407119 - Measuring equipment Extech - Free user manual and instructions
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| Product type | Sound Level Meter |
| Model | 407119 |
| Brand | Extech |
| Measurement range | 30 to 130 dB |
| Accuracy | ±1.5 dB |
| Frequency weighting | A and C |
| Time weighting | Fast and Slow |
| Display | LCD, 4-digit |
| Data hold | Yes |
| Max hold | Yes |
| Battery type | 9V battery (6F22) |
| Battery life | Approximately 200 hours |
| Dimensions | 7.0 x 2.9 x 1.4 inches (178 x 74 x 36 mm) |
| Weight | 10.6 oz (300 g) including battery |
| Operating temperature | 32 to 122°F (0 to 50°C) |
| Storage temperature | 14 to 140°F (-10 to 60°C) |
| Humidity range | Max 80% RH |
| Accessories included | Battery, wind screen, screwdriver, carrying case |
| Maintenance | Clean with a damp cloth; do not use solvents |
| Safety | Do not expose to moisture or direct sunlight |
| Spare parts / repair | Contact Extech support for replacement parts |
Frequently Asked Questions - 407119 Extech
How do I calibrate the Extech 407119 sound level meter?
Calibration requires an external sound calibrator (e.g., Extech 407744). Insert the meter's microphone into the calibrator, turn on the calibrator, and adjust the meter's calibration potentiometer with a small screwdriver until the display matches the calibrator's output level (usually 94 dB).
What is the measurement range of the 407119?
The Extech 407119 measures sound levels from 30 to 130 dB in three ranges: 30-80 dB, 50-100 dB, and 80-130 dB.
How do I change the battery?
Open the battery compartment on the back by sliding the cover. Replace the 9V battery (6F22) ensuring correct polarity. Close the cover securely.
What is the difference between A and C frequency weighting?
A-weighting (A) mimics the human ear's response, used for environmental noise. C-weighting (C) is flatter, used for peak or high-level noise measurements.
Can I use the 407119 to measure impulse noise?
No, the 407119 does not have impulse weighting. It only supports Fast and Slow time weightings. For impulse noise, use a meter with impulse capability.
What does the 'Max Hold' feature do?
Max Hold displays and holds the highest sound level measured since the feature was activated. Press the Max Hold button to enable; press again to clear.
How do I clean the microphone?
Gently brush away dust with a soft brush. If necessary, use a damp cloth with mild soap and water, but avoid getting moisture into the microphone element. Always dry completely before use.
What is the accuracy of the 407119?
The accuracy is ±1.5 dB under reference conditions (1 kHz, 94 dB). Actual accuracy may vary with frequency and level.
Does the 407119 have a backlight?
No, the Extech 407119 does not have a backlit display. It uses a standard LCD that requires ambient light.
Is the microphone replaceable?
The microphone is integrated and not user-replaceable. If damaged, contact Extech for service or consider replacement.
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USER MANUAL 407119 Extech
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Product information
Brand : Extech
Model : 407119
Category : Measuring equipment