Ex-proof metering pumps Ritmo®05 Ex have the same constructive characteristics and advantages of a metering pump Ritmo®05. They are equipped in full PTFE for all fluid-wetted components, have positively controlled valves and a pulsation-poor discharge process.
The pump head, located outside of the Ex-housing, is decoupled from the Ex housing. Leakage of the membrane or rupture of the membrane does not cause dosing liquid or gas to penetrate into the explosion-proof housing.
The pump housing is designed in IP54 and has an Ex-e approval.
A flushing connection is used to pressurize the Ex housing with an overpressure of 12 mbar. For this purpose, air / compressed air or nitrogen is fed into the housing. The overpressure in the pump housing prevents penetration of explosive atmosphere into the pump housing.
An Ex-p control unit in the pump housing with flushing and pressure control function and proportional valve technology with automatic leakage compensation ensure that the housing overpressure is maintained
Software equipment Ritmo®05-AK (AK = Antikavitation)
With this software, the user can vary the suction process in 0.5 seconds increased and adapted to its process. This offers itself et al during suction from the vacuum or when dosing viscous fluids or to reduce outgassing effects (fluids with high vapor pressure)
Software equipment Ritmo®05-VD (VD = vacuum on the pressure side)
Behind this software-side equipment is the ability to equqlize the discharge process into a vacuum process (e.g., in distillation columns or thin film evaporators) by the permanent clocking of the pressure-side valve of the metering pump. During the ejection process, the pressure-side valve is opened and closed at short intervals of approx. 250 msec.
Software features Ritmo®05-PA (PA = low-pulsation suction)
Behind this software-related equipment is the reversal of the dosing processes of an R05. Depending on the dosing rate entered, the dosing pump sucks the fluid slowly out of the process and pushes the aspirated dosing volume with max. short time via the pressure-side valve. With this software very even and product gentle suction can be realized.
Software Features Ritmo®05-TW (TW = Timer-Wait)
With the timer setting, the dosing pump is given the duration of the dosing process. With the wait setting, the dosing pump is given the time of starting a dosing. From this moment on, the dosing pump works at the set dosing rate until the preset time has elapsed.
Software features Ritmo®05-RD (RD = reversible dosing)
The dosing pump can work reversibly in its suction and discharge cycles. Especially with absolutely inert working conditions towards the environment or in certain dilution processes, this method of operation is appropriate. The metering pump may e.g. be filled with a suitable fluid, and in the further course of work, only a few suction and discharge strokes can be reversibly worked, without the inert fluid necessarily having to fill the pump chamber.
Software features Ritmo®05-VH (VH = variable stroke)
With this software the dosing pump works with variable stroke and always maximum discharge speed. The set dosing rate is ensured via the stroke length. This procedure is particularly advantageous in rapid dosing and control processes, typically the dosing control and readjustment of the dosing pump via a high-resolution balance.