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Mextech SLL4005 Sound Level Meter
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Mextech SLL4005 Sound Level Meter
Mextech SLL4005 Sound Level Meter
The personal noise dose meter is test equipment to evaluate the noise condition of the working environment by measuring the accumulated noise exposure. With this test data, the company can ensure the related noise regulation is followed or decide whether or not to apply certain noise reduction actions to avoid the acoustic trauma and noise-induced hearing loss occurring to the working personnel.
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SECURE PAYMENTS
1 YEAR WARRANTY
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₹ 30,585
(GST inclusive price) i-
Base Value: ₹ 25919.5
-
GST: (18) % ₹ 4665.5
-
Total Value ₹ 30585
₹43,750.00
( - 30% OFF )
Description
Key Features:
- The Noise Dose Meter measure the frequency weighted noise exposures and peak sound levels simultaneously
- Simple operation, including direct read–out of results.
- Eight built–in standard dose measurement setups: OSHA80, OSHA90, MSHA80, MSHA-90, DOD, ACGIH, ISO85 and ISO90.
- Nine users – defined measurement setups.
- A single sound level meter (SLM) setup.
- 50 dose (DATA) result stores
- Download of setups from PC to the meter.
- Keypad lock protects meter against accidental operation
- Timers support pre–selection of measurement duration.
- Use RS-232 data output to connect with PC.
- The meter is two overlapping measurement ranges: 60 – 130 & 70 – 140dB, A & C RMS weightings, Linear & C Peak weightings, Fast & Slow time weightings, and energy exchange rates (Q) of 3, 4, 5 & 6. In dose measurement mode, it displays % dose, % dose projected for an 8-hour period, peak level and measurement duration.
- For countries that are subject to European Union regulations or the equivalent ISO standards, the meter measures the daily sound exposure level (LAeq,8hr, Pa2h according to IEC 61252, which is identical with the L EX,8h required by ISO 1999), while for USA OSHA/MSHA regulations they measure the Time Weighted Average level (TWA).
- When used as a sound level meter it displays sound level, time–averaged (L Aeq) sound level, peak and sound exposure level (SEL).
- The meter is automatic run timing facilities controlled by the built–in clock and time–history recording capabilities. Sampling times can be specified between 1s and 1 hour, while storage is 120000 data points.
The meter is able to measure and save up to five specified Ln values (Statistical noise levels). Run duration, start and stop times preset, and other setting via the meter keys or software.
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Product Specifications
| BASIC FUNCTION | RANGE |
| Standards Applied | IEC 61252, ANSI S1.25–1992 (for dose meter and sound exposure meters), IEC 61672-1:2013 Class 2 |
| Microphone | 1/2-inch electret condenser microphone with 31-inch integral cable |
| Display | Liquid Crystal Display (LCD) |
| Measurement Ranges | Linearity: 60–130 dB (A and C) Indicator Range: 70–140 dB (A and C) |
| Peak Ranges | 60–130 dB: 93–133 dB Peak 70–140 dB: 103–143 dB Peak |
| Frequency Weightings | RMS Detector: A or C Peak Detector: C or Z (Linear) |
| Time Weightings | Fast and Slow (RMS Detector) |
| Exchange Rate | 3, 4, 5, or 6 dB |
| Stabilization Time | 10 seconds from power on |
| Threshold Levels | 70–90 dB in 1 dB steps (user-defined) |
| Criterion Levels | 80, 84, 85, or 90 dB (user-defined) |
| Overload Indication | At 0.1 dB above the top of selected measurement range |
| Under-Range Indication | Shown when levels fall below measurement range |
| High Level Detector | 115 dB |
| Keypad Lock | Lock: Up + Right arrows Unlock: Left + Down arrows |
