JFE Advantech MK-750ST-E User manual

Instruction manual
for
Gas Leak Viewer
MK-750ST-E
Thank you very much for purchasing our Gas leak viewer MK-750ST-E.
This operation manual contains essential information and tips for proper
and effective use of the instrument. Please read this manual thoroughly
before commencing operation and keep the manual in a secure place for
future reference.

i
Introduction
Thank you very much for purchasing the Gas Leak Viewer MK-750ST-E (hereinafter “the
instrument”). Read all cautions for safety and instructions in this manual in order to ensure safe and
proper use of the instrument, and to avoid danger of harming yourself and others and risk of property
damage.
●Before commencing use, please understand that JFE Advantech will not take any responsibilities
for any damage or malfunction caused by the instrument regardless of correct or incorrect use of
it, except for those cases which can be legally proven.
●We will not take any responsibilities for missing data caused by malfunction, repair, low battery
level, or others. We recommend to take backup data on multiple storage media. Furthermore, we
will not take any responsibilities for loss of memory and/or damage to them whatever the reason
is.
●Specifications and functions of this product, including accessories, are subject to change without
notice for the purposes of continual improvement.
●The contents of this Instruction manual are subject to change without notice.
●Please contact us if you find any errors in this manual, or find its contents difficult to understand.
●We will not take any responsibilities or accept any claims from a third party for damage or
financial losses resulting from the use of this Instruction manual or the instrument.
●Please contact us for replacement in case your Instruction manual was incorrectly bound or
incomplete.
Please contact us or your local dealer in case you find any malfunction or have any trouble with your
instrument.
We will repair as provided for on the Warranty Card.

ii
Safety cautions
Some important points to be observed are listed below to ensure correct use of the instrument to avoid
any danger of harming yourself or others and to avoid any risk of property damage. Please carefully
read all to make sure for correct use of the instrument.
Types of icon
“Point to be careful about”
“Actions that must be taken”
“Actions that must be avoided”
Meanings of icon
Unspecified general cautions, warnings, and dangers.
Disconnection of power plug from an outlet.
Other general actions that must be taken.
Do not disassemble.
Do not wet or expose to moisture.
Do not touch with wet hands.
Other general actions that must be avoided.

iii
●Things to be kept in mind for using the instrument
Improper use of the instrument on ignoring this caution may raise serious risk of
heavy injury or death.
Pay attention to abnormal conditions.
・Using the instrument under abnormal conditions such as smoking and/or making
strange smell may cause fire or electric shock. Turn off the instrument immediately
and remove rechargeable battery from the instrument.
・Be sure yourself and the instrument is out of its range in case you are measuring
on a moving target.
・Do not operate the instrument under thunderstorm.
Avoid water and extraneous substance
・In case extraneous substance, such as metal piece, water, or any kind of liquid, gets
inside the instrument, turn the power off and take the battery out. Then, contact us
or local dealer in such case.
Do not drop the instrument
・In case the instrument was dropped or applied strong impact, please turn the power
off and take the battery out. Then, contact us or your local dealer. Continuing to
use after such incident may cause fire or electrical shock.
・To prevent from dropping the instrument, please take precautions such as to use a
strap.
Do not disassemble.
・Do not disassemble or modify the instrument. It may cause fire, electrical shock,
or injury.
Warning

iv
●Things to be kept in mind for using the instrument (cont.)
Improper use of the instrument ignoring this caution may cause human injury or
property damage.
Memory protection
・Make sure to take backup of data in internal memory on a PC or others. Data on SD
card may get corrupted or be lost due to deterioration or other reasons. Also, data may
be lost by malfunction or when repaired.
Storage area
・Do not place/store the instrument in humid or dusty place. It may cause fire or electrical
shock.
・Do not place/store the instrument on or by a cooking counter or a humidifier. Fumes
and steam may cause fire or electrical shock.
Do not leave the instrument in closed location while its power turned ON
・The instrument temperature increases due to the heat created by electrical parts inside
when it is turned ON. Leaving the instrument for long period of time in closed location,
such as inside of a carrying case, heat dissipation may interfered causing the
instrument temperature to increase. The instrument will turn its power OFF
automatically in case its internal temperature exceeds certain degree.
・To avoid overheating by leaving the instrument with its power turned ON for long
period of time, we recommend you to have Automatic Power-OFF function activated.
Furthermore, the default setting for Automatic Power-OFF is “5 min”.
Do not place/store it on an unstable place
・Do not place/store the instrument on a unstable or high place. It may drop and cause
injury or malfunction of the instrument.
Operation
・Do not operate or look at the screen while moving. May cause to trip or fall.
Caution

