Kimo CAL 300 User manual
CAL 300
ACOUSTIC CALIBRATOR
DESCRIPTIONS
The acoustic calibrator is the key accessory to calibrate measurement system.
The acoustic source is defined in pressure level and in transmitting reference, it corresponds to the
current class 1 standards : NF EN 60 42#: 2003 and CEI 60 42#: 2003.
It delivers two acoustic pressure levels according to your selection : 4dB or 114dB with a 1000 Hz
frequency.
This calibrator is designed to remain compatible with microphones of different diameters. See
technical specifications.
Calibration of a sound level meter is done in pressure in the cavity of the calibrator. The sound level
meter being generally used in free field, please observe the free field correction term indicated in its
user manual. It is the same in case of diffuse field using.
Flashing green or orange light : wait
Stabilized green or orange light : calibration is ready
Red light : change batteries
Button : select the acoustic
pressure level : 4 or 114dB and
launch calibration
Microphone and adapter ring coupler
Kimo CAL 300 Sound Level Meter Acoustic Calibrator
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➢ Insert the adapter ring according to the microphone diameter of the device to
calibrate. Ensure that the ring is correctly positionned, it has to come to a stop down
of the calibrator housing.
➢ Put the calibrator on the microphone, until the microphone comes to a stop down of
the ring. Perform this move slowly and smoothly so as not to damage the
microphone. Prefer to put vertically the sound level meter and the microphone.
●Turned-off calibrator :
Nominal acoustic pressure level : 94 dB
- Press ONCE on the button of the front face. The light turns green and flashes.
- Wait for a while the stabilization of the green light that means the proper value of
the acoustic pressure level of the calibrator : 4.0 dB.
Nominal acoustic pressure level : 114 dB
- Press TWICE on the button of the front face. The light turns orange and flashes.
- Wait for a while the stabilization of the orange light that means the proper value of
the acoustic pressure level of the calibrator : 114.0 dB.
CALIBRATION
uring calibration :
If the light flashes, environmental conditions are not respected :
● Ambient noise is too important
●Shocks given involuntarily
Wait for the stabilization of the green or orange light before resume the calibration process. It is
possible to launch again pressing the button.
If the light turns red, batteries are defective and shall be replaced.
- Start the calibration process of the instrument as described in its user manual.
- The calibrator stops automatically the emission of acoustic pressure level after about one minute.
Note : select the level 4 or 114dB pressing the button when the calibrator is turned on.
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CHANGE BATTERIES
RECOMMENDATIONS
This calibrator is an accurate device that requires care when handling and storing it.
Do not expose it to shock or to extreme and repeated environmental constraints (temperature –
hygrometry).
Store it in its storage and remove batteries in case of long period of inactivity.
Despite these recommendations, the calibrator stays an extremely reliable device, easy-to-use and
with few maintenance : simple replace batteries when they are worm and make a regular checking.
Batteries must be changed when :
●The light turns red.
●The light does not turn on at all.
To change batteries :
➢ Remove the front part at the back of the device pressing strongly
the rubber button. Front part is released slightly. Fold it up
completely.
➢ Remove the two old batteries. Insert new 1.5 V AAA – LR03 type
batteries respecting proper polarity.
➢ Put correctly the front part in its slot and close pressing strongly on
it.
Stop the calibrator :
- The calibrator stops automatically the emission of acoustic pressure level after about one minute
et turns off.
- To stop deliberately the calibrator during a calibration, press the button more than 5 seconds.
- The calibrators stops automatically if the stabilization of the acoustic pressure level of 4 dB or
114 dB is not reached after 7 or 8 seconds.
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Main level of acoustic
pressure
Main frequency
istortion
Authorization for calibration
Transmission time
Standards
Accuracy
CE marking
Compatible microphone
Standard ambient conditions
4 dB ± 0.25 dB
1000 Hz ± 2 Hz
DHT < 2 %
4dB : stabilized green light – 114dB : stabilized orange light
> 1 minute
NF EN 60 42 : 2003 – CEI 60 42 : 2003
Class 1
As per European Directive 2004/108/CEE and Standard product
23 °C – 50% HR – 1013 hPa
TECHNICAL FEATURES
1 inch microphone without adapter (as per CEI 610 4-4 standard)
½ inch microphone with BC12 ring
10 mm microphone with BC10 ring
3/8 inch microphone with BC38 ring
Other microphones with suitable rings
Operating conditions -10 °C to +50 °C / 25% to 0% HR / 650 hPa to 1080 hPa
Power supply
Autonomy at 20 °C
Storage
Overall dimensions
Weight
2 alkaline batteries – 1.5 V type CEI : AAA – LR03
More than 1500 calibrations
From 0°C to +60 °C
Length : 185 mm – Width : 35 mm – Thickness : 31 mm
118 g (with batteries)
Additional acoustic pressure
level 114DB ± 0.25 dB
MAINTENANCE
CAL300 calibrator is linked to national standards. As part of quality insurance standards, we
recommend performing an annual checking.
CAL300 is supplied with its user manual, two alkaline batteries and an adapter ring for ½ inch
microphone.
SUPPLIED WITH...
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