Home Products Alat Kualitas Udara Kebisingan & Getaran GA6224 Sound Level Meter (CASTLE)
GA6224 Sound Level Meter (CASTLE)

• Equivalent continuous level (Leq)
• 5 user selectable percentile values (Ln)
• Wide Linearity range of 90dB
• RS232 for data output to optional software
• Memory storage for 10,000 datapoints
• Back-lit LCD display


Specifications for Castle 6224

Model Castle 6224
Description Precision Integrating Sound Level Meter
Standards Conforms with IEC 61672-1:2002, Class 1, IEC 60651:1979 and IEC 60804:2000 Type 1
Measuring ranges 27 – 130dB(A), 38 – 130dB(C), 41 – 130dB(F)
Frequency range 20Hz – 20kHz
Microphone 7146N 1/2” electret condenser microphone
Time weighting FAST, SLOW, IMPULSE
Peak range 50 – 133dB(A), 60 – 133dB(C), 70 – 133dB(F)
Level range Six ranges: 20 – 80dB, 20 – 90dB, 20 – 100dB, 20 – 110dB,
30 – 120dB, 40 – 130dB
Linearity range 90dB
Frequency weighting A, C, FLAT
Measurement items Lp, LMH, Leq, LAe, Lmax, Lmin, Lx (L5, L10, L50, L90, L95), Peak.
Measurement time 1s, 3s, 5s, 10s, 1min, 5min, 10min, 15min, 30min, 1h, 8h, 24h manual
(max: 199h 59m 59s)
Sampling interval 20.8μs (Leq), 10ms (Lmax, Lmin)
Lx Sampling interval 100ms
Display LCD with backlight (128×64 dots)
Digital display Four line, resolution 0.1dB (display update 1s)
Bar display Display update: 0.1s
Warning Over range: +3dB from upper limited scale
Under range: -0.6dB from lower limited scale
Battery display Four level display of battery condition
Built-in memory Approximately 10, 000 samples: 1, 000 sets of results
Built-in calendar Year/month/day/ hour : minute : second
Pause Pause and a function that deletes preceding 3 or 5 sec. data
Calibration signal Internal generator (1 kHz sine wave)
AC output 1Vrms (FS), output impedance: 600Ω, load impedance > 10kΩ
DC output 2.5V (FS), 0.25V/10dB, output impedance: 50Ω, load impedance > 10kΩ
RS232 interface RS-232C (asynchronous)
data bits : 8 bits
stop bit : 1 bit
parity : none
baud rate : 4800, 9600, 19200 bps
Power supply Four 1.5V size-AA batteries or AC adapter
Battery life Alkaline batteries: 20 hours continuous operation. Use of LCD backlight will
shorten battery life (approximately 1/3).
Operating temperature -10 to +50°C
Humidity 30% to 90% (without condensation)
Size 85(W) × 287(H) × 46(D) mm
Weight 370g (including batteries)