ULTRA 4 INSTRUCTION MANUAL 
 
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P981 Increment 
By default, simulation mode will move by 0.1m steps in manual simulation 
and by 0.1m/min in automatic simulation. Altering the increment can 
change this value. 
P982 Rate 
In automatic mode, the rate at which the level will move up and down, is 
determined by distance, P981 Increment and the time, P982 Rate which by 
default is set to 1min and can be changed as required. To increase the rate 
at which the level moves increase the Increment (P981) or decrease the 
Rate (P982). To decrease the rate at which the level moves decrease the 
Increment (P981) or increase the Rate (P982). 
P983 Start Level 
When using automatic simulation this parameter can be used to pre-
determine the point at which the simulated level will start at and return to. 
This can be used to simulate the lowest point to which the level would 
normally operate. 
P984 Inc. Change 
When using automatic simulation, you can incrementally increase or 
decrease the rate whilst running simulation. The rate is increased /decreased 
incrementally by the value P984 (Incremental Change) by using the 
“decimal point” key to increase and the “plus/minus” key to decrease the 
rate of change.     
Default = 0.1m 
Hardware 
P990 Self Test 
If you enter 1 for this parameter, then the unit will perform a self-test. This 
will confirm that the various parts of the circuitry are working correctly. You 
will see confirmation messages that the clock and the EEPROM are working 
correctly, and error messages for any parts that fail.