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Jelight JEL-2400, Operating Instructions Manual, Page: 7 / 22

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Jelight JEL-2400 Operating Instructions Manual Download Page 7

 

Page 7 

4. 

Internal Battery Pack: 

 

4A. About:

 

The  JEL-2400  contains  a  3.7V  5500mAh  rechargeable  lithium-polymer  battery  pack. A 
new,  fully  charged  battery  pack  will  typically  provide  4-8  hours  of  continuous  use 
(depending on display brightness settings and other feature settings).  

 

4B. Charging: 

Charging the battery is done through the USB 3.0 mini or micro port. 

 

 

WARNING:

 The battery pack in the JEL-2400 is expected to last for many years (up to 500 charge 

cycles).  Batteries should only be charged, stored and used in temperature between 0 Deg C to 45 
Deg C, or expansion and damage can occur.  Battery packs should only be replaced by trained 
personnel. Changing of the battery pack by end user voids the warranty and can cause damage to 
the pc board.

 

 

The  power  source  can  be  supplied  from  a  computer,  a  power  bank,  a charging hub,  a 
wall-wart or any USB 2.0 or 3.0 device. A full charge is obtained in approximately 12 - 14 
hours.  Meter will charges the fastest when the power  button is in the off position. The 
JEL-2400  circuit  is  design  to  prevent  over  charge.  The  JEL-2400  has  a  low  power 
indicator that will advise when the battery needs recharging. 

 

 
 
5. Sensor Connector and Wiring:

 

 
The 15 pin D Sub miniature connector on the top of the JEL-2400 was selected to allow 
backwards  compatibility  with  existing  D  sensors.  Future  JEL-2400  sensors  will  be 
supplied  with  an  internal  memory  chip  inside  the  D-sub  connector  that  includes  the 
model and serial number of the sensor as well as calibration information. The JEL-2400 
will  have  the  ability  to  read  the  smart  detector  information  and  apply  the  proper 
calibration factor to be used during testing.  

 

 

The D-sub not only receives the current generated by the sensor after exposure to light, 
it  also  supplies  reverse  5  or  9  volt  bias  to  sensors  requiring  bias  for  power  and/or  to 
improve  response  time.   The D sub connector  is not limited to only measuring devices 
manufactured by Jelight. Any solid state device that generates current from 50 pA to 1 
mA  can  be  connected  to  the  JEL-2400  for  measurement  of  current.  Please  see  wiring 
diagram below: 

 
 

 

 

 

 

 

Summary of Contents for JEL-2400

Page 1: ...ELIGHT OPERATING INSTRUCTIONS JEL 2400 RADIOMETER PHOTOMETER Rev X J Jelight Company Inc 2 Mason Irvine CA 92618 USA Tel 1 949 380 8774 Fax 1 949 768 9457 http www jelight com e mail sales jelight com ...

Page 2: ...USB Ports 8 7 Display 8 8 Current Measurement and Limitations 9 9 Sample Time and Limitations 10 10 Reverse Bias 10 11 Home Screen 10 12 Display Style Selection 10 13 Display Content 11 14 Feature Buttons 12 15 Settings 13 16 Files 18 17 Light Calc 19 18 Sleep 19 19 Survey 19 20 Info 20 21 Upgrades 20 22 Care and Handling 21 23 Warranty 22 24 Calibration 22 ...

Page 3: ...onds or use Auto based on light level H2 Recording Interval Select from 1 second up to 1 hour or use Sample to match the Sample Time for faster speeds H3 Chart Update Time Trend Select from 3 times per second up to once per hour I Dimension 3 x 6 x 1 5 J Weight 8 lbs 3 Quick Reference Guide 3A Front The front panel of the JEL 2400 is a full color 4 3 capacitive TFT touch screen display The display...

Page 4: ... during testing tighten screws on each side of sensor connector 3E Quick Setting Guide If your meter and sensor were purchased together along with optical calibrations your device s will arrive with factory pre programmed optical calibration factors See 15B Manage Calibration Factors for self programming of calibration factors as needed i Turn on the meter by pushing the On Off button down into th...

Page 5: ... find the correct sensitivity factor as noted on your certificate if you do not locate your calibration factor and units from the certificate go to 15B to learn about adding changing calibration factors Touch the back button to return to the home screen 3F2 Zero There are two kinds of zero that can be used to improve accuracy A dark zero is used to remove small ambient noise caused from the enviro...

Page 6: ...ero Takes a measurement and creates a zero value by subtracting the zero measurement reading from all future readings see 3F2 above to learn more about assuring an accurate zero 3G7 Hold Freezes the numerical display value on screen 3G8 100 Takes a measurement and saves it as the 100 baseline for Transmission and OD 3G9 Capture Takes a single measurement Captured measurements are appended to the s...

Page 7: ... fastest when the power button is in the off position The JEL 2400 circuit is design to prevent over charge The JEL 2400 has a low power indicator that will advise when the battery needs recharging 5 Sensor Connector and Wiring The 15 pin D Sub miniature connector on the top of the JEL 2400 was selected to allow backwards compatibility with existing D sensors Future JEL 2400 sensors will be suppli...

