Optimus Green Sound Level Meters


  • The Optimus Green – the latest in environmental sound level meter design and technology


Optimus Green Sound Level Meters

Key Features

Includes everything you need for occupational noise measurements
Large screen makes the data incredibly easy to read
Lightweight and easy-to-hold shape designed for ease of use
Available as either a Class 1 or a Class 2 instrument
No complicated setup procedure – just switch on, calibrate and start measuring
Bluetooth connectivity, allowing you to use your device with a compatible smartphone

Technical Specifications

Applicable Standards:
IEC 61672-1:2013 Class 1 or Class 2
IEC 61672-1:2002 Class 1 or Class 2 Group XIEC
IEC 60651:2001 Type 1 I or Type 2 I
IEC 60804:2000 Type 1 or Type 2
IEC 61252:1993 Personal Sound Exposure Meters
ANSI S1.4 -1983 (R2006), ANSI S1.43 – 1997 (R2007)
ANSI S1.25:1991
1:1 & 1:3 Octave Band Filters to IEC 61260 & ANSI S1.11-2004

Type Approvals for Class 1 Instruments:
LNE-25387-1 IEC 61672-1:2013
NF EN 61672-1:2014
IEC 61260:1996
NF EN 61260:1996
EN 61672-1:2003
PTB-1.53-4052960 DIN EN 61672-1:2003-10
DIN EN 61672-2:2004-08
DIN 45657:2005-03
Applus+ 02-001-B-62/13-R
UNE-EN 61672-1:2005

Class 1 MK:224 pre-polarized, Class 2 MK:216 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, <21dB(A) Class 2

Frequency Weightings:
RMS & Peak : A, C, & Z Measured Simultaneously
Frequency Bands: 10 x 1:1 Octave Bands (31.5Hz to 16kHz, A, B & C variants)
Frequency Bands: 36 x 1:3 Octave Bands Measured (6.3Hz to 20kHz, B & C variants)
Frequency Bands: 33 x 1:3 Octave Bands Displayed (12.5Hz to 20kHz, B & C variants)
Additional Metrics: LAeq LF (20Hz to 200Hz) & Leq LF (20Hz to 200Hz)

Time Weightings:
Fast, Slow & Impulse Measured Simultaneously

High resolution OLED display. Ambient light sensor & illuminated keypad

4GB with 32GB factory fit option

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:
Up to 30 seconds of audio notes with each measurement

BLE compatible with Android and iOS devices.
Cirrus mobile applications available from Google Play and the App Store

Acoustic Fingerprint Audio Recording:
Off, Manual, Threshold Triggered, Advanced Trigger
User options:
Studio Quality – 96kHz/32bit WAV format
Standard quality – 16kHz/16bit WAV format
Pre-Trigger function

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

Ln Statistical Values:
14 independent statistical Ln values calculated from 1/16th LAF
7 preset to L1.0, L5.0, L10.0, L50.0, L90.0, L95.0 & L99.0
7 user defined Ln values. CR:172C & CR:171C allow for an additional 14 Ln values with independent time and frequency weighting.

Measurement control:
Measurement control with user selectable duration of manual, 1 min, 5 min, 10 min, 15 min,30 mins, 1 hour, Lden
Automatic Synchronisation & Repeat
Pause & Back Erase with user selectable duration

Size: 283mm x 65mm x 30mm
Weight: 300gms/10oz

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

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

Material: High Impact ABS-PC with soft touch back & keypad

Temperature: Operating -10?C to +50?C, Storage -20?C to +60?C
Humidity: Up to 95% RH Non Condensing

Electromagnetic performance:
IEC 61672-1:2002 & IEC 61672-2:2003
IEC 61672-1:2013 & IEC 61672-2:2013
Except where modified by EN 61000-6-1:2007 & EN 61000-6-1:2007

Language options:
English, French, German, Spanish. Other language options may be available

Software Support:
NoiseTools Download, Configuration & Analysis software supplied as standard. Compatible with Microsoft Windows XP, Vista, 7 & 8 (32bit & 64bit)