GAS 222.20
4.5.2 Connecting the calibrating gas line (optional)
Connecting the calibrating gas line requires a Ø6 mm or Ø1/4”
pipe fitting.
If the calibrating gas connection was ordered with check
valve, a Ø6 mm or Ø1/4” pipe can be connected directly to the
check valve.
4.6 Electrical connections
WARNING
Hazardous electrical voltage
The device must be installed by trained staff only.
CAUTION
Wrong mains voltage
Wrong mains voltage may damage the device.
Regard the correct mains voltage as given on the type plate.
Electric strength test
The necessary tests of all assemblies required to be tested
were carried out at the factory (test voltage 1 kV or 1.5 kV de-
pending on component).
To check the electric strength again yourself, only do so on the
respective individual components.
• Now perform the electric strength test against earth.
4.6.1 Connection via Terminal Strip
The probe has regulated, adjustable heating. The supply
voltage is 115 V AC, 50/60Hz or 230 V AC, 50/60 Hz (see type
plate).
The device is already wired to the controller.
Inside the controller housing is a terminal block for connect-
ing the mains supply and the alarm output. The connection to
the included terminal blocks is shown in the attached connec-
tion diagram. For this purpose the plugs can be removed from
their sockets and reinserted once wired. The pin assignment is
also printed onto the board.
If the heat dissipation is very high near the probe due to the
application, the customer must install a shield to protect the
probe and regulator.
4.6.2 Heated Extension (Optional)
The unit can optionally be ordered with heated extension.
Heated via regulated heating tape with Pt100, preventing fall-
ing below the sample gas dew point at the sample point. The
unit cannot be retrofit with a heated extension.
The connection cable for the heated extension (mains connec-
tion 115 or 230 V AC) must be connected per the enclosed con-
nection diagram.
5 Operation and Control
NOTICE
The device must not be operated beyond its specifications.
5.1 Basic function of the probe controller
5.1.1 Regulator Functions
After switching on the combination the probe is heated up.
The display with the current temperature will light up on the
controller. As long as the set operating range is has not yet
been reached, the display will flash and the status contact is
in Alarm position. Once the working range has been reached,
the status contact switches and the display is steady.
The target temperature, the working range of the probe and
the temperature unit (°C/°F) are set using the three control
buttons on the controller. This is described in chapter “Opera-
tion and use”.
The factory settings are: Unit: °C; target temperature: 180 °C;
working range: ±10 °C
5.1.2 Advanced Functions with Built-In Regulator for
Heated Extension (Optional)
The display will alternating between "Prob"– adapter temper-
ature – "AdOn"– extension temperature.
5.2 Use of menu functions
Overview of the operational principal:
Use this short description if you have experience with the
device.
Operation is carried out by only the keys with the following
functions:
Key
Function
• Switch from measurement display to main
menu
• Selection of the display menu item
• Accepting the changed value or selection
• Switch to the upper menu item
• Increase of the value of switching the selection
• Temporary display of the alternative measure-
ment display (if option is installed)
• Switch to lower menu item
• Decrease of the value of switching the selection
• Temporary display of the alternative measure-
ment display (if option is installed)
10
Bühler Technologies GmbH
BX460040 ◦ 10/2019