v
●Things to be kept in mind for AC adapter and battery charger
Improper use of the instrument on ignoring this caution may raise serious risk of
heavy injury or death.
・Only use with specified power voltage, and never use multiple outlet cord. It may
cause fire or electric shock.
・Do not disassemble or modify AC adapter or battery charger.
・Do not touch AC adapter or battery charger with wet hands. It may cause fire or
electric shock.
・Use only genuine AC adapter or battery charger to avoid risk of fire or
malfunction.
・In case you notice smoking and/or strange smell from the charger, please unplug
the charger from outlet. Then, contact us or local dealer in such case.
Improper use of the instrument ignoring this caution may cause injury or property
damage.
・Hold head section of plug-in when you unplug the charger.
・Remove battery pack from a charger after completion of recharging.
Warning
Caution

vi
●Things to be kept in mind for battery pack
Improper use of the instrument on ignoring this caution may cause heavy injury
or death.
・Do not disassemble or modify a rechargeable battery pack. Rechargeable batteries
have built-in mechanism for safety. Loosing this mechanism by disassembling or
modifying may cause injury from fire, overheat, and or explosion.
・Avoid short circuiting. Do not store or carry a battery pack with metal objects
including neckless and hair-pin. Contacting with metal object may cause short-
circuiting that provoke over-heat to start a fire or explosion that may lead to injury.
・Do not recharge at a heated place such as where close to a heater, under direct
sunlight, or in a car on a sunny day. If a battery pack becomes excessively hot,
built-in safety mechanism becomes effective and stop recharging and/or may
cause fire or explosion provoked by abnormal chemical reaction.
・Do not strike a battery pack with a hammer, prick with a nail, step on, or throw. It
may cause short-circuiting leading to a fire or malfunction.
・Do not use a damaged or deformed battery pack. It may cause fire, over-heating,
or explosion leading to injury.
・Do not use our genuine battery pack with other instruments.
It may cause abnormal electric flow leading to malfunctioning, a fire, or explosion.
・In case you confirm strange smell or leakage from a battery pack, please take it off
from the instrument while making sure it is away from a fire. It may ignite a fire
or explosion.
Danger

vii
●Things to be kept in mind for battery pack(cont.)
Improper use of the instrument on ignoring this caution may raise serious risk of
heavy injury or death.
・Do not heat a battery pack, or throw it into a fire, fresh water, or sea water. It may
damage its safety mechanism, destroy protection, or ignite to electrolyte causing
fire or explosion leading to injury.
・In case leaked liquid from a battery pack gets into your eye, rinse with clean water
and consult with your local doctor immediately.
・In case you cannot fully charge your battery pack in designated time length, stop
recharging. It may cause fire, overheating, or explosion leading to injury.
・Be sure to use our genuine recharger for charging.
・Improper use of the instrument ignoring this caution may cause injury or property
damage.
・Remove a battery pack from the instrument in case you are not planning to use for
3 days or more.
・Improper use of a battery pack may cause leakage of electrolyte, explosion, or fire
leading to injury or damaging the surrounding objects.
・Use only our genuine battery pack and never others.
Warning
Caution

viii
●Precautions for use
MK-750ST-E is a precision instrument. Incorrect use or rough handling may cause malfunction or data
loss. Read instruction below and use properly.
・Do not continue to use with low battery.
It may cause data loss or file corruption.
・Immediately recharge when your battery pack charge level becomes low.
・Do not leave a low battery level battery pack attached to the instrument for a long
period of time.
・Use the instrument under following conditions.
・Temperature range while using: between -5 and 55℃.
・Temperature range while charging: between 0 and 40℃.
・Humidity level 85%RH or less, and no condensation.
Using out of the ranges above may cause malfunction.
・Avoid operating the instrument in the following locations.
Any of the followings may cause malfunction or damage the instrument.
・Location where water may splash or under rainy weather.
・Location where static tends to be generated.
・Location where extremely high or low in temperature.
・Location with high humidity.
・Location with rapid change in temperature.
・Location with high possibility of getting in contact with acid or alkaline.
・Do not place heavy object on the instrument.
・Do not drop the instrument or apply strong impact.
・Do not disassemble or modify the instrument.
We will not warranty the instrument even if it is still in its warranty period if
disassembled or modified.
・Do not put foreign matters into connectors or battery holder.
・When installing the instrument onto a tripod using platform attachment screws,
make sure to use those are strong enough. Also, be sure to firmly attach to the
tripod.
・Platform attachment screws are made assuming to be used with a tripod. Do not
use on a moving location.
Caution
Caution

