horiba LO-300 User manual

Laser scanning type surface oil detector
LO-300
Instruction Manual
CODE:GZ0000312982B

July, 2017 © 2012 2017 HORIBA Advanced Techno Co., Ltd.
Preface
This manual describes the operation of the Laser scanning type surface oil detector, LO-300.
Be sure to read this manual before using the product to ensure proper and safe operation of
the product. Also safely store the manual so it is readily available whenever necessary.
Product specifications and appearance, as well as the contents of this manual are subject to
change without notice.
Warranty and responsibility
HORIBA Advanced Techno, Co., Ltd. warrants that the Product shall be free from defects in
material and workmanship and agrees to repair or replace free of charge, at option of HORIBA
Advanced Techno, Co., Ltd., any malfunctioned or damaged Product attributable to
responsibility of HORIBA Advanced Techno, Co., Ltd. for a period of one (1) year from the
delivery unless otherwise agreed with a written agreement. In any one of the following cases,
none of the warranties set forth herein shall be extended;
Any malfunction or damage attributable to improper operation
Any malfunction attributable to repair or modification by any person not authorized by
HORIBA Advanced Techno, Co., Ltd.
Any malfunction or damage attributable to the use in an environment not specified in this
manual
Any malfunction or damage attributable to violation of the instructions in this manual or
operations in the manner not specified in this manual
Any malfunction or damage attributable to any cause or causes beyond the reasonable
control of HORIBA Advanced Techno, Co., Ltd. such as natural disasters
Any deterioration in appearance attributable to corrosion, rust, and so on
Replacement of consumables
HORIBA Advanced Techno, Co., Ltd. SHALL NOT BE LIABLE FOR ANY DAMAGES
RESULTING FROM ANY MALFUNCTIONS OF THE PRODUCT, ANY ERASURE OF DATA,
OR ANY OTHER USES OF THE PRODUCT.
Trademarks
Company names and brand names are either registered trademarks or trademarks of the
respective companies. (R), (TM) symbols may be omitted in this manual.

Regulations
Conformable Directive
This equipment conforms to the following directives and standards:
Note
When the sensor cable, the transmission cable, or the contact input cable is extended to 30 m or
longer, the surge test specified in the EMC directive for CE marking is not applied.
Installation environment
This product is designed for the following environment.
Overvoltage Category II
Pollution degree 2
Information on disposal of electrical and electronic equipment
and disposal of batteries and accumulators
The crossed out wheeled bin symbol with underbar shown on the product or accompanying
documents indicates the product requires appropriate treatment, collection and recycle for
waste electrical and electronic equipment (WEEE) under the Directive 2012/19/EU, and/or
waste batteries and accumulators under the Directive 2006/66/EC in the European Union.
The symbol might be put with one of the chemical symbols below. In this case, it satisfies the
requirements of the Directive 2006/66/EC for the object chemical.
This product should not be disposed of as unsorted household waste.
Your correct disposal of WEEE, waste batteries and accumulators will contribute to reducing
wasteful consumption of natural resources, and protecting human health and the environment
from potential negative effects caused by hazardous substance in products.
Contact your supplier for information on applicable disposal methods.
EMC: EN61326-1
Class A, Industrial electromagnetic environment
Safety: EN61010-1
EN60825-1
Warning: This is a Class A product. In a domestic environment this
product may cause radio interference in which case the user
may be required to take adequate measures.

FCC rules
Any changes or modifications not expressly approved by the party responsible for compliance
shall void the user's authority to operate the equipment.
Warning
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own expense.

