International Light Technologies ILT770 User manual

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Table of Contents
1. Introduction 3
2. Button Features 3
3. Taking a Measurement 5
3A. Taking a measurement first time users 5
4. raphing 6
5. Battery 7
6. Sensor 7
7. USB Ports 7
8. Calibration 7
9. Warranty 8
10. Software 8
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ILT770 UV Light Meter Instruction Manual
1. INTRODUCTION
The ILT770 is a hand held UV meter designed to measure both irradiance in atts per square
centimeter ( /cm²) and dose/exposure in Joules per square centimeter (J/cm²). The system
comes comfingured with one UV sensors and is calibrated as a set (paired meter/sensor).
Sensors cannot be swapped from one meter to the other as this will impact the accuracy of
the readings.
The ILT770 includes, a storage case, mini USB cable, light meter, UV sensor and NIST
traceable calibration with a certificate.
2. BUTTON FEATURES
The ILT770 meter has a membrane panel with four buttons that allows numerous processes.
1 POWER / UNITS
Press and Hold: Turn device on or off
Press: Toggle units of readouts, /cm²or J /cm²
Note: The ILT770 is auto ranging and will automatically scale to the correct level. A prefix will
be applied to values below 1 /cm2 ( ie m /cm2, µ /cm2, mJ/cm2 and µJ/cm2)
2 ZERO / HOLD
Press and Hold: ZERO: Takes a reading and subtracts that value from all future readings.
2A. Dark ZERO: Cover sensor, wait 2-3 seconds, press zero. This is used to apply a
proper zero for the electronics in the working environment.
2B. Ambient ZERO: Place the sensor in the measurement location with the test source
off or covered. . ait 2-3 seconds for the system to take a measurement of the ambient
light levels. Apply a zero to subtract the ambient from future readings. Turn the lamp on
and measure only the light supplied from the test lamp.
Press: Freezes/Holds the readings on the display
3 RECORD
Press to save/store the results on the display in the internal memory of the ILT770 Meter.
Record saves the following data:
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Units of readout in /cm² or J /cm² as shown on display.
Date/Time Stamp
Numerical Values
Graphical Analysis Values (when in Graph mode)
Min reading
Max readings
Average
The ILT770 has the ability to apply meta data to the saved results. See Applying meta data in
chapter 10 software, on page 8.
4 RAPH MODE
The Graph button has four functions (Start Graph, Stop/Review Graph, Data Analysis and
Exit) that cycle forward each time button 4 is pressed. It is not possible to return to a previous
screen.
GRAPH: Changes the display to graphical mode and start plotting the results and temporarily
storing the readings for final data analysis.
STOP: Stops graphing and holds the display showing the last 60 results.
(NOTE: you cannot return to this screen, to save the results, Press 3, Save now)
DATA: Shows the data analysis from when Graph was first pressed, including Min, Max,
and Average.
(NOTE: you cannot return to this screen, to save the results, Press 3, Save now)
EXIT: Returns the display to numerical /non graphing mode and clears the previous graph
data from the display.
ERASE ALL SAVED DATA
Press and hold both buttons 3 & 4 at the same time to delete all saved reading from the
internal memory of the ILT770.
3. TAKIN A MEASUREMENT
The ILT770 sensor is calibrated with the sensor aperture over filled with light perpendicular to
the light source. The calibration reference plane is the front surface of the housing. hen
taking an irradiance or dose measurement the same conditions should be applied. The light
source to be measured must fully cover the input optics opening with light. The sensor should
be placed so that the front surface is at the treatment location and perpendicular to the
source.
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The ILT770 offers simple operation. If all of your settings are correct, simply turn on the lamp,
press and hold button 1 to turn on the meter, place the sensor in the measurement location
and view the results on the display.
3A FIRST TIME USERS:
First attach the sensor to the top of the meter by aligning the BNC connector and
twisting to lock in place.
Press and Hold button 1 until the meter turns on. Let the meter warm up for a few
minutes.
Change the units between irradiance (w/cm2)and does (J/cm2) as needed by pressing
button 1.
If a dark zero is required, cover the sensor with an opaque object and press and hold
button 2.
If an ambient zero is required place the sensor in the measurement location with the
test light off or covered and then press and hold button 2.
arm up the lamp as needed before measuring.
Place the sensor in the measurement location assuring the front surface of the sensor
is at the same distance from the lamp that the product/ material will be placed and that
the sensor is perpendicular to the light source.
The meter will automatically begin to sense any changes to the light level and will
provide a readout on the display, updating every ½ second.
Press button 3 to save the readings as needed.
Press and hold button 1 to shut off your device, or wait 5 minutes and the meter will
shut off automatically to conserve battery life.
4. RAPHIN
The graph mode is designed to test the uniformity or stability of a light’s output for a short
period of time. It was not designed for long term monitoring. The meter will automatically shut
off after 5 minutes if no buttons are pressed when powered by battery to conserve battery life.
It is possible to graph for longer than 5 minutes when connected to a power source, but it is
not possible to save more than 240 readings (Only the first 2 minutes of data will be saved).
The bar graph updates every 5 seconds offering an easy to evaluate, visual response to
changes in intensity over time. The graph can display up to 60 readings (30 seconds) and will
begin to scroll forward showing only the most current 60 readings when used for longer
duration's.
