9
SKF TMSP 1
3.3 Calibration
Using a standard Acoustic Calibrator (94dB, 1KHz Sine wave)
M
IN
M
A
X
C
A
F
A
S
T
S
L
O
W
IE
C
651
T
Y
P
E
II
5
0
M
e
d
=
1
0
0
d
B
H
i
=
8
0
1
3
0
d
B
L
E
V
EL
L
o
=
3
0
8
0
d
B
CAL
IE
C
6
0
9
4
2
C
la
s
s
2
A
N
SI
S1
.4
0
-
1
9
8
4
O
FF
9
4
dB
1
1
4
dB
• Make the following switch settings:
-
Display
: dBA.
-
Time weighting
: FAST.
-
Measurement mode
: MAX/MIN Mode function disable.
-
Level range
: 50 to 100 dB
• Insert the microphone housing carefully into the insertion hole of
the calibrator.
• Turn on the switch of calibrator and adjust the CAL potentiometer
of the unit. The level display will indicate the desired level. All
products are well calibrated before shipment. Recommended
Recalibration cycle: 1 year.
4. Technical data
Standard applied
IEC651 Type2, ANSI S1.4 Type2
Frequency range
31,5 Hz ~ 8 KHz
Measuring level
range
30 ~ 130 dB
Frequency weighting A/C
Microphone
1
/
2
inch electret condenser microphone
Display
LCD
Digital display
4 digits
Resolution: 0,1 dB
Display update 0,5 s.
Analog display
50 segment bargraph
Resolution 1 dB
Display update 100 ms
Time weighting
FAST (125 ms), SLOW (1 s)
Level ranges
Lo: 30 – 80 dB / Med: 50 – 100 dB
Hi: 80 – 130 dB / Auto: 30 – 130 dB
Accuracy
± 1,5 dB
(under reference conditions @ 94 dB, 1 KHz)
Dynamic range
50 dB
Screwdriver
Acoustic calibrator
