PumpGuard

• Outstanding price-performance ratio
• Level detection by
  • Diver’s bell / pressure (see Level measurement by divers’ bell )
  • Pressure measurement with air-bubble introduction and blower monitoring
  • Flloat switch
  • Level probe / analogue input 4-20mA
• Single and duplex pump version
• Up to 72h mains failure alarm with 4xAA rechargeable battery module and Bon-Flash alarm lamp or BonAlarm alarm forwarder
• Durable LED display for working life for more than 10 years
• All settings can be done comfortably in the menu
• ATEX mode

The PumpGuard is designed as a compact control unit with the features of a “big” pump controller for the price of a small one. Therefore, a lot of handy features, that are normally not available at this price range, have been integrated. 

Level measurement possibilities

As standard option, level measurement is performed by diver’s bell / pressure sens-ing. This is a very efficient and reliable way to detect the preset switching levels. This measurement can be combined with one alarm float switch. A second option is to use float switches. Two float switches for the single-pump operation can be con-nected in the standard package, a third float switch can be added using the input module. Another possibility is to use an analogue pressure probe (4-20mA). The probe can be connected to the additional input module. 

Pump monitoring options

The pump current consumption is evaluat-ed digitally on all three phases according to applicable standards. Moreover, the re-versible temperature sensor and the irre-versible temperature sensor are moni-tored. As a third security level, the maximal pump runtime can be checked. 

Special pump behavior settings

To enhance functionality and comfort, the following functions have been added:

• Startup timeout: Delay after mains re-covery
• Overcurrent retry delay: Time in minutes for a retry of the pump after detecting overcurrent
• Overtravel duration: A time in seconds can be set to run a pump after detecting the Off level
• Forced pumping: Each X days the pumps are started for 3s to destroy possible fat crusts
• Forced operation timeout: To prevent smelling, pump to Off-level each X hours
• Single pump operation: Restrict to max. one pump, even at high level

ATEX mode

One way to reach ATEX conformity is, to connect a mini blower to the diver’s bell measurement. The PumpGuard is capable of minimal pressure monitoring to reach the required security level for this air-bubble introduction measurement. 
The digital inputs for the float switches are compatible with common Zener barriers, which limit the max. energy to ensure ATEX compatibility. 
Also, the analogue input can be combined with common Zener barriers. 

Mains failure signaling

The PumpGuard can be equipped with a cost-effective rechargeable battery mod-ule containing four AA rechargeable batter-ies. Together with BONNEL’s low energy LED alarm beacon BonFlash, the PumpGuard can signalize mains failures of more than 72h.  
 

BONNEL offers an Input Module and a Battery Modul for the PumpGuard. 

The Input Module is required for connecting:

• 3rd float switch (= at duplex pump stations that are controlled via float switches)
• 4-20mA pressure probe (100mbar probe)

The Battery Module is required for a mains failure alarm.

The alarm can be signalized via buzzer, the BonFlash alarm beacon or the or BonAlarm alarm forwarder. When signalizing via the BonFlash alarm beacon, only, a signalization of >72h can be achieved.

 

Yes, BONNEL is about to develop a Control Unit for Pump Stations. More information will be desplayed here soon.