Manual for 12 Channel Data Logging
Contents
1. HINKE MONKI DMG MITT WITE AO TLR Tape B AANE HANKE 5 HDG AAC SI A KK 511 DATK A TIA Tape 5 HACE 221 H 5 Fig 2 Typical Excel data only screen BRREPLSELARRAASSSSSHESRRERARARRARRERRETES SRSA ARRFRRERRRSRRRES2SS83353335288288225832583582 ee eee eee eee Fig 3 Typical Excel graphics only screen SPECIFICATIONS Embedded microcontroller Display type Display size Custom one chip LSI device Liquid crystal with green backlight 2 05 x 1 5 in 52 x 38mm Parameter measured Temperature in F or C Measurement range Measurement accuracy With Type K thermocouples 148 to 2372 F 100 to 1300 C With Type J 148 to 2102 F 100 to 1150 C With Type T 148 to 752 F 100 to 400 C With Type E 148 to 1652 F 100 to 900 C With Type R 32 to 3092 F 0 to 1700 C With Type S 32 to 2732 F 0 to 1500 C With Types K J T and E thermocouples 0 4 of reading 2 0 F max With Types R and S 0 5 of reading 2 0 F Measurement resolution With Types K J T and E thermocouples 0 1 F or C below 1000 F 1 F or C above 1000 F With Types R and S 1 F or C Sampling2. message to disappear from the top line of the display 7 To execute the loop data recording function if the function was enabled during setup press the REC ENTER button while the instrument is in measurement mode Doing so makes the term REC appear at the top of the display and prepares the instrument to log data during the specified daily period 8 To pause loop data recording during the specified period press the LOGGER button once This will make the term REC stop flashing Pressing the LOGGER button again resumes loop data recording 9 To end loop data recording press the REC ENTER button and hold it for at least three seconds This causes the REC term to disappear from the display and ends datalogging TRANSFERRING DATA FROM THE SD CARD A COMPUTER After automatic or manual datalogging of measurements or loop data recording remove the SD card from the instrument and plug it into your computer either directly if it has an SD card slot or through an SD card reader Because the files containing time stamped data logs have the file extension xls they open in Microsoft s Excel application Figures 2 and 3 show two kinds of Excel presentation a data only screen and a graphics only screen me T w W 5 LOMU 505 AIT LOMU HAT
3. at a time The instrument also can be configured to automatically record up to 12 channels during the same period every day a function called loop data recording Although thermocouples are not as accurate as other types of thermometers they more than make up for this shortcoming with an extended measurement range For example the DT4208SD can measure and read out temperatures from 148 to 2372 F 100 to 1300 C using Type K thermocouples and temperatures from 148 to 2102 F 100 to 1100 C using Type J thermocouples Type R and Type S thermocouples have an even higher upper limit These very wide ranges plus a fast response time and a low price tag suit thermocouple thermometers for a variety of commercial and industrial tasks requiring measurement of very high and low temperatures Examples include applications in the food and chemical processing industries HVAC heating ventilation and air conditioning power generation and paper production Because it is microprocessor based the DT4208SD can make full use of the portability reliability and large storage capacities that SD memory cards offer Measurements can be made automatically at any sampling rate 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 plug it into to a laptop or desktop computer either directly or through an SD card r
4. line again use the or Page W button to navigate to the current day and press the REC ENTER button to store the setting 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 button again To move ahead to the next field in the sequence or to the next parameter press the HOLD NEXT button Once you have set the date the display will prompt you to set the hour minute and second of the current time in 24 hour format in the right column Again use the Type or Page W buttons to navigate to the correct values and the REC ENTER button to store the settings 4 Set the start and end times for loop recording logging 12 channels of temperature information during the same period for example 14 15 to 15 30 every day Once you have set the date and time the display will show the flashing term LooP Press the REC ENTER button and then use the A and Page W buttons to set the first of the four values that define the loop the starting hour Press the REC ENTER button to store your selection Then use the A and Page W buttons to set the loop s starting minute Again press the REC ENTER button to store your selection Repeat this sequence twice more to set and store the loop s ending hour and minutes values you have entered the fourth value the loop s ending minute the following screen wil
5. optional accessories into the jacks on the top of the thermometer As with Type K thermocouples display readings are instantaneous Use the Page W button to toggle between displaying Channels T1 through T8 or Channels 9 through 12 as with Type K thermocouples Whenever the thermometer 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 instrument is in measurement mode you also can check the current date and time by briefly pressing the SET which has the words Time check stenciled to its right Doing so causes both values to appear briefly at the lower left of the display HOLDING AND STORING MEASUREMENTS 1 To hold a measured value press the HOLD NEXT button during the measurement Doing so will cause the word HOLD to appear at the top of the display Pressing the 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
