Chapter 3. System Specifications and Requirements
EQ-99X Operation & Maintenance Manual
17
of
45
Digital Outputs
User Power
3.4 Utility Requirements
3.5 Environmental Requirements
Operating
Transport
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Type
: Open collector to ground (digital common)
•
Logic
: Active Low
•
Voltage
: 30VDC max.
•
Sink Current
: 30mA max.
•
Voltage
: 5VDC, referenced to digital common
•
Current
: 50mA maximum
•
Electrical
: 12VDC at 11.7A minimum (140W rating). Power consumption is approximately 100W during normal
operation.
•
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Purge Gas
: Optional (strongly recommended). Clean dry nitrogen, filtered to 5 um 20 psig (0.14 MPa) supply
pressure.
With no purge, ozone will form from atmospheric oxygen and attenuate the light output in the 220 – 280
nm band. This will reduce the lamp bulb's overall lifetime. In addition, atmospheric oxygen and water
vapor will attenuate the output below 200 nm.
Clean and dry nitrogen from either a dewar or research-grade N2 bottle is recommended. Do not use
any other purge gas.
Grade 4.8 or better gas purity is recommended to maintain cleanliness of the optics.
With a 20 psig inlet pressure, the EQ-99X system will consume approximately 1 slm of flow.
There is no return fitting for the purge nitrogen. The purge flow normally escapes within the lamp head
enclosure, and then to the atmosphere.
•
Ambient Temperature
: 15–35 °C
•
Relative Humidity
: Non-condensing, 80% max. for temperatures up to 31 °C, decreasing linearly to 50% max. at
40 °C.
•
Pollution Degree
: Pollution Degree 2 (normally only non-conductive pollution; occasional, temporary
condensation possible).
•
Installation Category
: Installation Category II.
•
Indoor/Outdoor Use
: Indoor use only.
•
Temperature
: -5–95 °C
•
Relative Humidity
: non-condensing, 95% max.
