OMEGA HH505 Digital Thermometer
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INTRODUCTION This instrument is a 4½ digit, compact-sized portable digital thermometer designed to use external 100W Platinum RTD as temperature sensor. Temperature indication follows Reference Temperature/Resistance Tables (Pt385 for European Curve, Alpha=.00385 and Pt3926 for American Curve, Alpha=.003926). 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: Pt385(100W ) -200°C to 800°C, (-328°F to 1472°F) Pt3926(100W ) -200°C to 630°C, (-328°F to 1166°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 RTD probe error. ±(0.05% rdg + 0.2°C) on °C scale ±(0.05% rdg + 0.4°F) on °F scale Temperature Coefficient: 0.
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 (Main display) Reading the main 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.
5 Pt385/Pt3926 T1 Input RTD Probe Select The Pt385/Pt3926 key switch the T1 input selects the Pt385 or Pt3926 RTD probe as input. When the thermometer is turned on, it is set to the probe selected that was in use when the thermometer was last turned off. 6 MIN MAX with Time record Mode Press MIN MAX key to enter the MIN MAX Recording mode, (displays the Maximum reading with time, Minimum reading with time and Average reading stored in record mode).
7 REL Relative mode Pressing REL key to enter the Relative mode, zero the display, and store the displayed Reading as a reference value and annunciator REL is displayed. Present temperature reading displayed on second display. Press REL key again to exit the relative mode. The relative value can also be entered by the user. (See "SET mode" later in this manual.
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. = = = =.= is displayed in main display. Relative value is entered via overlay numbers, then press overlay ENTER key, stored the relative value, enter Time set mode. 2. Time set mode, (Press ENTER key can escape Time set mode) =.= = = : = = is displayed in second and third display.
Hi Limit value Recall display mode Press Hi RECALL key to display the Hi set Limit value on second display. Press Hi RECALL key again to exit this mode. 11 Lo Limit value Recall display mode Press Lo RECALL key to display the Hi set Limit value on second display. Press Lo RECALL key again to exit this mode. 12 Hi/Lo Limits mode (only Main display) Press Hi/Lo Limits key to enter the Hi/Lo Limits comparative mode, when input temperature value exceed Hi or Lo Limits value.
OPERATOR MAINTENANCE WARNING To avoid possible electrical shock, disconnect the thermocouple connectors from the rmometer 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.
TEMPERATURE VS RESISTANCE TABLE(ITS90) °C Pt385 Pt3926 -200°C 18.521W 16.996W -100°C 60.256W 59.479W 0°C 100.000W 100.000W 100°C 138.505W 139.272W 200°C 175.856W 177.362W 300°C 212.052W 214.275W 400°C 247.092W 250.018W 500°C 280.977W 284.591W 600°C 313.708W 317.994W 700°C 345.280W - 800°C 375.
HH 504 / HH 505 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. Turn off the meter then set the adjusted jumper to J1. 2. Insert the 383.00Ω calibrator to the T1 then turn on the meter, the main display reading reads 1830.0 then press " ENTER " key. 3. The second display is stabilized (about 5sec.
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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