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Bruel & Kjaer Type 2250L Light Sound Level Meter

Description

Type 2250 Light is a modular Class 1 sound level meter measuring all standard acoustic parameters simultaneously, with frequency analysis and logging available in the optional application modules. It is a simplified version of Type 2250 with the same intuitive user-interface and measurement precision, but with fewer application modules.

Type 2250 Light is designed to address workplace noise compliance, environmental noise assessment and product development. It connects to a PC via USB for data post-processing or remote control.

Features

  • 5.6 Hz to 20 kHz broadband linear frequency range with supplied microphone Type 4950
  • 16.4 dB to 140 dB A-weighted dynamic range with supplied microphone Type 4950
  • Communication via USB, LAN, or GPRS/3G modems
  • USB 2.0 host for connection to printer, GPS, weather station, modem
  • Plug-in rechargeable Li-ion battery (> 8h operation)

Specifications

Specifications apply to 2250 Light fitted with Microphone Type 4950 and Microphone Preamplifier ZC-0032

SUPPLIED MICROPHONE

Type 4950: Prepolarized Free-field ½″ Microphone

Nominal Open-circuit Sensitivity: 50 mV/Pa (corresponding to −26 dB re 1 V/Pa) ± 2 dB

Capacitance: 12.5 pF (at 250 Hz)

MICROPHONE PREAMPLIFIER ZC-0032

Nominal Preamplifier Attenuation: 0.3 dB

Connector: 10-pin LEMO

Extension Cables: Up to 100 m in length between the microphone preamplifier and 2250 Light, without degradation of the specifications

KEYBOARD

Pushbuttons: 11 keys with backlight, optimised for measurement control and screen navigation

ON-OFF BUTTON

Function: Press 1 s to turn on; press 1 s to enter standby; press for more than 5 s to switch off

STATUS INDICATORS

LEDs: Red, amber and green

DISPLAY

Type: Transflective back-lit touch screen 240 × 320 dot matrix

Black and White Scheme

Backlight: Adjustable level and on-time

USER INTERFACE

Measurement Control: Using pushbuttons on keyboard

Setup and Display of Results: Using stylus on touch screen or pushbuttons on keyboard

Lock: Keyboard and touch screen can be locked and unlocked

USB INTERFACE

USB1.1 OTG Mini B socket

MODEM INTERFACE

Hayes compatible GSM or standard analogue modems connected through the Compact Flash slot

HEADPHONE SOCKET

Connector: 3.5mm Minijack stereo socket

Max. Peak Output Level: ± 1.4V

Output Impedance: 32Ω in each channel

EXTERNAL DC POWER SUPPLY REQUIREMENTS

Used to charge the battery pack in the instrument

Voltage: 8 . 24VDC, ripple voltage < 20mV

Current Requirement: min. 1.5A

Power Consumption: < 2.5W, without battery charging, < 10 W when charging

Cable Connector: LEMO Type FFA.00, positive at centre pin

BATTERY PACK

Type: Li-Ion rechargeable

Typical Operating Time: > 8 hours

STORAGE SYSTEM

Internal Flash-RAM (non-volatile): 20 Mbyte for user setups and measurement data

External Secure Digital Memory Card (SD-card): For store/recall of measurement data

External Compact Flash Memory Card (CF-card): For store/recall of measurement data

CLOCK

Back-up battery powered clock. Drift < 0.45 s per 24 hour period

WARM-UP TIME

From Power Off: < 2 minutes

From Standby: < 10 seconds

TEMPERATURE

IEC 60068.2.1 & IEC 60068.2.2: Environmental Testing. Cold and Dry Heat

Operating Temperature: .10 to + 50°C (14 to 122°F), < 0.1 dB

Storage Temperature: .25 to +70°C (.13 to +158°F)

HUMIDITY

IEC 60068.2.78: Damp Heat: 90% RH (non-condensing at 40°C (104°F)).

Effect of Humidity: < 0.1 dB for 0% < RH < 90% (at 40°C (104°F) and 1 kHz)

MECHANICAL

Environmental Protection: IP 44

Non-operating:

IEC 60068.2.6: Vibration: 0.3 mm, 20 m/s2, 10 . 500 Hz

IEC 60068.2.27: Shock: 1000 m/s2

IEC 60068.2.29: Bump: 4000 bumps at 400 m/s2

WEIGHT AND DIMENSIONS

650 g (23 oz.) including rechargeable battery

300 × 93 × 50mm (11.8 × 3.7 × 1.9″) including preamplifier and microphone

LANGUAGE

User Interface in Catalan, Croatian, Czech, Danish, English, Flemish, French, German, Hungarian, Japanese, Italian, Polish, Portuguese, Romanian, Serbian, Slovenian, Spanish, Swedish and Turkish

Standards

CISPR
CISPR 11
CISPR 14 - 1
CISPR 14 - 2
CISPR 14 - 2
CISPR 16 - 1
CISPR 16 - 2
CISPR 16 - 3
CISPR 16 - 4
CISPR 22
CISPR 24
IEC
IEC/TR EN 61000 - 1 - 1
IEC/TR EN 61000 - 2 - 1
IEC/TR EN 61000 - 2 - 3
IEC EN 61000 - 3 - 2
IEC EN 61000 - 3 - 4
IEC/TC EN 61000 - 3 - 5
IEC EN 61000 - 4 - 2
IEC EN 61000 - 4 - 3
IEC EN 61000 - 4 - 4
IEC EN 61000 - 4 - 5
IEC EN 61000 - 4 - 6
IEC EN 61000 - 4 - 7
IEC EN 61000 - 4 - 8
IEC EN 61000 - 4 - 9
IEC EN 61000 - 4 - 11
European
EN 50 081 part 1
EN 50 081 part 2
EN 55 011
EN 55 013
EN 55 014
EN 55 015
EN 55 020
EN 55 022
EN 55 024
EN 50 082 part 1
EN 50 082 part 2
EN 50 093
American
FCC Part 15
MIL-STD - 461E