Manual - General Tools And Instruments
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1. REC on the top line a value in the middle and below it the letter P on the left and a number from 1 to 99 on the same line to the right The number indicates the position on the SD card that will be used to store manually logged data Now press the LOGGER A button This will cause the beeper to sound and the term LOGGER to briefly appear at the upper right of the display As in automatic datalogging mode in this mode the instrument is storing measurements and their time stamps on the SD card In manual datalogging mode however measurements are being stored continuously with a sampling time of zero and their locations on the card can be changed 8 5 To change the storage location of manually logged data press the SET W button once this causes the P to disappear from the left side of the display and the value on its line to begin flashing Once the flashing begins you can use the SET W and LOGGER A buttons to change the flashing value to any number between 1 and 99 Once you have chosen the storage location press the REC ENTER button to save the setting This causes the value to stop flashing and the P to return 6 To end manual datalogging press the REC ENTER button and hold it for at least three seconds This action causes the REC message to disappear from the top line of the display a TO B Lc ae s PA oe _1 Piace Date Time Value ni TRANSFERRING 2 1 2009 12 11 09 55 56 2 37 UVA mWiem2 DA2. button for at least three seconds until the term REC disappears from the top line of the display The display will then revert to showing the current reading AUTOMATIC VS MANUAL DATALOGGING The UV254SD can automatically log data using any of 11 sampling times from 1 second to 1 hour To view the sampling time for which the instrument was set up press the LOGGER A button once To change the sampling time press the SET W button to enter setup mode and perform Step 9 of the setup procedure 1 To start automatic datalogging press the REC ENTER button once The top line of the display will then show the term REC Pressing the LOGGER button at this point will make REC flash and add the flashing term LOGGER at the top right of the display This indicates that the instrument is currently storing measured values and their time stamps in memory 2 To pause automatic datalogging press the LOGGER A button once this action makes the flashing term LOGGER disappear from the top right of the display and changes the term REC from flashing to constant Pressing the LOGGER A button again resumes automatic datalogging 3 To end automatic datalogging press the REC ENTER button and hold it for at least two seconds This action causes the REC message to disappear 4 To log data manually set the sampling time to zero using Step 9 of the setup procedure Then press the REC ENTER button once The display will show the term
3. for at least five seconds until SEt dAtE appears on the display Quickly within three seconds press the REC ENTER button The word dAtE will appear in the center of the display along with the flashing value 00 00 00 at the lower left above yy mm dd If you press buttons too slowly in setup mode the screen will revert to the normal display To return to the setup sequence press and hold the SET W button again To move ahead to the next field in the sequence or to the next parameter press the FUNC HOLD NEXT button callout 1 3 Set the current year by pressing the SET W or LOGGER A button repeatedly until the correct value appears above yy Quickly within three seconds press the REC ENTER button to store the setting The next screen that appears will have the value above mm flashing Use the SET W or LOGGER A button to navigate to the current month and press the REC ENTER button to store the setting When the next screen flashes the value above dd again use the SET W or LOGGER A button to navigate to the current day and press the REC ENTER button to store the setting Once you have set the date the display will prompt you to set the hour minute and second of the current time Again use the SET W or LOGGER A buttons to navigate to the correct values and the REC ENTER button to store the settings 4 Choose a period or a comma to represent the decimal division between integers and fractions
