Diaphragm dosing pump with stepper motor, for high-precision dosing at low and medium flow rates. A single multifunction model for civil, sanitary and industrial applications.
Combines all dosing modes in a single model: constant, proportional to a water meter, to 4/20 mA or 0-10 V signals, timed and batch.
Pump head: PVDF, PP, PMMA or AISI 316L
State how the pump must dose, the product, the flow rate and the back pressure: the guide proposes the most suitable model and configuration of the series, among those listed in the technical data.
Answer the questions and enter flow rate and back pressure: the recommended model appears below.
The pump doses at a constant frequency, according to the flow rate set in l/h or ml/h.
When the run contact closes, the pump doses the set quantity of chemical.
The pump runs the programmed cycle: during the WORK time it doses the set quantity of chemical; during the PAUSE time dosing is suspended.
For each pulse received from the pulse-output water meter the pump doses the set quantity, with a resolution starting from 0.0001 cc.
The pump doses in proportion to the pulses received from an external controller.
Dosing is calculated from the pulses of the pulse-output water meter and the set PPM value; the concentration of the chemical and the volume per stroke can be programmed.
Dosing is calculated from the pulses of the pulse-output water meter and the set MLQ value (millilitres per quintal).
Dosing is calculated from the pulses of the pulse-output water meter and the set percentage (%).
A pulse from an external contact starts the dosing of the set quantity; pause and work cycles can be programmed.
The 0-4/20 mA current signal controls dosing proportionally, between the set minimum and maximum values.
The 0-10 V voltage signal controls dosing proportionally, between the set minimum and maximum values.
Up to 16 weekly on/off timers can be programmed, during which the pump doses the set quantity of chemical.
The stepper motor and the control software deliver the product almost continuously, without the pulsations typical of solenoid pumps.
Thanks to the stepper motor, the Prisma adjusts dosing electronically, both in frequency and in the volume of each injection, dividing it into 4,800 micro-injections (turndown ratio 4,800:1): the software distributes the steps according to the mode and parameters set, for the most continuous dosing possible, comparable to that of a syringe and virtually free of pulsations. The pump has no mechanical stroke adjustment.
Slow mode reduces the suction speed and, with it, the maximum flow rate, down to 30% of the nominal value.
Adjustable maximum flow rate: the pump automatically recalculates the distribution of the 4,800 steps over the new maximum flow rate, like having 70 pumps in one (from 100% to 30%).
Viscous liquids: slower suction makes priming and dosing of highly viscous products, up to 10,000 cPs, simpler and more reliable.
The dosing of a solenoid pump with the volume of each injection at 100% and at 50%, compared with that of the Prisma stepper motor pump.
The display colour changes with the operating status, so alarm conditions can be recognised even from a distance.
Normal operation according to the set parameters, no active alarms.
Non-blocking alarm, for example waiting for an external signal.
Blocking alarm, for example the chemical in the tank running out.
Pump stopped by an external control signal (stand-by).
The Prisma pump supports two-way remote control: from the cloud portal, via Wi-Fi, settings can be changed, operation can be checked and alarms can be received; alternatively, the pump can be integrated into a PLC via Modbus RTU, or it can send a read-only 4/20 mA signal.
Allows connection to the Nimbus cloud portal to change settings, check operation and receive alarms, such as the chemical running out.
Integration into your PLC: all pump parameters can be managed from your control interface.
Current signal proportional to the instantaneous flow rate, to be fed to your PLC / SCADA for remote monitoring of operation (read-only).
Wi-Fi and Modbus RTU can be used together; with the 4/20 mA output neither Wi-Fi nor Modbus is available.
A single account brings together all registered installations, each with its own devices: the web portal, free of charge and with no subscription, can be accessed from PC, Mac, tablet and smartphone and allows every parameter to be both viewed and changed, with an encrypted connection and protected access.
On a single screen: probe readings, chemical levels, pump activation thresholds and active alarms, with the status of installations and devices (normal, warning, alarm, standby, not connected).
Installations appear on an interactive map with their status and open with a click; for each one, the local weather conditions and temperature are also shown.
Archive of measurements and alarms, available for consultation at any time with charts and numerical reports exportable in Excel format.
Alarm thresholds for readings, dosing, faulty probe and out-of-range readings, with notification by e-mail or SMS depending on the communication system; a warning is also issued when an installation remains disconnected beyond the set time.
Remote modification of the set points, of the dosing pump activation thresholds and of the corresponding hourly flow rate.
Status of relays, pulse outputs, digital inputs and current outputs, with the name assigned to each connection.
Tasks are scheduled by installation or by device and assigned to technicians; a reminder is sent by e-mail two days before the due date. Each task is shown as scheduled, due, overdue or completed.
The main account has full access and creates the technicians’ accounts, each enabled only for the assigned installations and devices; the last login and activity of each technician are visible.