Table of contents
1. Outline............................................................................................................................. 1
2. Preparation before use ..................................................................................................... 2
2.1. Enclosed items ........................................................................................................... 2
2.2. Description ................................................................................................................ 3
2.3. How to handle a battery pack....................................................................................... 4
2.3.1. How to charge a battery pack ............................................................................... 4
2.3.2. How to attach a battery pack ................................................................................ 6
2.3.3. How to detach a battery pack ............................................................................... 7
2.4. How to setup calendar information............................................................................... 7
2.5. How to attach a wrist strap .......................................................................................... 7
2.6. How to attach a neck strap (Optional)........................................................................... 8
3. How to operate............................................................................................................... 10
3.1. How to turn the power ON/OFF ................................................................................ 10
3.2. How to check your battery charged level .....................................................................11
4. Menu/Configuration screen.............................................................................................11
4.1. Menu........................................................................................................................11
4.2. Displaying saved image (Image Check)...................................................................... 12
4.3. Leak amount display (Leak Setting)........................................................................... 14
4.3.1. Sound pressure peak value / Leak amount display setting (Peak Value Window) .... 14
4.3.2. Leak amount display unit setting (Leak Unit) ...................................................... 14
4.4. Basic setting (Basic Setting) ...................................................................................... 15
4.4.1. Automatic Power-OFF setting (Automatic Power-off Function)............................ 15
4.4.2. Calendar information setting (Date).................................................................... 16
5. Measurement ................................................................................................................. 17
5.1. Measurement screen (display sound pressure map)...................................................... 17
5.2. Display setting ......................................................................................................... 19
5.3. Sleep mode .............................................................................................................. 21
5.4. Data save ................................................................................................................. 21
5.5. Precautions for measuring ......................................................................................... 21
6. How to save files............................................................................................................. 22
6.1. Folder...................................................................................................................... 22
6.2. Saved file list ........................................................................................................... 22
6.3. Delete data............................................................................................................... 23

6.3.1. Delete from “Image Check” ............................................................................... 23
6.3.2. Delete all files (File All Delete) .......................................................................... 24
7. How to handle saved data............................................................................................... 25
7.1. How to copy data to a PC .......................................................................................... 25
7.2. How to detach the instrument .................................................................................... 27
8. About leak amount display............................................................................................. 28
9. Troubleshooting ............................................................................................................. 30
9.1. If you think there is something wrong with the instrument ........................................... 30
9.2. Alert message list ..................................................................................................... 33
10. How to properly maintain your instrument ................................................................ 36
11. Specifications.............................................................................................................. 37
12. Precautions for disposal.............................................................................................. 39

1
1. Outline
Gas leak Viewer MK-750ST-E (hereinafter called “the instrument”) is to visualize direction of
ultrasonic sound source (leak source) indicating distribution of ultrasonic sound (sound pressure)
strength on image display.
It is known that surrounding air vibrates in case there is a leak from a compressed air pipe or others.
However, sometimes it is very difficult to hear the leak sound with human ears in case the leak
location is in loud environment or if there is some distance. Also, even if it is possible to recognize
the leak, it is sometimes difficult to know the actual leak spot.
This instrument detects ultrasonic wave along with leak sound to visualize sound source direction
on a photo image to make it easy to know the leak existence and see the leak spot
The instrument detects ultrasonic wave, therefore, it does not get affected by perceptible
surrounding noises by the ear.
Red section:
Sound pressure peak spot
(Leak point)
Gas leak point
Image display
Gas leak point
Sound pressure map

2
2. Preparation before use
2.1. Enclosed items
The number shown in〔 〕are the quantities of the item.
※The protector will be attached to the instrument when delivered.
Wrist strap 〔1〕
Battery charger and AC power cable 〔1〕
Battery pack 〔1〕
Instruction manual 〔1〕
Protector 〔1〕※
USB cable 〔1〕

