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Troubleshooting
Related Manuals for Digi-Sense Dual J-T-EK 60010-40
Summary of Contents for Digi-Sense Dual J-T-EK 60010-40
- Page 1 Digi Sense ® THERMOCOUPLE THERMOMETER Dual J-T-E- ® MODEL NO. 60010-40 Digi Sense ® Eutech Instruments Pte Ltd Blk 55 Ayer Rajah Crescent #04-16 Singapore 139949 Tel: (65) 6778 6876 Fax: (65) 6773 0836 Website: www.eutechinst.com email: marketing@eutechinst.com 68X309907 Rev.1 12/03...
- Page 2 INTRODUCTION This versatile hand-held instrument provides highly accurate temperature measurements in Celsius, or Fahrenheit, using a wide range of thermocouple types. The temperature range for each type ther- mocouple is listed in the following chart. °C °F TYPE –200 to 1000 –328 to 1832 –250 to 1372 –418 to 2501...
- Page 3 The instrument is designed for easy operation and includes the following features: • Operator selection of temperature scale • Resolution of 0.1° from −150°C to 999.9°C (−238°F to 999.9°F) • LCD with three four-digit displays • Two (2-blade female) ANSI mini-connector inputs •...
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Page 4: Safety Precautions
SAFETY PRECAUTIONS THIS INSTRUMENT IS WARNING DESIGNED TO ACCEPT LOW LEVEL SIGNALS SUPPLIED BY STAN- DARD THERMOCOUPLES. UNDER NO CIR- CUMSTANCES SHOULD THE INPUT VOLTAGE EXCEED THE SPECIFIED 50V RMS. DO NOT USE OR STORE CAUTION THIS INSTRUMENT IN MICROWAVE OVENS OR ANY ABNORMALLY HOT OR COLD AREAS. -
Page 5: Specifications
SPECIFICATIONS THERMOCOUPLE PROBES Type Temperature Range Type J: –200°C to 1000°C (–328°F to 1832°F ) Type K: –250°C to 1372°C (–418°F to 2501°F ) Type T: –250°C to 400°C (–418°F to 752°F ) Type E: –250°C to 1000°C (–418°F to 1832°F ) Accuracy >... - Page 6 Temperature/Humidity Range Operating: Stated Accuracy: 18°C to 28°C (64°F to 82°F) Useful Range: 0°C to 40°C (32°F to 104°F) −40°C to 65°C Storage: (−40°F to 149°F) Humidity: 10% to 90% (non-condensing) Dimensions 3 cm D x 8.4 cm W x 15.8 cm H (1.2 in x 3.3 in x 6.2 in) Weight with batteries: 227 grams (8 ounces) Ingress protection: Meets IEC-529 IP-54 for dust...
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Page 7: Battery Installation And Replacement
BATTERY INSTALLATION AND REPLACEMENT WEAK BATTERIES SHOULD CAUTION NOT BE LEFT IN THE INSTRUMENT. DEAD BATTERIES CAN LEAK AND CAUSE DAMAGE TO UNIT. VOLTAGES PRESENT AT DANGER THE THERMOCOUPLES MAY ALSO BE PRESENT AT THE BATTERY TER- MINALS. ALWAYS DISCONNECT THE THERMO- COUPLE WHEN CHANGING BATTERIES. - Page 8 If battery indicator turns on, battery life is approxi- mately 8 to 10 hours. The battery indicator will start blinking with less than 1 hour of life remaining. AT THIS POINT BATTERY MUST BE CHANGED. IF BATTERY VOLTAGE GOES TOO LOW, DIS- PLAY WILL GO BLANK.
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Page 9: Connecting A Thermocouple
CONNECTING A THERMOCOUPLE Note: Be sure your instrument setting (J, T, E or K) matches the thermocouple you are using. Use the correct thermocouple type for your instru- ment. Using an incorrect thermocouple type will result in erroneous readings. Thermocouples are color coded by type using the North American ANSI color code as follows: TYPE... -
Page 13: Quick Setup
QUICK SETUP Note: Review warnings on page 6. 1. Install batteries. 2. Connect thermocouple(s). 3. Press the ON/OFF key. The thermometer per- forms a self-test and all display digits and indi- cators, as shown below, should remain on for approximately one second. 4. - Page 14 COMPLETE SETUP PROCEDURE The setup procedure is used to select the tempera- ture scale, resolution, and thermocouple type. NOTE Selected settings are stored in memory and will remain in memory even after power is turned off, or while batteries are being replaced. SELECTING TEMPERATURE SCALE Select °C or °F by pressing the °C/ °F key.
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Page 15: Operating Procedures
OPERATING PROCEDURES The unit will always power up with the upper dis- play showing T1 unless T1 is not connected. If only T2 is connected at power up, the upper dis- play shows T2 and the lower left display indicates T1 is open. -
Page 16: Maximum Readings
Dual Probe Measurements The thermometer will automatically determine if one or two thermocouples are connected. When two thermocouples are connected, the upper main dis- play will initially show T1 and the lower right dis- play will show T2. Pressing the T1/T2 key once will cause the upper display to show T2 and the lower left display to show T1. - Page 17 Single Probe Measurements The displayed information depends on whether you are using a single probe in the dual probe mode or have changed to the single probe differential mode by pressing the T1/T2 key. If you are using a single probe and in the dual probe mode, momentarily press the MAX ▲...
