Updated Type Approval for the Cirrus Optimus Green Sound Level Meters

PTB Type Approval for the CR:171C optimus green sound level meter We’re delighted to announce that the CR:171C Optimus Green Sound Level Meter has been granted Type Approval by the PTB in Germany.

In addition to these, we’ve recently received Type Approval to UNE-EN 61672 in Spain for the CR:161A, C:161B, CR:161C, CR:1710, CR:171A and CR:171B instruments.

We’re also pleased to announce that the CR:161 series (CR:161A, CR:161B, CR:161C & CR:161D) now carry Type Approval in Serbia.

The CR:171C is currently the top of the optimus green range and includes all of the features of the other members of the optimus range as well as a set of new functions, including the ability to trigger audio recordings not just from level exceedences but from tonal noise and the rate of change of the noise.

This new approval adds to the existing PTB Type Approval for the Class 1 Optimus Sound Level Meters.

The following instruments now carry PTB Type Approval to IEC 61672 (DIN EN 61672):

CR:161A Class 1 Integrating Sound Level Meter
CR:161B Class 1 Data Logging Integrating Sound Level Meter
CR:161C Class 1 Data Logging Integrating Sound Level MeterÂ with 1:1 Octave Band Filters
CR:1710 Class 1 Data Logging Environmental Sound Level Meter with Acoustic Fingerprint triggering
CR:171A Class 1 Data Logging Environmental Sound Level Meter with Acoustic Fingerprint triggering & 1:1 Octave Band Filters
CR:171B Class 1 Data Logging Environmental Sound Level Meter with Acoustic Fingerprint triggering with 1:1 & 1:3 Octave Band Filters
CR:171C Class 1 Data Logging Environmental Sound Level Meter with Acoustic Fingerprint triggering, 1:1 & 1:3 Octave Band Filters, Extended Ln measurement and Tonal Noise Detection.

Find out more about the optimus green sound level meters.

All of the optimus sound level meters feature the unique AuditStore data verification system and the optimus green instruments (CR:170 Series) add the Acoustic Fingerprint triggering system which allows the sound level meters to start and stop audio recordings based on a range of noise parameter, not just the overall noise level.

This feature is very powerful and places the optimus green sound level meters at the forefront of noise measurement technology.

What is Type or Pattern Approval?

AuditStore Data Verification

PTB Type Approval for the Optimus Sound Level Meters

Tonal Noise Detection with the optimus green sound level meters