Cirrus CR161A Optimus red Class 1 Sound Level Meter (20~140 dB, Class 1)

-Applicable Standards

IEC 61672-1:2013 Class 1

IEC 61672-1:2002 Class 1

IEC 60651:2001 Type 1 I

IEC 60804:2000 Type 1

IEC 61252:1993 Personal Sound Exposure Meters

ANSI S1.4 -1983 (R2006), ANSI S1.43 - 1997 (R2007)

ANSI S1.25:1991

-Microphone: Class 1 MK:224 pre-polarized,

-Microphone Preamplifier: MV:200 Removable Preamplifier (All versions)

-Total Measurement Range:

20dB to 140dB RMS Single Range

Noise Floor: <18dB(A) Class 1

-Frequency Weightings: RMS & Peak : A, C, & Z Measured Simultaneously

-Time Weightings: Fast, Slow & Impulse Measured Simultaneously

-Display: High resolution display. Ambient light sensor & illuminated keypad

-AuditStore: Measurement verification data stored in secure memory

-Time History Data Rates (Global settings): 10ms, 62.5ms, 125ms, 250ms, 1/2 sec, 1 sec, 2 sec (User selectable)

-Dimensions

Size: 283mm x 65mm x 30mm

Weight: 300gms/10oz

-Batteries: 4 x AA Alkaline

-Battery life

Typically 12 hours with Alkaline AA

Typically 20 hours with Lithium AA Non-Rechargeable

Battery life is dependent upon the battery type, quality & screen brightness

-Connections

USB Type B to PC

AC & DC Output via ZL:174 (2 x Phono, 1m)

Multi-pin IO for external power via ZL:171 cable (2.1mm socket)

External Power: 5v-15v via MultiIO socket via ZL:171 cable (2.1mm socket)

-Tripod Mount: 1/4" Whitworth socket

-Case: Material: High Impact ABS-PC with soft touch back & keypad

-Environmental

Temperature: Operating -10°C to +50°C, Storage -20°C to +60°C

Humidity: Up to 95% RH Non Condensing

-Measurement Functions

-Displayed Functions

LXY, LXYMax, LXYMin, LXeq, LCPeak, LZPeak, LCeq-LAeq, LXE

Graph of Short LAeq, LCPeak

Integrators 2 & 3: TWA, Dose%, Est Dose%v

Measurement Run Time

Datasheet