BT103S Series Peristaltic Pump

We offer 20% discount on this model

Microflow Variable Speed Peristaltic Pump


The BT103S peristaltic pump is driven by a high-quality stepper motor, with a speed range of 0.1 to 100 rpm and speed accuracy of ±0.2%. Its single-channel flow rate range is from 0.0001 to 480ml/min. The RS485 communication interface, compatible with Modbus protocol, can be connected to computers, microcontrollers, PLCs, inverters, HMIs and other external devices for control.

Peristaltic pumps are suitable for use with our BSC series Chambers and MS series chambers. We usually keep in stock of those are two channels with 10 roller heads and variable speed. That means that during solution pumping, there is less ‘pulsation’ than say a 3 roller would make.  Also, the type we keep in stock has a range of 0 to 20ml/min which is well within the range most electrophysiology people want to use.  Other options are also available upon request.


  • Membrane keypad operation.
  • High-quality closed-loop stepper motor drive, accurate speed and smooth operation, allowing for high-precision flow transmission.
  • Basic functions such as forward and reverse, start/stop, full speed, speed regulation, state memory (power-down memory).
  • Parameters include running time, interval time, number of cycles, etc. to meet the needs of timed dosing, liquid dispensing, and flow testing.
  • The slow stop and anti-drip function can effectively prevent liquid dripping when stopping.
  • Key lock function.
  • A variety of external control signals can be used to control start/stop, forward/reverse rotation, speed adjustment, and optocoupler isolation.
  • RS485 communication, compatible with Modbus protocol, for convenient connection with various control devices.
  • A thermal printer can be connected for real-time printing of operating parameters (optional).
  • Can be connected with a variety of high-performance pump heads.


  • Flow rate: 0.0001 to 480ml/min
  • Speed range: 0.1 to 100rpm
  • Speed resolution: 0.1rpm
  • Speed Accuracy: 0.2%
  • Display : monochrome 128×32 dot matrix LCD, 77x32mm
  • Key lock: long press the direction key to lock, long press the start/stop key to unlock
  • Timing function: running time 0.1- 999 seconds/minutes/hours/day, intermittent time 0.1- 999 seconds/minutes/hours/day
  • Cycle: 0-999 times (0 is infinite cycle)
  • Suction return angle: 0-720 degrees
  • 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 adjustment: analog 0-5V, 0-10V, 4~20mA (optional)
  • Communication interface: RS485 MODBUS interface
  • Operating condition: Temperature 0-40°C; Relative humidity <80%
  • IP grade: IP31
  • Dimensions (L x W x H): 232 x 140 x 145 mm (9.1x 5.5 x 5.7 inch)
  • Weight: 2.9 kg (6.4lbs)


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