6. switch the display to the minimum value stored during the last session 3 To exit recording mode press the REC ENTER button and hold it 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 DT4208SD can automatically log data at a user selected sampling period from 1 second 3 600 seconds one hour To view the sampling time that the instrument has been set up to use press the LOGGER button which has the words Sampling time check stenciled below it once To change the sampling time 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 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 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 messa
7. time options Settable parameters Storable recallable readings 0 1 2 5 10 30 60 120 300 600 1800 or 3600 seconds 0 seconds to 1 hour Date time decimal point or comma decimal division auto power off beep sound loop recording enable or disable temperature unit sampling time Maximum minimum SD card capacity 1 GB to 16 GB Operating temperature 32 to 122 F 0 to 50 C Operating relative 0 to 85 humidity Power source 8 Alkaline AA batteries or optional 9 VDC AC adapter Power consumption 7 5 mADC normal operation with backlight off and SD card not saving data 25 mADC with backlight on and card saving data 36 mADC with backlight on and card saving data Dimensions 8 86 x 4 92 x 2 52 in 225 x 125 x 64mm Weight 2 1 Ib 944g MAINTENANCE amp TROUBLESHOOTING TIPS Keep your probes and thermocouples clean When the icon cx appears in the left corner of the display it s time to replace the eight 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 1 of the setup procedure on page 6 After inserting fresh batteries in the correct orientation tighten the screws to secure the cover If the meter freezes like a computer and buttons become unresponsiv
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9. GENERAL DT4208SD USER S MANUAL 2 Channels 50 Cand Date Lopes TEMPERATURE RECORDER 12 CHANNEL TEMPERATURE RECORDER WITH DATALOGGING SD CARD Please read this manual carefully and thoroughly before using this product TABLE OF CONTENTS IMEFOCHCUON eere cies cece sees eerste esses 3 Key Features 4 Operating 4 11 What s in the Case 4 5 napa mare ane een 6 8 Adjusting Thermocouple Offsets 8 Normal 8 9 Holding and Storing Measurements 9 Automatic vs Manual Datalogging 9 10 Transferring Data from the SD Card to 11 Specifications 12 Maintenance amp Troubleshooting Tips 13 Optional 50 13 Warranty Information 13 Return for Repair Policy 14 INTRODUCTION Thank you for purchasing General Tools amp Instruments DT4208SD 12 Channel Temperature Recorder with Datalogging SD Card Please read this user s manual carefully and thoroughly before using the instrument The DT4208SD is a general purpose handheld instrument that can measure up to 12 channels of temperature with 0 4 accuracy using any of six different types of thermocouple Up to eight channels can be displayed
10. atch the value under SEt Then press the REC ENTER button to store the offset adjustment and return the instrument to measurement mode Repeat the procedure for each thermocouple to be used NORMAL OPERATION 1 To prepare to make measurements power on the DT4208SD and make sure an SD card is firmly seated in the socket on the bottom of the instrument By default the DT4208SD uses Celsius units for temperature measurements If you wish to make Fahrenheit units the default press the SET button to enter the setup procedure and perform Step 8 2 To use Type K thermocouples to measure up to 12 channels of temperature plug one to 12 of them two are supplied others are available for purchase from General into the jacks callout 1 9 of Fig 1 on the top of the thermometer Make sure jack T1 is occupied Because Type K is the instrument s default thermocouple type plugging in the thermocouples will instantly produce eight display readings Any of the eight channels that are not used will show the overrange reading To show the other four of the 12 channels press the W button once To return the display to Channels T1 through T8 press the Page W button again 3 To use Type J E or S thermocouples to measure up to 12 channels of temperature first press the Type A button as many times as necessary until the letter of the thermocouple type you are using appears on the display Then plug one to 12 of the
11. e try resetting the instrument by pushing the RESET button on its right side callout 1 12 of Fig 1 with the end of a paper clip Remove the batteries when storing the instrument for an extended period of time Do not drop or disassemble the instrument or immerse it in water OPTIONAL ACCESSORIES Optional accessories available from General Tools amp Instruments include e Type K thermocouples and probes of various diameters types and measurement ranges e 9VDC adapter for a 110V power supply Types J T E and S thermocouples are widely available from industrial distributors WARRANTY INFORMATION General Tools amp Instruments General s DT4208SD 12 Channel Temperature Recorder 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 attempted 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 fo
12. e 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 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 set up the display will then 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 ADJUSTING THERMOCOUPLE OFFSETS To maximize the accuracy of measurements General strongly recommends that you compensate for offset the small measurement error peculiar to each thermocouple used with the instrument To adjust the offset of a thermocouple press the Type A button until its type appears on the display Then plug the thermocouple into the T1 jack on the top of the thermometer Press the LOGGER OFFSET button hold it for at least three seconds and then release the button i A screen similar to the following should appear 23 7 237 measuring adjust Next use the Type Page W button to adjust value value the value under oFS to m
