8921 AZ
Sound Level Meter
Features
ISO 9001 Facility: Manufactured in an ISO 9001 certified environment.
CE EN 61326-1 & IEC 61000: Designed and tested to meet European EMC safety standards.
RoHS & REACH Compliant: We provide a Manufacturer’s Self Declaration, ensuring the product meets environmental safety standards for hazardous substances.
Professional 8921 AZ Sound Level Meter features:
* Accuracy meets EN61672-1:2013, Type 2 requirement
* Deluxe super large LCD display with affordable price
* Easy to calibrate by using AZ 8930 sound calibrator
* Unique background noise absorber
* Features with digital display and analog bar graph
* Auto/manual range, 6 measurement range in 10 steps
* Max Hold and Fast/Slow response mode
* A/C weighting is switchable
* Easy to calibrate by standard calibrator
* AC/DC analog output
* USB Interface
Application
Application of 8921 AZ Noise Tester:
The Professional 8921 AZ Sound Level Meter
provides automatic or manual range in six measurement ranges from 30 to 130 dB.
The unit meets ANSI S1.4 and IEC60651, type 2 class standards, and features 0.1
dB resolution.
A background noise absorber of 8921 AZ SLM
permits user to measure sound levels accurately even in the presence of high
background noise.
The 8921 AZ Sound Level Meter allows user to
select between fast and slow response times as well as A&C weighting. Jacks on
the meter provide both AZ and DC analog output.
The portable 8921 AZ Noise Level Meter can
be used for acoustic (sound that travels through air) measurements, which had
been widely used in the HVAC (Heating, Ventilation and Air Conditioning) and
industrial related application. User could capture sound level data via the USB
interface.
The Digital 8921 AZ Decibel Sound Test Meter
was being designed and manufactured by AZ Instrument, a well experienced
manufacturer for Environmental Measuring Instrument.
Specification
Specification of 8921 AZ Sound Level Meter:
| Model | 8921 |
| Measure Range | A weight: 30~130 dB C weight: 35~130 dB |
| Digital Display (6 ranges) | 30~80, 40~90, 50~100, 60~110, 70~120, 80~130 dB |
| Digital Display Resolution | 0.1 dB |
| Digital Updating Time | 160 ms |
| Quasi-analog Bar (6 ranges) | 30~80, 40~90, 50~100, 60~110, 70~120, 80~130 dB |
| Quasi-analog Resolution | 1 dB |
| Bar Updating Time | 40 ms |
| Accuracy at 94 dB, 1KHz | ±1.5 dB |
| Analog Output | AC 0.707 Vrms (at full scale): DC 10 mV/dB |
| Microphone | Dia 6mm electric condenser microphone |
| Frequency Range | 31.5 Hz~8 KHz |
| Battery Life Time | 30 hours typical |
| Windscreen | YES |
| LCD Size | 62(L) * 42(W) mm |
| Operating Temperature | 0~50℃ |
| Operating RH% | Humidity ＜80% |
| Storage Temperature | -20~50℃ |
| Storage RH% | Humidity ＜90% |
| Meter Size | 254(L) * 77(W) * 37(H) mm |
| Weight | ~200g |
| Battery | 9V Battery * 1 PC or 9V DC adaptor |
| Standard Package | Meter, Battery, Manual, Carry Case |
| Optional Accessory | Software CD & USB Cable |
FAQ
FAQ of AZ 8921 Sound Level Meter
Q1: When should I use A-weighting (dBA)?
A1: Use A-weighting for almost all general noise environmental measurements.
It is the standard for:
*OSHA workplace safety compliance.
*Environmental noise complaints (e.g., loud neighbors or traffic).
*General office or residential sound levels.
Q2: When should I use C-weighting (dBC)?
A2: Use C-weighting when you are dealing with loud, low-frequency noises.
It is ideal for:
*Measuring the "thump" of a subwoofer or heavy machinery.
*Checking peak sound pressure levels in industrial settings.
*Evaluating the effectiveness of earplugs or soundproofing materials.
Q3: What is the BA mode?
A3: The Background Noise Absorber filters ambient sound, allowing you to isolate and measure the specific noise of a single machine.
