HD-2020 | acoustic calibrator
Product.Nr.: HD-2020
Manufacturer: Senseca (ehemals DeltaOhm)
EUR 821,00
incl. 19 % VAT
product description
The sound level calibrator HD-2020 is a portable, battery operated sound source, suitable for the calibration of sound level meters (portable and laboratory) and acoustic stations. It allows the calibration of ½” microphones with mechanical dimensions. The calibration pressure levels of 94 dB and 114 dB can be selected via the keypad. If the microphone is absent or not inserted correctly into the calibrator cavity, the sound level will blink on the display. The clock/calendar allows you to set the number of years and months of validity of the calibration from the date of adjusting: at the expiration time, an appropriate symbol flashes on the display.
- The 1,000 Hz frequency allows calibration of sound level meters with any weighting
- Independent of atmospheric pressure
- The 114 dB sound level allows performing calibrations even in environments with high background noise
- Simple to use
Specifications:
| Coupling cavity: | for standard microphones of 1/2“ (12.7 ± 0.03 mm) according to IEC 61094-1 and IEC 61094-4 |
|
| Frequency: | 1,000 Hz | |
| Frequency tolerance: | 1 % in the range - 10°C to + 50°C and 10 % r.h. to 90 % r.h. | |
| Sound pressure level: | 94.0 dB and 114.0 dB ±0.2 dB at 1 kHz (referred to 101.3 kPa, 23°C ±3°C and 65 % r.h.) |
|
| Reference conditions: | 20°C, 50 % r.h., 101.3 kPa, 10 mm³ capsule volume | |
| Response time: | 10 s | |
| Distortion factor: | <1 % | |
| Influence of temperature and humidity: | <0.3 dB within the range -10°C to +50°C and 10 % r.h. to 90 % r.h. | |
| Influence of static pressure: | <0,1 dB within the range -65 kPa to 108 kPa | |
| Working temperature: | -10°C to +50°C | |
| Relative working humidity: | ≤90 % r.h. | |
| Storage temperature: | -25°C to +70°C | |
| Volume equivalent to microphone: | 5 mm³ to 250 mm³ | |
| Power supply: | 9 V alkaline batteries IEC type 6LR61, 9 V rechargeable batteries are also permitted |
|
| Battery life: | 48 h permanent operation with high-qualified alkaline batteries | |
| Display: | 3½ LCD display, battery symbol | |
| Ingress protection: | IP64 | |
Downloads
data sheet German (0.46 MB)
data sheet English (0.23 MB)