For Your Safety
Hazard classification and warning symbols
Warning messages are described in the following manner. Read the messages and follow the
instructions carefully.
Hazard classification
Warning symbols
This indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury. This is to be limited to the most extreme
situations.
This indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
This indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury. It may also be used to alert against
unsafe practices.
Description of what should be done, or what should be followed
Description of what should never be done, or what is prohibited

Safety precautions
This section provides precautions for using the product safely and correctly and to prevent
injury and damage. The terms of DANGER, WARNING, and CAUTION indicate the degree of
imminency and hazardous situation. Read the precautions carefully as it contains important
safety messages.
WARNING
Ensure to perform grounding for the GND terminal of power cable, or it may cause electric shock.
This product is not an explosion-proof instrument. It is not possible to use it in an environment of
inflammable gas, explosive gas, or inflammable dusts to avoid death or fire accidents.
CAUTION
The weight of the detector is approx. 11 kg (main unit: approx. 9.8 kg, accessory cable: approx.1.4
kg).
Do not give strong impact to the detector, or it may damage the window glass, resulting in injuries or
product malfunction.
Power supply specification of detector: 100 V AC 10, 50 Hz to 60 Hz.
Avoid supply from the power with noise or large voltage fluctuation.
Provide a safety countermeasure such as a breaker.
In reflecting the laser light to any other thing than the detector for a test purpose, do not direct it to the
person.
If the laser light goes into eyes for a long period of time, it could cause decrease in the eyesight.

Label Description
Display Unit Label
This messages are described in the following manner of display unit.
Caution Label
This is a caution label to remind you that water invasion would destroy the instrument.
Warning Label
This label mean Laser devices.
Label Description
This messages are described in the following specifications of the laser at the same time
provides precautions to enable you to use the product safely to prevent injury and damage.

CE marking/maximum rating/connector name label
This is a label to show you the maximum rating, connector name and compliance to the CE
marking.
Earth label
This is a label to remind you the protective earth wiring is necessary for the detector rack or
stand.

Product Handling Information
Operational precautions
Use of the product in a manner not specified by the manufacturer may impair the protection
provided by the product. And it may also reduce product performance.
Exercise the following precautions:
Some parts such as laser diode or scanning unit must be replaced every four years.
Severe condition (high temperature, continuous vibration) may make the life span short.
Consult us when you need repairs or technical support about the LO-300.
Wave by the strong window or splash by heavy rain may influence oil detection though the
instrument is designed to reject these obstructions. Good oil detection results by flat water
surface.
Install the food of the option when you set it up in the place with steam.
Use the shading hood of the option in the place with direct sunshine or radiant heat
source.
Return the front lid after the end of work when you remove a front lid of display box.
Tighten four screws with the torque wrench securely (0.6 N•m). When tightening is
insufficient, it causes the damage of the device. Water is infiltrated in the detection
machine when there is a bite crowding of O-ring for the waterproof and the equipment
might be damaged.
Water level automatic adjustment is the function to be performed in replacing the optical
parts.
Avoid irresponsible adjustment, or it may influence the normal detection or judgment.
For lightning surge prevention, ensure to ground the stands. Connect the grounding.
When the upper lid of the indication box is removed due to maintenance work
(replacement of desiccants or fuse), return it to the original state after the maintenance
work, and tighten the fixing screws (6 pcs) using a torque wrench (tightening torque: 1.57
Nm). Insufficient tightening or biting of waterproof O-ring can cause water intrusion
inside the detector, resulting in damage of the instrument.
Power supply specification of detector: 100 V AC 10, 50 Hz to 60 Hz.
Install the protection equipment on the power supply.
Avoid supply from the power with noise or large voltage fluctuation.
Provide a safety countermeasure such as a breaker.
Do not connect the shield line on the receiving side.
To extend the signal/contact output cable, use a cable with shield to provide transition
wiring.
Do not ground the terminal [S] of the signal/contact output cable without inserting an
isolator; otherwise, it may result in a failure of detector.
Confirm the wiring confirmation and the power-supply voltage when you complete
construction (100 V AC 10).
Execute it with 250 V DC when you examine the insulation voltage.
When operation without exchanging the optical lock screws, normal detection cannot be
done. In addition, it breaks down when continuously using it.
To remove the detector, first confirm that the power is turned OFF, and replace the truss
head screws (three locations) with the lock screws retained. If shipped with the truss head
screws, it may damage the detector due to shock during transportation.
Periodical maintenance and cleaning are necessary to keep performance well.
If the dirt is hard to be removed, use a neutral detergent.
Do not use an organic detergent such as thinner.

Disposal of the product
When disposing of the product, follow the related laws and/or regulations of your country.

