Parts

Water Spray Timer (Part No. 2774)

The Muirhead® Variable Spray Controller, (Part No.2774) utlises automatic spray control that pulses the water spray on and off at a variable rate dependant on the speed of the truck. The spray will automatically turn off when the truck slows down or stops and will automatically turn on when the truck is moving.

The deivce also incorporates an optional one shot output that will allow the spray output to activate for a preset time when the vehicle is not

moving, overriding the speed input.

Auto Spray Controller (Part No. 6232)

The Muirhead® Auto Spray Controller (ASC) has been designed to provide semi-automated spraying dependent on the conditions. The controller has 3 outputs, two of which control the spray heads and one which controls the water delivery by way of a variable PWM output.

The ASC also incorporates a speed input which senses frequency and two digital inputs for adjusting the water spray by adjusting the variable PWM output. The system is configured to have the spray heads activate automatically in relation to the ground speed of the vehicle.

The ASC has various set points which are adjustable via a custom software package. While the machine is travelling below a pre-set speed, it cuts off the spray heads and the water spray. At various levels of ground speed it will vary the output controls. It also has two inputs which adjust the flow output. The low input is designed to operate the PWM output at a reduced duty cycle and the high input is designed to activate the PWM output duty cycle at the maximum level when calibrated.

The ASC will connect to a custom water spray system installed onto a water truck to control the spray heads and the water pump. It will sense the speed at which the truck is travelling via a wire that is connected to the truck's electric speedometer. The spray outputs will be factory set but will be field adjustable via a computer, PowerMaster software version 2.44 up and a programming lead 3314.

Note that the speed settings will have to be calibrated for each different machine.

7 Function Variable Spray Controller (Part No. 8995)

The Muirhead® Variable Spray Controller (VSC) incorporates seven (7) function switches with LED indication to signal the active state and a number of inbuilt features for the spray control.

Functions include automatic spray control that pulses the water spray on and off at a variable rate dependant on the speed of the truck. The spray will automatically turn off when the truck slows down or stops and will automatically turn on when the truck is moving.

The VSC will connect to the existing truck solenoid valves that control the water pump and three (3) water spray heads. It will sense the speed of the truck via a wire that is connected to the truck’s electronic speedometer. The spray outputs will be factory set and are field adjustable using a computer fitted with PowerMaster software version 2.10 and a programming lead.

Note that the speed will have to be calibrated for each machine.

6 Function Variable Spray Controller (Part No. 10910)

The Muirhead® Variable Spray Controller (VSC) is the latest addition to the Muirhead® range of water spray controllers.

The system has 6 spray head outputs for individual control, auto/manual function switch, 3 adjustable speed settings, one shot pulse and an adjustable constant pulse setting. The controller has been designed to interface into an OEM mobile water truck control panel.

There are added features for cannon and pump control with inputs from vehicle speed sensor and tank low level sensor.