Automobile Parts - Air Flow Meter User Manual

Chapter 3 Operation Series 24-HP Instruction Manual
3-14 IM-24-HP
Diagnostics Menu
Password
ENTER
Use
keys to access menus
Diagnositcs
Menu
Sim Vor Freq
xxx
ENTER
Run Mode
Sim Temp 1,2
xxx
Sim Pressure
xxx
Highest Velocity
xxx
Highest Temp 1,2
xxx
Highest Pressure
xxx
System LOG
xx Files (ENTER)
Clear Sys LOG?
YES or NO
SysLog File # xx System Log File
Time
Date
Press EXIT to return
to System LOG
Momentarily displayed
Use Left and Right
arrows t o access all
system log files
Simulate Vortex
Frequency (Hz)
Simulate Temperature
(degrees F)
Simulate Pressure
(PSIA)
Highest Recorded
Velocity (ft/sec)
Highest Recorded
Temperature (degrees F)
Highest Recorded
Pressure (PSIA)
Use the Diagnostics Menu to simulate operation and review the system files. The system log files
contain time/date stamped messages including: power on, power off, programming time outs,
parameter faults, incorrect password entry and other various information relative to system
operation and programming.
The simulated inputs are for testing the meter to verify that the programming is correct.
Simulated vortex frequency allows you to enter any value for the sensor input in Hz. The meter
will calculate a flow rate based on the corresponding value and update all analog outputs (the
totalizer display and output is not affected by a simulated frequency). The simulated
pressure and temperature settings work the same way. The meter will output these new values
and will use them to calculate a new density for mass flow measurement. Note: when your
diagnostic work is complete, make sure to return the values to zero to allow the electronics to use
the actual transducer values.
If the meter display indicates a temperature or pressure fault, a substitute value can be entered to
allow flow calculations to continue at a fixed value until the source of the fault is identified and
corrected. Use only the units listed above for simulated values. If different units are
displayed, the value must be converted into the units listed above, and the displayed value
will be automatically converted into the display units.