Configuring And Calibrating The Analog Outputs - Panametrics Sentinel User Manual

Chapter 3. Operation
3.6

Configuring and Calibrating the Analog Outputs

Every Sentinel flow meter includes two built-in analog outputs (A and B) at terminal block J1. Before beginning
calibration of these outputs, an ammeter must be connected to the desired analog output. Both the zero-point and
the full-scale values for all of these outputs must be calibrated. After calibrating the outputs, which have a resolution
of
5.0 uA (0.03% of full scale), their linearity should be tested.
Note: The zero point of the analog output may be set to either 0 mA or 4 mA. However, the calibration always uses
the 4 mA point, and the meter extrapolates this value to obtain the 0 mA point.
3.6.1 Configuring the Analog Outputs
CAUTION!
Prepare for calibration by inserting an ammeter in series with the load on the desired output. See Figure 3-7 below to
identify the OUT(+) and RTN(-) pins.
Use the PanaView Recorder Properties
following steps:
1. Make sure the system is connected to your computer, the system and the computer are turned ON, and
PanaView is up and running.
2. Under File open the New Meter Browser.
3.
Expand the drop-down menus until you access the meter and its submenus. Expand the last meter submenu,
Unassigned I/O .
4. Recorder 1
Double-click on
select the desired option from the
70
The load on the analog output must not exceed 600 W. Do not connect the ammeter
directly across the analog output terminals.
4
B
RTN
Figure 7: Ammeter Connection (Output A)
to calibrate an Analog Output. To access these menu options, complete the
Recorder 2
or to bring up the Analog Output properties window. Under the
Type
drop-down menu (see Figure 49 on page lxxi).
Terminal Block J1
1
B A A
SIG RTN SIG
Load
– +
Ammeter
General
tab,
Sentinel™ User's Manual