If the sensor is moved slowly under a lamp, The ILT770 can map the uniformity of the output
over the target area. If the sensor is held stationary, graph mode can verify the stability of the
lamps output.
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To complete a measurement while graphing, press the 4 button. This will freeze/hold the last
60 readings on the display for review.
Up to 2 minutes/240 data point can be saved to the internal memory by pressing button 3 to
save the file. You must save the file for the measurement while the display is in Freeze/Hold
mode showing the Graph. Once Data Analysis is activated, the previous graph data is no
longer accessible.
Press button 4 a third time to access the Data Analysis Display. The graph will be replaced by
the graph analysis window and provide a readout of the Min, Max and Average readings.
Data Analysis Results can be saved to the internal memory by pressing button 3 to save the
Data Analysis file. You must save the file while the display is in Data Analysis mode. Once
Exit is activated, the previous data is no longer accessible.
To exit the graph mode, Press button 4 a third time. This concludes the graph measurement
and returns back to the meter back to a numerical measurement display.
Review: Press button 4 once to enter graph mode and take your measurements, Press again
to stop measuring and review graph. Press a third time to review the analysis and finally
press a fourth time to return to the main display.
5. BATTERY
The battery on the ILT770 includes a 1200 mA hour rechargeable lithium battery that will run
the ILT770 for up to six hours of continuous use. The Battery is rated to last for 300-500
charge cycles. To conserve battery life, the ILT770 will automatically shut off after 5 minutes
unless plugged into a power source or conducting a graph measurement.
To recharge the battery, plug the mini USB cable into the slot on the top of the meter. Plug
the USB A end of the cable into a PC, USB wall plug, USB power bank or any standard
mobile phone USB A charging device. The ILT770 will always turn on when power is supplied
via the mini USB. It will take approximately 4 hours to charge the ILT770 when the battery is
drained. The meter can be used while charging the battery.
Battery replacement cannot be done in the field as it requires soldering to the board which
can cause damage by untrained personnel. Please contact your sales representative to
schedule battery replacement.
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6. SENSOR
The ILT770 has been paired with the sensor and calibrated to create a NIST traceable
calibrated light measurement system. Swapping sensors between meters can cause
inaccurate results. Please verify your meter and sensor serial number on your calibration
certificate if there is a chance your have swapped sensors.
The sensor includes a standard male BNC connector, a 3 foot cable and an integrated
sensor/filter/optic in a low profile 42 mm diameter by 15 mm tall housing.
To attach the sensor locate the female BNC connector on the top side of the meter. Align the
connectors, press down and twist to lock the sensor in place. The meter is designed so that
the sensor can be detached when not in use, or left attached at all times.
The sensor opening that must be completely filled with light. The surface of the opening
should be place perpendicular to the light source and should be at the same distance from the
source as the product being irradiated.
The Sensor is not water proof and should not be submerged. Liquids should be used very
sparingly when cleaning the sensor to prevent possible leakage.
Sensor replacements are available. Replacing a sensor requires calibration at the factory.
7. USB PORT
On the top right side of the meter is the Mini USB port. The USB port is used for both
charging the device and for downloading stored data to a PC. e recommend using the
supplied USB cable or any good quality mini USB cable.
8. CALIBRATION
An annual calibration is typically recommended for all light measurement equipment,
however, the end user may, through their own QC process, create their own calibration cycle.
Service: Before returning any equipment for service, Please obtain an RMA number from the
ILT website: https://www.intl-lighttech.com/service-support/rma-form
Ship goods
Attn: RMA #
International Light Technology, 10 Technology Drive, Peabodty, MA 01950
Email: ilservice@intl-lighttechcom
Phone [phone] x 118
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9. WARRANTY
The equipment you have purchased has been expertly designed and was carefully tested and
inspected before being shipped. If properly operated in accordance with the instructions
furnished, it will provide you with excellent service. The equipment is warranted for a period of
twelve (12) months from date of purchase to be free of defects in material or workmanship.
This warranty does not apply to damage resulting from improper set up, accident, abuse, loss
of parts, or unauthorized alteration / repair. The equipment will be repaired or replaced, at our
option, without charge to the owner for parts or labor incurred in such repair. This warranty
shall not apply unless the equipment is returned for our examination with all transportation
charges prepaid. International Light Technologies has no other obligation or liability in
connection with said equipment.
10. SOFTWARE
The ILT770 software package allows the user to apply firmware updates, configure meta data
to help differentiate readings for owners of multiple systems and to download the data saved
in the ILT770 device
Data Download: The ILT770 can save up to 1000 readings in its internal memory. Using the
PC software users can download the saved data to a PC for analysis, reporting and system
verification.
Click on the Get Data to open the window. Click on Download to Table to open the file in the
PC software window as shown. Save the data to your PC for analysis, reporting and system
verification.
The data is formatted in .csv and can be open by most spreadsheet programs such as excel.
“Save table to CSV” will open up a dialog box that will allow you to save the file. Type in your
file name and preferred location and press save.
Erase data from meter will erase all stored results in the meter. (The same as pressing and
holding buttons 3 &4 at the same time)
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