| Clock | Real-time clock with calendar |
| Memory | Stores results from 50 measurements for later viewing and download |
| Measurement Duration | 5, 10, 15, or 30 minutes; 1, 2, 4, 8, 10, 12, or 24 hours |
| Timers | Up to 16 timers; can be set up to one month ahead for auto start/stop |
| Timer Control (Start/Stop) | Can be set via PC software or meter keypad |
| Logging Capability | All measurement parameter values can be logged |
| Logging Period (LP) | 1s, 2s, 5s, 10s, 15s, 20s, 30s, 1 min, 2 min, 5 min, 10 min, 15 min, 20 min, 30 min, or 60 min |
| Logging Capacity | Up to 120,000 values stored at one time |
| Setups | 8 built-in (predefined) setups + 9 user-defined setups |
| Output Interface | USB interface |
| Power Supply | 4 × 1.5V AAA (UM-4) batteries |
| Battery Indicator | 4-step symbol display; flashes when battery voltage is low |
| Operating Temperature & Humidity | 0–50°C (32–122°F), 10–90% RH |
| Storage Temperature & Humidity | -10–60°C (14–140°F), 10–75% RH |
| Size | 140 × 72 × 34 mm |
| Weight | Approx. 350 g (including batteries) |
| Standard Accessories | Main unit, external probe, screwdriver, carrying case, operation manual |
SETUP:
| Setup | OSHA80 | OSHA90 | MSHA80 | MSHA90 | DO D | ACGI H | ISO85 | ISO90 | User1- 9 | SL M |
| Measurement Range (dB) | ||||||||||
| Time Weighting | Slow | Slow | Slow | Slow | Slow | Slow | Fast | Fast | Fast | Slow |
| Frequency Weighting | A | A | A | A | A | A | A | A | A | A |
| Peak Frequency Weighting | Lin | Lin | Lin | Lin | Lin | Lin | C | C | C | Lin |
| Exchange Rate | 5 | 5 | 5 | 5 | 4 | 3 | 3 | 3 | 3 | 3 |
| Threshold (dB) | 80 | 90 | 80 | 90 | 80 | 80 | 70 | 70 | 80 | N/A |
| CriterionLevel(dB) | 90 | 90 | 90 | 90 | 85 | 85 | 85 | 90 | 90 | N/A |
| AllowUserto Change Setup | No | No | No | No | No | No | No | No | Yes | Yes |
PRINCIPLE:
- DOSE is a parameter used to quantify noise exposure measured in a period, during turns of % noise exposure relative to 90dBA for 8 hours.
- i.e. 100% DOSE = 90dBA for 8 hours
- This is known as the Criterion. Other criterion is available such as 100% DOSE = 85dBA for 8 hours to meet legislation in different countries.
- If the person stayed in this environment for 4 hours, he would receive 50%DOSE.
- Also, if the noise level was say 93dBA, 3dB higher, a 100% DOSE would be accumulated in only 4 hours, the above example is for a dose meter with 3dB Exchange Rate, where a 3dB increase in sound level corresponds to a doubling energy. A dose meter with 5dB Exchange Rate is also, available where the sound must increase by 5dB to double the dose as required to meet noise legislation in some countries.
MEASUREMENTS PARAMETERS:
| OSHA80 | OSHA90 | MSHA80 | MSHA90 | DOD | ACGIH | ISO–85 | ISO–90 | User1- 9 | SLM |
| DOSE% | DOSE% | DOSE% | DOSE% | DOSE% | DOSE% | DOSE% | DOSE% | DOSE% | SPL |
| PDOSE% | PDOSE% | PDOSE% | PDOSE% | PDOSE% | PDOSE% | PDOSE% | PDOSE% | PDOSE% | MAX |
| TWA | TWA | TWA | TWA | TWA | LEPd | LEPd | LEPd | TWA | LEQ |
| PTWA | PTWA | PTWA | PTWA | PTWA | LEQ | LEQ | LEQ | PTWA | LEQ |
| LAVG | LAVG | LAVG | LAVG | LAVG | SEL | SEL | SEL | LAVG | PKZ |
| LEQ | LEQ | LEQ | LEQ | LEQ | SE(Pa2 h) | SE(Pa2 h) | SE(Pa2 h) | LEPd | |
| SEL | SEL | SEL | SEL | SEL | MAX | MAX | MAX | LEQ | |
| MAX | MAX | MAX | MAX | MAX | PKZ | PKC | PKC | SEL | |
| PKZ | PKZ | PKZ | PKZ | PKZ | L10 | L10 | L10 | SE(Pa2 h) | |
| L10 | L10 | L10 | L10 | L10 | L50 | L50 | L50 | MAX | |
| L50 | L50 | L50 | L50 | L50 | L90 | L90 | L90 | PKZ | |
| L90 | L90 | L90 | L90 | L90 | L95 | L95 | L95 | L10 | |
| L95 | L95 | L95 | L95 | L95 | L99 | L99 | L99 | L50 | |
| L99 | L99 | L99 | L99 | L99 | SPL | SPL | SPL | L90 | |
| SPL | SPL | SPL | SPL | SPL | L95 | ||||
| 99 | |||||||||
| SPL |
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