Manual Information
Description in this manual
Note
This interprets the necessary points for correct operation and notifies the important points for
handling the product.
Reference
This indicates the part where to refer for information.
Tip
This indicates reference information.

Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Detection principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Detectable oil types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Main function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Brief explanation of the functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Area detection function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
External output function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Changing the setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Other functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Explanation of each part. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Part names of main body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Display box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Monitor screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Status description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Screen configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Installation environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Installing detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Installation example using stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Changing the direction of display box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Wiring work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Wiring for detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Note in current output use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Note in wiring work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Protection of receiver side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Preparation for operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Operation check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Operation test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Set menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
TEST mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Maintenance list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Periodical inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Cleaning optical window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Checking monitoring position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Operation check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Countermeasure at system error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Message list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Dimensional outline drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Detector stand (option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Mounting bracket (option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Shading hood: 550 mm (option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Shading hood: 450 mm (option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Steam protection hood (option). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Overview
1
Overview
Introduction
The laser scanning type oil film detector LO-300 is equipped with the LCD indicator of touch
panel type. With this indicator, various operations are available such as status check of oil film
detection area or optimum setting change for detection. LO-300 is a non-contact oil film
detector designed for installation at locations at which oil leakage could occur such as pits,
clean water reservoirs, pools, drainage ditches, and manholes.
It is suitable for early detection of oil leakage to the river or the sea and for prevention of
outflow accidents.
Features
LO-300 has the following features.
Distance of up to 4 m between the detector and water surface (detection area) is possible
(6 m for the still-water surface).
Signal processing by the built-in CPU realizes the area detection function as well as
removal of the noise due to ambient light.
[Area detection function]
Alarms caused by reasons other than oil leakage accident (accumulated oil film, iron
bacteria, insect, fish and others) can be excluded.
[Ambient optical noise removal function]
Free from influence of ambient light such as lightning or camera flash.
Improvement in maintenance ability
The recommended maintenance cycle is four years (improved to double compared with
our existing product).
Easily accessible monitor screen
A large-scale LCD indicator with touch panel has realized great improvement in visibility
and operability.
Easy installation
The optical device in the main body has our original hanging structure (bell-shaped
structure), which assures vertical installation of the instrument even with a slight
inclination of the detector, allowing easy installation work.

Overview
2
Detection principle
The light reflected from the water surface is dependent on the refractive index of the surface
material. If the surface is covered with oil film, the oil will reflect light more than that of water
surface, because the refractive index of the oil is higher than water. The intensity of the light
reflected from the surface suggests the oil on the water.
The oil detection system by light reflection method needs large detection area to get the mean
reflection that is the instrument needs large caliber lens and detector because the local wave
of the water scatters the incident light.
The LO-300 scanning laser system matches the request to detect oil on the water, the small
size of trunk covers large detection area from a distance. Moreover this system can measure
the oil covering ratio by the reflection time scanning. The laser scanner module rotating
around the optical axis could reject local light scattering by the wave ripple and detect mean
intensity of the reflection from the surface.
Fig. 1 LO-300 detection principle
Detectable oil types
Followings are the conditions of detectable oils. Table 1 shows typical oil types.
Oils not dissolved in the water.
Oils lighter than the water and spread on the water.
The refractive index is higher than 1.4.
Table 1 Detectable oil types (typical example)
Motor
Photo detector
Lens
<Detection area>
Laser module
Signal
processing
4 mA to 20 mA output
Oil film alarm
contact output
Error contact output
Gasoline Lubricating oil
Kerosene Cutting oil
Diesel fuel Toluene
Crude oil Vegetable oil
Insulation oil

