BRUEL & KJAER 2203 Instructions And Applications

3. OPERATION
3.1. BATTERY REPLACEMENT AND GENERAL CONSIDERATIONS
3.1.1. Battery Replacement
The three 1 ,5 volt standard flashlight cells (Type R 20 in IEC Publica-
tion 86-2) are replaced by unscrewing the four screws holding the bot-
tom cover of the 2203. The batteries are placed in the battery compart-
ment such that the positive terminals point to the front panel of the in-
strument.
Rechargeable nickel cadmium batteries may also be used giving the
advantages of longer operating time without battery change and reduced
long term battery costs.
The 2203 may also be powered directly from the Noise Dose Meter
Type 4423 or Hearing Aid Test Box Type 4217 using Battery Adaptor
UA 0363 as described in the 4423 or 4217 Instruction Manual.
3.1.2. General Considerations
• Store the instrument in a dry, preferably warm place.
•
Remove batteries if instrument is not used for a long time.
• Connect and disconnect microphones and adaptors with the power
off.
• Assemble microphones and adaptors at the same temperature.
• Use only light finger torque to tighten microphone and adaptors.
• In dry weather, discharge static electricity from your b cr dy before fit-
ting microphones .
• Keep dust and foreign objects from the microphone diaphragm. Never
touch the diaphragm with any object.
3.2. CALIBRATION FOR SOUND MEASUREMENTS
3.2.1. Using the Sound Level Calibrator or Pistonphone
A source of known sound level and stability is placed over the meas-
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BRUEL & KJAER 2203 Specifications

General

Brand	BRUEL & KJAER
Model	2203
Category	Measuring Instruments
Language	English