Omega-vehicle-security 450 User Manual

www.omega.com e-mail: [email protected]’s Guide450 SERIESDigital ThermometersShop online atMADE INTEMPERATURE INDICATORHOLDON°F1°0.1°OFFON°C305.4°FT

7Section 2 Operation 2.1 Principles of OperationThe temperature indicator uses two ICs to digitizeand display the analog input signal.One IC perform

82.2 PowerWhen battery voltage reaches about 6 volts, thedisplay will exhibit a flashing: “LOW BAT” indication.A minimum of 20 hours of operation time

9the recesses or each corner of the case bottom.Step 2: Carefully pull the case halves straightapart so as not to damage the internal connectors.Step

102.3 OperationStep 1: Insert temperature sensor plug into theindicator input jack. Failure to insert a probe resultsin a overload condition of three

11Step 5: Observe and or record the temperaturevalue.Step 6: Turn instrument off by pressing the OFFkey.

12450 SERIESOFFHOLDONF.ONC.10.1FCF/CIndicationDisplayValueProbeInput JackLowBatteryVoltageIndicationTo HoldDisplayPress andhold key toretain lastreadi

132.4 MaintenanceNormal maintenance of the indicator consists ofoccasional cleaning with a soft, damp cloth,replacement of the battery as required, an

14 Section 3 Calibration3.1 CalibrationUnits with serial numbers beginning with theletter N use the calibration procedure outlinedbelow. Older units

15with a minimum accuracy of ±0.1 degreeFahrenheit or ±0.2 degree Centigrade.Step 1. Ensure the unit is turned off. Connect theoutput of the thermoco

16NOTE: If you want to cancel the calibrationmode press OFF button in front of the unit.For T/C type K set simulator @ 1320 °CJ set simulator @ 960 °C

Servicing North America:USA: One Omega Drive, Box 4047ISO 9001Stamford CT 06907-0047Certified Tel: (203) 359-1660 FAX: (203) 359-7700e-mail: info@omeg

17calibration procedure, set simulator at .2°C insteadof 0 °C. Repeat the calibration procedure again.Step 6. Verify calibration once finished.

1810251638947GNDRef J+IN-1.23V+3.7VRaRcRbRa - Full Scale Adj.Rb Zero Adj.Rc +Full Scale Adj.

19Calibration- Thermocouple Type K, J andTand EEquipment List• 4 ½ digit voltmeter• Voltage Calibrator:Resolution, 1uV; accuracy ±0.01% (±2uV)• Ice Ba

20c. Remove the bottom case of the indicator.d. Adjust the voltage calibrator for an output of0.000mV and connect the minus lead from thecalibrator to

21polrity).j. The voltage measured at the “3.7V” test-point should be 3.007 times larger thanthe voltage measured at the “-1.23V” test-point. Adjust

22Calibration- Thermistor TypeEquipment List• 4 ½ digit voltmeter• Precision decade box:Resolution, 0.01 ohm ; accuracy ±0.02%• Ice Bath, 0.00 °C ± 0.

23at the “-1.23V” testpoint: disregardingpolarity indication, record the voltage.f. Move the DVM HI lead to the “3.7V”testpoint and record the voltage

24Calibration- Platinum RTDEquipment List• 4 ½ digit voltmeter• Precision decade box:• Resolution, 0.01 ohm ; accuracy ±0.02%• Ice Bath, 0.00 °C ± 0.0

25e. Move the DVM HI lead to the “3.7V”testpoint and record the voltage (disregardpolrity).f. The voltage measured at the “3.7V” test-point should be

26Zero Calibrationa. Turn the indicator on by pressing the °Ckey.b. Set the indicator to the 0.1° range.c. Connect the ice bath probe to the indicator

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WARRANTY/DISCLAIMEROMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date o

TEMPERATUREThermocouple, RTD & ThermistorProbes, Connectors, Panels &AssembliesWire: Thermocouple, RTD &ThermistorCalibrators &

Table of ContentsSection 1: Description1.1 General Description……………21.2 Physical Description…………...31.3 Unpacking……………………… 31.4 Specification

2Section 1 Description1.1 General DescriptionYour hand-held, battery operated digitaltemperature indicator is configured for compatibilitywith one of

31.2 Physical DescriptionThe indicator measures 45 mm (1.8 inches) inHeight, 85 mm (3.3 inches) in width, and 145 mm(5.7 inches) in length. Weight is

4SpecificationsDisplay:Liquid crystal display, 7.6 mm (0.3 in.) digitHeightOperating temperature:0 to 50°C (32 to 122°F) 0 to 75% RelativeHumidityStor

5Maximum Common Mode Voltage:1000VAC(RMS), ±2000V PeakAccuracy at 22°C (72°F)1° range: ±0.8°C±0.1% rdg±1.5°F±0.1% rdg0.1° range: ±0.25°C±0.1% rdg±.45°

6450 Range TableTypeKTypeJTypeEType T10.110.110.1-189 C to +1372 C-308 F to +2501 F-139.8 C to +203.7 C-219.7 F to +398.7 F-194 C to +1200 C-31