The ACT/179 is compliant with BS EN 61672-1 Class 2 and is supplied with a detachable windshield and quality hard carry case.

The large high-contrast display includes both digital reading and analogue bar graph.

An instrument complying with BS EN 61672-1, set to slow response and A weighting, is suitable for measuring the sound pressure level of the alarm signal.

If you require a meter specifically for fire alarm commissioning, the ACT/179 is designed to meet the requirements of BS 5839-1

Measuring level range: 32 - 130dB

Frequency range: 20Hz - 8kHz

Frequency weighting: A or C

Level ranges:

Lo: 30 - 90dB

Med: 50 - 110dB

Hi: 70 - 130dB

Accuracy: +/-1.4dB (ref. 94dB@1KHz)

Dynamic range: 60dB

Time weighting: Fast or slow

Microphone: 1/2 inch electret condenser microphone

AC output: 1 Vrms at full scale (full scale is the upper limit of the selected level range)

DC output: 10mV/dB

Measurement Range: 30~130dB

Level Range: 30~90dB, 50~110dB, 70~130dB

Accuracy: +/-1.4dB (ref. 94dB@1KHz)

Frequency Weighting: A / C

Time Weighting: Fast, Slow

Frequency Range: 20Hz to 8KHz

Microphone: 1/2 inch electret condenser microphone

Auxiliary Outputs: AC/DC output

Battery: 9V battery

Dimensions: 258x55x25 mm

Weight: approx.185g

Measuring Range: 32 to 130dB Frequency Range: 20Hz to 8kHz Frequency Weighting: A or C Level Ranges Lo: 30 to 90dB Med: 50 to 110dB Hi: 70 to 130dB Accuracy: +/-1.4dB (at reference conditions) Dynamic Range: 60dB Time Weighting: Fast or Slow Microphone: 1/2 inch electret condenser microphone AC Output: 1V rms at full scale (full scale is the upper limit of the selected level range) DC Output: 10mV/dV Display: Liquid crystal (LCD) Digital, 4 digits, updates 2/second Bargraph, 30 segments, updates 10/sec Power: 1 x 9V, PP3 alkaline battery (IEC 6LR61, NEDA 1604A) Continuous Operating Time: 60 hours typical (alkaline battery) Automatic Power Off: After approx 30 minutes Low Battery Indication: Battery symbol is displayed Dimensions: 258 (L) x 55 (W) x 25mm (D) Weight: Approx 185g including battery Environmental/Other Specs Operating Conditions Temperature: 0 to 40C Relative Humidity: 10 to 90% RH Storage Conditions: Temperature: -10 to 60C Relative Humidity: 10 to 75% RH Compliance: BS EN 61672-1 Class 2 EMC: BS EN 61326-1

• ACT179 Manual.pdf
• ACT179 datasheet v1.1.pdf

Interactive features to go here