15-year
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Optimus+ Basic Sound Level Meter
Sound Level MetersThe Optimus+ Yellow is a basic sound level meter built to international standards (IEC 61672) and available as either Class 1 or Class 2 sound level meters.
- Measures all key noise parameters simultaneously to save time
- No complicated setup – just switch on, calibrate, and start measuring
- Available as a data logging sound level meter
- Choose from a Class 1 or Class 2 instrument
- Bluetooth connectivity with Smartphone App for remote start
Description
Optimus+ Yellow Sound Level Meter
A range of simple noise level meters for basic noise measurements
The Optimus+ Yellow is a range of basic sound level meters built to international standards (IEC 61672) and available as either Class 1 or Class 2 sound level meters. The range is the entry-point for Cirrus Research’s well-renowned Optimus+ range. The Optimus+ Yellow noise level meter is capable of measuring the maximum noise level during a session, and provides simple and easy-to-understand data, including frequency weightings and time history.
Most suited for applications where only basic noise level data is required, the Optimus+ Yellow can record the sound pressure level (SPL), maximum sound level (LMax) in decibels, which refers to the loudest recorded noise level during a period of data capturing, and on specific variants, allows for data logging of the sound levels measured over a user-defined period of time. This data will give you a basic understanding of the noise levels where you are measuring, and will allow you to identify any particular noise hotspots.
It has a bright and easy-to-read colour display allowing you to see the noise level in decibels (dB) in real-time on-screen, providing you with a clear and instant indication of the sound levels measured.
Remote Operation
Sometimes it’s not possible to hold the meter whilst taking measurements, this might be due to location, the noise level itself, or the length of time you want to measure for. The Optimus+ Yellow range includes Bluetooth connectivity to help solve this; with the addition of the dBActive smartphone app, you can easily operate your sound level meter from a short distance away.
VoiceTag | Audio Note Recording
Each of our data logging Optimus+ Sound Level Meters feature VoiceTag audio note recording, increasing the ease with which your NoiseTools database can be organised. Before each measurement, simply speak into the microphone to provide additional information such as the location of your reading. Once your measurement data is downloaded to NoiseTools, these audio notes are automatically converted into text.
Upgrade at anytime
The Class 1 variant of this meter has LNE Pattern Approval. See the Downloads tab for our certificate. Pattern Approval is a method where a test laboratory such as the LNE tests an instrument against a set of standard tests to ensure that it meets the performance claims of the manufacturer. Find out more here.
The Optimus+ Yellow Sound Level Meter Range
The Optimus+ Yellow is a basic sound level meter built to international standards (IEC 61672) and available as either Class 1 or Class 2 sound level meters.
The Optimus+ Yellow with Data Logging is a basic sound level meter with data logging built to international standards (IEC 61672) and available as either Class 1 or Class 2 sound level meters.
Basic Noise Assessments
Watch the product video to find out how the Optimus+ Sound Level Meter makes basic noise assessments easier than ever
The perfect entry-level sound meter for basic noise measurements
The Optimus+ Yellow Sound Level Meter provides simple and easy-to-understand data for applications where only basic noise level data is required.
We want to make your job easier, so we designed to Optimus+ Yellow to offer the highest level of performance without the complicated setup.
If you choose the data logging version of the Optimus+ Yellow, we’ll include our NoiseTools noise analysis software so you can keep a record of your measurements.
You can upgrade this instrument to an Optimus+ Red or Optimus+ Green at any time, future-proofing your investment.
Applicable Standards
IEC 61672-1:2013 Class 1 or Class 2
IEC 61672-1:2002 Class 1 or Class 2 Group X
IEC 60651:2001 Type 1 I or Type 2 I
ANSI S1.4 -1983 (R2006), ANSI S1.43 – 1997 (R2007)
ANSI S1.25:1991
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
Time Weightings
Fast, Slow & Impulse Measured Simultaneously
Display
High resolution display. Ambient light sensor & illuminated keypad
Memory
4GB (B Version), 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 Version)
Up to 30 seconds of audio notes with each measurement
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)
Displayed Functions
LXY, LXYMax, LXYMin
Measurement Run Time
Stored Functions
LXYMax & Time History of LXYMax
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.
Additional information
| Weight | 0.30 kg |
|---|---|
| Dimensions | 28.3 × 6.5 × 3.0 cm |
| Applications | |
| Basic Noise Level Testing | ✓ |
| Hardware Features | |
| Bluetooth | |
| Communication Interfaces | |
| Compatible Applications | |
| Memory | |
| Power Supply Options | |
| Average Operating Time | |
| Sound Measurement Features | |
| Applicable Standards | |
| Total Measurement Range | |
| Frequency Weightings | |
| Time Weightings | |
| Data Logging | |
| Minimum Data Logging Interval | |
| SPL | |
| VoiceTag Audio Notes | |
| Brand | Cirrus Research |
| Monitoring Duration | Short-term |
Optimus+ Yellow Sound Level Meters
User Manual
Optimus+ Yellow Sound Level Meters
Datasheet (English)
Optimus+ Yellow Sound Level Meters
Datasheet (Chinese)
