Metrohm 709 IC Pump - Manual (Page 32)

3 Operation
709 IC Pump
24
P
max
Maximum shutoff pressure for automatic
shutdown of the pump drive
Range: 0.1...50 MPa (1...500 bar)
(P
max
> P
min
)
P
actual
Current pressure
NX Correction factor for flow rate (see
section 3.2). The <SELECT> key must
be pressed for ca. 3 s.
Range: 0.90 ... 1.10
Input key for continuous lowering of the value selec-
ted with the <SELECT> key. When the key is
released the current value is stored.
Pressing this key briefly changes the displayed value
by one digit, if the key is pressed longer the value is
changed continuously and increasingly faster.
Input key for continuous raising of the value selected
with the <SELECT> key. When the key is released
the current value is stored.
Pressing this key briefly changes the displayed value
by one digit, if the key is pressed longer the value is
changed continuously and increasingly faster.
EXT.
On/off switching of the external control of the pump
via RS232 or current loop interface.
PURGE
On/off switching of the maximum delivery rate
(5 mL/min) to purge the pump.
This key is active only in the standby mode.