Fluke 7350 Pneumatic Module, 76xx Interface Board, Pneumatic Pump, Gearmotor, System Valve

RUSKA 7350

Users Manual

76xx Interface Board

This board interfaces and conditions the pump position signal. The board interfaces these signals between the electronic and pneumatic module. This board also provides a 0 – 10 VDC signal to 0 – 100 psi electronic pneumatic regulators and the motor controller.

Pneumatic Module

The pneumatic section shown in Figure 2-2 houses components that control and accurately measure pneumatic pressure.

TRANSDUCER
RELIEF
VALVE	SUPPLY
TEST
PORT	PORT	AIR SUPPLY
		110 PSI
AIR-OPERATED		RELIEF
VALVE
		VALVE
		ELECTRONIC
		REGULATOR
PNEUMATIC
PUMP
SOLENOID
VALVE
	VARIABLE
	SPEED
	GEARMOTOR
		gld02.eps

Figure 2-2. Pneumatic Diagram

Pneumatic Pump

The pneumatic pump is a positive displacement pump that precisely varies the system pressure by compressing and expanding system gas. The pump is driven by a variable speed gear-motor. The pump has a position sensor that tracks the position of the pump plunger. It has two travel limit switches at each end of its stroke.

Gearmotor

The variable-speed gear motor drives the pneumatic pump. The gear box on the motor reduces the motor speed.

System Valve

The system valve isolates the pump and system from the gas supply regulators. It is a high pressure air-operated valve. This valve has a diaphragm operator that requires a minimum of 60 psi of air pressure to close the valve. The air is supplied to this valve through a three-way normally-open solenoid valve.

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