Table of Contents 4 7 8 10 12 16 16 17 17 18 18 19 19 19
Contents
1. 4 Press ENTER to turn the high limit alarm off the display shows OFF Press ENTER Holding down A or V causes the number to change more quickly again to turn the high limit alarm on the display shows the high limit alarm reading When the tested temperature is over the limit the thermometer beeps The maximum reading of high alarm is the maximum measuring range of each type of thermocouple The minimum reading of the high alarm is either the low alarm reading plus 1 or the minimum reading of measuring range of each type of thermocouple 21 Model ST620B OPERATING MANUAL For example gt The maximum reading of the high alarm of K type is 1372 C The minimum reading of the high alarm of K type is either the low alarm reading plus 1 or 200 C Below table shows the measuring range of each type of thermocouple K type 200 0 C to 1372 C 328 0 F to 2501 F J type 210 0 C to 1200 C 346 0 F to 2192 F T type 250 0 C to 400 0 C 418 0 F to 752 0 F E type 150 0 C to 1000 C 238 0 F to 1832 F 22 Model ST620B OPERATING MANUAL Enabling or Disabling Over Limit Signal Output 1 Press SETUP until the display shows SI 2 Press Aor Y to turn the over limit signal output on or off The display shows on or oFF 3 After setting the high or low limit alarm and turning on the over limit signal output the SIGN port of the thermometer will output the corresponding signal2. store feature will be disabled 17 Model ST620B OPERATING MANUAL Changing the Thermocouple Type 1 Press SETUP until the display shows TYPE 2 Press A or Wto select the thermocouple type you want including K J E R S and N type Changing the Offset T1 1 Press SETUP until the display shows OFFSET and T1 2 Press A or V until the display shows the correct reading The offset readings range 18 Model ST620B OPERATING MANUAL Sleep Mode 1 2 3 4 Press SETUP until the display shows SLP Press Aor Vas need until the display shows the correct sleep mode time you want it is between 5 60 minutes Holding down Aor Wcauses the time to change more quickly When the sleep mode time is less than 5 minutes the display shows OFF which means disabling the sleep mode Changing the Line Frequency 1 2 Press SETUP until the display shows LINE Press A or V to select 60Hz or 50Hz Setting the Time D Press SETUP until the display shows S T Press ENTER to toggle between minutes second m s and hour minutes h m Press A or V until the display shows the correct time The time is 24 hour format Holding down A or V causes the number to change more quickly The system time is the current meter running time if there is no changing on this setup option The system time is counted when the user turning on the thermometer It zeros automaticaly when the electricity is cut
3. type of thermocouple s to be same of the type plug into the input connector s If no thermocouple is plugged into the selected input or the thermocouple is open and the over range positive deviation is too big the display shows _ Changing Setup Options 9 Use Setup to change the following settings 9 Logging intervals Thermocouple types Offset T1 gt gt Sleep Mode p Line Frequency gt Time S T Low Limit Alarm Lo gt High Limit Alarm Hi mp Over Limit Signal Output SI ON OF F Normal Temperature Compensation NTC ON OFF DEBUG ON OFF gt Save setting and return to normal measurement mode 16 Model ST620B OERATING MANUAL Entering and Exiting Setup When the thermometer is in Setup mode the display shows and blinks SETUP e Press SETUP to start or exit Setup Press SETUP to scroll the Setup option you want to change after Changing the Logging Interval The logging interval determines how often the thermocouple stores logged readings in memory You choose the length of the logging interval See Using Memory Press SETUP until the display shows INTERVAL The thermometer stores logged readings at the end of each logging interval You can select a logging interval by pressingAor Holding downAor causes the number to change more quickly The maximum interval is 59 59 and the minimum interval is 00 00 When the logging interval is 00 00 you need to store the readings manually as the auto
4. 19 Model ST620B OPERATING MANUAL Setting the Low limit Alarm Lo Q N Oi Press SETUP until the display shows Lo Press A or V until the display shows the correct low limit alarm Holding down A or V causes the number to change more quickly Press ENTER to turn the low limit alarm off the display shows OFF Press ENTER again to turn the low limit alarm on the display shows the low limit alarm reading When the tested temperature is over the limit the thermometer beeps The minimum reading of low alarm is the minimum measuring range of each type of thermocouple The maximum reading of the low alarm is either the high alarm reading minus 1 or the maximum reading of measuring range of each type of thermocouple For example gt The minimum reading of the low alarm of K type is 200 C The maximum reading of the low alarm of K type is either the high alarm reading minus 1 or 1372 C 20 Model ST620B OPERATING MANUAL Below table shows the measuring range of each type of thermocouple K type 200 0 C to 1372 C 328 0 F to 2501 F J type 210 0 C to 1200 C 346 0 F to 2192 F T type 250 0 C to 400 0 C 418 0 F to 752 0 F E type 150 0 C to 1000 C 238 0 F to 1832 F Setting the High Limit Alarm Hi 1 ou Press SETUP until the display shows Hi 2 Press A or V until the display shows the correct high limit alarm 3
