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Summary of Contents for Delta OHM HD2024
- Page 1 English Operating manual Acoustic calibrator HD2024 Companies / Brands of GHM www.deltaohm.com Keep for future reference.
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Page 2: Table Of Contents
AUTIONS ON USING THE BATTERY CONSTRUCTION AND FUNCTIONING ..............7 TECHNICAL SPECIFICATIONS ................8 INSTRUMENT STORAGE ..................9 SAFETY INSTRUCTIONS ..................9 ORDERING CODES ....................10 HD2024 V1.0... -
Page 3: Introduction
INTRODUCTION The HD2024 sound level calibrator is a portable, battery operated sound source, suitable for sound level meters (portable and laboratory) and acoustic stations. It allows calibrating 1/2” (1/4” with HD2020MA adapter) microphones with mechanical dimensions compliant with IEC 61094-1 (“Measurement microphones. Part 1: Specifications for laboratory standard microphones”) and IEC 61094-4 (“Measurement... -
Page 4: Description
2 DESCRIPTION ON-OFF key: turns on and off the instrument. LED indicating the calibrator status. Calibrator cavity for 1/2” microphones. LOW BATT LED: indicates that the battery is low and needs to be replaced. Battery lid. HD2024 V1.0... -
Page 5: Calibration Procedure
• Once calibration is complete, switch off the sound level meter and the calibrator and remove the microphone from the cavity. The HD2024 calibrator allows calibrating any sound level meter provided that it is equipped with a laboratory or working standard 1/2” microphone compliant with IEC 61094-1 and IEC 61094-4 standards. -
Page 6: Battery
• Remove the battery if the instrument is not to be used for an extended period. • If the battery is low, replace it as soon as possible. • Make sure that there is no liquid leakage from the battery. • Use good quality sealed batteries (alkaline if possible). HD2024 V1.0... -
Page 7: Construction And Functioning
5 CONSTRUCTION AND FUNCTIONING Calibrator mechanical construction (section) The figure schematizes the HD2024 calibrator structure (in section). The battery com- partment is on the right side of the case. The printed circuits with the electronics are over and under the battery compartment. The electro-acoustic transduction system is on the left and it consists of a wide cavity with a piezoceramic generator and a feed- back sensor. -
Page 8: Technical Specifications
TECHNICAL SPECIFICATIONS The HD2024 calibrator complies with IEC 60942-2003 Class 1 and ANSI S1.40- 1984. Coupling cavity For standard ½” (12.7 ± 0.03 mm) microphones according to IEC 61094-1 and IEC 61094-4 Optional adapter HD2020MA for ¼” microphones Frequency 1000 Hz Frequency tolerance 1% in the range -10 ÷... -
Page 9: Instrument Storage
User obligations The instrument operator shall follow the directives and regulations below that refer to the treatment of dangerous materials: • EEC directives on workplace safety. • National law regulations on workplace safety. • Accident prevention regulations. HD2024 V1.0... -
Page 10: Ordering Codes
HD2020MA Microphone adapter for 1/4” capsules. DELTA OHM metrology laboratories LAT N° 124 are ISO/IEC 17025 accredited by ACCREDIA for Temperature, Humidity, Pressure, Photometry / Radiometry, Acous- tics and Air Velocity. They can supply calibration certificates for the accredited quantities. - Page 12 All DELTA OHM instruments are subject to accurate testing, and are guaranteed for 24 months from the date of purchase. DELTA OHM will repair or replace free of charge the parts that, within the warranty period, shall be deemed non efficient according to its own judgement. Complete replacement is excluded and no damage claims are accepted.
- Page 13 GHM GROUP – Delta OHM | Delta Ohm S.r.l. a socio unico Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | info@deltaohm.com The quality level of our instruments is the result of the constant development of the product. This may produce some differences between the information written in this manual and the instrument you have purchased.
- Page 14 GHM GROUP – Delta OHM | Delta Ohm S.r.l. a socio unico Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | info@deltaohm.com V1.0 04/06/2018...
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