r/min."

a Detecting element

Bring the detecting element at the end of the Detector
close to the body of revolution under measurement.

s Output connector

Connected with the HR-6800 unit using the supplied
connection cable.

1.Overview

The HR-6800 Digital Tachometer is a handy tachometer with
built-in batteries integrating the measurement unit and dis­play unit. It is designed for measurement of bodies of revolu­tion for dental instruments, textile machines, and general­purpose high-speed machine tools, etc.
With the use a dedicated Detector, the HR-6800 makes it
possible to measure the rotational speed of the body of revo­lution under measurement.
Up to 20 measurement data items can be stored in the HR­6800 unit using the memory function, which is useful for sub­sequent confirmation.
The display unit displays the rotational speed (x10 r/min) with
a 5-digit number.
The equipment is provided with an analog output (inter­changeable with a monitor output) and a pulse output. The
analog output is used for recording with a data recorder, etc.,
and the pulse output for tracking analysis with an FFT ana-

lyzer.

2.Features

・ Measurement from low to high rotational speeds (100 to

999,990 r/min)

・ High sensitivity
・ MAX and MIN modes for displaying the maximum and

minimum values

・ Convenient memory function (up to 20 items can be

memorized) for confirmation of measurement results

・ Over mark function for indicating measurement values

exceeding a specified value

・ Analog output, sensor signal monitor output, and pulse

output

・ Type AAA batteries and AC adapter commonly used
・ Back light function which is convenient for use in dark

places

3.Measurement Principle

The Detector incorporates a permanent magnet and a de­tection coil to detect the rotational speed of an object under
measurement based on the principle of electromagnetic in-

duction.

4.Unpacking

When you unpack the unit, make sure that you have all the
following:

【HR-6800】

① HR-6800 main unit.................................................. x1

② Type AAA alkaline dry battery ................................ x4

③ Instruction manual ................ x2 (2 different manuals)

④ Carrying case ......................................................... x1

⑤ MI-0301 Tripod attachment adapter ........................ x1

【MP-5350】

(The sensor is not included in a price of HR-6800

)

① Detector (MP-5350) ................................................ x1

② Connection cable (1m) ........................................... x1

Overview

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1 HR-6800 main unit ② Type AAA

alkaline dry batteries

3 Instruction manuals 4 Carrying case

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HR-6800

InstructionManual(FunctionReference)

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InstructionManual(BasicOperations)

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⑤ Tripod attachment adapter (MI-0301)

Name and Function of Each SectionObserve the Following Points before Use

CAUTION

● Do not drop the equipment or apply excessive shock to

it.
Since this equipment incorporates high-precision elec­tronic parts, be careful not to drop it or apply strong shock.

● Wipe dirt off using a dry cloth or a cloth dampened with

neutral detergent and squeezed firmly. Do not use vola­tile oils (thinner or benzine) or alcohols.

● Be sure to use the supplied connection cables.

Using cables other than the supplied one may make it
impossible to obtain specified performance or, in the worst
case, cause damage to the equipment.

● Measurement in strong magnetic field or near an AC line

is not possible.
Since this equipment has a high input sensitivity to en­able measurement with a minute signal, measurement in

strong magnetic field or near an AC line is not possible.

WARNING

● Perform measurement using enough care with the target

under measurement rotating at high speeds.
Be careful not to allow connection cables to be caught by
rotating sections.

● When using an AC adapter, be sure to use a dedicated

AC adapter (option).
Using adapters other than the optional one may cause

failure.

● Avoid using the equipment in places subject to rapid tem-

perature change.
Do not move the equipment rapidly from a hot place to a
cold one or vice versa. Condensation can form inside the
unit which may cause failure.

● Be careful not to get water, oil, dust, or foreign materials

inside the unit.
Do not use the equipment in places where you may get
water or oil or places which are humid or dusty.

1 MP-5350 Detector ② Connection cable

Copyright©ONOSOKKICO.,LTD.
2007Allrightsreserved.

■Omission of Issuance of Certificate

This product has been tested under strict inspections for
correct operation before shipment. Please note that the
issuance of certificate is omitted.

■Warranty

1. This product is covered by a warranty for a period of one
year from the date of delivery.

2. This warranty covers free-of-charge repair during the
warranty period for defects occurred while the product is
used under correct operating conditions accordi ng to de­scriptions in this manual and notices on the unit label.

3. For free-of-charge repair during the warranty period, con­tact your dealer or your nearest Ono Sokki sales office
nearby.

