OMEGA (MODEL:502) HH502 Digital Thermometer
omega.com TM OMEGAnetSM On-Line Service http://www.omega.com USA: ISO 9001 Certified One Omega Drive, Box 4047 Stamford, CT 06907-0047 Tel: (203) 359-1660 FAX: (203)359-7700 e-mail: info@omega.com Internet e-mail info@omega.com Servicing North America: Canada: 976 Bergar Laval (Quebec) H7L5A1 Tel: (514) 856-6928 FAX: (514) 856-6886 e-mail: info@omega.
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. Two 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 T1 /T2/T1-T2 Main display Input Selection The input selection indicates which input is selected for main display; T1 thermocouple, T2 thermocouple or the difference between the two thermocouples (T1-T2), when the thermometer is turned on, it is set to T1, When main display input selected T1, then T1 input can select alternate of thermocouple by pressing K/J key switch.
In the this mode, press HOLD key to stop the recording of readings, all values are frozen, press again to restart recording. To prevent accidental loss of MIN, MAX and AVG data, in this mode can only be cancelled by pressing and hold down the MIN MAX key for 2 seconds to exit and erased recorded readings. WARNING MIN, MAX and AVG readings can be recorded for a period of up to 20 hours maximum. If this 20 hours period is exceeded the unit readings will not be accurate.
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 T1/T2/T1-T2 second display Input Selection The input selection indicates which input is selected for second display; T1 thermocouple, T2 thermocouple or the difference between the two thermocouples (T1-T2), when the thermometer is turn on, it is set to T2 input can select alternate of thermocouple by second display K/J key switch.
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.
HH 502/HH 503 CALIBRATION PROCEDURE Note: The following calibration procedure should perform only by qualified technicians who have access to the items as following. Equipment: The class of calibrator had better 10 times greater than the measured meter. 1. Set the jumper position on J1 position. 2. The input selection change to T1 position, then input DCV 60mV after the display is stabilized and press “ ENTER “ key. 3.
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 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 should malfunction, it must be returned to the factory for evaluation.
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