Larson Davis 831, User Manual

Page: 162 / 548

Model 831 Manual Acoustic Calibration 8-7
Environmental Parameter Ranges
For proper calibration of a Class 1 sound level meter such as
the Model 831, the calibration procedure and the correction
values apply over the ranges presented in Table 8-1.
Set the CAL200 level switch to 114 dB.
Adding a Calibrator
Refer to the calibrator certification
sheet for the calibration level When adding a calibrator to the list, the following
information may be entered:
• Calibration Level
• Calibration Frequency
• Calibrator Description
The calibration level and frequency values are as specified
in section ‘Model 831 with 1/2” Free-Field Microphone” on
page 8-6.
Looking at FIGURE 8-2, highlight each text box in the
Calibrator section of the
Calibrate tab and enter the correct
information about a calibrator, enter the information and
press
5
to complete the entry.
When the calibration level, calibration frequency and
calibrator description have been entered, highlight the
Save
button and press
5
to save the information to the list of
calibrators.
Parameter Range
Static Pressure 65 kPa to 108 kPa (9.4 psi to 15.7 psi)
Temperature - 10

C to + 50

C (14

F to + 122

F
Humidity 25 % to 90%, without condensation from - 10

C to + 39

(14

F to + 102.2

F)
Table 3-1 Environmental Parameter Ranges for Calibration