ATP E-Catalogue 2025 - Catalog - Page 37
MET-933 Auto Ranging Sound Level Meter
dB
A/C
Freq
Fast
Slow
Data
Hold
Min
Hold
Max
Hold
Back
Light
Auto
Off
Low
Battery
1
CAL
Battery
The MET-933 is a lightweight and user-friendly sound level indicator offering 4
measurement ranges (3 manually selectable, 1 auto range). It offers selectable 8A9 or 8C9
frequency weightings and a choice of either Fast or Slow time weightings. It is designed
to match the accuracies required of IEC 61672:2013 at ±1.4 dB.
Sound
Frequency range of 31.5 Hz to 8 kHz.
130 dB
1 dB resolution.
LCD display backlight.
Max hold – displays the highest measured value.
x 0.1 dB
Min hold – displays the lowest measured value.
Data hold.
Low battery indicator.
Auto power off after 15 minutes of inactivity.
30 dB
Supplied with: Soft carry case, wind muffler and battery.
Accessories: Spare wind muffler (SL-WM1 + £3.50).
View Product
MET-958 Data Logging Sound Level Meter
dB
A/C
Freq
Fast
Slow
Data
Hold
Data
Logging
Min
Hold
Max
Hold
Back
Light
USB
Auto
Off
Low
Battery
ACDC
Battery
2
CAL
The MET-958 is a data-logging sound meter with 4 measurement ranges (3 manual, 1 auto). It offers selectable
8A9 or 8C9 frequency weightings and a choice of either 8fast9 or 8slow9 time weightings. The data logging feature can
record up to 262,100 readings at intervals of 1 second to 10 hours. The ±1.4 dB accuracy is designed to match
the requirements of IEC 61672:2013. Featuring an ergonomically designed grip, simple function buttons and a
USB connection it is easy to use.
Sound
LCD display backlight.
Data hold.
Max hold – displays highest measured value.
Min hold – displays lowest measured value.
Low battery indicator.
Auto power off after 15 minutes of inactivity
(unless in record mode).
Battery or mains powers (remove battery).
¼ inch camera bush for tripod mounting.
Supplied with: Hard carry case, wind muffler,
3.5 mm earphone plug, 1 metre USB cable, software,
AC/DC mains power adaptor and battery.
Accessories: Wind muffler (SL-WM2 + £3.50).
Sound
Technical Specifications
1
Measurement
Ranges
MET-933
30 to 80 dB
50 to 100 dB
80 to 130 dB
30 to 130 dB (Auto)
Measurement
Parameters
130 dB
2
MET-958
x 0.1 dB
30 to 80 dB
50 to 100 dB
80 to 130 dB
30 to 130 dB (Auto)
Lp, Lmax, Lmin
Resolution
0.1 dB, 1 dB (Bar graph)
0.1 dB
Accuracy
±1.4 dB (94 dB @ 1 kHz)
±1.4dB (94 dB @ 1 kHz)
Frequency Range
31.5 kHz - 8 kHz
31.5 kHz - 8 kHz
Frequency
Weightings
'A' or 'C'
'A' or 'C'
Time Weightings
Fast or slow
Fast or slow
Dimensions
158 x 62 x 33 mm
252 x 66 x 33 mm
Screen Size
35 mm
55 mm
Weight
178 g
262 g
Power
1 x 9V PP3 alkaline battery
(LR-61)
1 x 9V PP3 alkaline battery
(LR-61)
£55.00
£179.00
Price
sales@atp-instruments.co.uk
30 dB
View Product
Calibration Options
01530 566800
CAL
Certificate
CAL-SL
Issued at
94db & 104db at A & C, Fast & Slow, High & Low
Range
Price
£86.00
www.atp-instrumentation.co.uk
37
