Máy hiệu chuẩn âm thanh chính xác Larson Davis CAL250

SPECIFICATIONS

Acoustic

Calibration Sound PressureLevel Initial

After 1 Year

114.0 dB ± 0.1 dB re: 20 μPa

± 0.2 dB re: 20 μPa

Equivalent Free-field Level

0.0 dB for 1/2″ microphones

Frequency

251.2Hz ± 0.7%

Harmonic Distortion

< 2 %

Stability After Pressing On

± 0.1 dB after 2 seconds

Minimum Stabilizing Time

10 seconds after coupling microphone and calibrator

Reference Conditions

101.3 kPa, 23 ºC and 50 % RH

Environmental

Static Pressure Range

65 kPa to 108 kPa

SPL variation < ± 0.25 dB

Temperature Range

-10 ºC to +50 ºC

SPL variation < ± 0.4 dB
Frequency variation < ± 2 Hz

Humidity Range

10 % to 90 % RH non-condensing

SPL variation < ± 0.4 dB
Frequency variation < ± 2 Hz

Storage Temperature

-40 ºC to +60 ºC

Storage Humidity

0 % to 90 % RH (non-condensing)

Physical

Effective Volume of Calibrator and Microphone

> 6.1 in3 (100 cm3)

Dimensions (L x W x H)

4.9 x 1.75 in (124 x 44.5 mm)

Weight

5.5 oz (156 g)

Power Supply

Battery

9 V NEDA 1604 A or IEC 6LR61

Battery Voltage Operating Range

6.7 V to 10 V

Traceability

Traceability

Traceable to National Institute of Standards and Technology (NIST)

Supplied Accessories

ADP019 Adaptor for 1/2″ Microphone

CCS003 Storage Case

9 V Alkaline Battery

Users Manual

Related Products

ADP020

Adaptor for 3⁄8″ microphones

ADP021

Adaptor for 1/4″ microphones

ADP023

Adaptor for 1⁄8″ microphones

ADP031

Adaptor for 3⁄8″ microphones

COMPLIANCE

Acoustic

ANSI S1.40-2006, Class 1

IEC 60942-2003, Class 1

IEC 60942:2017, Class 1

Safety

IEC 61010-1:2001

EMC

EU directive 2004/108/EC

IEC 61326-1:2005

For Use with Microphones of Type

IEC 61094-4:1995

1″ WS1P, WS1F and WS1D

1/2″ WS2P, WS2F and WS2D microphones; with ADP019 adaptor

1/4″ WS3P, WS3F and WS3D microphones with ADP021 adaptor

According to IEC 61094-1:2000

1/2″ LS2P

Other Microphones

3⁄8″ with ADP020 adaptor

1⁄8″ with ADP023 adaptor

For Use with Sound Level Meters and Noise Dosimeters

ANSI S1.4 Type 1

ANSI S1.25

IEC 61672 Class 1

IEC 61252

[1] Requires regular annual factory calibration. Limited to seven (7) years.

[2] Windscreen, O-rings, desiccants, fuses, for example.