SPRAYMASTER 200
15
2.5.2 Minimum Pulse Width
Cal Mode 2 ( + Power-up ) - Channel 3
This sets the minimum pulse length (milliseconds x 4) driving the flow control
valve. The pulses becomes shorter as the application rate nears the target
rate. A lower setting gives shorter pulses - too short and the flow rate may not
change sufficiently. If the pulse is too long, the system may be unstable
about the target rate.
Press and hold the key, and adjust the value using the '+' and '-' keys.
Default: 4.0 (16 ms) Range: 0 - 9999
2.5.3 Deadband
Cal Mode 2 ( + Power-up ) - Channel 4
The Deadband function sets the range over which the flow rate will vary
about the target rate before the control valve will respond. A lower value will
make the control respond to a smaller variation in flow and vice versa. If the
value is too low the system may be unstable about the target rate.
Press and hold the key, and adjust the value using the '+' and '-' keys.
Default: 2.0% Range: 0 - 99.9%
2.5.4 Startup Delay
Cal Mode 2 ( + Power-up ) - Channel 5
If a spray boom is empty of liquid, the flow into it is rapid until it pressurises.
The flow rate then reduces to the correct flow rate. Consequently the system
takes some time to stabilise at the target rate. The instrument must be
stopped from reacting to the initial flow surge.
Set the delay time to equal the time it takes for the sprayer system to reach
normal working pressure. When the whole boom or individual section is
switched on, the control valve will not operate for this time period.
Press and hold the key, and adjust the value using the '+' and '-' keys.
Default: 2.0 seconds Range: 0 - 99.5 seconds
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