Model 60 Series Application Overview
Application Details and FAQ’s

Model 60 Series Application Overview

The 60 series are Data Logging Sound Level Meters, available as both Type 1 and Type 2 units that can provide intricate results whilst still being user friendly. Their operation is very simple with one button one function operation; that is you simply press one of the 16 buttons for the most common functions. They have both linear and exponential integration incorporated.

The 60 series range also contains an advanced Personal Noise Dosemeter that is an invaluable tool for ensuring an employee hearing is protected and therefore preventing expensive compensation claims. Like all Pulsar instruments, they come with cables and software – ready to go.

All units in the 60 series range can be operated manually as a conventional hand held meter or by remote control. They can also start and stop automatically and generally do almost anything a sophisticated user can desire.

Usage

The variants of the 60 series are shown in the table below.

Two headings above, “EVENTS” and “SHORT Leq” may be new concepts and are described below:

‘EVENTS’ are individual sets of measurements, each of which may contain many different parameters, such as S-time-weighted sound level, Leq, L10, Peak, LAmax, SEL etc. etc. These are FORMATTED data sets in that you simply press START and when you have the data, STOP. The 60 series then produces ALL the measurements you have pre-selected. These can be read on the display or printed directly or transferred to a computer to include in reports. A typical report is shown in figure 60.1. This report can be produced in any one of THREE WAYS.

1. By connecting the model 60 DIRECT to an RS232 printer and pressing PRINT on the model 60
2. By using any normal terminal program on a PC to download the data into the pc memory
3. By using the software supplied which also produces the graph in figure 60.2.

Short Leq on the other hand is RAW DATA. This is only used with a computer that can then reproduce ANY metric you want AFTER the measurement has finished. In other words, you do not need to decide what you need until AFTER you have acquired the data. Figure 60.2 is typical of the sort of data you get. 100,000 of 1second Leq values which gives a total time of 27 hours acquisition, while 10,000 at 5 seconds gives 13 hours recording. The data period can be from 1/16th second to 16 seconds. Short Leq, initially described by Luquet and Kommorn and subsequently developed by Krug, Wallis and Holding is one of the truly new ideas in acoustics and is one of the most powerful techniques available.

Application Details and FAQ’s

A typical set of event data, tabular in format – from a model 63 – follows.

It must be stressed that the format of this printout is TOTALLY under the control of the user. With the supplied software 60SETUP, almost any parameter can be changed; any of over 100 metrics that the model computes, can be in the printout.

Some potential users, in the early days did not buy model 60 because of the almost unPlc possibilities it offers and they assumed it would therefore be difficult to use. IT IS NOT!!!

Pulsar Instruments Plc.       Model 63      Serial  021388
      
Baud            9600           Calibration Due  24/12/2002
Range           30.0-143.2     Weighting  A
Time Integrator     2.00 sec   # Events    4

Run Stop 90.0 Thresh. Overload
Time 01:05 00:17 00:06 00:00 hr:min:sec

Peak Max Min Cal 1 Offset 1 Cal 2
Level 119.4 94.1 43.0 94.0 + .2 0 dB
Time 11:00 11:00 11:00 11:00 00:00 hr:min

Total Start Run Time Leq SEL LEPd L 10 L 90 Peak Max Min 

3dB 10:59 01:05 84.5 102.5 58.1 93.2 56.1 119.4 94.1 43.0 
         
Event Start Run Time Leq SEL LEPd L 10 L 90 Peak Max Min 

1 3dB 11:00 00:10 92.2 102.5 58.0 94.0 58.5 119.4 94.1 55.7 
2 3dB 11:00 00:08 73.2 82.6 38.1 78.9 55.1 86.2 82.6 55.1 
3 3dB 11:00 00:14 67.7 79.3 34.8 64.4 57.8 104.2 86.2 57.8 
4 3dB 11:00 00:31 60.9 75.8 31.3 61.1 59.0 85.0 68.7 58.7 

Just four events are shown in fig 60.1, but model 63 can store and print 2,500 of these events, many more than most people ever need. Think of each event as a totally separate measurement. For example, you go to a measuring position and press START. When you have your data press STOP and an event has been recorded. Go to another position and do it again – up to 2,500 times and it is ALL stored. The events above range from a RUN TIME of 8 seconds to 31 seconds, but each one can be up to 24 HOURS if you wish. From the stored Short Leq, you can produce almost ANY data including the Time History of the noise as the figure below. The graph in Figure 60.2 is a simple plot of the stored data and from this many parameters can be measured – long after the event has passed.

For example, from this data taken in July 1999, a company could review any or all of its noise data for the new 2004 proposed regulations, it is just possible that no further actual measurement may be needed.

The graph is part of a long file of data and the software can ‘cut up’ the data in this way to concentrate on one part of a long file if needed. The software 60SETUP provided with the instrument, allows you to re-configure the keypad and gives control over ALL aspects of the instruments as well as doing the data transfer and display for you.
The software can display the reading on the instrument, as below.

60Setup Main Screen

The panel on the right shows the actual keys on the instrument and any can be changed to one of over 100 metrics.

Special features and functions

If a high technology solution to measuring noise is wanted, the 60 series is exceptional, as it has the ability to be configured in ANY way the user wants. Set up as an Health & Safety meter, it can survey a factory and give the data printouts faster than ANY other instrument except model 22. In the dosimeter role, the EXACT exposure for each worker, second by second can be plotted, easily and quickly.

There are over 120 functions available on the 60 series, all of which can be called up by the user and added to the data printout and most can also be allocated to a single key. This makes YOUR special metric “ONE KEY - ONE FUNCTION”.

There are MANY, MANY features on the 60 series that are not obvious, such as user-configurable keyboard and storage as well as the ability to operate in the 4dB and 5dB doubling systems as well as the World standard of 3 dB or “equal energy” doubling. However, for most users, these features are not important and they can simply be ignored as they do not add to the complexity of normal operation.

If you, the potential user, have an unusual requirement, call Pulsar, the 60 series may well be able to do what you need by a simple re-configuration from the software supplied free with each unit.

In one sense, the 60 series shows the futility of the ‘dosemeter’ versus ‘sound level meter’ argument, as the only difference between them in the 60 series, is the case style: otherwise they are identical.

• Return to sound level meters model 63 page
• Return to model 66 & 67 dosemeter page