GE Transport PT878 User Manual

Chapter 8. Servicing the PT878
190 Transport® Model PT878 Portable Liquid Flowmeter User’s Manual
8.10.3 Testing the Watchdog Timer Circuit
The PT878 includes a watchdog timer circuit. If a software error causes the
meter to stop responding, this circuit automatically resets the meter. A
properly functioning PT878 restarts if you run the Watchdog Test.
To start the Watchdog Test, scroll to the Watchdog Test option in the Test
Menu and press
[ENTER]. The screen appears similar to Figure 126 below.
Figure 126: Watchdog Test Screen
Press
[F2] (No) to cancel the test and return to the Menu screen, or press [F3]
(Yes) to start the test. The PT878 should go blank for a few seconds, and
then restart. If it does not follow this sequence, consult the factory.
Dew Point, °C Signal, dB
-52.0
32
Pressure, PSIg
55.00
10.0
Run Time, Hours
Site Program Meter Logging Service
Units
Reports
Reference
MIS Probe
Factory Defaults
Flash Update
06
12
Factory Calibration
Test
X
No
Watchdog Test
Test Screen
Test Keys
Yes
** WARNING **
This test should automatically
restart your meter!
Press ‘Yes’ to start the test.
Press ‘No’ to cancel the test.
Watchdog Test

GE Transport PT878 Specifications

General

Brand	GE
Model	Transport PT878
Category	Measuring Instruments
Language	English