HY603 23.77mm Noise Meter Calibrator with 280ml Volume and 48mm Diameter for Professional Sound Level Instruments
The HY603 noise level meter calibrator features dual sound levels and multi-frequency sound signals for precise calibration of noise measuring instruments. This professional tool is designed for microphones and sound level meters with nominal diameters of 23.77 mm, 12.7 mm, and 6.35 mm, with included adapters for 13.2 mm and 7 mm conversions.
Beyond basic sensitivity calibration, this instrument performs comprehensive checks including linearity verification of instrument levels and accuracy assessment of level range controllers. The microcontroller-driven design employs digital synthesis technology to generate precise, stable sine signals with exceptional temperature and static pressure stability.
| Equivalent Volume | 280 ml |
| Coupling Cavity Diameter | 23.77 mm (with 13.2 mm and 7 mm adapters) |
| Power Supply | 2 LR6 batteries or 1 6F22 (9V) battery |
| Weight | 250 g (including batteries) |
| Dimensions | 48 mm diameter × 149 mm length |
| Operating Temperature | Class 1: -10°C to 50°C; Class 2: 0°C to 40°C |
| Standards Compliance | GB/T 15173-2010 and IEC 60942:2017 |
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