Model: GM1351
Digital Sound Level Meter
Operation Manual
A. Introduction
This equipment has been designed to meet the
measurement requirement of Safety Engineers,
Health, Industrial Safety offices and Sound Quality
control in various environment which include factory,
office, traffic, family and audio system
This equipment has the following functions:
1 .It is designed according to the IEC651 TYPE2 &
ANSI S1.4 TYPE2
2. Modern, compact, portable design
3. Accuracy up to ±1.5 dB
4. Measurement range: 30dBA – 130 dBA
5. MAX Hold
6. Auto backlight display
7. Auto power OFF
B. Safety Notice:
Please use a Standard Acoustic Calibrator.
1 Turn on the calibrator and set up the status to
94dB@1KHz
2 Insert the microphone carefully into the ½ inch
hole of the Calibrator.
D. Name and functions (Figure 2)
(Page 1)
(Page 2)
(Page 3)
Operation Environment:
C. Calibration Procedures:
3 .Turn on the Calibrator and adjust the potentiometer
inside the battery compartment of the unit
(shown in the Figure1), until the LCD display the
desire level (94 dB)
**
Our products are all well calibrated before shipment.
(Recommended recalibration cycle:1 Year.)
Maintenance:
Use dry cloth to clean the unit but never with any
solvent.
1. Electric Condenser Microphone.
2. LCD Display.
3. ON/OFF button
4. Maximum value hold button.(MAX)
5. Light sensor
6. Tripod mounting nut
7. Potentiometer
8. Windscreen
1. Below 2,000 meters height
2. Humidity <80% RH
3. Operation temperature: 0-40
C
.
Figure
1
Figure 2
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