BUSCH VacTest, Instruction Manual, Page: 19 / 24

Technical Data | 10
Instruction Manual VACTEST DCC 400_EN_en 19 / 24
10 Technical Data
VacTest DCC 400
Measurement principle Inverted magnetron
Materials exposed to vacuum Stainless steel 1.4307, nickel, tungsten, molybdenum, glass,
ceramic
Measuring range mbar 2 x 10
-3
… 5 x 10
-9
torr 1.5 x 10
-3
… 3.75 x 10
-9
Overpressure limit bar abs. 10
Measurement uncertainty % of reading 2 x 10
-3
… 1 x 10
-8
mbar:
±
25 %
Repeatability of measurement % of reading 2 x10
-3
… 1 x 10
-8
mbar:
±
5 %
Leakage rate mbar l/s < 5 x 10
-10
Reaction time ms < 50
Serial Interface RS485
Electrical Connection D-Sub, 15-pin, male
Supply voltage V 20 … 30
Cathode voltage V 2.5
Max. power consumption W normal operation ► 3
W relays/display ► 0.8
Output signal 0 … 10 V, RS485
Output function V log(p
mbar
) + 10.5
Under-range voltage V 0.9
Error V 0.4
Setpoint relay 2 dry contacts
Relay contact rating 2A, 50 VAC / 2 A, 30 VDC, max. 60 VA
Operating Temperature °C +5 ... +60
Storage Temperature °C -40 ... +65
Max. bake-out temperature at the
flange °C 160
Relative Humidity: max. 80% up to 30°C, max. 50% at 40°C, not condensing
Ambient pressure: hPa (mbar) 860 … 1060
Protection Class IP 40 (IP 54 with appropriate D-Sub connector)
Weight g 555