Reports on devices, tasks and technicians, downloadable in PDF or CSV with the customer’s logo; the log keeps the history of operations and disconnections.
Logo, main colour and light or dark theme; the tiles on the main screen can be rearranged by dragging them. Two installations can be displayed side by side for comparison.
Each device is added through a guided procedure: the model is recognised automatically and associated with the installation, together with the technician to be contacted.
As an alternative to the portal, the Modbus RTU or TCP/IP port allows integration into the plant supervision system.
Performance varies with the working back-pressure (head) and with the characteristics of the chemical.
Suitable for most chemicals: the standard configuration for the most common applications.
| Code | Max pressure (bar) | Max flow rate (l/h) |
|---|---|---|
| Prisma 2001 | 20 | 1 |
| Prisma 2502 | 25 | 2 |
| Prisma 2005 | 20 | 5 |
| Prisma 1607,5 | 16 | 7.5 |
| Prisma 1013 | 10 | 13 |
| Prisma 0720 | 7 | 20 |
| Prisma 0528 | 5 | 28 |
| Prisma 0450 | 4 | 50 |
| Prisma 0370 | 3 | 70 |
| Prisma 0280 | 2 | 80 |
For chemicals with a viscosity between 100 and 10,000 cPs.
| Code | Max pressure (bar) | Max flow rate (l/h) |
|---|---|---|
| Prisma 2001 | 20 | 1 |
| Prisma 2502 | 25 | 2 |
| Prisma 2005 | 20 | 5 |
| Prisma 1607,5 | 16 | 7.5 |
| Prisma 1013 | 10 | 13 |
| Prisma 0720 | 7 | 20 |
| Prisma 0528 | 5 | 28 |
| Prisma 0450 | 4 | 50 |
| Prisma 0370 | 3 | 70 |
| Prisma 0280 | 2 | 80 |
Nominal flow rate measured with water at room temperature: with viscous liquids it must be checked with the product being dosed.
Suitable for most acids, for peroxides and for sodium hypochlorite (chlorine).
Suitable for sodium hydroxide (caustic soda).
Suitable for peracetic acid and sodium hydroxide.
Suitable for medium and high viscosity substances.
In addition to the standard configuration, versions dedicated to particular applications are available; the performance of each is given in the technical data. The pages by application compare the suitable pumps of all the series.
Slow mode reduces the suction speed, making priming and dosing of viscous chemicals easier and more reliable, up to 10,000 cPs.
The most frequent causes of malfunction and the corrective actions to check before contacting technical support.
Insight: the pump does not prime and does not dose →| Alarm | Meaning | Action |
|---|---|---|
| LEVEL | Product low (warning) or empty (alarm). The STOP AFTER parameter sets the volume still to be dosed. | Refill the tank: the alarm resets automatically. |
| OVERFLOW | In PPM, PERCENTAGE or MLQ mode the required frequency exceeds the rated value; in BATCH mode a signal was received during dosing. | Check the settings and the external signal. |
| NO INPUT | The input signal is missing. | Check the external signal and its connection. |
| HALL SENSOR | Pump motor blocked. | Switch off the pump and contact us. |
| HIGH TEMPERATURE | Excessive pump temperature. | Switch off the pump and contact us. |
| STAND-BY | Pump stopped by the external signal. | Normal condition: the pump restarts when the enable signal is restored. |
Yellow display: alarm that does not stop the pump; red: pump stopped. Active alarms can be viewed under MORE › INFO › ALARMS and can be assigned to the alarm relay output.
Connect the tubing, open the bleed valve, select PRIMING on the display, set the time and start; close the bleed valve as soon as the chemical comes out. The procedure is required at first start-up, after long periods of inactivity or when there is air in the pump head.
The TEST function runs the pump for the set time (1 – 60 minutes): measuring the chemical drawn in makes it possible to determine the actual flow rate under the installation conditions.
Every three months check bolts and seals; once a year check that flow rate, pressure and power match the rating plate data. With abrasive or corrosive chemicals, shorten the intervals.
If the problem persists, contact us. Before sending the pump for servicing, empty the pump head of chemical and dry it.
According to the operating mode and the set parameters, the pump automatically adapts the injection frequency to ensure the required dosing.
The integrated LCD display allows the pump to be programmed and its operating status to be monitored at all times.
The pump is supplied with a low-level probe for the tank: when the chemical runs out, it shows the alarm on the display and activates the corresponding output.
Pump start and stop can be controlled remotely by means of a run/stop contact from a PLC or another source.
In the event of a fault, a volt-free contact is activated, configurable as normally open (N.O.) or normally closed (N.C.), to drive a visual or audible signalling device, send an SMS or report the event to a PLC.
Tell us about your application: our technical staff will recommend the most suitable model, configuration and accessories.
Call or write to us: a technician will reply with a tailored proposal of controllers, pumps, probes and accessories.