4. type Liquid crystal with green backlight Display size 2 05 x 1 5 in 52 x 38mm UV light types measured UVA UVC Measurement range 240nm to 390nm Measurement accuracy Full scale autoranges 4 of full scale reading 2 digits 2 mW cm and 20 mW cm Stored readings Datalogging sampling times SD card capacity Maximum minimum 1 second to 1 hour automatic mode 1 GB to 16 GB Settable parameters Date time auto power off beep sound temperature unit F or C sampling time thermocouple type K or J decimal point or comma Operating temperature Operating relative humidity 32 to 122 F 0 to 50 C 0 to 85 Power source 6 Alkaline AA batteries or optional 9 VDC AC adapter Power consumption Dimensions of meter Weight of meter 6 5 mADC normal operation with backlight off and SD card not saving data 30 mADC with backlight on 6 97 x 2 68 x 1 77 in 177 x 68 x 45mm 12 38 0z 351g Dimensions of UVA probe head Dimensions of UVA probe handle 1 77 in diagonal x 1 26 in L 45 x 32mm 0 94 in diagonal x 4 92 in L 24 x 125mm Weight of UVA probe 3 53 oz 100g Dimensions of UVC probe 1 50 diagonal x 0 98 in L 88 x 25mm Weight of UVC probe 3 63 02 103g MAINTENANCE amp TROUBLESHOOTING TIPS Keep the UV light probes clean and their sensors under their protective covers when not in use When the icon cx appears in the left corner of the d
5. GENERAL UV254SD USER S MANUAL UVA AND UVC LIGHT METER WITH DATALOGGING SD CARD Please read this manual carefully and thoroughly before using this product TABLE OF CONTENTS INTFOCUENON fence Ge oe ee ee oe ee ees 3 Key FO AUS ic ciuiiose oes aha a ete aed ee ee ee ee 3 Operating Instructions 0000000 4 9 What s in the Case 0ccceee eens 4 SOUP iui au aaa aa ates asus 5 6 Normal Operation 000ecee enna 7 Holding and Storing Measurements 8 Automatic vs Manual Datalogging 8 9 Transferring Data from the SD Card toa Computer ccc cece eee eee 9 Specifications 222k ee eee es 10 Maintenance amp Troubleshooting Tips 10 11 Replacement Parts amp Optional Accessories 11 Warranty Information 0000eeeeeees 11 Return for Repair Policy 000eeeeee 11 INTRODUCTION Thank you for purchasing General Tools amp Instruments UV254SD UVA and UVC Light Meter with Datalogging SD Card Please read this user s manual carefully and thoroughly before using the instrument Many industrial and commercial applications require or can benefit from measurement of the intensity of UVA and or UVC light Among them are welding to minimize exposure to blue light radiation UV sterilization of food photochemical matching erasure of electrically programmable read only memory EPROM chips production of graphic arts products exposure of photoresi
6. T W or LOGGER A button until the unit you prefer F for Fahrenheit C for Celsius is displayed Then press the REC ENTER button to store the selection as the default 9 Set the datalogging sampling time Once the thermocouple type has been selected and stored the display will show a value above the letters SP t Press the SET W or LOGGER A button to decrease or increase the value until the desired sampling time appears above SP t The options are 0 1 2 5 10 30 60 120 300 600 1800 and 3600 seconds 0 seconds to 1 hour 10 Format the SD card Once the sampling time has been set and stored the term Sd F will appear in the lower half of the display Press the REC ENTER button Pressing the REC ENTER button causes the word no or yES to appear over the term Sd F Press the W button to make a selection Choose yES whenever a new SD card is being used or when a used card is being repurposed from use with another SD card instrument or a camera for example and all data on it is to be erased Choose no to preserve any data on a card previously used with this instrument If you choose yES after you press the REC ENTER button the instrument will prompt you to confirm that decision by displaying the term Ent below yES and sounding three beeps To confirm that you want to begin the erasure formatting procedure press the REC ENTER button Ent will then flash
7. TA FROM IHE EE 3 2000 12 11 09 3600 248 UVA mWieuz 4 56 mW SD CARD TO A s 4 2009 12 11 09 56 02 3 29 UVA mW em2 COMPUTER 6 5 2009 12 11 09 56 04 3 74 UVA mW cm2 Z 6 2009 12 11 09 56 06 3 89 UVA mW em2 After automatic or g 7 2009 12 11 09 56 08 3 14 UVA mW cm2 j 8 2009 12 11 09 56 10 2 23 UVA mW cm2 MAPE ise aloe o 9 2009 12 11 09 56 12 0 953 UVA mW cm2 10 56 m measurements remove ii 10 2009 12 11 09 56 14 1 011 UVA mW cm2 the SD card from the 12 11 2009 12 11 09 56 16 0 981 UVA mW cm2 UV254SD and plug it 33 12 2009 12 11 09 56 18 0 673 UVA mW cm2 Ta 13 2009 12 11 09 56 20 0 892 UVA mW cm2 into your computer 15 14 2009 12 11 09 56 22 2 16 UVA mW cm2 either directly if it has 16 15 2009 12 11 09 56 24 3 55 UVA mW cm2 17 16 2009 12 11 09 56 26 3 97 UVA mW cm2 an SD card port or 18 17 2009 12 11 09 56 28 3 94 UVA mW cm2 through an SD card 19 18 2009 12 11 09 56 30 3 94 UVA mW cm2 reader 20 19 2009 12 11 09 56 32 3 94 UVA mW cm2 21 20 2009 12 11 09 56 34 3 95 UVA mW cm2 Because the files containing the time stamped data logs have the extension Xls they open in Microsofts Excel application Figures 2 and 3 show two kinds of Excel presentations a data only screen and a graphics only screen Fig 2 Typical Excel data only screen mW cm2 Fig 3 Typical Excel graphics only screen SPECIFICATIONS Embedded microcontroller Custom one chip LSI device Display