- Page 18 Dual Probe Measurements Momentarily press the MAX ▲ ▲ ▲ ▲ ▲ key. The MAX an- nunciator turns on, and both maximum T1 and T2 readings appear in the lower display. The T1 read- ing is on the left display and the T2 reading is on the right display.
- Page 19 Single Probe Measurements The displayed information depends on whether you are using a single probe in the dual probe mode or have changed to the single probe differential mode by pressing the T1/T2 key. If you are using a single probe and in the dual probe mode, momentarily press the MIN ▼...
- Page 20 DIFFERENTIAL READINGS (T1-T2) The differential function is used to compare two different measurements and display the difference between them. Differential measurements can be made using either one probe or two probes. Single Probe Measurements For single probe measurements, one measurement is stored as the reference measurement, then each following measurement is compared to the refer- ence.
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Page 21: Hold Function
Dual Probe Measurement 1. Connect the two probes to the two points of measurement. The lower left display will indicate the T1 temperature, the lower right display will indicate the T2 temperature. 2. The main display can be scrolled between dis- playing T1, T2 or the differential temperature T1- T2 by repeatedly pressing the T1/T2 key. -
Page 22: Recall Readings
1. Momentarily press the STORE key. Both T1 and T2 are stored. The upper main display will mo- mentarily show the storage location number and the STO annunciator will be on. After three seconds the storage number will be re- placed with the temperature reading but the STO annunciator remains on to indicate a temperature reading has been stored. - Page 23 CALIBRATION The calibration function allows both single point and dual point calibration of the thermometer. Single point calibrates the offset only. Dual point calibrates the offset first then calibrates the slope. The ther- mometer can be calibrated at any temperature. When two probes are used, a match calibration matches the T1 and T2 offsets.
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Page 24: Calibration Procedures
When calibrating at freezing (0°C or 32°F) it is rec- ommended to use crushed ice made of distilled water in a dewar flask. Add crushed ice to top of flask. Top off flask with distilled water. Continue to add crushed ice to maintain tightly packed crushed ice/water in flask. - Page 25 3. Allow the reading to stabilize. If the displayed temperature is higher or lower than the reference temperature, use the MAX ▲ ▲ ▲ ▲ ▲ key to increase the displayed reading or the MIN ▼ ▼ ▼ ▼ ▼ key to de- crease the displayed reading until the reference temperature is displayed.
- Page 26 Calibration Procedure (Two Probes Detected) This calibration function provides for both an offset and slope field calibration of either or both T1 and T2. For proper calibration the following conditions must be observed: • The slope point must be a higher temperature than the offset point.
- Page 27 5. Allow the reading to stabilize. If the displayed temperature is higher or lower than the refer- ence temperature, use the MAX ▲ ▲ ▲ ▲ ▲ key to in- crease the displayed reading or the MIN ▼ ▼ ▼ ▼ ▼ key to decrease the displayed reading until the reference temperature is displayed.
- Page 28 11. Press the HOLD key to lock the T2 slope calibration in, or press the CAL key to skip T2 slope calibration. In either case you will now be in T1 = T2 offset calibration. To return to normal operation press any key except CAL key or HOLD key.
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Page 29: Field Calibration Lockout And Re-Enable
FIELD CALIBRATION LOCKOUT AND RE-ENABLE The calibration lockout feature, prevents any field calibration changes. The lockout remains in effect until a lockout re-enable has been performed. Use the following procedures to lockout or re-enable the field calibration operation. Lockout Procedure 1. -
Page 30: Maintenance And Troubleshooting
MAINTENANCE AND TROUBLESHOOTING Properly used, the thermometer should maintain calibration indefinitely and not require service other than occasional cleaning of the housing and chang- ing of the batteries. TO PREVENT IGNITION OF WARNING A HAZARDOUS ATMOS- PHERE BY ELECTROSTATIC DISCHARGE, CLEAN WITH DAMP CLOTH. -
Page 31: Intrinsic Safety
SERVICE SUBSTITUTION OF COM- WARNING PONENTS MAY IMPAIR INTRINSIC SAFETY. LA SUBSTITUTION DE AVERTISSEMENT COMPOSANTS PEUT COM- PROMETTRE LA SECURITE INTRINSEQUE. There are no internal adjustments or user replace- able parts. Note: Serial number label is located inside battery compartment. -
Page 32: Troubleshooting
TROUBLESHOOTING The following chart lists the most probable faults. There are no internal adjustments or user-replace- able parts. If this does not solve the problem, refer service to your dealer. FAULT ACTION No display when Check condition of turned on. batteries. -
Page 33: Warranty
WARRANTY The Manufacturer warrants this product to be free from significant deviations from published specifications. If repair or adjustment is neces- sary within the warranty period, the problem will be corrected at no charge if it is not due to mis- use or abuse on your part as determined by the Manufacturer.
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