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EX
LANGO
The smart digital metering pump EX is a compact positive displacement, diaphragm dosing pump with BLDC motor and intelligent control electronics with minimum energy consumption.The efficency can be up to 90%. By using helical gears and auxiliary springs, the power consumption is reduced by 70% compared with conventional rebound designs.The EX series pump is FOC closed-loop control and operates at full stroke length to ensure optimum accuracy, priming and suction. The duration of each discharge stroke varies according to the capacity set, resulting in optimum smooth and continuous discharge flow. All our models can replace grundfos digital pump with higher flow rate.
Main Performance Parameters
Max Flow Rate: 1500L/H
Max Pressure: 10 Bars
Adjustment range: 1% and 100%
Steady State Accuracy: up to ± 0.1%
Allowable Ambient Temperature: 0~40°C.
Allowable Liquid Temperature: 0~60°C(PVDF/SS)
Voltage: Wide range AC100~240V,50~60Hz
Main Features
SMART Digital diaphragm dosing pump with internal brushless motor drive. High-end solution for complex and demanding applications (Digital Dosing Advanced)
High Accuracy: The EX series achieves market-leading accuracy with a high turn-down ratio of up to 1:3000, ensuring precise and continuous dosing without chemical waste.
Auto Flow Adapt: This function automatically adjusts the pump's motor speed to compensate for changing system conditions, such as fluctuating back pressure or degassing liquids, ensuring the required flow rate is maintained.
User-Friendly Interface: The pump features an intuitive control panel with a click button and multi-colored backlit graphical LCD display, making commissioning and operation easy. The display color changes based on the pump status, so it can be seen from a distance.
Primary Control
The EX series supports several standard signal modes to automate dosing based on external process variables:
Analog Control (0/4-20 mA): The pump adjusts its capacity proportionally to an incoming current signal.
Pulse Control: This mode uses external contact closures (like from a water meter) to trigger dosing. Users can set a specific volume to be dosed per pulse (e.g., ml/pulse).
Batch Control: Dosing is triggered by a pulse or a timer (cycle-based or week-based), allowing for scheduled or volume-specific chemical delivery.
External Stop: A dedicated input allows a master system (like a PLC) to halt the pump immediately regardless of other signals
Technical Parameter
Paramter | Description |
Mounting plate | basic mounting |
Supply voltage | AC100 - 240 V, 50 - 60 Hz single phase |
Enclosure class | IP 65 |
Control panel position | Front fixed |
Transparent protective cover for control elements | Yes |
Capacity setting | in litres |
LCD display | with background light in three colours for status indication: green, yellow, red |
Plain-text menu in different languages | Chinese/English/others on request |
Navigation buttons | Press key buttons |
Capacity adjustment | (0 . 1 - 100 %) |
Start / Stop key | Yes |
Menu key | Yes |
Quick exhaust | Yes |
Pulse control | in ml/pulse |
Pulse control | (1:n)(divide or multiply) |
Analog control | 4 - 20 mA |
Batch control | (pulse-based ) |
Dosing timer cycle | Yes |
Modbus control functions | Yes |
Auto de aeration | Optional functions |
Pressure monitoring (min / max) | Yes |
SlowMode ( anti- cavitation) | Yes |
Calibration mode | Yes |
Relay setting | alarm, warning |
External stop control | Yes |
Input for pulse control | Yes |
Input for analog 4 - 20 mA control | Yes |
Input for low -level signal | Yes |
Input for empty tank signal | Yes |
Output relay | (2 relays) |
Output analog 4 - 20 mA | Yes |
Output power | DC12V Max 50mA |
Repare mode | Yes |
Parameter Table
Model | Max Pressure | Flow | Diaphragm | Power | Current |
EX-C022 | 1.0 | 22 | 65 | 72W | 1 |
EX-C060 | 1.0 | 60 | 65 | ||
EX-C120 | 0.7 | 90 | 84 | ||
EX-C200 | 0.4 | 120 | 84 | ||
EX-D400 | 1.0 | 260 | 130 | 260W | 6 |
EX-D600 | 0.7 | 500 | 130 | ||
EX-D800 | 0.5 | 800 | 130 | ||
| EX-1000 | 0.4 | 1000 | 157 | 260W AC100-240V 50/60Hz | 6 |
| EX-1200 | 0.3 | 1200 | 157 | ||
| EX-1500 | 0.3 | 15000 | 157 |
Liquid End Material
Head | Ball | Seat | Cover | Oring | Diaphragm |
PVDF | Ceramic | PVDF | PVDF | EPDM | PTFE |
SS316 | SS316 | SS316 | SS316 | PTFE |
Connection
Model | PVDF | SS316 |
EX-C022 | DN15 welding union | 1/2" female thread |
EX-C045 | DN15 welding union | 1/2" female thread |
EX-C090 | DN15 welding union | 1/2" female thread |
EX-C120 | DN15 welding union | 1/2" female thread |
EX-D260 | DN20 welding union | 1" female thread |
EX-D500 | DN20 welding union | 1" female thread |
EX-D800 | DN20 welding union | 1" female thread |
| EX-E1000 | DN25 welding union | 1" female thread |
| EX-E1200 | DN25 welding union | 1" female thread |
| EX-E1500 | DN40 welding union | 1.5" female thread |
Identification Code
ID | EX | C | 22/10 | C | U | C |
Item | 1 | 2 | 3 | 4 | 5 | 6 |
Code | Serial | Power | Flow/Pressure | Material | Connection | Plug |
Item | Code | Description |
1 | EX | Smart Digital Pump EX Serials |
2 | C | Power 72W |
D | Power 260W | |
3 | XX/XX | Flow in L/H & Pressure in Bars( paramter see above table) |
| 4 | F | PVDF head/Ceramic ball/PVDF seat/PVDF cover/EPDM O ring |
6 | SS316 head/Ceramic ball/SS316 seat/SS316 cover/PTFE O ring | |
5 | F | Flange |
R | Hose | |
U | Union | |
Y | Thread | |
6 | A | Australia, New Zealand, Taiwan |
B | British | |
C | China | |
E | Europe | |
U | United States | |
S | South Africa | |
X | No Plug | |
1. The performance of the pump is obtained by clean water under a rated voltage and ambient temperature. | ||

Water treatment, waste water treatment, food&beverage, chemical, general industry, etc.


