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Română Want to buy a Grundfos dosing pump, controller or complete dosing system?
Grundfos is an originally Danish manufacturer that has been developing and producing pumps since the 1940s. The company now operates in more than 60 countries worldwide and supplies a diverse product range with many different types of dosing pumps, controllers and other installations for water treatment.
On this page, we provide information on a number of Grundfos pumps, controllers and installations. We have set up the page so that on this page you can directly compare a number of Grundfos products with similar products from our range.
The products in this comparator are from the Italian company Emec. These products are comparable in quality, are competitively priced and you get a standard 5-year warranty on the pumps and controllers.
Compare Grundfos dosing pump
It is often difficult to make a comparison when it comes to dosing. There are very many different specifications and options. To make this easier, on these pages we have compared some commonly used Grundfos pumps, controllers and installations against Emec's alternatives.
Dosing pumps
Installations
Controllers
Need help with your choice?
Don't feel like ploughing through a whole story but just need good advice on a metering pump? We are happy to help you find the right pump. Contact us on 0164 770 865 or use our contact form by pressing the button below.
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Grundfos DDA compared with Emec Prisma
The Grundfos DDA series offers a number of metering pumps with a stepper motor for optimal and precise dosing applications. In addition, this pump features a SlowMode function that can control suction and a FlowControl function that ensures a constant flow despite bubbling. An alternative to this pump is the Emec Prisma. The table below provides a clear comparison between these two pumps.
Grundfos DDA | Emec Prisma | |
|---|---|---|
Features | ||
Pressure (Bar) | 4 to 16 bar | 2 to 25 bar |
Capacity (L/hour) | 7.5 to 200 litres/hour | 1 to 80 litres/hour |
Turndown ratio | 1:800, 1:1000 or 1:3000 | 1:4800 |
Function | ||
Constant | Yes | Yes |
CC/Pulse | Yes | Yes |
Pulse/pause mode | Yes | Yes |
mA 0-20/4-20 | Yes | Yes |
PPM | Yes | |
% | Yes | |
ML/q | Yes | |
Volt | Yes | |
Batch | Yes | Yes |
Additional inputs/outputs | ||
Slow mode | Yes | Yes |
Communication modules | Optionally equipped with Modbus or Ethernet via external add-ons | Optionally equipped with Modbus and Bluetooth. Built-in. Via dedicated app |
Pressure sensor | FlowControl | Built-in overpressure sensor linked to the stepper motor |
You can see that especially the maximum flow of the Grundfos DDA is higher than that of the Prisma. For the higher flows, Emec works with motor-driven metering pumps. You can always get in touch if you want more info on that.
Comparing Grundfos Oxiperm Pro with Emec Lotus Air
The Grundfos Oxiperm Pro and the Emec Lotus Air are both water disinfection systems that use a chlorine dioxide generator. Both systems have similar functions and features. However, there are some minor differences between these two systems. We have contrasted these differences in the table below. Interested in this product? Please contact us about the possibilities in your country!
Grundfos Oxiperm Pro | Emec Lotus Air | |
|---|---|---|
Features | ||
ClO2 capacity (gr/hour) | 5 to 60 | 10 to 60 |
HCl consumption (gr/hour) | 0.17 to 1.85 | 0.25 to 1.5 |
NaClo2 consumption (gr/hour) | 0.16 to 1.63 | 0.25 to 1.5 |
H2O consumption | 2.7 to 30.4 | 5 to 30 |
Max. back pressure (bar) | 9 | 5 - 8 |
About Emec Metering Pumps
Emec is an Italian company that has specialised in dosing systems and measuring equipment for chemicals for over 35 years. This extensive experience and passion for the product is reflected not only in the reliability and innovation of the dosing systems, but also in customer focus. For example, Emec offers a 5-year warranty* (!) as well as excellent after-sale support.
* Warranty applies to the equipment and diaphragm only. Not for the wet parts such as the pump head.
Comparing Grundfos DID with Emec LDS Plus
Comparing the Grundfos DID (CU 382 series) and the Emec LDS Plus, we see that Grundfos' controller has sensors with built-in electronics. The Emec sensors, in many cases, do not have this. The advantage of this is that the sensors, the parts that most often need to be replaced, are the most favourable at Emec in terms of pricing. In addition, the LDS Plus has more connection and communication capabilities, including the ERMES server that allows you to operate the controller remotely. Both controllers offer a package price depending on the value you want to measure.
