INFICON BCG450 ATM to Ultra-High Vacuum Triple Gauge - Manual (Page 11)

tina40e1-b (2011-04)
11
Fieldbus name Profibus
Standard applied → [7]
Communication protocol data format → [9], [7]
Interface, physical RS485
Data rate ≤12 MBaud ( → [2])
Node address
Local
(Adjustable via hexadecimal
"ADDRESS", "MSD", "LSD"
switches)
Default setting
Via Profibus
(hexadecimal "ADDRESS" switches
set to >7d
hex
(>125
dec
))
00 … 7D
hex
(0 … 125
dec
)
5C
hex
00 … 7D
hex
(0 … 125
dec
)
Profibus connection D-Sub, 9-pin, female
Cable Shielded, special Profibus cable
(
→ 22 and [5])
Cable length, system wiring According to Profibus specifications
(
→ [7], [5])
Materials exposed to vacuum
Housing, supports, screens
Feedthroughs
Insulator
Cathode
Cathode holder
Pirani element
Sensor diaphragm
Sensor contacts
stainless steel
NiFe, nickel plated
glass
iridium, yttrium oxide (Y
2
O
3
)
molybdenum
tungsten, copper
ceramic (Al
2
O
3
)
SnAg
Internal volume
DN 25 ISO-KF
DN 40 CF-R
≈24 cm
3
≈34 cm 3
Pressure max. 5 bar (absolute)
Admissible temperatures
Storage
Operation
Bakeout -20 … 70 °C
0 … 50 °C
+150 °C (at vacuum connection, without
electronics unit, horizontally mounted
Relative humidity
(year's mean / during 60 days)
≤65 / 85% (no condensation)
Use indoors only
altitude up to 2000 m NN
Mounting orientation any
Degree of protection IP 30
Profibus interface
(BCG450-SP)
Materials used
Ambiance