What makes our Diaphragm Pump Guardian System different?
The Air Operated Diaphragm Guardian System monitors fluid pressure, changing its output if the monitored pressure rises above or falls below the set point of the Guardian (dependant on configuration), controlling the associated pump according to the following applications:
- Dry Run & Stop
- Deadhead & Stop
- Deadhead & Restart
- Dry Run & Deadhead
- Barrier Pump Monitoring & Control
Dry Run & Stop
The Air Operated Diaphragm Guardian System monitors the fluid discharge pressure of the pump, stopping it if the pressure falls below the setpoint, caused by a lack of media on the suction causing air to be ingested into the pump. (PDRN System)
Deadhead & Stop
The Air Operated Diaphragm Guardian System monitors the fluid discharge pressure of the pump, stopping it if the pressure rises to the setpoint, caused by a closed valve or overpressure in the discharge line. (PDHS System)
Deadhead & Restart
The Air Operated Diaphragm Guardian System monitors the fluid discharge pressure of the pump, stopping it if the pressure rises to the setpoint, caused by a closed valve or overpressure in the discharge line. When the pressure falls below the set pressure, the pump automatically restarts. (PDHR System)
Dry Run & Deadhead
The Electronic Dry Run & Dead Head Protection System guarantees reliable, effective and safe operation of your pump,whilst reducing the consumption of compressed air, meaning lower operating costs! Pump switch-off thresholds can be set with accuracy up to 0.05 bar, allow incredibly accurate setting and protection parameters. (EDRH System)
Barrier Pump Monitoring & Control
Barrier pumps (TB) have an additional set of diaphragms used to back up the primary diaphragms. In case of a breach, the liquid remains inside the pump, instead of leaking out through the air exhaust. The Guardian monitors the pressure between the primary and secondary diaphragms, stopping the pump if the pressure increases above the set point. (PDFM System)
This system is to be used in conjunction with the Diaphragm Alarm System which will immediately alarm and shut of the pump at an eventual diaphragm break. It ensures that no liquid will leak to the environment or to the air system of the pump – a perfect system where you require a high level of safety.
How the Barrier Pump monitoring & control system works:
The system consists of a backup diaphragm pump (TB), and a control and alarm system. Under normal operation, the chamber between the backup diaphragm and the wetted diaphragm is set to vacuum by the control system. If any of the diaphragms would break, the pressure will rise in the vacuum chamber. The control system will then switch off the pump and turn on the horn. This system is allowed for use also in explosion hazardous areas since only pneumatic components are used.
The panel is 200 x 200 x 130 mm and is available for all Tapflo AODD pumps from 2” and up and can be supplied in either ABS Plastic (IP55 or 65) and Stainless Steel AISI 316 (IP44).