The table below shows the exact differences between the two controllers.
Grundfos DID | Emec LDS Plus | |
|---|---|---|
Features | ||
Number of sensors | 1 (Grundfos DID-1) 3 (Grundfos DID-3) | 1 (features an additional temperature sensor as standard) |
Available sensors | Free chlorine,
Chlorine,
Chlorine dioxide,
Hydrogen peroxide,
Peracetic acid,
pH,
ORP,
Conductivity | pH,
ORP,
Free chlorine,
Chlorine,
Chlorine dioxide,
Conductivity,
Inductive conductivity,
Turbidity,
Dissolved oxygen,
Tracers |
Data logger | Internal SD card or USB stick | Internal memory or USB stick |
Inputs | 2x digital inputs 1x 4-20 mA input 1 alarm relay | Product level inputs Flow input mA water meter input (optional) Temperature probe input Standby input |
Outputs | 1 or 3x 4-20 mA outputs 2x digtal outputs | 2 relay output (varies by version) 2 opto coupled output (varies by version) 1 relay output for probe cleaning 1 relay output for circulating pump 3 mA output Alarm output (relay) |
Alarm | 1 alarm relay | General alarm No water flow alarm Out of range alarm Level alarm Max. dosing alarm damaged probe alarm |
Connections | RS485 GENibus Modbus | Ethernet GSM/GPRS Advanced USB Modbus ERMES server |
Humidity | 5 to 90%, uncondensed | 85% at ≤40 °C; 70% at 50 °C, non-condensed |
Nutrition | 85-264V (47-63 Hz) | 240VAC 50/60Hz
12 or 24VDC (optional) |
Protection | IP65 | IP65 |
Comparing Grundfos DID with Emec LDS Plus
Both Grundfos and Emec both offer turnkey controllers including sensors. Below is an overview of the values to be measured and the corresponding model.
Grundfos DID | Emec LDS Plus | |
|---|---|---|
Value | ||
pH | DID-1 BF-1-PH | LDSPH PLUS |
ORP | DID-1 TI1-ORP | LDSRH PLUS |
Free chlorine | DID-1 BF1-FCL2 | LDSCL PLUS + open or closed cell |
Chlorine dioxide | DID-1 BF1-CDI2 | LDSCL PLUS + SCL2 sensor |
Conductivity | DID-1 BF-1-CND | LDSCD PLUS |
Comparing Grundfos DID with Emec Centurio
Comparing the Grundfos DID controller and the Emec Centurio, we see that the difference is mainly in the number of sensors (channels) you can connect. In addition, the Emec Centurio also has more communication options. For instance, the Emec Centurio can be controlled remotely thanks to its operation with the ERMES server and web apps. As also described earlier for the Emec LDS Plus, the Grundfos DID has sensors with built-in electronics, where the Emec Centurio sensors (not included as standard) do not have this and are therefore more favourable in terms of price.
See the table below for the full comparison!
Grundfos DID | Emec Centurio | |
|---|---|---|
Features | ||
Number of sensors | 1 of 3 | 5 |
Available sensors | Free chlorine Chlorine Chlorine dioxide Hydrogen peroxide Peracetic acid pH ORP Conductivity | pH ORP Free chlorine Chlorine Chlorine dioxide Conductivity Inductive conductivity Turbidity Dissolved oxygen Tracers |
Processor | High-speed 32-bit Cortex M4 processor | High perfomance ARM A5 microprocessor |
Display | 128 x 64 px graphic display | 4.3-inch (800 x 600 px) full-colour LCD |
Data logger | Internal SD card or USB stick | Internal memory or USB stick |
Inputs | 2x digital inputs 1x 4-20 mA input 1 alarm relay | 8 product-level inputs Flow input 2 water meter inputs 1 RS485 bus probe input 6 slots for channels reading |
Outputs | 1 or 3x 4-20 mA outputs 2x digtal outputs | Alarm output 8 proportional outputs 6 on/off outputs 2 freecontact on/off outputs 6 current outputs |
Connections | RS485 GENibus and Modbus | Wi-Fi 3G/4G Ethernet Modbus ERMES Web App (dedicated app) |
Humidity | 5 to 90%, uncondensed | 85% at ≤40 °C; 70% at 50 °C, uncoded |
Nutrition | 85-264V (47-63 Hz) | 85-264V (50-60 Hz) |
Protection | IP65 | IP65 |
