Delta OHM HD 2020 Page 6 Manual Download | Manualshive

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6

Use the arrow keys to increase/decrease the value. Press the SETUP key to confirm and go to the current
month:

>>

Use the arrow keys to increase/decrease the value. Press the SETUP key to confirm and go to the current
day:

>>

Use the arrow keys to increase/decrease the value. Press the SETUP key to confirm and go to the current
time:

>>

Use the arrow keys to increase/decrease the value. Press the SETUP key to confirm and go to the current
minute:

>>

Use the arrow keys to increase/decrease the value. Press the SETUP key to confirm and go to the current
second:

>>

Whenever you press the arrow keys, seconds will be reduced to zero. Press the SETUP key to confirm and
go to calibration section of the menu: the first triangle on the left turns on and the calibration year appear
(this parameter cannot be modified by the user).

(calibration year

– first triangle)

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Summary of Contents for HD 2020

Page 1: ...on written in this manual and the instrument that you have purchased We cannot entirely exclude errors in the manual for which we apologize Data figures and descriptions contained in this manual cannot be legally asserted We reserve the right to make changes and corrections without prior notice REV 1 1 15th June 2012 HD 2020 ENGLISH ...

Page 2: ...he standard screen 3 Display When you turn the instrument on it shows all segments on then the sound pressure level 94 or 114dB will appear in standard view 4 Calibrator cavity for 1 2 inch microphones 5 key in standard mode it selects 94dB and 114dB pressure levels alternately In menu mode it de creases the current value 6 key in standard mode it selects 94dB and 114dB pressure levels alternately...

Page 3: ...st Le misure effettuate presso un Laboratorio di Taratura Accredia sono garantite da una catena di riferibilità ininterrotta che ha origine dalla taratura dei campioni di prima linea del Laboratorio presso l istituto metrologico nazionale Measurements performed in an Accredia Calibration Laboratory are guaranteed by a uninter rupted reference chain which source is the calibration of the Laboratory...

Page 4: ... is inserted the instrument switches off 5 minutes after turning on provided that you don t press any key The calibrator display shows calibration pressure level battery life current date and time The internal clock allows to set up the validity period of calibration expressed in years and months starting from the date of adjustment as soon as the time interval has elapsed a blinking symbol alerts...

Page 5: ... after about 5 minutes if the microphone is inserted in the cavity and you don t press any key If the cavity is open the sound level blinks on the display in this case the instrument switches off automati cally after 30 seconds You cannot disable the AutoPowerOff function SETUP Key The SETUP key allows entering and viewing the menu To exit press the SETUP key until you go back to the standard scre...

Page 6: ...rent time Use the arrow keys to increase decrease the value Press the SETUP key to confirm and go to the current minute Use the arrow keys to increase decrease the value Press the SETUP key to confirm and go to the current second Whenever you press the arrow keys seconds will be reduced to zero Press the SETUP key to confirm and go to calibration section of the menu the first triangle on the left ...

Page 7: ...s entered by the calibration laboratory and the expiry date When the time interval expires the triangle blinks to remind you that the calibrator needs a new ad justment years of validity second triangle Use the arrow keys to increase decrease the value Confirm with SETUP key and go on to the number of va lidity months months of validity second triangle Use the arrow keys to increase decrease the v...

Page 8: ... and the calibrator off switch on the sound level meter and detect the unweighted ambient sound pressure level If the measured level is below 78 dB you can use both calibration sound levels 94 dB and 114 dB if the level is between 78 dB and 98 dB you can use the 114 dB level only while a sound level above 98 dB means that calibration is not possible Press the ON OFF key to switch on the instrument...

Page 9: ...ibrator nominal one Microphones optimized for diffuse field measurements don t require corrections when calibrated in a closed cavity at 1 kHz instead LOW BATTERY INDICATION AND REPLACEMENT The HD 2020 calibrator is provided with two batteries a 9V alkaline battery that can be replaced by the user and a lithium buffer battery The latter allows the date indicator and watch to work even without exte...

Page 10: ...the battery compartment The display and the keypad take up the higher part The electro acoustic transduction device is on the left and it consists of a wide cavity with a piezoceramic generator and a feedback sensor The device emits the signal through the microphone An outer capillary hole balances the chamber static pressure protecting microphones from overpressure due to their insertion Control ...

Page 11: ...erated by the piezoelectric transducer through automatic gain control The signal provided by the sensor slightly varies with the ambient temperature and the static pressure the frequency of the signal provided by the oscillator is also stable in relation to ambient parameters INSTRUMENT STORAGE Instrument storage conditions Temperature 25 55 C Humidity below 90 RH without condensation When storing...

Page 12: ...al functioning and operating safety are guaranteed only if climatic conditions are the same as described in the specifications chapter Use and store the instrument avoiding Sudden change of the ambient temperature that may cause condensation Inflammable or corrosive gases Direct vibration or blows Intense electromagnetic fields static electricity If you carry the instrument from a cold to a hot en...

Page 13: ... 10 C 50 C and 10 90 RH Static pressure influence 0 1 dB in the range 65 kPa 108 kPa Stability levels Short term stability 0 03 dB Stability after 1 year normal use 0 1 dB Operating conditions Working temperature 10 50 C Relative humidity 90 R H Storage temperature 25 70 C Microphone equivalent volume 5 to 250 mm 3 Power supply 9V alkaline battery IEC type 6LR61 9V rechargeable batteries are also ...

Page 14: ... 14 ORDERING CODE HD2020 The kit includes HD2020 calibrator one 9V alkaline battery instruction manual and I SO 9001 calibration report ...

Page 15: ...N 4 DISPLAY AND KEYPAD DESCRIPTION 5 CALIBRATION PROCEDURE 8 LOW BATTERY INDICATION AND REPLACEMENT 9 CONSTRUCTION AND FUNCTIONING 10 INSTRUMENT STORAGE 11 FUNCTIONING AND OPERATING SAFETY 12 SPECIFICATIONS 13 ORDERING CODE 14 ...

Page 16: ...he European users of electric and electronic devices are allowed to give back to the Distributor or Manufacturer the used device at the time of purchasing a new one The illegal disposing of electric and electronic devices is punished by a pecuniary administrative penalty This guarantee must be sent together with the instrument to our service centre N B Guarantee is valid only if coupon has been co...

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