5. 620B OPERATING MANUAL Buttons REGAL C4 J OY O s Figure 3 a ST620B button set 12 Page Left Intentionally Blank 13 Model ST620B OPERATING MANUAL Table 5 Buttons Press to turn the thermometer on or off ver Press to turn the display back light on and off C FK Press to switch between Celsius C Fahrenheit F and Kelvin MAX MIN Press to step through the maximum minimum and average readings Press and hold to turn off this display TYP Press to step through K J T E R S N type thermocouple SEND Press to enter USB mode and the USB icon blinks Press again to exit STORE Press to start or stop logging See Using Memory Starting and Stopping Logging Press to show logged readings RECALL press again to stop 14 Model ST620B OPERATING MANUAL Table 5 Buttons Press to start or exit Setup SETUP Press to scroll the Setup option you want to change See Changing Setup Options A After entering the Setup mode press to increase the displayed setting See Changing Setup Options After entering the Setup mode press to decrease the displayed setting v See Changing Setup Options Confirm button See Changing Setup Options 15 Model ST620B OPERATING MANUAL Using the Thermometer 1 Plug the thermocouple s into the input connector s 2 Press the power button to turn on the thermometer 3 Set the
6. Case Use soap and water or mild commercial cleaner Wipe with a damp sponge or soft rag 32 Model ST620B OPERATING MANUAL Specifications Environmental 10 C to 50 C ting T t Operating Temperature 14 F to 122 F Storage Temperature 40 C to 60 C 14 to 140 C Humidity Non condensing lt 10 C lt 50 F 95 RH 10 C to 30 C 50 F to 86 F 75 RH 30 C to 40 C 86 F to 104 F 45 RH 40 C to 50 C 104 F to 122 F General Certification Safety EN61326 2006 EN55022 2006 and EM55024 1998 A1 A2 33 ST620B OPERATING MANUAL Electrical Function ST620B Input Protection Type K J T E R S N Input T1 K type 200 0 C to 1372 C 328 0 F to 2501 F Measurement Jetype 210 0 C to 1200 C 346 0 F tor 2192 F Range T type 250 C to 400 0 C 418 F to 752 0 F E type 150 0 C to 1000 C 238 0 F to 1832 F 30V Display 0 19C F K 1000 T type below 2009 C and R Resolution type S type is 19C9F K 1 0 C F K gt 1000 K J T E type Measurement 0 2 0 6 C 1 2 F Accuracy 0 5 0 8 1 6 R S type 0 2 2 C 4 F N type 0 2 1 5 C 3 F 34 Model ST620B OPERATING MANUAL Function ST620B Input Protection Below 10 C add 0 5 C hs Below 200 C add 2 C PETS Type T Below 200 C for reference only
7. ST620B OPERATING MANUAL Table of Contents Title Page Safety Information 4 Getting Started 7 Components 8 Display Elements 10 Buttons 12 Using the Thermometer 16 Changing Setup Options 16 Entering and Exiting Setup 17 Changing the Logging Interval 17 Changing the Thermocouple Type 18 Changing the Offset T1 18 Sleep Mode 19 Changing the Line Frequency FR 19 Setting the Time 19 Setting the Low Limit Alarm Lo 20 Setting the High Limit Alarm Hi 21 ST620B OPERATING MANUAL Title Page Enabling or Disabling Over Limit Signal Output d Eo 23 Enabling or Disabling Normal Temperature NTC 23 Enabling or Disabling Debug 24 Measuring Temperatures x 25 Connecting a Thermocouple 25 Displaying Temperatures 26 Holding the Displayed Temes s 26 Turning on and off of display backlight 26 Viewing the MIN MAX and AVG Readings 26 Using the Offset to hii Probe Errors 27 Over Limit Alarm c RA 27 Over Limit sional 27 Debug 28 Using Memory 29 Starting and Sto
8. Sampling Rate 50 times per second Updates 2 3 times per second Time Relative Time Data Store 0 99 sets Logging Interval Thermocouple Type Offset T1 omy Sleep Mode Setup Line Frequency Time High Low Limit Over Limit Signal Output Normal Temperature Compensation Debug Over Limit Alarm YES Over Limit Signal YES Power One piece of 9V NEDA1604 or 6F22 or PP3 35 Model ST620B OPERATING MANUAL Accuracy is specified for ambient temperatures between 18 C 60 F and 28 C 82 F for a period of 1 year operating temperatures 10 C 50 C 14 F 122 F The above specifications do not include thermocouple error probe tolerance is not included in above technical index END 36 37
