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Castle Sonus GA257B Dosemeter Noise Dosemeter, 75dB to 140dB, 8kHz max

RS Stock No.:: 909-1897
Mfr. Part No.:: 01GA257B
Brand:: Castle

Castle Sonus GA257B Dosemeter Noise Dosemeter, 75dB to 140dB, 8kHz max

Subtotal (1 unit)*

£685.00

(exc. VAT)

£822.00

(inc. VAT)

FREE delivery for orders over £50.00

In Stock

Plus 2 unit(s) shipping from 30 September 2025

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 +	£685.00

*price indicative

Calibration Options:

Castle Datalogging Sound Level Meter, 67dB to 140dB, 20kHz max with RS Calibration

Calibration Type:: RSCAL

RS Stock No.: 921-3081

Each

£760.00

(exc. VAT)

£912.00

(inc. VAT)

RS Stock No.:: 909-1897
Mfr. Part No.:: 01GA257B
Brand:: Castle

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Castle
	Maximum Sound Level	140dB
	Minimum Sound Level	75dB
	Resolution	0.1 dB
	Accuracy Class	IEC 61252:1993
	DOSE Measurement	Yes
	Weighting	A
	Display Type	LCD
	Battery Type	9V PP3
	Fast/Slow Time Averaging	Fast
	Data Logging	No
	Interface Type	USB
	Maximum Frequency	8kHz
	Maximum Operating Temperature	+50°C
	Minimum Frequency	20 Hz
	Model Number p	Sonus GA257B Dosemeter
	Minimum Operating Temperature	-10°C

	Select all
	Brand Castle
	Maximum Sound Level 140dB
	Minimum Sound Level 75dB
	Resolution 0.1 dB
	Accuracy Class IEC 61252:1993
	DOSE Measurement Yes
	Weighting A
	Display Type LCD
	Battery Type 9V PP3
	Fast/Slow Time Averaging Fast
	Data Logging No
	Interface Type USB
	Maximum Frequency 8kHz
	Maximum Operating Temperature +50°C
	Minimum Frequency 20 Hz
	Model Number p Sonus GA257B Dosemeter
	Minimum Operating Temperature -10°C

Castle GA257B Sonus Personal Noise Exposure Meter

Castle GA257B is a high specification personal sound exposure meter fully compliant with IEC 61252-1. It is designed for industrial safety officers and safety managers, for compliance with ’The Control of Noise at Work regulations 2005’, and is especially suited for users who move around in the execution of their work. This meter gives simultaneous Lex (sound exposure) and peak measurement for assessments to the Control of Noise at Work Regulations 2005. It has a high specification measurement microphone and is cased in tough, crack-resistant ABS plastic.

Simultaneous measurement of Lp, Leq, Zpeak, Lep,d, Dose, Dose / Hour, Pa2H
'A' frequency weighting
'Slow' Time weighting
Sound pressure (Lp) to 0.1dB resolution
Integrated equivalent level (Leq) measurement
Personal sound exposure level (Lep,d)
Noise dose%, Noise dose per hour%, Pascal squared hours
Zpeak - maximum Z weighted peak level
Elapsed time (running time hrs, min, sec)
Over Load and Under Range indication
Housed in tough, crack resistant ABS plastic
Dimensions 60mm x 30mm (excluding pocket clip) x 135mm (210mm with microphone)
Weight 200g (without battery)

Standards

IEC 61252:1993

Castle SONUS Personal Sound Exposure Dosemeter

Castle GA257B is a high specification personal sound exposure meter fully compliant with IEC 61252-1. It is designed for industrial safety officers and safety managers, for compliance with ’The Control of Noise at Work regulations 2005’, and is especially suited for users who move around in the execution of their work. This meter gives simultaneous Lep'd (daily personal sound exposure level) and peak measurement for assessments to the Control of Noise at Work Regulations 2005. It has a high specification measurement microphone and is cased in tough, crack-resistant ABS plastic.

Standards
IEC 61252:1993

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