8. W button Doing so causes both values to appear briefly at the lower left of the display 2 To measure the intensity of UVA light seat the UVA probe with its cap on in the socket at the top of the UV254SD callout 1 7 and use the FUNC HOLD NEXT button to select UVA measurement mode If the display shows a value other than zero press the LOGGER button which has the word Zero stenciled above it and hold it for at least three seconds until you hear a beep Then remove the cap from the probe Holding the probe by its handle point the sensor at its end directly at the light source The display will read out the intensity of the source s UVA light component in units of mW cm 3 To measure the intensity of UVC light seat the UVC probe with its cap on in the socket at the top of the UV254SD and use the FUNC HOLD NEXT button to select UVC measurement mode If the display shows a value other than zero press the LOGGER amp button which has the word Zero stenciled above it and hold it for at least three seconds until you hear a beep Then remove the cap from the probe Holding the probe by its handle point the sensor at its end directly at the light source The display will read out the intensity of the source s UVC light component in units of mW cm 4 To measure temperature first make sure neither the UVA nor the UVC probe is plugged into the instrument Then use the FUNC HOLD NEXT button to select temperature measuremen
9. com www generaltools com UV254SD User s Manual Specifications subject to change without notice 2010 GENERAL TOOLS amp INSTRUMENTS NOTICE WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS MAN UV254SD 12 03 10
10. empted repair by non authorized personnel or misuse alterations normal wear and tear or accidental damage The defective unit must be returned to General Tools amp Instruments or to a General authorized service center freight prepaid and insured Acceptance of the exclusive repair and replacement remedies described herein is a condition of the contract for purchase of this product In no event shall General be liable for any incidental special consequential or punitive damages or for any cost attorneys fees expenses or losses alleged to be a consequence of any damage due to failure of or defect in any product including but not limited to any claims for loss of profits RETURN FOR REPAIR POLICY Every effort has been made to provide you with a reliable product of superior quality However in the event your instrument requires repair please contact our Customer Service to obtain an RGA Return Goods Authorization number before forwarding the unit via prepaid freight to the attention of our Service Center at this address General Tools amp Instruments 80 White Street New York NY 10013 212 431 6100 Remember to include a copy of your proof of purchase your return address and your phone number and or e mail address Specialty Tools amp Instruments GENERAL TOOLS amp INSTRUMENTS 80 White Street New York NY 10013 3567 PHONE 212 431 6100 FAX 212 431 6499 TOLL FREE 800 697 8665 e mail sales generaltools
11. for example American style 20 88 vs European style 20 88 Press the SET Y button to make bASIC American style or Euro appear in the upper display as desired Press the REC ENTER button to store the selection 5 Enable or disable auto power off Once the format of decimal divisions has been set and stored the display will show the word yES over the term PoFF Press the SET Y button until the desired automatic power off management scheme yES for enable no for disable is displayed Press the REC ENTER button to store the selection If enabled the power off function shuts off the UV254SD after a period of inactivity of ten minutes 6 Enable or disable the beeper Once the desired power management function has been set and stored the display will show the word yES over the word bEEP Press the SET V button until the desired setting yES or no is displayed and then press the REC ENTER button to store the selection 7 Select the thermocouple type Once the beeper has been enabled or disabled the display will show the word Set over the word type Press the SET W button until your optional thermocouple s type K or J appears on the right side of the display Then press the REC ENTER button to store the selection 8 Select the temperature unit Once the thermocouple type has been set and stored the lower part of the display will show the term t CF Press the SE