Overview
3
Main function
Brief explanation of the functions
Reflection level diagnosis and instrumental error judgment
Oil film detection, reflection level error and instrumental errors are judged and the result will be
displayed on the monitor display and the contacts are activated.
Two contacts output; “oil film detection”, and “reflection level error instrumental errors”
Oil film detection
When 0is set to the detection area (factory default setting);
Detection is given when the light reflection level exceeds the detection level, and when
the continuous judgment time passes.
If the detection area is set to 0, oil film of trace volume can be detected.
When 10or more is set to the detection area;
Detection is given when the detection area which laser light reflection level is over the set
detection level exceeds the detection area setting, and when the continuous judgment
time passes.
If the detection area is set to 10or more, detection according to the size of the detection
area is possible.
Detection level error
When setting the detection of lower limit error (LOW LEVEL) to valid;
The lower limit error is output when the detection area is no water (no reflection) status or
when a reflection-less object such as debris is accumulated on the detection area for 30
seconds (fixed) or more.
When setting the detection of lower limit error (LOW LEVEL) to invalid;
No judgment on the lower limit error (reflection-less state) is given, in regardless of the
condition of detection area.
For upper limit error (HIGH LEVEL) (abnormal reflection light);
The upper limit error is output when a strong reflective material such as aluminum
remains for 30 seconds or more.
Instrument error
The instrument error (SYSTEM ERROR) is output on the following conditions.
When the rotation of the motor stops.
When the luminescence of the laser stops.
When the temperature error occurs inside the detector.

Overview
4
Area detection function
The area detection function performs judgment by the rate of the oil film present on the
detection area.
Alarm output can be avoided in a case where a trace oil film always floats on the water
surface.
Setting step
Set the area detection setting value to 10or more (10to 90) to activate the area
detection.
Set the detection area (warning, alarm) within the range from 0to 90.
Ensure the following: [Detection area (WARNING) Detection area (ALARM)].
Set the detection area by referring to the value of detection level monitor in the test mode.
(Fig. 2 shows an example of area detection setting step.)
The factory default setting is as follows.
Detection area (WARNING): 0, Detection area (ALARM): 0, Area detection: Invalid
If the detection area is set to 0, it is possible to detect the oil film of trace volume.
For detailed explanation of detection level monitor and detection area setting screen,
refer to “ Detection area setting ” (page 36).
Fig. 2 Setting area detection (example)
Oil film

Overview
5
Display examples of detection result
Oil film alarm status
The state in which the oil film alarm is triggered due to trace volume of oil when the area
detection function is invalid.
Monitoring of detection level
The detection area is checked by the detection level monitor in the Test mode.
Setting of detection area
An oil film of 20is continuously suspended on the detection area; the threshold of alarm is
set to 50, and the threshold of warning is set to 30.
Monitoring status after setting change
Check that the oil film alarm indication disappears and the status mode turns into NORMAL
RUN.
Note
Use the area detection function with the distance from the detection area to the detector within 2
m.
The detection area depends on the shape and the position of oil film.
If the area detection function is activated in a location with ripples, it might not detect oil film.

Overview
6
External output function
Contact output
Table 2 shows the contact output of the detector.
The judgment result of detection and error is externally output at each dry contact point.
There are normal open (NO) contact and normal close (NC) contact available: Choose
whichever appropriate according to customer’s installation environment.
The system error contact output happens or may happen on the following conditions.
Provide a unit to neglect a signal more than 5 seconds if you want to avoid a momentary error.
Following five seconds after powered to the detector.
Momentary power down longer than 500 ms.
Power voltage is affected greatly by a power consumable apparatus nearby.
Noise on the power line (100 V AC) for the detector.
Table 2 Contact output
Detector status LCD Display
Standard
Oil film alarm (AL)
contact System error
(ER) contact
ALARM WARNING
NO NC NO NC NO NC
Normal NORMAL RUN 
Oil film alarm OIL ALARM 
Oil film warning OIL WARNING 
Instrument error SYSTEM ERROR 
Detection level
error
Upper limit HIGH LEVEL 
Lower limit LOW LEVEL 
Power interruption - 
CPU error LED ON in the left of display
(CPU ERR) ----
In the factory default setting, contact output mode of “ALARM” is selected.
For details, refer to “ Contact output setting ” (page 38).
For the detailed explanation of the optional functions, refer to “ Data ” (page 60).
NO, NC is indicated on the crimp terminals of the signal and contact output cables.
For details, refer to “ Wiring for detector ” (page 27).
: OPEN, : CLOSE, -: Either state of OPEN or CLOSE