Omega DPF500 Series User Manual

11

The DPF500 is provided with extensive self checking which assists the user in the location of setup entry errors 

and in reporting malfunctions or unusual operating conditions. When an error occurs, the display will fl ash.  Press 

any key to see the error message corresponding to the error that has occurred.  Press any key again to acknowl-

edge the error. (If the error can be eliminated by a change of setup values, the unit will automatically advance to 

the MENU so that the appropriate setup changes can be made).  

 Table - 1 illustrates the warning message, problem, and recommended corrective actions.

Diagnostic Error Messages Table-1

RATE ER 

Rate Low set  

Set Rate Hi greater

 

higher than Rate Hi    

than Rate Lo 

FAC ERR 

Factor = 0 

Set in correct Factor

“BAT” Descriptor 

Low Battery 

Replace battery(ies)

E total 

Total rollover 

None required

E RATE 

Rate exceeds 99999 

Use lower rate dec point

E pulse 

Pulse out Overfl ow 

Use different pulse scaler or 

 

 

totalizer decimal point

E FLASH 

Save to fl ash  

Write down displayed total and 

 

memory failed 

setup values if you are changing 

 

 

the battery.  If total wasn't saved, 

 

 

it will display an arbitrary total 

 

 

when new battery is installed.  In 

 

 

this case, reset the total to 0 and 

 

 

check the setup information.

 

 

If the unit is equipped with the analog output option, the 4-20 mA has been accurately set to 4.000 and 

20.000 mA by the factory. No calibrationshould be required.

The 4-20 mA output may be verifi ed  periodically by installing a digital milliamp meter(DMM) in series with the 

analog output and simulating a full scale or over range fl ow rate.

If the output is out of calibration, perform the following:

Remove power and/or disconnect battery(ies). Hold down the scroll (↑) key and replace the battery.  This will 

initiallize the unit and advance to the analog output calibration mode. Connect a DMM set to read current in series 

with a power supply (8.5 to 30 volts DC) to TB12 (+) and TB11 (–).  The output should read 4.000 ma (± 0.005).  

If it does not, Adjust the numbers on the display up or down until the output reads 4.000 ma (± 0.005).  Press the 

"E" key. The DMM should now read 20.000 ma (± 0.005).  If it does not, Adjust the numbers on the display up or 

down until the output reads 20.000 ma (± 0.005).  Press "E"  and the unit will return to the "RUN" mode.

 

Rate Low set  

Set Rate Hi greater

 

higher than Rate Hi    

than Rate Lo 

 

Factor = 0 

Set in correct Factor

“BAT” Descriptor 

Low Battery 

Replace battery(ies)

 

Total rollover 

None required

 

Rate exceeds 99999 

Use lower rate dec point

 

Pulse out Overfl ow 

Use different pulse scaler or 

 

 

totalizer decimal point

 

Save to fl ash  

Write down displayed total and 

 

memory failed 

setup values if you are changing 

 

 

the battery.  If total wasn't saved, 

 

 

it will display an arbitrary total 

 

 

when new battery is installed.  In 

 

 

this case, reset the total to 0 and 

 

 

check the setup information.

 

Rate Low set  

Set Rate Hi greater

 

higher than Rate Hi    

than Rate Lo 

 

Factor = 0 

Set in correct Factor

“BAT” Descriptor 

Low Battery 

Replace battery(ies)

 

Total rollover 

None required

 

Rate exceeds 99999 

Use lower rate dec point

 

Pulse out Overfl ow 

Use different pulse scaler or 

 

 

totalizer decimal point

 

Save to fl ash  

Write down displayed total and 

 

memory failed 

setup values if you are changing 

 

 

the battery.  If total wasn't saved, 

 

 

it will display an arbitrary total 

 

 

when new battery is installed.  In 

 

 

this case, reset the total to 0 and 

 

 

check the setup information.