11
8860 Dual Channel Conductivity/Resistivity Controller
"- - - -"
"Value Must be 100 or less"
"Value must be more than 0"
"Value must be 400 or less"
"Reset to Factory Calibration"
"Too Much Error
CHECK SENSOR"
Display is over range. This may be a
normal condition if your process operates
at/near the limits of the sensor range.
The menu item being set is a percentage
value and must be less than 100.
The menu item being set cannot be zero
or a negative value.
The Pulse Rate for Relay and Open
Collector outputs cannot be greater than
400 pulses per minute.
A value of "0" is being set into
".. Set: Conductivity" menu item.
The calibration offset entered is
beyond the allowable tolerances of the
instrument.
Check sensor for correct range.
Check Decimal setting in OPTIONS menu.
Check Calibrate menu settings for incompatible
SOURCE and RANGE values.
Select a value from 0 to 100.
Select a value greater than zero.
Select a pulse rate less than 400
This will remove any user calibration from the
"..Set Conductivity" and "..Set Temperature"
items in the Calibrate menu.
Check calibration procedure for accuracy.
Check sensor for proper operation.
Check any cable extensions for poor splices or
termination.
Display Condition
Suggested Solutions
Possible Causes
Troubleshooting
Technical Note
If a Current Loop is locked at 3.6 mA, the problem is related to the temperature circuit:
This occurs only if the 8860 detects a resistance from the temperature sensor that is less than 250
Ω
or greater than 2800
Ω
.
• Check the sensor wiring for open/short or poor connections on white (TEMP IN) and black (ISO GND)wires.
• The PT1000 temperature device in the sensor is defective.
• The transmitter is defective.