3
2.2. Description
No
Name
1
Directional pad
2
Menu button
3
Power button
4
Confirm button
5
Display
6
Mini-USB connector
7
Battery lid / Battery holder
8
Platform attachment screw
(1/4-20UNC)
9
Strap hole (on 4 corners)
10
Ultrasonic sound sensor and camera
11
Shutter button

4
2.3. How to handle a battery pack
The instrument operates with a lithium-ion rechargeable battery. Use only the designated genuine
battery pack only with the instrument.
When you receive the purchased instrument, the instrument and the battery pack are enclosed in
separate boxes.
The battery pack is not fully charged when you receive the purchased instrument. Be sure to charge
it fully before use. Please follow the procedures shown below to charge your battery pack.
2.3.1. How to charge a battery pack
Charge your battery pack by following the procedures shown below before use. Charge your
battery pack with enclosed designated battery charger.
①Connect enclosed AC adaptor to the connector on your battery charger.
②Connect the power cable to the AC adaptor.
③Insert the battery pack ensuring the terminal positions are facing each other.
④Plug the power cable to an outlet.
The battery charging light turns orange while it is charging, and turns green when it is fully
charged.
⑤Take the battery pack off from the charger, unplug from the outlet.
“AC adaptor”
④Power cable
To an outlet
③Insert battery pack
①Connect AC adaptor
②Connect power cable
Charging light
“Battery charger”

5
To confirm charge level of your battery, press the button next to the battery picture on your battery
pack. LED light turns on showing the charge level.
Approximate battery charged levels are shown as below.
Battery charge level 75% or more
Battery charged level 50% or more
Battery charged level 25% or more
Battery charged level 10% or more
Battery charged level Less than 10%
LED light flashes in case battery level subceed 10%.
Enlarged

6
2.3.2. How to attach a battery pack
Follow the procedures shown below to attach a battery pack. It is possible to attach and detach the
battery pack while the instrument is wearing the protector.
Take off the battery lid while pulling the lock “①” to the direction shown by the arrow.
Pay attention to the battery pack direction and insert the pack all the way inside.
(Be sure to have the slits on the battery pack facing the back side of the instrument)
Close the battery lid firmly until you hear a clicking sound.
②
①
③
①
④
⑤

7
2.3.3. How to detach a battery pack
Take off the battery pack in case the charge level is low or you do not have a plan to use for a
while. Follow the procedures shown below to detach a battery pack.
①Open the battery lid while pulling the lid toward to the direction shown by the arrow.
②Pull out the battry using the tab on it.
③Close the battery lid.
2.4. How to setup calendar information
Default setting of the calendar information on the instrument is set at Japanese standard time.
Please check your local time and confirm the setting, and change the setting if necessary.
Please refer to “4.4.2 How to setup your calendar information” (p. 15)
2.5. How to attach a wrist strap
Put the strap string through the hole in order ①→②→③ as shown in the picture above, and then
use Velcro to hold it. Repeat the procedure for the other side, too.

8
2.6. How to attach a neck strap (Optional)
The neck strap is an optional accessory that is sold separately. It is possible to attach the neck
strap while the instrument is wearing the protector and/or the wrist strap. Please attach the neck
strap before use.
① Take the buckle off
② Strap it through the hole shown below on the side where the wrist strap is attached to.
(Right side of the instrument)
③ Strap the other side of the neck strap (flat strap) on the left side of the instrument as shown below.
①
②
③
①
②
①
②
③
④

9
④ Buckle up the strap
Buckle up and make sure you hear a clicking sound.
The neck strap can be also strap onto the bottom side of the instrument. Strap it whichever easy for
you to use.
Precaution for use
Wrapping the neck strap around your neck may cause strangulation.
Strap may be torn if you pull too hard.
Use dry and soft cloth when you clean the strap.
When the strap is heavily stained, wipe it clean with wet cloth and then finish it up with clean
dried cloth.
Never use benzene, thinner, alcohol, chlorine-based detergent, kitchen cleaner, or others. Any
of these may damage/deform the strap.
In case the instrument is wet, dry it with dried cloth and let it completely dry in shade.
In case you feel any abnormality on your skin, immediately stop using the strap.