Get exclusive volume discounts, bulk pricing updates, and new product alerts delivered directly to your inbox.
By subscribing, you agree to our Terms of Service and Privacy Policy.
Direct access to our certified experts
Get exclusive volume discounts, bulk pricing updates, and new product alerts delivered directly to your inbox.
By subscribing, you agree to our Terms of Service and Privacy Policy.
Direct access to our certified experts

- Applicable Standards
IEC 61672-1:2013 Class 1
IEC 61672-1:2002 Class 1
IEC 60651:2001 Type 1 I
IEC 60804:2000 Type 1
IEC 61252:1993 Personal Sound Exposure Meters
ANSI S1.4 -1983 (R2006), ANSI S1.43 - 1997 (R2007)
ANSI S1.25:1991
- Microphone: Class 1 MK:224 pre-polarized,
- Microphone Preamplifier: MV:200 Removable Preamplifier (All versions)
- Total Measurement Range:
20dB to 140dB RMS Single Range
Noise Floor: <18dB(A) Class 1
- Frequency Weightings : RMS & Peak : A, C, & Z Measured Simultaneously
Frequency Bands: 10 Octave Bands (31.5Hz to 16kHz, C & D variants)
- Time Weightings: Fast, Slow & Impulse Measured Simultaneously
- Display: High resolution display. Ambient light sensor & illuminated keypad
- Memory: 4GB (B, C & D Versions), 32GB factory fit option
- AuditStore:Measurement verification data stored in secure memory
- Time History Data Rates (Global settings): 10ms, 62.5ms, 125ms, 250ms, 1/2 sec, 1 sec, 2 sec (User selectable)
- VoiceTag Audio Recording (B, C & D Versions): Up to 30 seconds of audio notes with each measurement
- Integrators: Three simultaneous "virtual" noise meters. Integrator 1 is preset to Q3 for Leq functions. Integrators 2 & 3 can be configured with the following:
Exchange Rate: 3, 4 or 5 dB
Threshold: 70dB to 120dB (1 dB steps)
Time Weighting: None or Slow
Criterion Level: 70dB to 120dB (1 dB steps)
Criterion Time: 1 to 12 hours in 1 hour steps
- Integrator Quick settings:
EU, OSHA HC & OSHA NC, OSHA HC & ACGIH,
MSHA HC & MSHA EC, Custom 1 & Custom 2
- Measurement control: Pause & Back Erase with user selectable duration
- Dimensions:
Size: 283mm x 65mm x 30mm
Weight: 300gms/10oz
- Batteries: 4 x AA Alkaline
- Battery life:
Typically 12 hours with Alkaline AA
Typically 20 hours with Lithium AA Non-Rechargeable
Battery life is dependent upon the battery type, quality & screen brightness
- Connections:
USB Type B to PC
AC & DC Output via ZL:174 (2 x Phono, 1m)
Multi-pin IO for external power via ZL:171 cable (2.1mm socket)
External Power: 5v-15v via MultiIO socket via ZL:171 cable (2.1mm socket)
- Tripod Mount: 1/4" Whitworth socket
- Case: Material: High Impact ABS-PC with soft touch back & keypad
- Environmental:
Temperature: Operating -10°C to +50°C, Storage -20°C to +60°C
Humidity: Up to 95% RH Non Condensing
- Measurement Functions:
- Displayed Functions:
LXY, LXYMax, LXYMin, LXeq, LCPeak, LZPeak, LCeq-LAeq, LXE, LAIeq
Graph of Short LAeq, LCPeak
Measurement Run Time
Integrators 2 & 3: TWA, Dose%, Est Dose%
Real-Time Octave Band Filters
NR & NC values & curves
- Stored Functions:
LXYMax & Time History of LXYMax
LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak
Time History of LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
Integrators 2 & 3: LAVG , TWA. %Dose
Time History of LAVG
Octave Bands: Overall Leq & Leq Time History for each band
NR & NC values & curves
Measurement Run Time
Time & Date of Measurement Start
where x=A ,C ,Z; y= F, S, I
Other functions may calculated by the NoiseTools software and displayed on download.