13. e word bEEP Press the Type amp or W button until the desired setting yES or no is displayed and then press the REC ENTER button to store the selection as the default 8 Select the temperature unit Once the beeper has been enabled or disabled the lower part of the display will show the term t CF Press the Type or Page W 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 default temperature unit has been selected and stored the display will show a value above the letters SP t Press the Type A or 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 Type or Page W button to make a selection Choose yES whenever anew 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 preserv
14. eader The data logs are stored on the card as files with the xls extension which can be opened by Microsoft s Excel application The DT4208SD has a backlit 2 1 2 in diagonal display and is powered by eight AA Alkaline batteries or an optional 9 VDC AC adapter KEY FEATURES e Twelve independent temperature measurement channels e Displays up to eight channels at a time one push of a button switches to Channels 9 through 12 e Works with and automatically temperature compensates for six popular thermocouple types K J T E S and R e Combining thermocouple types extends overall measurement range to 148 to 3092 F 100 to 1700 C e Can automatically log 12 channels of data every day during same period e Big 2 5 in diagonal front panel green backlit LCD is easy to read e Displays maximum and minimum readings and holds any reading e Automatically logs measurements at sampling time settable from one second to one hour e Also supports manual datalogging and changing of SD card storage location e Outputs Excel compatible data logs e Accepts SD memory cards of up to 16 GB capacity e Auto power off function e Powered by eight AA batteries or optional 9V AC DC adapter OPERATING INSTRUCTIONS WHAT S IN THE CASE The DT4208SD comes fully assembled in a carrying case along with a 2 GB SD memory card two Type K thermocouples General SKU TPK500 and this user s manual Optional accessories available from G
15. eneral Tools amp Instruments include e Additional Type K thermocouples of various diameters types and measurement ranges e A 9VDC adapter for a 110V power supply See the Optional Accessories section of this manual for more details Figure 1 shows all of the controls and indicators on the front right side back and top of the DT4208SD Familiarize yourself with the positions and functions of these controls indicators and connectors before moving on to the setup procedure Fig 1 1 The DT4208SD s controls and indicators and other physical features 1 1 Liquid crystal display 1 9 T1 through T12 thermocouple jacks 1 2 POWER ESC button 1 10 SD card socket 1 3 HOLD NEXT button 1 11 RS 232 output jack 1 4 REC ENTER button 1 12 RESET button 1 5 Type A button 1 13 Socket for 9VDC AC adapter 1 6 Page YW button 1 14 Battery compartment cover 1 7 SET button 1 15 Kickstand 1 8 LOGGER button SETUP 1 Choose the power source Before using the DT4208SD make sure it is powered by fresh batteries or an optional 9VDC AC adapter plugged into the bottom jack on its right side callout 1 13 To remove the battery compartment cover callout 1 14 remove the two screws holding it in place Then install eight 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 t
16. ge 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 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 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 5 To change the storage location of manually logged data press the SET 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 Type and Page W 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
17. he supplied 2 GB SD card or another card of 1 GB to 16 GB capacity in the socket on the right side of the instrument callout 1 18 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 DT4208SD press the POWER ESC button and hold it until the instrument responds with a long beep When the temperature recorder 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 button callout 1 8 and hold it for at least five seconds until the word dAtE appears flashing on the top line of the left column of the display Press the REC ENTER button Set the current year by pressing the or Page VW button repeatedly until the correct value appears flashing on the top line of the left column Quickly within three seconds press the REC ENTER button to store the setting The next screen that appears will show the value 01 flashing on the second line Use the Type or Page W button to navigate to the current month and press the REC ENTER button to store the setting When the value 01 begins flashing on the third
18. l appear Star Loo To enable recording of data during the specified loop duration press either the Type or Page W button to change the no to yES and then press the REC ENTER button to store the selection To disable recording press the REC ENTER button without changing the no to a yES 5 Choose a decimal point or comma to represent the decimal division between integers and fractions for example American style 20 88 vs European style 20 88 Once you have set the date and time the display will show the word bASIC above the phrase dEC Press the SET button to make bASIC American style or Euro appear in the upper display as desired Press the REC ENTER button to store the selection as the default 6 Enable or disable auto power off Once the format of decimal point divisions has been set and stored the display will show the word yES over the term PoFF Press the A or Page 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 DT4208SD after a period of inactivity of ten minutes 7 Enable or disable the beeper The next step in the setup sequence turns the thermometer s beeper on or off Once the auto power off function has been enabled or disabled the display will show the word yES over th
19. r 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 5 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 com www generaltools com DT4208SD User s Manual Specifications subject to change without notice 2011 GENERAL TOOLS amp INSTRUMENTS NOTICE WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS MAN DT4208SD 9 1 11
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