4. Even during the warranty period, the following failures
will be handled on a fee basis.
(a) Failures or damages occurring through misuse,

misoperation, repairing without ONO SOKKI’S ap­proval.

(b) Failures or damages occurring through mishandling

(dropping) during transportation after purchase.

(c) Failures or damages occurring by an Act of God (fires,

earthquakes, flooding, and lightening), environmen­tal disruption, or abnormal voltage.

(d) Replenishmen t of expendable supplies, spare par ts,

and accessories.

WARNING

CAUTION

Thissymbolisusedtoindicateprecautions
wherethereisariskofdeathorserious
personalinjurytotheoperatoriftheproductis



handledincorrectly.
Thissymbolisusedtoindicateprecautions

wherethereisariskofsomepersonalinjury
totheoperatororonlymaterialdamagetothe



productiftheproductishandledincorrectly.

This guarantee covers only the performance of the product itself only.
All inconvenience by the trouble of this product is not included.
*Outer appearance and specifications are subject to change without prior notice.

HOME PAGE: http://www.onosokki.co.jp/English/english.htm

WORLDWIDE

ONO SOKKI CO., LTD.
1-16-1 Hakusan, Midori-ku,
Yokohama 226-8507, Japan
Phone : [phone]
Fax : [phone]
E-mail : [e-mail]

B00002033 / IM07062203(2) 081(MS)020

1.Power Supply

The HR-6800 operates on four Type AAA batteries or the
dedicated AC adapter (option: PB-7080).

If the batteries are consumed and the LOW mark "

"
appears, replace them with new ones. Be sure to replace

all the four batteries at the same time.

Battery replacement procedure

①While pushing lightly the two (anti-slip) slots of the

battery cover with your finger, slide it to remove.

②Put the batteries properly in the battery compartment

with the correct polarity (+/-).

③Put the battery cover.

2.MI-0301 Tripod Attachment Adapter

With the use of the supplied tripod attachment adapter,
the Detector can be installed using a commercially avail-

able tripod.

Attach the Detector to and detach it from the tripod attach­ment adapter as shown below.

1.Measurement Section

Objects under measurement: Bodies of revolution for dental in-

struments
Bodies of revolution for textile ma­chines
Bodies of revolution for high-speed
machine tools, etc.

* The object under measurement needs

to be polarized.
Operation method : Periodic operation method
Measuring time : 50 ms + Input signal 10-period time

or less
Input frequency range : 1.6 Hz to 16.666 kHz
Measuring unit : 10 r/min (rotational speed)
Measuring range : 100 to 999990 r/min (selectable)

Measurement accuracy : Display value x (±0.02 %) ±1 count
Over range function : If the measurement value exceeds the

display range, over range " "

appears.
Upper limit rotation warning function: If the rotational speed ex-

ceeds a preset upper limit, upper limit

warning " " appears.

Trigger adjustment function: Can be adjusted using the rotary

volume on the right-hand side face of

the HR-6800 unit.

2.Detecting Element

(The sensor is not included in a price of HR-6800

)

Detection method : Electromagnetic induction
DC resistance : 25 to 40 Ω [20 ˚C]
Operating temperature range: 0 ˚C to +40 ˚C
Storage temperature range: -10 ˚C to +50 ˚C
Resistance to vibration : 19.6 m/s

2

Resistance to shock : 490 m/s

2

Mass : About 50 g (detecting element only)

Dimensions : 107 x ø14 mm

3.Display Section

Number of display digits: 5 digits
Character height : 10.2 mm
Indicator : 7-segment LCD with back light

Refresh time : About 1 s/0.5 s selectable

4.Measurement Mode

MAX (peak hold) : Displays the maximum value during mea-

surement.

MIN (peak hold) : Displays the minimum value during mea-

surement.
Others : Displays the current measurement value.
Memory function : Up t o 20 measurement values can be

memorized each time the memory switch is

pressed. Since these values are stored in

non-volatile memory, they are retained even

after the power is turned OFF.

Specifications

5.Analog Output Section

【REVO】

Output contents : Output to the display value of rotational

speed.

