Omega OS 531 User manual

Installation and operating
manual
Document
:
3403235
Language
:
Eng
Rev.
:
002
Date
:
7.4.2021
OS 531
Ultrasonic Leak Detector

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Dear Customer,
Thank you for choosing our product.
Before you start up the device, please read this manual in full and carefully observe instructions stated. The
manufacturer cannot be held liable for any damage that occurs as a result of non-observance or non-compliance with
this manual.
Should the device be tampered with in any manner other than a procedure that is described and specified in the
manual, the warranty is void and the manufacturer is exempt from liability.
The device is designed exclusively for the described application.
Omega air d.o.o offers no guarantee for the suitability for any other purpose. Omega air d.o.o. is also not liable for
consequential damage resulting from the delivery, capability or use of this device.

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Table of Contents
1Safety instructions..................................................................................................................................................... 5
2Application................................................................................................................................................................ 6
3Features ..................................................................................................................................................................... 6
4Technical data............................................................................................................................................................ 6
4.1 General data ...................................................................................................................................................... 6
4.2 Electrical data.................................................................................................................................................... 7
4.3 Performance data............................................................................................................................................... 7
5Scope of delivery....................................................................................................................................................... 7
6Learning about the device ......................................................................................................................................... 8
6.1 Components....................................................................................................................................................... 9
6.2 Touch screen display ......................................................................................................................................... 9
6.3 Dimension and electrical ports ........................................................................................................................ 11
7Before you start for the first time ............................................................................................................................ 11
7.1 Charging the device......................................................................................................................................... 11
7.2 Performing initial setup................................................................................................................................... 11
8Procedures of conducting a leak survey .................................................................................................................. 13
8.1 Using the OS 531 in the non-LMS mode ........................................................................................................ 13
8.2 Using the OS 531 in the LMS mode ............................................................................................................... 14
9Setting up and Starting a leak survey ...................................................................................................................... 15
9.1 Switching the OS 531 to the required mode.................................................................................................... 16
9.2 (Non-LMS mode only) Creating a survey....................................................................................................... 16
9.3 (LMS mode only) Downloading a survey from the LMS ............................................................................... 16
9.3.1 Remotely logging into the LMS via WLAN .......................................................................................... 16
9.3.2 Downloading the survey information from the LMS ............................................................................. 17
9.4 Specifying the survey settings......................................................................................................................... 18
9.5 Starting the survey........................................................................................................................................... 19
9.6 Stopping the survey......................................................................................................................................... 19
10 Detecting leaks ........................................................................................................................................................ 19
11 Recording leaks....................................................................................................................................................... 21
12 Managing leak records ............................................................................................................................................ 24
12.1 Viewing and editing a leak record............................................................................................................... 24
12.2 Copying leak records to a PC...................................................................................................................... 25
12.3 Uploading the leak records to the LMS ...................................................................................................... 26
13 Maintenance ............................................................................................................................................................ 26
13.1 Self-test ....................................................................................................................................................... 26
13.2 Updating the firmware ................................................................................................................................ 26
13.3 Resetting the device .................................................................................................................................... 29
13.4 Cleaning the sensor ..................................................................................................................................... 29
14 Optional accessories................................................................................................................................................ 29
15 Disposal or waste .................................................................................................................................................... 30
16 Appendix A: Headset overview............................................................................................................................... 31
16.1 Description.................................................................................................................................................. 31

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16.2 Headset operations ...................................................................................................................................... 31
16.3 Working as a wireless headset..................................................................................................................... 31
16.4 Working as a wired headset ........................................................................................................................ 31
16.5 Pairing a new headset with the OS 531....................................................................................................... 32
16.6 Care and maintenance ................................................................................................................................. 32

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1 Safety instructions
Please check if this instruction manual matches the product type.
Please observe all notes and instructions indicated in this manual. It contains essential information
which must be observed before and during installation, operation and maintenance. Therefore this
instruction manual must be read carefully by the technician as well as by the responsible user or
qualified personnel.
This instruction manual must be available at the operation site of the leak detector at any time. In case
of any obscurities or questions, regarding this manual or the product, please contact the manufacturer.
WARNING!
Compressed air!
Any contact with quickly escaping air or bursting parts of the compressed air system can lead
to serious injuries or even death!
•Avoid that persons get hit escaping air or bursting parts of the system.
WARNING!
Laser pointer!
Do not point into the eyes with the laser. it can lead to serious injuries particularly on lens and
retina or even blindness!
•Never look directly at the laser
•Never point the laser at persons.
•Never point the laser at smooth and reflective surfaces. This can lead to a reflection of the laser.
WARNING!
Voltage used for supply!
Any contact with energized parts of the product, may lead to a electrical shock which can lead
to serious injuries or even death!
ATTENTION!
Permitted operating parameters!
Observe the permitted operating parameters, any operation exceeding these parameters can
lead to malfunctions and may lead to damage on the instrument.
•Do not exceed the permitted operating parameters.
•Make sure the product is operated in its permitted limitations.
•Do not exceed or undercut the permitted storage and operation temperature and pressure.
General safety instructions
•It is not allowed to use the product in explosive areas.
•Please observe the national regulations before/during operation.
Remarks
•It is not allowed to disassemble the product.
ATTENTION!
Measurement values can be affected by malfunction!
The device must be used properly and frequently maintained, otherwise it may lead to

