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11

Frequency Measurements

1. Set the Function/Range switch to the Hz position.
2. Connect the red test lead to the "V

W

" jack and the black test lead to the

"COM" jack.

3. Connect the test leads to the point of measurement and read the frequency

from the display.

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Содержание HHM31

Страница 1: ...OMEGA HHM31 Digital Multimeter ...

Страница 2: ...ll Free in Germany 0800 82 66342 e mail nl omega com e mail germany omega com Czech Republic United Kingdom ISO 9002 Certified ul Rude armady 1868 733 01 Karvina One Omega Drive Hranice Czech Repubic Riverbend Technology Centre Northbank Irlam Tel 420 69 6311627 FAX 420 69 6311114 Manchester M44 5EX England e mail czech omega com Tel 44 161 777 6611 FAX 44 161 777 6622 France 9 rue Denis Papin 781...

Страница 3: ...ross a high voltage high energy power source when the meter is set up for mA measurement may be very hazardous 3 Turn off power to the circuit under test before cutting unsoldering or breaking the circuit Small amounts of current can be dangerous 4 Use caution when working above 60V dc or 30V ac rms Such voltages pose a shock hazard 5 When Using the probes keep your fingers behind the finger guard...

Страница 4: ...rating Environment 0 C to 40 C at 70 relative humidity Storage Temperature 20 C to 60 C 0 to 80 R H with battery removed from meter Accuracy Stated accuracy at 23 C 5 C 75 relative humidity Safety According to EN61010 1 protection class II overvoltage category CAT II 600V pollution degree 2 Power single standard 9 volt battery NEDA 1604 JIS 006P IEC 6F22 Battery life 200 hours typical Dimensions 1...

Страница 5: ... 4dgts on 600V range Input impedance 10MW Overload protection 500VDC or AC rms on 200mV range 600VDC or AC rms on all other ranges DC CURRENT Ranges 200µA 20mA 200mA 10A Accuracy 0 5 rdg 1dgt on µA mA ranges 3 0 rdg 1dgt on 10A range Input protection 0 5A 250V fast blow ceramic fuse 10A 600V fast blow ceramic fuse AC CURRENT 50Hz 500Hz Ranges 200µA 20mA 200mA 10A Accuracy 1 2 rdg 4dgts on µA mA ra...

Страница 6: ...ts 0 3Vdc 3 0Vdc on 200W range Overload protection 500VDC or AC rms CONTINUITY Audible indication less than 100W Overload protection 500VDC or AC rms DIODE TEST Test current 1 0mA 0 6mA Accuracy 3 0 rdg 3dgt Open circuit volts 3 0Vdc typical Overload protection 500VDC or AC rms CAPACITANCE Ranges 2nF 20nF 200nF 2µF 20µF Accuracy 2 0 rdg 10dgts Test frequency 2 5Hz ...

Страница 7: ...s 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 3 rdg 1 C 50 C to 1000 C 0 5 rdg 1 C 1000 C to 1300 C 0 3 rdg 2 F 58 F to 2000 F Temperature Coefficient 0 1 times the applicable accuracy specification per C from 0 C to 18 C and 28 C to 50 C 32 F to 64 F and 82 F to 122 F Input Protection 24V dc or 24V ac rms maximum i...

Страница 8: ...g In the MAX mode the MAX annunciator is displayed and maximun reading are stored in display register If the new reading is higher than the reading being displayed the higher reading is transferred to the display register A higher reading is defined as the reading with the higher absolute value The MAX hold function is disable in the frequency count mode but the MAX annunciator is still displayed ...

Страница 9: ...ither degrees Celsius C or degrees Fahrenheit F To change the temperature scale press the C F key 3 Selecting the Display Resolution The meter allows two choices of resolution High resolution 0 1 C or 0 1 F Low resolution 1 0 C or 1 0 F To select the alternate display resolution press the corresponding 0 1 1 key 4 Connect a type k thermocouple to the jack on the instrument Place the probe or therm...

Страница 10: ...ent Measurements 1 Set the Function Range switch to the desired current range and press the AC DC switch toggle between to the desired current type 2 For current measurements less than 200mA connect the red test lead to the µAmA jack and the black test lead to the COM jack 3 For current measurements over 200mA or greater connect the red test lead to the 10A jack and the black test lead to the COM ...

Страница 11: ...e VW jack and the black test lead to the COM jack 4 Touch the probes to the test points In ohms the value indicated in the display is the measured value of resistance In continuity test the beeper sounds continuously if the resistance is less than 100W WARNING The accuracy of the functions might be slightly affected when exposed to a radiated electromagnetic field environment eg radio telephone or...

Страница 12: ...s displayed 6 If the diode is open OL is displayed in both directions 7 If the junction is measured in a circuit and a low reading is obtained with both lead connections the junction may be shunted by a resistance of less than 1kW In this case the diode must be disconnected from the circuit for accurate testing Capacitance Measurements 1 Set the Function Range switch to the desired capacitance ran...

Страница 13: ... 1 Set the Function Range switch to the Hz position 2 Connect the red test lead to the VW jack and the black test lead to the COM jack 3 Connect the test leads to the point of measurement and read the frequency from the display ...

Страница 14: ...for a blown overload protec tion fuse There are two fuses F1 for the mA jack and F2 for the 10A jack For access to fuses remove the four screws from the back of the meter and lift off the battery cover and case Replace F1 only with the original type 0 5A 250V fast acting ceramic fuse Replace F2 only with the original type 10A 600V fast acting ceramic fuse Cleaning Periodically wipe the case with a...

Страница 15: ...perature Calibration Insert the K type thermocouple to the female connector and the other side of this probe to Temperature Calibrator We must allow the K type to stabilize for at least 1 minute and make sure and polarity is right position 1 Set the range to the T1 0 1 C and then apply 0 C to T1 input T2 input open adjust R845 and R846 fine adj until LCD reading reads 0 0 0 1 C 2 Set the range to ...

Страница 16: ...ity or otherwise shall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable for consequential incidental or special damages CONDITIONS Equipment sold by OMEGA is not intended to be used nor shall it be used 1 as a Basic Component under 10 CFR 21 NRC used in or with any nuclear installation or activity or 2 in medical applications or used on...

Страница 17: ...el Systems þ Totalizers Batch Controllers pH CONDUCTIVITY þ pH Electrodes Testers Accessories þ Benchtop Laboratory Meters þ Controllers Calibrators Simulators Pumps þ Industrial pH Conductivity Equipment DATA ACQUISITION þ Data Acquisition Engineering Software þ Communications Based Acquisition Systems þ Plug in Cards for Apple IBM Compatibles þ Datalogging Systems þ Recorders Printers Plotters H...

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