Functions and Features
• Minimalist design: Easy to clean, no dead corners, compliant with GMP regulations.
• Compact size, powerful energy: Integrated small explosion-proof drive, aluminium alloy shell, high strength.
• 4.3-inch screen, wide viewing angle: Clear display from all angles.
• Explosion-proof buttons: Explosion-proof, dust-proof, waterproof, multiple protections for enhanced safety.
• IP66 protection for the entire unit: Specifically designed for industrial environments.
• Five working modes: Offers flow mode, volume dispensing mode, time dispensing mode, external control mode and programming modefor flexible
adaptation to various scenarios.
• Smart connectivity, collaborative operation: Supports RS485 communication, network communication, compatible with Modbus protocol,
support for Profibus extension (optional)
• Three-level user permission management: Secure protection against unauthorized parameter changes.
• Selected top-tier brand materials: Quality assured through meticulous selection of materials from top brands.
• Equipped with KL series pump heads and carefully designed observation windows, mechanical locks, enhancing safety.
• Patented calibration method: Shortens calibration time by three times compared to conventional methods, reduces liquid usage by three times.
Specifications
Explosion proof level: Ex db IIC T4 Gb Ex tb IIIC T130℃ Db
Explosion proof standard: GB/T 3836.1-2021 GB/T 3836.2-2021 GB/T 3836.31-2021
Flow range: 0.006-1800mL/min
Speed range: 0.1-360rpm
Speed resolution: 0.1 rpm
Speed accuracy: ＜±0.2%
Display: 5 inch industrial grade color LCD screen
Operation: Explosion proof button with 8 keys
Working mode: Flow mode, volume dispensing mode, time dispensing mode, external control mode, programming mode
Delay start time: 1S-999H
Scheduled Working Time: 1S-999H
Working time: 0.1-99.99S/M/H
Dispensing volume: 0.001-9999L
Dispensing time: 0-999, 0 means circle
Dispensing interval time: 0.1-999S/M/H
Suction angle: 0-720°
External control signal input: (1) Start/Stop: External control input level (5~24V), (2) Forward/Reverse: External control input level (5~24V), (3) Speed Regulation: Analog 0~5V, 0~10V, 4~20mA can be set.
External control signal output: (1) Start/Stop: Level Signal (following input voltage), (2) Forward/Reverse: Level Signal (following input voltage), (3)Analogue output 0~5V
Communication interface: RS485，RS232，Ethernet support Modbus protocol, Profibus extension (optional)
Power supply: AC 100-240V 50Hz-60Hz
Working environment: Temperature 0 ～ 40℃, relative humidity＜80%
Shell material: Aluminium alloy
IP grade: IP66
Driver dimension(L×W×H): 306*265* 288mm
Weight: 35kg(pump head included)
EF903 Suitable Pump Heads and Tubings, Flow Parameters
| Pump Drive | Pump Head | Speed | Tube Material | Tube | Max Flow（mL/min） |
| EF903 | YZ15/YZ15T | 360rpm | Silicone | 13# 14# 19# 16# 25# 17# 18# | 1800mL/min |
| YT25 | 360rpm | Silicone | 15# 24# 35# 36# | 1620mL/min |
Above flow parameters are obtained by using silicone tube to transfer pure water under normal temperature and pressure, in actually using it is effected by specific factors such as pressure, medium etc. Above for reference only.
Dimension(mm)