Voltage range : 0 to F.S./0 to 1 V

(The full scale can be set with a setup

parameter.)
Conversion method : 10-bit D/A conversion method
Linearity : ± 1 % of F.S.
Output refresh time : 50 ms + Input signal 10-period time or

less
Temperature stability: ± 0.05 % of F.S./˚C (ZERO & SPAN)
Setup error : ±0.5 % of F.S. (adjustment setup error

at the time of shipment, ZERO & SPAN)
Load resistance : 100 kΩ or more

Output connector : Super mini jack (ø2.5)

【SIG】

Output contents : Analog output for monitoring after wave-

form shaping of the sensor signal (be-

fore pulse waveform conversion)
Load resistance : 100 kΩ or more
Output connector : Super mini jack (ø2.5/Commonly used

with REVO output)

6.Pulse Output Section

Output timing : Outputs one pulse for each signal de-

tection.

(For bodies of revolution with one out-

put per rotation, outputs one pulse per

rotation.)
Output voltage : Hi level=4.5 V or higher

Lo level=0.5 V or lower
Output logic : Positive logic pulse
Load resistance : 100 kΩ or more

Output connector : Super mini jack (ø2.5)

7.General Specifications

Power supply : Type AAA dry battery (x4) or dedi-

cated AC adapter (PB-7080)

Continuous operating time: About 13 hours (back light OFF)

About 8 hours (back light ON)
(When alkaline batteries are used at

20 ˚C)
Battery LOW display : Lights up at about 4.5 V.
Operating temperature range: 0 ˚C to +40 ˚C
Storage temperature range: -10 ˚C to +50 ˚C
Operating humidity range: +35 to +85 %RH (without conden-

sation)
Storage humidity range : +35 to +85 %RH (without conden-

sation)
Mass : About 230 g (HR-6800 unit only, bat-

teries not included)
Dimensions : 189.5 x 66.0 x 47.5 mm (HR-6800

unit)

Before Use

Battery polarity display

4.Measurement

①Connect the HR-6800 unit with the Detector using the

supplied cable.

②Select Type A or B using the Type selector switch on the

side face.

③Slide the power switch to turn the power ON.
④Set the number of pulses per rotation (P/R) and other

parameters according to the object under measurement.

⑤Bring the Detector close to the object under measurement.

Bring the end or its side face of the Detector to the body
of revolution as shown below.

【Detection at the end】

【Detection at side face of the end】

⑥During measurement, turn the trigger level adjustment

volume so that the indicator blinks stably and the rotational
speed be displayed. Since the center value of the trigger
level adjustment volume is 5, gradually increase or
decrease the trigger level from 5 to adjust the trigger level.

⑦Perform measurement.

TRIG LEVEL

5

Options Storage

The storage temperature range of the HR-6800 is -10˚C

to +50˚C. When you store it, avoid locations where the

temperature is extremely high or low or the humidity is

high. Store it in a place which is well-ventilated and not

exposed to direct sunlight. If you do not use it for a pro-

longed period of time, be sure to remove the batteries to

prevent accident caused by battery leakage, etc.

①AX-501: Output cord
②

PB-7080: AC adapter

(IN: 100 to 120 VAC, OUT: 6 VDC)

Body of revolution
under measurement

5〜20 mm

3.Measurable Bodies of Revolution

The HR-6800 enables measurement of the following bodies

of revolution:

・ A body of revolution with a magnet embedded

Most stabilized measurement is possible.

This system is recommended for a drill for rotation test.

・ A body of revolution partially polarized

A magnet is rubbed on a part of the body of revolution for

polarization before measurement. If the magnetic force

weakens with time, polarization is performed again.

・ A body of revolution with a bumpy shape

Since a magnet is embedded in the Detector of the HR-

6800, whether a body of revolution can be measured

depends on its shape. However, depending on the material

and shape of the body of revolution, a detected signal may

become minute making detection of rotation difficult.

Therefore, if possible, magnet-based detection is

recommended.

Note:Since the Detector has frequency characteristics,

it needs strong magnetic force particularly when

measuring low rotational speed.

Refer to the following rough standard of magnetic

force:

100 r/min: 10 mT or more

10000 r/min: 5 mT or more

100000 r/min: 1 mT or more

Note:Measurement is not possible in places where

strong magnetic field is present around the mea-

suring point.

RANGE

Hi
Lo

−

Type selection

A

B

10,000 to 999,990 r/min

100 to 50,000 r/min

200,000 to 999,990 r/min

Rotational speed range

* When the number of pulses is set to "1"
* Generally, use Type A.

Attachment Detachment

10

5〜20 mm

Applicable Standards

①CE Marking

EN61326

EN61010-1

: This mark declares the compliance with

EC instructions.