Planer BT37-02, Инструкция по эксплуатации

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Operation
Important
After changing any parameters, use the main display to check the setpoints are
correct. From the main screen you can keep pressing
Display until the setpoints are
displayed.
3.2.1
Gas flow
The gas flow to the chamber can be in one of four states: off, bleed flow, purge flow,
extended purge.
The gas flow is only off when in standby or bottle change mode.
Bleed flow is the default flow condition and provides the background gas flow required
to maintain the gas concentration in the chambers. Bleed flow provides gas at a low
background rate but can operate in two modes:
non-pulsed and pulsed .
Purge flow provides gas at a higher rate, factory set to 360 mL/min, for a length of time
defined by the
Purge duration s setting. The default duration is 180 seconds. Purge
flow only occurs when both lids are shut and starts when the lids are closed. The flow
then returns to bleed flow.
Extended purge flow provides gas at the same flow as the normal purge flow but for an
extended duration defined by the
Extended purge duration s setting. The default
duration is 540 seconds. Extended purge flow only occurs when both lids are shut and
starts when the user exits standby or bottle change mode. The flow then returns to
bleed flow.
3.2.1.1 Non-pulsed bleed flow
In non-pulsed mode, gas is provided at a steady rate defined by the Non-pulsed flow
mL/min setting. This is the default and recommended mode.
3.2.1.2 Pulsed bleed flow
In pulsed mode, the flow alternates between a low and high bleed flow rate. This requires
the
Bleed off time s setting to be set to a non-zero value, otherwise non-pulsed flow will
be provided. In pulsed mode the flow is held at a low bleed rate for a duration defined by
the
Bleed off time s and then at a high bleed rate for the Bleed on time s duration.
The low bleed rate is factory set to 20 mL/min and the high bleed rate to 60 mL/min.
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