Page 8: ...sed for code updates and requires the use of a memory stick not included DATA Accesses the internal 4 Gb memory device where data is saved and to charge the battery The Micro USB is used to download stored data and to erase data from the memory device This port can also be used the charge the battery PC The Mini USB port is used to connect to a computer and to charge the battery 7 Display The Disp...

Page 9: ...decades of current and or light levels While autoranging the JEL 2400 can experience saturation When this condition occurs the display will provide a SATURATION warning To prevent saturation neutral density filters or apertures can be added to the sensor or a greater distance between the sensor and the source can be used Note D type sensors have been designed to assure a safe current value is supp...

Page 10: ...is turned on it will take a few moments for the software to initialize Upon completion the home screen will be displayed To return to the home screen at any time simply touch on the Back arrow in the top left of the display in settings screens or touch on the home icon within a measurement screen note it is possible skip the home screen by changing the start up app in settings 12 Display Style Sel...

Page 11: ...res when intensities are too low or too high YELLOW is typically used as a warning stage indicating the range has changed and is approaching the Red error indicator level GREEN indicates the readings are in the desired range The light level display and buttons are much smaller in the Light stack to allow a greater viewing area for the color indicators Note for error message Light Stack is not conf...

Page 12: ...n the conditions in the environment fluctuate temperature noise ambient lighting 14C Integrate Is used to measure dosage or exposure When toggled on the JEL 2400 will take the present reading and add it to the previous value once per second creating a sum of light measurements over time When in integrate mode the units of the readings change to include seconds For example Lux becomes lux seconds W...

Page 13: ...play which allows for user customization Settings can also be accessed by clicking on the setting drop down menu in the display screens 15A Display Brightness Brightness selection ranges from 1 Dim with lowest battery consumption to 10 Brightest with highest battery consumption Radiometer Settings 15B Calibration factors 15B1 Meter Factor Selects calibration factors from the pre programmed availab...

Page 14: ... setting the range 15E Gain Range When Auto Gain Range is set to off in section D above Gain Range becomes accessible The user can select the range based the max current to be measured i e 1 mA 3uA or 300 nA Each relay allows the JEL 2400 to measure approximately 3 4 decades with the max being the saturation point and noise become problematic as the reading approaches 0005 from the max To determin...

Page 15: ...l and sample time are synched i e if sample time is set to 1 the meter will record a value every 1 seconds Trend Chart Settings 15I Chart Type Select a bar graph or line graph 15J Update Interval Select the time between updates to the display from 1 sec to 1 hour Error and Warning Level Settings 15K Light Stack Setting Settings for light stack will determine when the screen turns Red Yellow and Gr...

Page 16: ...ific notation on i e 1 06e 3 W cm2 to Scientific notation off i e 001 W cm2 2e 2 lux becomes 200 lux Note the Display on the JEL 2400 allows up to 3 digits after the decimal place When using scientific notation on the device can display readings as low as e 13 with two decimal places ie 6 23e 13 When scientific notation is off it is not possible to display low values such as 000000000000623 In ord...

Page 17: ...d traceability 15Q 1 Factor Number Numbers range from 1 20 The JEL 2400 stores up to 20 calibration factors which are selected using Factor number as shown in section in 15B 15Q 2 Factor Description Enter a nick name component model Serial number or sensor stack i e lux sensor UVC 234 Note spaces are converted to a 15Q 3 Factor Units Enter the units for the readout i e lux Note Spaces are converte...

Page 18: ...all settings to memory until Save Settings is pressed again When applied a box will appear around the button to indicate completion 15U Restore Defaults Returns all datalight software settings back to the factory default values Restore does not erase or alter calibration factors or any save data within the device 16 Files The csv files saved in the Files folder can be accessed using both internal ...

Page 19: ...d the distance in meters 18 Sleep Manually sets the screen to dark to conserve battery Simply touch the display at any time to turn off sleep mode and re illuminate the display 19 Survey The built in survey application allows customers to apply an address or note which will be added to the date and time stamp for captured readings Captured readings will be used to create a csv file which can be do...

Page 20: ... address will now show in the Select Location box ix To save reading s touch the capture button Readings will be saved to the Survey_data_file csv file accessible via the USB micro port 20 Info Lists product and software settings including model no serial no calibration information software and firmware information and user programmable selections such as sample time range selection etc 21 Upgrade...

Page 21: ... a recommended operating range of 0 Deg C to 40 Deg C to assure the accuracy of the calibrated measurements 22B Humidity 0 95 non condensing 22C ESD Use basic ESD precautions and practices when handling the device It is advisable to discharge any static buildup by touching a grounded conductive surface before making contact with devices or its connectors 22D Cleaning No chemicals or liquid solutio...

Page 22: ...t Jelight for assistance An alternative method to verify calibration is to use a second detector One detector is kept stored in an out of the way place while the second is used to work with Whenever the calibration of the work detector is to be checked or is in question the stored detector is then taken out of storage and the results from the two are compared If they compare it is reasonable to as...

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