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wrong measurement values that can lead to wrong results.
•Avoid condensation on the leak detector sensor because this will affect the accuracy enormously.
Storage and transportation
•Ensure the transportation temperature is between -20 ... +50°C.
•For transportation it is recommended to use the packaging that comes with the leak detector.
•Please ensure that the storage temperature of the sensor is between -10 ... +50°C.
•Avoid direct UV and solar radiation during storage.
•For the storage the humidity must be <90%, no condensation.
2 Application
OS 531 is a hand-held ultrasonic leak detector that helps you quickly find and record leakages in compressed air or
any gas systems.
When gases leak through tubes and tanks, an ultrasonic sound is produced. OS 531 can detect the sound from
several-meter away, and transform the inaudible sound into a frequency that can be easily heard by ears.
In unpressurised systems, you can use an ultrasonic tone generator to generate sounds that can be detected by OS
531.
To efficiently manage leak surveys, leaks, and related repair activities, you can purchase the LMS (Leak Management
Software), which is specifically designed for the OS 531. LMS is purchased independent of OS 531, and can be
installed on a local or cloud-based server.
The OS 531 can work in the LMS or Non-LMS mode. This manual takes you through how to use OS 531 in these two
modes.
3 Features
•Finds leaks in the compressed air or gas system easily even from distance
•High resolution 3.5” color touch screen, easing operations in leak detection
•Wireless connection with headset
•Built-in camera to take photo of leak locations
•Voice recorder for voice memos
•Laser pointer to pinpoint leak locations
•Records leak information for statistics and repair
•Calculates air loss in l/min, m3/h or cfm and in the local currency
•Integrated noise reduction technology
•Battery capacity for up to 8 hours
•Wi-Fi interface enables wireless data transmission with the LMS.
4 Technical data
4.1 General data
Principle of measurement
Ultrasonic leak detection

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Measuring medium
Compressed Air, refrigerants and any compressed gases
Plug
3.5 mm stereo phone jack for headset
Operating temperature
0 ... +40°C
Battery life
About 8 hours with wireless off
Charging temperature
+10 ... +45°C
Charging time
Around 3 hours
Materials of the detector
PC + ABS
Dimensions
See section 7.3.
Interface
Wireless connection to headset
USB port for charging and data exchange
Display
3.5” color LCD
Laser pointer
Wave length: 640 ... 660 nm
Output power: < 1.0 mW
WLAN
2.4 GHz band
Camera
5.0 megapixels
Headset
Noise isolated and wireless
Weight
3.65 kg (full set)
4.2 Electrical data
Power supply
Internal lithium-ion battery
4.3 Performance data
The table shows the detection distance of various hole diameters at different pressures in the lab environment and
with the trumpet on.
Pressure / diameter
0.1 mm
0.2 mm
0.5 mm
0.5 bar
0.5 m
1.7 m
7 m
5.0 bar
3.6 m
11.5 m
18 m
5 Scope of delivery
The OS 531 layout in the transportation case is shown as below.

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Please make sure that below components are included in your package.
Qty
Description
1
OS 531 leak detector
1
Noise isolated/canceling wireless headset (page 31)
1
Focus tube and focus tip (used for leak detection)
1
Trumpet (used to increase sensitivity and isolate from environmental noise)
1
Battery charger
1
Type-C USB stick
1
Transport case
1
Leak tags to mark found leaks, 100 pieces
1
Instruction manual
1
Calibration certificate
1
Ultrasonic tone generator
1
Calibration for OS 531
6 Learning about the device
This chapter describes components of the OS 531 main unit.

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6.1 Components
Part
Function
1
Power button: Long press to turn OS 531 on or off. It also works as a shortcut button for taking photos
in leak detection.
2
Voice recording button: Press to record voice memos in leak detection.
3
Laser button: Press to turn laser on or off.
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Sensitivity wheel: Turn the wheel to fine tune the sensitivity level.
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Touch screen: for further functions
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Sensor unit: To detect the ultrasonic sound level.
To increase the sensor sensitivity, mount on the trumpet.
6.2 Touch screen display
The 3.5” touch screen enables you to record and manage leak records as well as configure OS 531 easily.

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Area
Function
1
Leaks button
Click to view and/or delete the leak records.
2
Record button
Click to record a detected leak by recording voice memos and taking photos.
3
Menu button
Click to perform additional actions. For more details, please see the following chapters.
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Sound Level
Shows the sound intensity in dB. Range: 0 … 99.
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Leakage Grade
Shows the grade of the detected leakage:
•Grade 0: Leakage = 0 l/min
•Grade 1: 0 < Leakage ≤ 1 l/min
•Grade 2: 1 < Leakage ≤ 4 l/min
•Grade 3: 4 < Leakage ≤ 9 l/min
•Grade 4: Leakage > 9 l/min
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Calculated Losses
Shows the detected leakage and the loss amount in cash per year.
Leakage is calculated based on the sound level detected as well as the pressure and distance
settings.
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Pressure / Distance Setting
Shows the latest settings for the pressure in the detected object and the distance between the OS
531 sensor and the leak point.
You can change the settings by touching the numbers on the touch screen.
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Sensitivity Setting
Shows the sensitivity level. You can adjust the setting by turning the sensitivity wheel.
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Indicates the intensity of the sound that the OS 531 detects： Red strongest, yellow the less, and
green the least.
You can see the actual sound level in DB in the Sound Level area.
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Status bar
Shows the OS 531 status, including the following icons or text:
•WLAN: Icon, displayed when the WLAN is connected.
•Survey on: Text, displayed when a survey is in progress.
•Trumpet: Icon, displayed when the trumpet is mounted on and well connected with the
sensor.
•Battery capacity indicator: Shows the battery percentage.