Casella-cel CEL24X Bedienungsanleitung PDF herunterladen (Seite 17)

12. EQUIPMENT SPECIFICATION

SPECIFICATION CHARACTERISTICS

STANDARDS

IEC

61672-1

2002-5 (Electro-Acoustics

–

Sound

Level

Meters)

Gro up

‘X’

instruments,

Performance

Class

2.

IEC

60651: 1979 Type 2 .ANSI S1.4

type

2A Specification for

Sound Level Meters.

CEL-244/246 Models:

IEC 60804: 2000 Type 2, ANSI

S1.43: 1997 (R2007) Type 2

RANGE:

Display

range:

30 -130dB(A)

RMS,

available

in

2

ranges,

30 -100dB

and

60 -130dB.

Linear

operating

range

10dB

above

noise

floor.

RMS

FREQUENCY

WEIGHTINGS

A

and

C

filter

weightings,

satisfying

IEC

61672-1:

2002

Clas s

2,

ANSI

S1.4

Type

2A.

NOISE

F

LOOR

Total

noise

floor

typically

<33dB(A).

FREQUENCY

RESPONSE

Overall

frequency

response

as

per

IEC

61672-1:

2002

Class

2,

ANSI

S1.4

Type

2A.

TIME

WEIGHTINGS

Fast,

Slow

and

Impulsive

according

to

IEC

61672-1:

2002,

ANSI

S1.4

Type

2A.

REFERENCE

CONDITIONS

20

o

C

air

temperature,

65%

relative

humidity,

101.325kPa

atmospheric

pressure. Nominal

reference

level

=

114.0dB

at

1k Hz.

Free

field

perpendicular

incidence.

OPERATING

ENVIRONMENTAL

CONDITIONS

Humidity

5

to

90%

RH

in

the

absence

of

condensation.

Temperature Range

0 – 40

o

C.

Pressure

65

to

108kPa.

Effects

of

Humidity

Less

than

±0.5dB

over

the

range

30

to

90%

relative

humidity

(non-condensing),

relative

to

th e

value

at

reference

conditions.

STORAGE

ENVIRONMENTAL

CONDITIONS

Humidity

0

to

90%

RH

in

the

absence

of

condensation.

Temperature

Range

-20

to

+60

o

C.

Pressure

65

to

108kPa.

MICROPHONE

Internal

electret

capsule

10mV/Pa

nom

+/-3dB

within

½”

preamplifier.

CALIBRATION

Auto

calibration

by

app lication

of

1kHz

@

114

or

94dB

calibrator

(CEL-110/2

or

CEL-110/1).

±1dB

calibration

range.

POWER

SUPPLY

External

DC

5VDC

(via

US

B

5

pin

mini

B).

Batteries

3x

AA,

Rechargeable

NiMH

or

Alkaline

cells.

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