Servomex DF-310E, Руководство оператора

Страница: 23 / 130

Options DF-310E 19
5 Options
5.1 Pump
The On-board Pump allows the analyzer to operate on gas sample streams
between 2.0 psig vacuum and 2.0 psig positive pressure.
If the analyzer has a pump, it will also have a downstream Flow Control
Valve mounted in the bottom of the flow meter. When using the pump, always
use this downstream valve to control the gas flow rate and leave all up stream
valves wide open.
.
If the pump is not in use, (positive pressure application) always control the gas
flow with an upstream valve or regulator and leave all down stream valves
wide open.
CAUTION
Do not use an upstream valve to control flow if the analyzer is
operating on a pump.
5.1.1 Pump Control
The on-board pump, if equipped, can be controlled from the Controls Menu.
See page 65 for additional information.
In addition the following options are available:
If factory configured, Servomex will supply the standard pump that the user
may install remotely and power through the PUMP -, + (+12VDC)
connections on the rear panel connector J4. Control would be accomplished in
the same manner as an internal pump.
OR
If factory configured, a switch closure rated at 1A/30VDC can be supplied
between the PUMP -, + connections on the rear panel connector J4. The
contacts can be used to send a signal indicating the status of the internal pump
or to control an external, Servomex supplied pump that is powered from a
separate source.
OR
If factory configured the pump may be controlled remotely through the EXT
signal on the J6 connector. See the section on Remote Controls on page 48 for
additional information.
5.2 Battery Power
Analyzers equipped with a battery pack (AC powered units only) can be
operated on battery power for four to eight hours, depending upon