PBI-220047-F 01/2008
COPYRIGHT ©
PBI-Dansensor A/S
4. Operation
MAP Check 9000 - User Manual
20
value.
If the measured O
2
value is lower than the
lo.o2
value, the proportional valve is closed
until the measured O
2
value is above or equal to the
lo.o2
value. As long as the measured
O
2
value is within the two limits, there will be no upwards/downwards regulation of the
flow.
lo.o2
cannot be entered at a value higher than the
hi.o2
value.
•
reg.h/reg.l
: Max./min regulation value
Enter as
lo/Hi.xx
.
Using these two values it is possible to determine an absolute limit for how much the flow
may be regulated up or down.
•
g.up/g.dn
: Gain when regulating the flow up/down.
Speed with which the flow is turned up/down when the measured O
2
value is outside the
defined regulation window.
g.up
and
g.dn
is entered as O
2
values in the range 0.00ppm to 99.99% O
2
where 1ppm
corresponds to a gain factor of 1. These two values have nothing to do with O
2
, but in order
to extend the value range they are entered as 0
2
values, which allows the gain to be
entered as a factor in the range 0.01 to 999900.0 (0.01ppm - 99.99 %)
The reason why there is both an up factor and a down factor is that there is typically a
desire to rapidly turn up the flow when the oxygen level is too high in the measuring area.
•
g.d
: Degree of differentiation
The degree with which the turning up/turning down of the flow is reduced when rapid
changes occur in the measured O
2
value. g.d is entered as O
2
values in the range 0.00
ppm to 99.99% O
2
. If g.d is set to 0 the differentiation has no effect.
4.13. MAP Check 9000 measuring methods
Pump control
This parameter is determined by digit No. 4 in the
PA.1
parameter in the setup menu. "Key
alone (manual pump control)", "Key and external pump control", or "External pump control
alone" can be selected.
No.
1)
Key
Online
Online
Online
Stop, clear display
Stop, clear display
Stop, clear display
2)
Key +
external
3)
External
Measuring sequence
k
k
= Key
ex
ex
on
off
=
External measuring signal on
=
External measuring signal off
k/ex
on
ex
on
k/ex
off
ex
off
k
Pump
control
