BUSCH VacTest, Instruction Manual, Page: 4 / 24

2 | Product Description
4 / 24 Instruction Manual VACTEST DCC 400_EN_en
2 Product Description
The digital transmitter DCC 400 is an inverted magnetron sensor whose measurement
principle is based on the ionization probability of gases.
This sensor type provides indirect pressure measurements which are dependent on the
gas nature.
The DCC 400 D is the same gauge but equipped with a LCD display.
2.1 Interface Illustration
1
3
5
7
9
11
13
15
RS485 Stat Adj SP1 SP2
RS485 / 0-10V / Relay
1 8
15 9
Address selector
switch
Status-LED
Pushbutton
Setpoint LEDs
2.2 Product Identification
The product model can be found on the product's nameplate. Technical modifications
are reserved without prior notification.
2.3 Delivery Content
Included in the delivery consignment are:
– Digital transmitter DCC 400
– Protective cover
– Instruction manual
Available accessories, consult the chapter
Spare Parts and Accessories [ ► 18]
.
2.4 Proper Use
The DCC 400 serves exclusively to measure total pressure in a range of:
– 2 x 10
-3
… 5 x 10
-9
mbar.
2.5 Improper Use
The use for purposes not mentioned above is regarded as improper, especially:
– Connection to pumps or units which are not suitable for this purpose according
to their operating instructions.
– Connection to units which have exposed voltage-carrying parts.
– Operation of the devices in areas with ionizing radiation.
No liability or warranty will be accepted for claims arising from improper use.