12. isplay it s time to replace the six AA batteries that power the instrument although measurements will remain valid for several hours after the low battery indicator first appears Replacing the batteries requires removing the two screws that hold the battery compartment cover in place as explained in Step 1of the setup procedure on page 5 After inserting fresh batteries in the correct orientation tighten the screws to secure the cover 10 If the meter freezes like a computer and buttons become unresponsive try resetting the instrument by pushing the RESET button on its right side callout 1 11 of Fig 1 with the end of a paper clip Remove the batteries when storing this product for an extended period of time Do not drop or disassemble the instrument or immerse it in water REPLACEMENT PARTS amp OPTIONAL ACCESSORIES e Type K and Type J thermocouples e 9 VDC adapter for 110VAC power supply e Spare UVA probe e Spare UVC probe WARRANTY INFORMATION General Tools amp Instruments General s UV254SD UVA and UVC Light Meter with Datalogging SD Card is warranted to the original purchaser to be free from defects in material and workmanship Subject to certain restrictions General will repair or replace this instrument if after examination the company determines it to be defective in material or workmanship for a period of one year This warranty does not apply to damages that General determines to be from an att
13. r housing 1 19 UVC sensor 1 20 UVA probe handle 1 21 UVA sensor 1 22 UVA probe plug 1 23 UVA sensor cap SETUP 1 Choose the power source Before using the UV254SD be sure it is powered by fresh batteries or an optional 9VDC AC adapter plugged into the bottom jack on its right side callout 1 12 To remove the battery compartment cover remove the two screws holding it in place callout 1 14 Then install six AA batteries in the correct orientation using the polarity marks on the inside of the compartment as a guide Replace the cover by replacing the two screws 2 Install an SD card To prepare for setup also install the supplied 2 GB SD memory card or another card with a capacity from 1 GB to 16 GB in the socket on the bottom of the UV254SD callout 1 9 When installing the card make sure its gold contacts are facing front and push the card into the socket until you hear a click To remove the card push it in until you hear a click and the card pops out Now power on the instrument by pressing the POWER ESC button callout 1 2 to generate a short beep To power off the UV254SD press the POWER ESC button and hold it until the instrument responds with a long beep When the meter powers on a series of transient startup screens will briefly appear Once the display has stabilized perform the following eight setup steps in the order presented 3 Set the date and time Press the SET W button callout 1 5 and hold it
14. several times and the instrument will sound another three beeps to confirm that the SD card has been erased and formatted Once the SD card has been formatted or not the display will either return to the first of the eight steps in the setup sequence setting the current date and time or show the term ESC If ESC appears press the POWER ESC button to exit the setup procedure and enter normal operating mode NORMAL OPERATION The UV254SD can measure and store three different kinds of values e The intensity in mW cm of UVA light e The intensity in mW cm2 of UVC light e Temperature in F or C as sensed by a Type K or Type J thermocouple Pressing and holding the FUNC HOLD NEXT button will bring up in order three blank five digit displays above the terms A for UVA light C for UVC light and tP for temperature Each display also automatically shows the correct unit for the parameter 1 To select the measurement mode release the FUNC HOLD NEXT button when the desired parameter appears This becomes the meter s default measurement mode until you change it Whenever the UV254SD is in measurement mode you can turn off the backlight which is on by default by briefly pressing but not holding the POWER ESC button To reactivate the backlight briefly press the button again Whenever the meter is in measurement mode you also can check the current date and time by briefly pressing the SET
