Measure; Measure Low Sound Levels; Overload And Underrange; Calibrated Measurement - SINUS Tango Plus Manual

2.5 Measure

For legally binding measurements the device must run on batteries/rechargeables. Therefore the device
has to be controlled with the keypad (section 1.4.1). Follow the instructions below to perform a binding
measurement:
1. Position the device (held in the hand or mounted upon a tripod).
2. Switch on the device.
3. Check the battery charge status.
4. Use the Record-Button to enable/disable data recording.
5. Press the Start-Button to start the measurement.
6. Press the Stop-Button to stop the measurement.

2.5.1 Measure low sound levels

You do not have to make special preparations for measuring low level sounds.

2.5.2 Overload and Underrange

The indicator for overload and underrange is located on the right or left respectively of the bar graph on the
display. They are displayed, when the linearity range is left.
NOTICE!
The representation on the display is explained in the following table 2.4.
Tango-Utilities Display Description
No overload has occured in current measurement.
Overload has occured in current measurement.
Currently an overload occurs.
No underrange has occured in current measurement.
Underrange has occured in current measurement.
Currently an underrange occurs.
Table 2.4: Display of overload and underrange

2.5.3 Calibrated Measurement

The calibration control procedure ensures that it is clear for the measurements taken, whether the instrument
is in the calibrated state or not. For Tango_Plus a measurement is considered as calibrated, if the device
has been successfully calibrated between switch on (deletes the calibration status) and the start of the
measurement. The following information is collected:
Date and time of calibration
Sensitivity
Deviation from previous calibration (checked during calibration but not saved)
SINUS Messtechnik GmbH
2.5 Measure
A reset of the overload or underrange display is only possible by stopping
and restarting the measurement.
23 of 47 Manual Tango_Plus