Environmental inspection of the Transceiver Unit
Satisfactory environmental conditions are important to ensure long and trouble-free operation of the Transceiver Unit. An environmental inspection of the Transceiver Unit is required to verify the quality of the sonar room.
Prerequisites
The CS90 is installed as specified in this manual. You need the following equipment:
•  Thermometer
•  Hygrometer
Context
The sonar room is the compartment in which the Transceiver Unit is installed.
Procedure
1 Make sure that the compartment ("sonar room") in which the Transceiver Unit is installed is clean and dry.
2 Make sure that the ambient temperature in the sonar room meets the environmental specifications.
a Make sure that the temperature in the sonar room is controlled using a suitable ventilation system.
b Record the type of ventilation system that is installed.
c Make sure that the temperature in the sonar room is monitored.
d Measure the ambient temperature in the sonar room when the CS90 is switched off.
e Record the value in the result table.
3 Make sure that the relative humidity in the sonar room meets the environmental specifications.
a Measure the relative humidity in the sonar room.
b Record the value in the result table.
4 30 minutes after the CS90 has been switched on and put to normal operation, measure the ambient temperature one more time.
Record the value in the result table.
5 30 minutes after the CS90 has been switched on and put to normal operation, measure the relative humidity one more time.
Record the value in the result table.
6 Make sure that the sonar room, the CS90 Transceiver Unit and the mounting brackets have not bee subjected to corrosive attacks.
Result
  CS90 turned off CS90 turned on
Ambient temperature:  

 
Relative humidity:  

 
Requirements Results
The compartment in which the Transceiver Unit is installed ("sonar room") is clean and dry.  
A ventilation system is installed.  
Record the type of ventilation system that is installed.


There are no corrosive attacks.  
Date and signature: