The Optimus+ CR152B is an easy to use sound level meter
with Class 2 performance, ideal for where you need to measure
Sound Level (SPL) or Lmax. It has been designed to meet the
very latest standards for noise measurement instruments and
provides the highest level of performance possible whilst being
simple to set up, use and operate. This meter also measures low
enough to meet the requirements of BB93.
Can be used for simple noise level testing, noise ordinance
enforcement, community noise assessment, fire & emergency alarm
testing and machinery servicing & maintenance.
Basic noise measurements made easy
This Optimus+ Industrial Sound 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, these models 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.
Occupational noise level measurement made simple
This Optimus+ Industrial Sound Level Meter with Leq Values makes
noise level measurements incredibly easy and straightforward,
saving you time while capturing all essential noise level data
simultaneously. This instrument captures sound pressure level
(SPL), time weighted and frequency weighted values at the press of
a single button.By measuring every parameter simultaneously, you
can be sure that your occupational noise survey will be
comprehensive and robust, providing the level of detail required
for making better-informed decisions and reporting to key
stakeholders within your organisation.
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+
Industrial sound level meter 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
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.
Pattern Approval
The Optimus+ Industrial Sound Level Meter with Leq Values and
with Octave Bands both have LNE Pattern Approval. 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.
Batteries 4 x AA batteries (supplied)
Battery life is typically 12 hours with Alkaline batteries and
20 hours with Lithium Non-Rechargeable batteries. Note: Battery
life is dependent upon the battery type, quality and screen
brightness.
Applicable standards*1
IEC 61672-1:2013 Class 1 or Class 2*1
IEC 61672-1:2002 Class 1 or Class 2 Group X*1
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
IEC 61260:1996 & ANSI S1.11-2004
DIN 45657:2005-03
Microphone
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: <21dB(A) Class 2
Frequency weightings
RMS & peak: A, C, & Z measured simultaneously
Frequency bands: 10 octave bands (31.5Hz to 16kHz)
Time weightings
Fast, Slow & Impulse measured simultaneously
Display
High resolution display. Ambient light sensor and illuminated
keypad
Memory
8GB, 32GB factory-fit option
AuditStore
Measurement verification data stored in secure memory
Time history data rates (global settings)
10ms, 62.5ms, 100ms, 125ms, 250ms, 1/2 sec, 1 sec, 2 sec
(user
selectable)
VoiceTag audio recording
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 and 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
High impact ABS-PC and soft touch back and
keypadEnvironmental
Operating temperature -10°C to +50°C
Storage temperature -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, Italian. Other language
options may be available
Software support
NoiseTools analysis software supplied as standard. Compatible
with Microsoft Windows 7, 8 & 10 (32bit & 64bit)
Bluetooth
BLE compatible with Anrdoid and iOS devices
Cirrus mobile applications available from Google Play and the
App Store.
All specifications, features and values are typical and are
subject to change without notice.
Measurement functions
CR:152B & CR:151B
Displayed functions
LXY, LXYMax, LXYMin
Measurement run time
Stored functions
LXYMax & time history of LXYMax
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 or Z y= F,
S or I
Other functions may calculated by the NoiseTools software and
displayed on download.
Notes
Please refer to the optimus user manual for full
specifications.
All specifications, features and values are typical and are
subject to change without notice.
