DH Instruments MFC-CB, Руководство по эксплуатации и обслуживанию

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3. OPERATION
Page 27
©2001~2007 DH Instruments, a Fluke Company
3.2.7 [DRIVERS] (OPTIONAL)
 PURPOSE
To control the output signals of MFC-CB’s eight (8), 12 V external drivers.
 PRINCIPLE
MFC-CB external drivers are available to drive peripheral equipment, for example
solenoid valves, in a system that includes MFC-CB. The driver electrical connections are
available from a rear panel connector.
See Section 7.3 for driver specifications and pin outs.
 OPERATION
To access the driver control function press [SETUP] and select <4drivers> .
The display is:
Pressing the keypad numerical key driver number turns that driver ON and OFF with
either a momentary or a toggled response (see next paragraph). An active driver is
indicated by
<*> immediately following the driver number.
Pressing [ENTER] while in the <External drivers> menu causes a menu to appear that
allows selection of whether the driver actuation will be <1momentary> or <2toggle> .
3.2.8
[SET MFC]

PURPOSE
To enter a set point value for MFC-CB to output on the active device channel (DEV1 or DEV2).
 PRINCIPLE
MFC-CB outputs and reads electrical signals on its two device channels, DEV1
and DEV2. The value to output (the MFC set point) can be specified remotely or by front
panel entry using
[SET MFC] .
The set points unit of measure is determined by the unit selected using [UNIT] (see
Section 3.2.2). When set point entry is in a flow unit, the flow unit is converted to an
electrical value using the electrical and flow range information in the active MFC profile.
The conversion of a flow value to an electrical value is by a simple linear relationship
between the flow range and the electrical range (see Section 7.1.2).
Set point and measured values can be affected by the K factor setting (see Section 3.2.1)
and/or the use of the adjustment function (see Section 3.3.5).
In addition to using [SET MFC] , the set point value can also be adjusted incrementally
from the run screen using the jog function (see Section 3.2.9).
External drivers: 1
2 3 4 5 6 7 8