Overview
The Enviro Testers Sound Calibrator is a compact, lightweight, and highly reliable device designed for accurate calibration of sound measuring instruments. With dual calibration frequencies at 125Hz and 250Hz, it ensures precise sound pressure level verification. Its ±0.5 dB accuracy, durable ABS body, and LED battery indicators make it easy to use in both labs and field conditions. Ideal for professionals seeking stable performance and long battery life in a portable calibrator.
Features
- Dual calibration frequencies: 125 Hz & 250 Hz (±2%) for versatile instrument checks
- Reference level output: 94 dB re 20 µPa under standard conditions
- High accuracy: ±0.5 dB sound pressure level at reference environment
- Low distortion: THD < 4% ensures stable, clean calibration tone
- Clear status LEDs: Green (normal) / Red (low battery) indicators
- Long battery life: ≈40 hours on a single 9V (006P) battery
- ½-inch mic adapter: Compatible with standard 1/2″ microphones
- Rugged, lightweight build: ABS housing, only ~170 g
- Compact size: 113 × 63 × 44 mm—easy to carry in the field
- Wide operating window: 0–40°C (32–104°F); storage -10–60°C (14–140°F)
- Stable reference conditions: 23°C (73°F), 101.325 kPa, 50% RH
- Included accessories: 9V battery, carrying case, manual, ½” mic adapter
Technical Specifications
| Output Sound Pressure Levels | 94 dB re 20µPa under reference conditions |
| Output Frequency | 125 Hz ±2% and 250 Hz ±2% |
| Total Harmonic Distortion | < 4% |
| Reference Conditions | 23°C (73°F), Static pressure 101.325 kPa, Relative humidity 50% |
| Accuracy of Sound Pressure Level | ±0.5 dB under stated reference environment conditions |
| Calibration Frequencies | 125 Hz and 250 Hz |
| Battery Type | One 9V battery (006P) |
| Battery Test | Green LED: Normal operation, Red LED: Low battery |
| Battery Life | Approx. 40 hours |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Storage Temperature | -10°C to 60°C (14°F to 140°F) |
| Dimensions | 113 mm (L) × 63 mm (W) × 44 mm (H) |
| Weight | Approx. 170 g |
| Accessories | 9V battery, carrying case, instruction manual, ½ inch microphone adapter |
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