9. d the connectors Disconnect the thermocouple s from the thermometer before opening the case e Replace the batteries as soon as the battery indicator Edl appears The possibility of false readings can lead to personal injury e Do not use the thermometer if it operates abnormally Protection may be impaired When in doubt have the thermometer serviced Do not operate the thermometer around explosive gas vapour or dust Do not apply more than the rated voltage as marked on the thermometer 30V between the thermocouple s or between any thermocouple and earth ground When potential differences are anticipated between the thermocouples use electrically insulated thermocouples When servicing the thermometer use only specified replacement parts Do not use the thermometer with any part of the case or cover removed Model ST620B OPERATING MANUAL Caution A caution identifies conditions and actions that may damage the meter or the equipment under test e Use the proper thermocouples function and the range of your thermometer e When carrying two thermocouples measurement make sure there are no potential differences between two thermocouples e Do not attempt to recharge the battery e Match the and polarities of the battery with the battery case Table 2 International Symbols A Refer to the manual for information about this feature C Complies with European Union direc
10. erature readings The stored readings are from primary display Starting and Stopping Logging 1 Set the logging interval See Changing Setup Options 2 Press STORE to start logging The display blinks DATA 3 Press STORE again to stop logging 4 If you selected a manual logging interval set the logging interval as 00 00 Press ENTER each time you want to store logged readings in memory The secondary 29 ST620B OPERATING MANUAL display 1 shows the logged reading Each presses of ENTER will automatically store the logged readings the next memory location Press V could change the memory location the empty location shows E If you selected an auto logging interval set the logging interval not 00 00 After entering logging mode the secondary display 2 shows Press ENTER to start storing readings in sequence according to the pre set logging interval the blinks Press ENTER again to pause auto logging the stop blinking Press ENTER again to resume logging the blinks again Viewing Logged Readings 1 2 Press RECALL to view logged readings The display shows RCL and blinks Press A or V to scroll through the logged readings the default reading is the last stored reading when exiting the logging The recalled reading will automatically toggle to the measurement unit when logging The logged readings will automatically toggle to the temperature unit durin
11. g logging The secondary display 1 shows its memory location The secondary display 2 shows its time stamp The primary display shows each logged reading Press ENTER causes the readings to change more quickly until memory location reaches 99 30 ST620B OPERATING MANUAL Clearing Memory 1 Press STORE to enter logging mode the display shows DATA and blinks 2 Press and hold down STORE 2 seconds the display shows CLR 3 Press ENTER to delete all the logged readings from memory It is not possible to delete the logged readings one by one The display then shows Communicating with a PC You can transfer the contents of the thermometer s memory to a PC using the included Software Press SEND button and USB blinks on the display It means the thermometer and the PC are connected correct Details refer to the Installation Guide file in the Software Under the influence of radiated Radio Frequency electromagnetic Field phenomenon the captioned model have a measurement error it will be back to normal when the interference is removed 31 ST620B OPERATING MANUAL Maintenance Replacing the Battery Replace the batteries as soon as the battery indicator 8 appears The possibility of false readings can lead to personal injury 1 Turn off the thermometer 2 Loosen the screw and remove the battery door 3 Replace 1 piece of 9V battery 6F22 PP3 Replace the battery door and tighten the Cleaning the
12. if the tested temperature is over or under the high or low limit When the tested temperature is over the high limit the SIGN port will output the high electric level signal When the tested temperature is under the low limit the SIGN port will output around 10Hz pulse signal Enabling or Disabling Normal Temperature Compensation NTC 1 Press SETUP until the display shows NTC 2 Press Aor V to turn normal temperature compensation on or off The display shows 23 Model ST620B OPERATING MANUAL Enabling or Disabling Debug Press SETUP until the display shows DEBUG 2 Press A or V to turn Debug on or off The display shows on or oFF The thermometer is default as oFF 3 You can self debug the thermometer when the Debug feature is turned on Refer to Measuring Temperatures Debug 24 ST620B OPERATING MANUAL Measuring Temperatures Connecting a Thermocouple Thermocouples are colour coded by type based on the North American ANSI Colour Code Type Colour Type Colour J Black R Green K Yellow S Green T Blue N Orange E Purple 1 Plug a thermocouple into the input connector s 2 Set the thermometer for the correct thermocouple type To change the thermocouple type see Changing Setup Options 25 ST620B OPERATING MANUAL Displaying Temperatures 1 Press C F K to select the correct temperature scale 2 Hold or attach the thermocouple s to the measurement locati
