BRUEL & KJAER 2203 - Technical Specifications

Specifications 2203
(Specifications refer to 2203 with Extension Rod UA 0196 and Microphone · 4165, unless otherwise stated)
Measuring Ranges:
Weighting
Network
Minimum Level (dB)
External Filter Type No .
Microphone Max .
Type No. Level
f---.---.--,.--+-----.--.;__-r----+----.,..---:__r---~---i
(dB)
1 61 3 (Octave)
161 6 ( 1/ 3 Octave)
0 ,5
to
0,5 to
A B C Lin
1" 4144 , 4145 140 19 23 28 38
1/ 2"fl-165,*4166 140 26 31 36 43
1/ 2" f4133 , 4134 154 39 43 48 55
* Included in 2203
Frequency Response: (Microphone)*
(zero degree incidence , free-field)
±1 dB: 4Hz to 12 , 5kHz
±2dB: 3Hz to 20kHz
* ) individually calibrated
Frequency Response: (Amplifier)
± 0,5 dB: 40Hz to 25kHz
± 1 dB: 20Hz to 25kHz
± 2 dB: 10Hz to 40kHz
Frequency Weighting :
A , B and C to IEC 1 79 . (See Fig.1)
Input Impedance:
> 2 GO / / 2,8 pF
31 ,5 to
63Hz
25
;36
48
(with extension
cable AO
0128
> 2 GO/ / 3,2 pF)
Max. Input Voltage:
1 OV RMS (sinusoidal) (See also curves
Fig. 17)
Total Amplification:
110dB
Attenuators :
20 to 140 dB FSD in 1 0 dB steps, accu-
racy ±
0,2 dB
Output Impedance:
< 1000 . Maximum load 10 kO or 1 nF
for less than 0,2 dB error.
Maximum Output Voltage :
16V peak, (3,16V RMS for FSD)
External Filter Sockets:
Output Impedance: < 50 in series with
1 00tJF
Input Impedance : 146 kO
Inherent Noise :
Linear: max . 40 tJV referred to input
Curve A : max . 4tJV referred to input
Detector:
RMS Accuracy:
± 0, 5 dB for crest factors be low 3
± 1 dB
for crest factors below 5
Meter Damping :
" Fast" and " Slow" to IEC 1 79
125 to
20 to 100 to
16 (31 ,5)
16 (40)
250Hz
kHz
80Hz 400Hz
kHz
20 15 25
22
22
30 24
34 27
24
42 36
46 39 36
Meter :
Graduation :
1 dB
divisions from - 1 0 to 0 dB
0, 5 dB divisions from 0 to 1 0 dB
Accuracy:
0, 5 dB for deflections below 0 dB
0, 2 dB for deflections above 0 dB
Microphone Sensitivity:
Lin
30
38
50
Approx . 50 mV / Pa individually calibrated
Microphone Temperature Coefficient:
Approx. -0,01 dB /° C
Microphone Temperature Range:
- 50 to + 60 °C
Microphone Long Term Stability :
1 dB/ 300 years at operating tempera -
ture 27 ° C. At 1 00 ° C, typically 1 dB per
100 hours
Polarization Voltage:
200V
Calibration :
Internal square wave generator , approx.
1 kHz,
stability better than ± 0 ,2 dB
Directional Characteristics:
See curves page 7
Microphone K-factor Adjustment:
+ 4 dB to - 2 dB
Reference Conditions for calibration valid-
ity :
Type of Sound Field : Free
Ref. Direction of Incidence : P erpendicu-
lar to microphone diaphragm
Ref. Sound Pressure : 20tJPa
Ref. Sound Pressure Level: 84 dB
Ref. Frequency: 1 kHz
Ref. Temperature: 20 °C
Ref. Measuring Range : 80 dB (90 dB
FSD)
Absolute accuracy at Reference condi -
tions :
± 0 , 7 dB
Effect of Humidity:
< 0, 5 dB from 0 to 90 % RH provided no
condensation occurs
Effect of Vibration:
See curves Fig.15 and Fig 16
Effect of Sound Field:
At least 60 dB below sensitivity of micro-
phone 4165
Effect of Ambient Pressure:
Approx . -0,001 dB per mbar at
1013 mbar
Effect of Electrostatic field:
Negligible with microphone grid fitted
Effect of Electromagnetic Field :
80A / m (50Hz) gives:
< 36 dB(A)
< 38 dB( B)
<
46 dB(C)
< 46 dB(Lin)
Effect of Temperature :
- 10to 50 ° C(14to 122 ° F) ± 0,5dB
Batteries:
3 x 1, 5V. IEC Type R20 (B & K order No.
OB 0004)
Battery Life: (Continuous operation)
1 2 hours with standard batteries
(Varta Super Dry 282)
(National Neo Hi-Top UM 1 NE)
50 hours with Alkaline batteries
(Mallory MN 1 300)
20 hours with rechargeable NiCd-cells
(B & K order No. OB 0008 , 3rqd .)
(Saft Voltablock VR 4D)
(Varta
RS 4)
Recharging from Power Supply Type
2808 , Battery Box ZG 0073 , and Charg-
ing
Adaptor AO 0043 + 3 dummy cells
ZR 0017
Dimensions :
90 X 120 X 550 mm (4 X 5 X 21,7 in)
(320 mm . ( 12,7 in) without extension
rod)
Weight:
3 kg (6,61b)
Accessories included:
1 / 2" Condenser Microphon e Type 41 65
Flexible Extension Rod UA 0196
Input Adaptor JJ 2614
Windscreen UA 0237
3 Screened Plugs JP 0006
3 Batteries OB 0004
1 Screwdriver OA 0001
1 Screwdriver OA 0027
Accessories Available :
See survey page 4