15. sts and curing of inks adhesives and coatings The UV254SD has the performance and features needed to satisfy the most demanding aspects of these applications For example it combines the capabilities of UVA black light in the long wave 365 nm band and UVC short waves in the 254 nm band measurement in one instrument The meter also can measure surface temperature if mated with a Type K or Type J thermocouple A UVA probe and a UVC probe are supplied with the instrument Because it is microprocessor based the UV254SD can make full use of the portability reliability and large storage capacities that SD memory cards offer Measurements of light intensity or temperature can be made automatically at any of 11 sampling rates between one second and one hour After time stamping and storing the measurements on an SD card plugged into the instrument a process called datalogging the user can remove the card and transfer the measurements to a laptop or desktop computer either directly or via a USB card reader The UV254SD has a backlit 2 1 2 in diagonal display and is powered by six AA Alkaline batteries or an optional 9 VDC AC adapter KEY FEATURES e Includes UVA and UVC probes e Measures light intensity within two automatically switched full scale ranges 2 mW cm and 20 mW cm e Displays maximum and minimum readings e Performs real time automatic datalogging at sampling time settable from 1 second to 1 hour e Also supports man
16. t mode Obtain a Type K or Type J thermocouple and seat it in the socket callout 1 8 on the top of the UV254SD The display will read out the sensed temperature in degrees F or C depending on the setting chosen during setup along with the type of thermocouple it is configured for To change the unit of measurement press the SET W button to enter setup mode and perform Step 8 of the setup procedure To configure the meter for use with a Type J thermocouple Type K is the default press the SET W button to enter setup mode and perform Step 7 of the setup procedure HOLDING AND STORING MEASUREMENTS 1 To hold a measured value of light intensity or temperature press the FUNC HOLD NEXT button during the measurement Doing so will cause the word HOLD to appear at the top of the display Pressing the FUNC HOLD NEXT button again releases the hold 2 To record and recall readings press the REC ENTER button while making measurements This will make the term REC appear at the top of the display Pressing the REC ENTER button again briefly will make the term MAX appear to the right of REC and switch the display to the maximum value stored in memory during the last recording session Pressing the REC ENTER button again briefly will make the term MIN appear to the right of REC and switch the display to the minimum value stored during the last session 3 To exit recording mode press and hold the REC ENTER
17. ual logging and changing of card storage location e Comes with 2 GB SD memory card but works with cards up to 16 GB e Big 2 5 in diagonal front panel green backlit LCD is easy to read e Auto power off function e Powered by six AA batteries or 9V AC DC adapter OPERATING INSTRUCTIONS WHAT S IN THE CASE The UV254SD comes fully assembled in a carrying case along with a UVA probe a UVC probe a 2 GB SD memory card and this user s manual Figure 1 shows all of the controls and indicators on the front back top bottom and right side of the UV254SD It also shows the main components of the supplied UVA and UVC probes Familiarize yourself with their positions and functions before moving on to the setup procedure TOP rte OF 18 lt N mO FRONT 4 2 1 5 4 17 U BOTTOM RIGHT BACK UVC 4 9 SIDE PROBE UVA PROBE Fig 1 The controls and indicators and other physical features of the UV254SD and its two supplied probes 1 1 Liquid crystal display 1 2 POWER ESC button 1 3 FUNC HOLD NEXT button 1 4 REC ENTER button 1 5 SET W button 1 6 LOGGER A button 1 7 Socket for UVA and UVC probes 1 8 Socket for Type K or Type J thermocouple 1 9 SD card socket 1 10 RS232 output jack 1 11 RESET button 4 1 12 Socket for 9VDC AC adapter 1 13 Battery compartment cover 1 14 Battery compartment cover screws 1 15 Kickstand 1 16 Tripod attachment nut 1 17 UVC probe plug 1 18 UVC senso
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