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INTRODUCTION This instrument is a 4½ digit, compact-sized portable digital thermometer designed to use external K-type and J-type thermocouples as temperature sensor. Temperature indication follows Reference Temperature/Voltage Tables (N.I.S.T. Monograph 175 Revised to ITS-90) for K-type and J-type thermocouples. One K-type thermocouple are supplied with the thermometer. SAFETY INFORMATION It is recommended that you read the safety and operation instructions before using the thermometer.
SPECIFICATIONS ELECTRICAL Temperature Scale: Celsius or Fahrenheit user-selectable Measurement Range: J-TYPE -200°C to 1050°C, (-328°F to 1922°F) K-TYPE -200°C to 1370°C, (-328°F to 2498°F) Resolution: 0.1°C or 0.2°F Accuracy: Accuracy is specified for operating temperatures over the range of 18°C to 28°C (64°F to 82°F), for 1 year, not including thermocouple error. ±(0.05% rdg + 0.3°C) -50°C to 1370°C ±(0.05% rdg + 0.7°C) -50°C to -200°C ±(0.05% rdg + 0.6°F) -58°F to 2498°F ±(0.05% rdg + 1.
ENVIRONMENTAL Ambient Operating Ranges: 0°C to 50°C (32°F to 122°F) <80% R.H. Storage Temperature: -20°C to 60°C (-4°F to 140°F) <70% R.H. GENERAL Display: 4½ digit liquid crystal display (LCD) with maximum reading of 19999. Overload: "----.-" is display. Battery: Standard 9V battery. Battery Life: 100 hours typical. Auto power off: The meter key switch inactive for more than 30 minutes, press power key to resume operation. Dimensions: 192mm(H) x 91mm(W) x 52.5mm(D) Weight: 365g.
OPERATING INSTRUCTIONS 1 Power Switch The key turns the thermometer on or off. In the data SET mode, can not power off, must leave data SET mode then power off. 2 °C/°F Selecting the Temperature Scale Readings are dual displayed in either degrees Celsius(°C) or degrees Fahrenheit(°F). When the thermometer is turned on, it is set to the temperature scale that was in use when the thermometer was last turned off. To change the temperature scale, press the °C/°F key.
4 Cold Junction Temperature Display mode (second display) Press C.J. TEMP key to display the thermocouple input connector cold junction temperature on second display. Press C.J. TEMP key again to exit this mode. 5 K/J T1 Input Thermocouple Type Select The K/J key switch the thermocouple input selects the K-type or J-type thermocouple as input. When the thermometer is turned on, it is set to the type selected that was in use when the thermometer was last turned off.
The true average of all the reading taken over at least 22 hours preiod can be displayed. If 22 hours is exceeded, new averages are no longer calculated. The last calcalated value is retained as the average reading, but the actual minimum and maximum reading will continue to be captured. In the this mode, press HOLD key to stop the recording of readings, all values are frozen, press again to restart recording.
8 Sec. Minu. Selecting the Time scale Reading the third displayed (Time) in either second or minute. When the thermometer turned on, it is set to second. To change the Time scale, press Sec. Minu. key. Maximum Time reading is 100 hours. If 100 hours is exceeded, reset Time to zero and restart. 9 SET mode (Relative value set, Time set and Hi/Lo Limits value set) 1. Press SET key to enter Relative valuse SET mode (Press ENTER key can escape relative valuse set mode), REL set mode. = = = =.
4. When the thermometer is turned on. The Relative set value and Hi/Lo Limits set value that was in use when thermometer was last turned off set values. 10 Relative value Recall display mode. Press REL RECALL key to display the Relative set value on second display. Press REL RECALL key again to exit this mode. 11 Hi/Lo Limits value Recall display mode Press Hi/Lo RECALL key to display the Hi set Limit value on second display.
OPERATOR MAINTENANCE WARNING To avoid possible electrical shock, disconnect the thermocouple connectors from the thermometer before removing the cover. Battery Replacement Power is supplied by a 9 volt "transistor" battery. The " " appears on the LCD display when replacement is needed. To replace the battery, remove the two screws from the back of the meter and lift off the battery cover. Remove the battery from battery contacts.
CALIBRATION PROCEDURE Note: The following calibration procedures should be performed only by qualified technicians who have access to the following: Equipment: The class of calibration should be 10 times greater than the measured meter. Step 1: Short the J3 with jumper. Step 2: Apply 65 mV to the T1 input from Volts Calibrator and wait till the reading becomes stable, then press the SET key until the display shows 0.1.
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WARRANTY / DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product. If the unit malfunctions, it must be returned to the factory for evaluation.
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