13. on The temperature reading appears in the selected display Holding the Displayed Temperatures 1 Press HOLD to freeze the readings on the display The display shows HOLD 2 Press HOLD again to turn off the HOLD function Turning on and off of display backlight 1 Under temperature measurement mode press to turn the display backlight on 2 Press V again to turn off the display backlight The display backlight will not automatically off Viewing the MIN MAX and AVG Readings 1 Press MIN MAX to step through the maximum MAX minimum MIN or the average AVG readings 2 Press and hold MIN MAX to exit MIN MAX mode 26 Model ST620B OPERATING MANUAL Using the Offset to Adjust for Probe Errors Use the offset option in Setup to adjust the thermometer s readings to compensate for the errors of a specific thermocouple 1 Plug the thermocouple into the input connector 2 Place the thermocouple in a known stable temperature environment such as an ice bath or a dry well calibrator 3 Allow the readings to stabilize 4 In Setup change the offset until the display reading matches the calibration temperature See Changing Setup Options Over Limit Alarm Setting the low alarm and high alarm limit at the SETUP mode the thermometer beeps when the measured temperature is higher or lower than the pre set limit See Changing Setup Options Over Limit Signal Output Setting the low and high limit signal output at
14. pping lagano 29 Viewing Logged Readings 30 Clearing Memory _ _ 31 Communicating with a PC 31 Model ST620B OPERATING MANUAL Title Maintenance I Replacing the Baltoiy Cleaning the Case Specifications Environmental General Electrical Model ST620B OPERATING MANUAL Safety Information The ST620B Digital Hand Held Pyrometer is a microprocessor based digital thermometers designed to use external J K T E R S and N type thermocouples temperature probes as temperature sensors Suitable for K J T E R S and N type thermocouples Equipped with over limit alarm over limit signal output and user self debug features Use the thermometer only as specified in this manual Otherwise the protection provided by the meter may be impaired Model ST620B OPERATING MANUAL Refer to safety information in Table 1 and the international symbols in Table 2 Table 1 Safety Information A Warning A warning identified conditions and actions that pose hazards to the user To avoid electrical shock or personal injury follow these guidelines Before using the thermometer inspect the case Do not use the thermometer if it appears damaged Look for cracks or missing plastic Pay particular attention to the insulation aroun
15. the SETUP mode the SIGN port output the corresponding signal when the measured temperature is higher or lower than the pre set limit See Changing Setup Options 27 Model ST620B OPERATING MANUAL DEBUG MODE After entering the Debug mode you can self debug Below is the procedure Debug point K and J type 180 C 0 C and 900 C T type 180 C 0 C and 400 C E type 140 C 0 C and 900 C R and S type 0 C and 1200 C N type 180 C 0 C and 1200 C Remark 0 C only need to debug k type e Debug method 1 Connect T1 and T2 to standard voltage source 2 Standard voltage source input the corresponding voltage of debug point 3 Press HOLD to freeze the debug data 4 Normal Temperature debug Press MAX MIN when the thermometer is at Debug mode secondary display 1 shows the offset reading Secondary display 2 shows the normal temperature Press A or to adjust the offset reading the offset range is 6 6 28 Model ST620B OPERATING MANUAL Remark The corresponding table between temperature and voltage refer to BS EN 60584 1 1996 Before carrying out debug to ensure your standard source has enough accuracy It is at your own responsibility if the thermometer has too big accuracy deviation is caused by the standard source does not have enough accuracy Using Memory During a logging session the thermometer stores logged readings in its memory The thermometer stores 00 99 total 100 sets of temp
16. tives ca Battery Model ST620B OPERATING MANUAL Getting Started Everything in this Users Manual applies to all Model ST620B To become familiar with the thermometer study the following Figure 1 and Table 3 describe the components e Figure 2 and Table 4 describe the display e Figure 3 a and 3 b and Table 5 describes the functions of the buttons Then read the following sections Model ST620B OPERATING MANUAL Components Figure 1 Components 8 Model ST620B OPERATING MANUAL Table 3 Components Display Buttons Thermocouple T1 input N A USB Port SIGN Port Over Limit Signal Output Battery Door 9V battery 6F22 PP3 Model ST620B OPERATING MANUAL Display Elements FRE 9 1112 V HOLD TYPE KJTERSN 0 2699 E FFSET DE INTERVAL Eo ies Figure 2 Display Elements 10 Model ST620B OPERATING MANUAL Table 4 Display Elements Setup is in progress when the icon blinks Display readings of maximum minimum and average Data Transferring is in progress Logged readings are displayed when the icon blinks The thermocouple type The temperature units Secondary Display 1 The thermocouple measurement includes an offset See Changing Setup Options Readings are being logged when the icon blinks Primary Display The symbol of display backlight 11 Model ST
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