Chapter 4
Page no. 324
Chap-Pre-Requirements.fm
GE Healthcare
Senographe DS
Revision 1
Service Information and Procedures Class A 2385072-16-8EN
Pre-Installation System Requirements
1.
ENVIRONMENTAL REQUIREMENTS
1-1. Atmospheric Pressure Limits (Storage and Operational)
*
- During transportation a pressurized environment must be used to maintain the atmospheric
pressure limits.
1-2. Preventing Thermal Shock to the Detector
To prevent thermal shock to the detector, the ambient tempertaure gradient must not exceed the values
as specified below.
1-3. Storage Requirements - temperature and humidity
1-3-1.
General requirements
-
The system includes a detector assembly in its casing, which is sensitive to changes in tempera-
ture and humidity, and is water-cooled when in use.
-
The specified storage requirements assume that the all the equipment remains in its packaging,
including the protection for the detector.
1-3-2.
Before installation - short term
For short-term storage (less than 5 days), refer to the storage requirements table below.
1-3-3.
Before installation - long term
For long-term storage (more than 5 days), it is recommended that the detector assembly is kept in an
area with relatively dry and low temperature, or area with air conditioning. For example, relative humidity
less than 50%.
Atmospheric pressure
(operation, storage and transportation*)
Altitude (from sea level)
Min.
Max.
Min.
Max.
700 hPa
1060 hPa
0 m
3000 m
0 ft
9840 ft
Temperature range
Less than 0°C
0°C to 40°C
Greater than 40°C
Less than 32°F
32° to 104°F
Greater than 104°F
Ambient temperature
gradient must not
exceed
4.5°C per hour
1.5°C per minute
4.5°C per hour
40.1°F per hour
34.7°F per minute
40.1°F per hour
Relative humidity
(non-condensing)
Temperature
Min.
Max.
Min.
Max.
5%
95%
–20°C
50°C
–4ºF
122ºF