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
