Further Information On The Gas Connection - Siemens SIPROCESS GA700 Compact Operating Instructions

Connecting
5.1 Gas connections
Procedure
1. Unscrew the union nuts of the cable glands
outlets
counter properly.
2. Unscrew the union nuts of the cable glands
screw the bent pipe extensions
3. Place the IR source cover
extensions
cover
4. Connect the heated sample gas and reference gas lines
and outlets using suitable cable glands
5. Check whether the glands are connected firmly and check the pipe connections for leaks.
6. Place the IR source cover
with two screws
7. Place the case
one another.
8. Guide the slider
case
the case
5.1.7

Further information on the gas connection

It is essential that you observe the following points for trouble-free operation:
● When tightening the union nuts at the gas couplings, ensure that you counter properly in
order to achieve a tight gas path.
● When removing purging gas ensure that the pressure drop via the exhaust air line does
not result in the following components switching off:
- Ex p safety equipment during the pre-purging phase
To achieve this, the exhaust air line must be dimensioned accordingly (for example with
an inner diameter of G 1", the length of the exhaust air line may be about 20 m).
● Always adhere to the pre-purging time that can be set at the Ex p safety equipment!
The pre-purging time amounts to 10 minutes at a purging gas flow rate of 60 l/min.
● Do not supply sample gas to the analyzer until the pre-purging phase has ended.
● OXYMAT 7: Before sample gas is supplied, the microflow sensor must be reliably flushed
by reference gas.
The reference gas must therefore also be connected (pre-purging period = 10 min) when
the Ex p safety equipment is switched on.
Note that the reference gas pressure must always be 2 bar ± 0.1 bar above the sample
gas pressure.
46
③
. When tightening the union nuts at the gas connecting fittings, ensure that you
①
fit correctly in the grooves of the IR source cover
⑩
with three screws
⑤
. The torque is 2.5 Nm.
⑧
behind and the case
⑦
between the two rows of gas lines
⑧
and push it into the IR source as far as it will go along the guidance grooves of
⑧
.
- Analyzer during the operating phase
②
and screw them into the gas inlets and
②
at the free ends of the gas outlets and
①
onto the gas outlets.
⑩
over the pipe extensions
⑪
. The torque is 2.5 Nm.
② ⑨
and
④
above the cable glands
⑥
in front of the IR source and insert them into
Compact Operating Instructions, 11/2019, A5E35134047-04
①
. Make sure that the pipe
⑩
. Secure the IR source
⑫
with the associated gas inlets
.
②
. Secure the IR source cover
⑫
. Place the slider
Devices in explosion-proof design
④
⑦
onto the