Skip to content
Home » Shop » BT103S Speed-Variable Peristaltic Pump

BT103S Speed-Variable Peristaltic Pump

BT103S speed-variable peristaltic pump adopts high quality stepper motor drive, speed range 0.1~100rpm, speed accuracy<±0.2%, one channel flow range 0.00011~500ml/min. Through Lead Fluid APP software, the pump can be controlled remotely and running status can be monitored in real time. RS485 communication, MODBUS protocol is available,can be connected to upper computers such as computers, single-chip microcomputers, PLCs, frequency converters, and human-machine interfaces through a variety of signal modes to achieve systematic centralized control.

Flow: 0.00011~500mL/min
Max: 4 Channels

Functions and Features

High Precision Motor

High-precision stepper motor
Speed accuracy<±0.2%




Intelligent Cloud Control

wifi function
Support for remote monitoring of mobile apps





Super anti-interference feature
CE certificate




External Control Function

Rich external control functions
Support 5-24v wide voltage input
RS485 communication interface,
Modbus protocol is available



Exquisite Appearance

ABS plastic housing
Creative streamlined appearance
concise and beautiful



• LF -LED-OSsoftware system, high definition lattic e LCD display, switching between Chinese-English,parameter setting simplely, intuitive state display.
• Industrial mask keypad operation, simple and c onvenient, high durability.
• High quality st epper motor drive, speed precision, running stability,high-precision flow transmission.
• Start/ Stop, adjust speed, r eversible direction, full speed and,stat e memory (power-down memory).
• Can set the p arameters of running time , interval time and cy cle times to meet the r equirements of timing, quantitative, liquid dispensing and flo w testing.
• Slow speed stop and suc tion function, which c an effectively prevent the dropping of liquid when the machine stops.
• Keypad locked function to prevent misoperation.
• Streamline injection molding shell de sign, simple, beautiful and eas y to clean.
• The circuit board with c onformal coating makes it dust-proof and moisture-proof.
• Super anti-int erference feature, wide input v oltage range, acceptable for complex power environment.
• External analog adjust speed , e xternal control start-stop ,reversible direction, external control signal physical isolation.
• R S485 communication interface, Modbus protocol is available , support settinig c ommunication parameters, easy to connect with various control devices.
• Can match various high performance pump head, r ealize different pump head and driv e combination.
• The remote start-stop, adjust speed and timing oper ation can be realized through LeadFluid APP software. It also has monitoring functions such as stop alarm, change o f pump tube (op tional).
• Support blocking turn alarm, leak age alarm (op tional).
• Thermal printer can be c onnected, real-time printing operation parameters (optional).


Flow range 0.00011~500mL/min
Speed range 0.1~100.0rpm
Speed resolution
Speed accuracy
Dispensing volume
0.1~999.9 S/Min/H, time unit adjustable
Dispensing time
0.1~999.9 S/Min/H, time unit adjustable
Dispensing interval time
1~999,“0”Infinite cycle
External control signal input (1) Start/Stop: passive contact, external control input level (5~24V)
(2) Forward/Reverse: passive contact, 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)
Communication interface RS485, MODBUS protocol is available, DB15 external control interface
Power supply AC100~240V ,50Hz/60Hz
Power consumption <30W
Working environment Temperature 0~40℃, relative humidity<80%
IP grade IP31
2.8 kg

Applicable Pump Head and Tube, Flow Parameters

Pump Head

Channel Number


Per Channel Flow Rate(mL/min)

DG6(6 rollers)

Wall 0.8~1mm,ID≤3.17mm
DG10(10 rollers)
Wall 0.8~1mm,ID≤3.17mm

Above flow parameters are obtained by using silicone tube to transfer pure water under normal temperature and pressure, in actually it is effected by specific factors such as pressure, medium, etc. Above for reference only.




Statement:The final explanation right of above information belongs to Lead Fluid.

More Information