49
9900 Transmitter
Condition
Possible Causes
Suggested Solution
Wrong Sensor
Incorrect sensor installed
Connect correct sensor
Sensor Type set incorrectly in 9900
Set correct sensor TYPE in INPUT menu
(see page 25)
Wrong Code
Wrong password entered
Enter correct password (see page 26)
K-Factor Out Of Range
K-Factors cannot be set to 0
Enter K-Factor from 0.0001 to 99999
Backlight inoperative
9900 operating on loop power
Connect 9900 to 10.8 to 35.2 VDC power.
Backlight turned OFF
(
NOTE:
Backlight can turn off
automatically in AUTO mode)
Set BACKLIGHT to LOW, HIGH or AUTO
in OPTION menu.
Relays 2 and 3
inoperative
9900 operating on loop power
Connect 9900 to 10.8 to 35.2 VDC power.
Relay Module installed incorrectly
Remove and reseat relay module
Wrong settings in RELAY menu
Use test relay to verify relay operation then
check relay settings.
Relay LEDs inoperative
9900 operating in Loop Power
Use DC power. Check relay states in VIEW
mode for status.
Open Collector (R1) or
Relay (R2 or R3)
always on
Hysteresis value too large
Change the hysteresis value
Defective Relay Module
Replace Relay Module
OVR relay state
(Pulse Overrun)
Relay pulse rate exceeds maximum of
300 pulses per minute.
Increase volume pulse setting
Reduce system
fl
ow rate
Pulse width set too wide
Decrease pulse width
(
NOTE:
Max pulse rate = 300; max pulse width = 100 mS.
– – – – –
Flow rate exceeds display capability
Increase Flow units time base
Change unit of measure
Troubleshooting