​Optimus Red Sound Level Meters

  • ​Includes everything you need for occupational noise measurements
  • Measures everything you need simultaneously to save time
  • No complicated setup - just switch on, calibrate and start
  • Large OLED display so the data is easy to read
  • Lightweight, ergonomic design for ease of use
  • High Performance guaranteed

The Perfect Solution of Occupational Noise Measurements

Optimus Red Sound Level Meters
Measuring noise at work doesn't need to be a time-consuming task. The Optimus Red Sound Level Meter uses the very latest digital technology to save you time.
By measuring every parameter you need simultaneously, it can record everything in one measurement. There's no concern about choosing the wrong function or missing any data. All you need to do to get going is switch on, calibrate and start. It's that simple.
All of your measurement data displays on the large OLED screen, so you can see straight away if there are any occupational noise problems in your workplace. You can easily navigate screens to see the data you need during measurements.
Whether you need to meet the UK and EU Regulations, measure to OSHA HC & PEL, MSHA, ACGIH

Why Choose Optimus Red?

  • Backed by 15 Year "No Quibble" Warranty for your peace of mind
  • Product training available at a low cost
  • High Performance to Class 1 or Class 2 Standard
  • Quick, Simple and easy to operate
  • Fast, Slow & Impulse Time Weightings
  • dB(A), dB(C) and dB(Z) Frequency Weightings
  • Real-time 1:1 Octave Band Filters (optional)
  • VoiceTag™ voice note recording
  • AuditStore™ measurement verification
  • High resolution colour OLED display and back-lit keypad
  • Measure up to 140dB(A) and 143dB(C) Peak with a single 120dB measurement range
  • Pause & Back Erase as standard
  • 4GB memory with the option of 32GB
  • Long battery life

Downloading Your Data is Simple

If you choose the data logging version of the Optimus Red, we'll include our NoiseTools noise analysis software so you can keep a record of your measurements. If you choose the Optimus Red with 1:1 Octave Bands, NoiseTools can also recommend hearing protection based on your data.
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You can upgrade this instrument to a more advanced version of the Optimus Red or the Optimus Green at any time, future-proofing your investment.

Which Optimus Red is right for you?
There are 8 versions of the Optimus Red Sound Level Meters, 4 with Class 2 performance and 4 with Class 1 performance.
The table below shows the different versions and options available with each instrument.
You can also use our interactive Optimus Product Selector to find the best instrument for you.

Data Sheet & Product Information

Specifications - Technical Information

​Applicable Standards
IEC 61672-1:2002 Class 1 or Class 2 Group X
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 Octave Band Filters to IEC 61260 & ANSI S1.11-2004 (C & D variants)
Microphone
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 Octave Bands (31.5Hz to 16kHz, C & D variants)
Time Weightings
Fast, Slow & Impulse Measured Simultaneously
Display
High resolution OLED 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
Electromagnetic performance
IEC 61672-1:2002 & IEC 61672-2:2003
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)
Measurement Functions
CR:162A & CR:161A
Displayed Functions
LXY, LXYMax, LXYMin, LXeq, LCPeak, LZPeak, LCeq-LAeq, LXE
Graph of Short LAeq, LCPeak
Integrators 2 & 3: TWA, Dose%, Est Dose%v
Measurement Run Time
CR:162B & CR:161B
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%
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
CR:162C & CR:161C
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
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
Measurement Run Time
Time & Date of Measurement Start
CR:162D & CR:161D
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.