Madsen zodiac, Справочное руководство

Страница: 116 / 206

The manufacturer is to be considered responsible for effects on safety, reliability, and performance of the equipment only
if:
• All assembly operations, extensions, re-adjustments, modifications or repairs are carried out by the equipment man-
ufacturer or personnel authorized by the manufacturer.
• The electrical installation to which the equipment is connected complies with EN/IEC requirements.
• The equipment is used in accordance with the instructions for use.
The manufacturer reserves the right to disclaim all responsibility for the operating safety, reliability and performance of
equipment serviced or repaired by other parties.
On request, your supplier can obtain a Service Manual from the manufacturer.
17.3 Maintenance
MADSEN Zodiac requires no preventive maintenance. However, it is recommended that you observe the guidelines
described in
Cleaning MADSEN Zodiac ► 118 and Calibration ► 116 .
17.3.1 Calibration
Note
•
Calibration should always be performed in a low-noise environment.
The device and the probes are delivered fully calibrated.
• The device is calibrated from the factory in dB SPL or dB HL using the stated reference equivalent thresholds. dB HL
are related to sound pressure levels, dB SPL = dB re 20
µ
Pa.
• The probe calibration values are saved in the probe assembly and follows the probe. The probe can be plugged to any
MADSEN Zodiac and used right away. This also applies to the contra insert phone.
Probe check
The diagnostic probe and the Quick Check, if supplied, should be checked daily.
See
Probe check ► 36
.
Additional probe admittance checks can be performed. See the MADSEN Zodiac Reference Manual.
Note
•
If the test environment changes, for instance if there is an increase in humidity or if you are going to test
at a different altitude, make a probe check to verify that the system measures correctly.
Annual calibration
• The device and probe(s) must be calibrated once a year by your authorized service department.
• The Quick Check and diagnostic probes should be calibrated at least annually.
17.3.2 Probe admittance calibration
We recommend that you carry out this type of calibration at least once a year.
116 Otometrics - MADSEN Zodiac
17 Service and maintenance