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Sound and Vibration Instrument Hire and Calibration

Bruel & Kjaer 2537 Specifications


Bruel & Kjaer Hand-arm Vibration Meter
 
B&K 2537 : HAVS - Hand Arm Vibration and General Purpose Meter £ 13 a day *
 

Conforms with BS EN ISO 5349 and DD ENV 28041 type 2.

Input : 0.35 pC/ms-2 for accelerometer type 4505

Frequency Weightings :


Hand Arm : 5 Hz to 1500 Hz
Linear : 6.3 Hz to 5000 Hz for -3 dB point
 

Settings :


Instantaneous - low range setting : 0.1 ms-2 to 316 ms-2
Instantaneous - high range setting : 1 ms-2 to 3160 ms-2
Peak - low range setting : 0.14 ms-2 to 447.2 ms-2
Peak - high range setting : 1.4 ms-2 to 4472 ms-2
 

Detectors :


RMS Averaging Time : 1 s
Peak Rise Time : < 100 µs
Automatic reset : 1 s intervals
 

Parameters :


Amin,  Amax,  Aeq,  Weq, and Aeq8 are calculated based on 1 s exponential averaging of the instantaneous RMS readings. Amp is the highest peak reading
 

Overload Indication :


Instantaneous indication of overload and latched overload. Stored results also include a latched overload indicator
 

Display :

4 line LCD, updated every second, showing :-
Input signal level - indicated with a quasi-analogue bar, updated 15 times per second
Selected parameter with level
Warnings for battery low and overload
Measuring range
Elapsed measurement time
Menus for displaying and editing settings
Recalled records
 

Memory :


40 records of overall results
 

Transducer :


Type 4505 accelerometer
 

Serial Interface :


Baud Rate : 9600
Data Bit : 8
Parity : none
Handshake : XON / XOFF
 

Results Output Formats :


Buffer (printer format) or all records (spreadsheet format)
 

AC Output :


Lemo socket : series 00, s/c protected
Output Signal : from input amplifier, no frequency weighting, approximately 0.5 V RMS at FSD
Load Impedance : 5 kΩ in parallel with 5 nF, minimum
 

Clock :


Real time calendar and measurement duration
 

Reference Calibration :

- gives an indication of 1 ms-2 when H-A weighted
Frequency : 159.15 Hz
Acceleration : 10 m-2
 

Environmental :


Operating Temperature : -10 to +50°C
Humidity : < 90 %RH at 40 °C
 

Batteries :


Batteries : 4 x 1.5 V Lr6, AA size, alkaline cells
Battery Life : 14 h, about
Internal back-up battery : 6 months typically if fully charged
 

Physical :


Size : 257 x 97 x 41 mm
Weight : 460 g including batteries
 
E&OE - specifications subject to change without notice.