Description

The OS-T40-Plus / OS-T60-Plus LCD Digital Timed Overhead Stirrer is a powerful laboratory mixing system designed for precise stirring of medium to high-viscosity liquids. With a maximum stirring capacity of up to 50 L (H₂O) and a torque output of up to 60 N·cm, the stirrer provides reliable mixing performance for demanding laboratory and industrial research applications.

The instrument features a wide speed range of 50–2200 rpm and supports forward, reverse, and intermittent rotation modes to accommodate different mixing processes. The integrated brushless DC motor ensures stable operation, low noise, and long service life while maintaining high efficiency during continuous operation.

An LCD display provides real-time monitoring of key parameters including speed, torque, time, and temperature. The built-in timer function allows programmable operation from 1 minute to 99 hours 59 minutes, enabling precise control of experimental workflows. When connected to the PT1000 external temperature sensor (±0.2 °C accuracy), the system can display and monitor sample temperature during stirring.

The overhead stirrer automatically adjusts torque output to maintain constant speed when sample viscosity changes, ensuring stable mixing conditions. Safety features such as overload protection, safety lock, and alarm notifications help protect both the instrument and samples during operation.

Equipped with multiple communication interfaces including RS485, USB, and Type-C, the OS-T40-Plus / OS-T60-Plus allows convenient data transmission and remote monitoring. With a chuck clamp diameter range of 0.5–10 mm and a robust compact design, this overhead stirrer provides a reliable and versatile solution for laboratory mixing tasks involving viscous liquids and large-volume samples.

Specifications

Parameter	Specification
Max. Stirring Quantity [H2O]	50 L
Speed Range	50–2200 rpm
Time Settings Range	1 min – 99 h 59 min
Max. Torque	60 N·cm
Viscosity Max.	50000 mPa·s
Motor Type	Brushless DC motor
Speed Display	LCD
Torque Display	LCD
Forward and Reverse Rotation	Forward, reverse, intermittent mixing
Temperature Display Accuracy	0.1 ℃
External Temperature Sensor	PT1000 (accuracy ±0.2)
Overload Protection Display	LCD
Data Interface	RS485, Type-C, USB
Chuck Clamp Range Diameter	0.5–10 mm
Motor Input Power	110 W
Motor Output Power	100 W
Power	120 W
Voltage / Frequency	100–240 V, 50 / 60 Hz
Dimension [W × H × D]	90 × 240 × 227 mm
Weight	3.5 kg
Permissible Ambient Temperature	5–40 ℃
Permissible Ambient Humidity	80% RH

Features

Timing function: Timing range 1 min – 99 h 59 min
Thermometer function: There is an external temperature sensor inlet that plugs into the instrument and displays the sample temperature
Safety lock to prevent accidental change of operation
Paddle “through-the-top” design for easy container replacement
LCD display of speed, torque, timing, temperature, etc.
Constant speed: Automatically adjusts the torque according to changes in sample viscosity and maintains the set speed
Speed direction control: The speed can be switched forward and reverse
Buzzer: When the machine malfunctions or the timer function counts down to the end, the buzzer emits a “drip drip drip” sound
Without external transformer, the machine is safer to use
Calibration function: Calibration can be achieved for torque and temperature of the sample

Applications

High-Viscosity Liquid Mixing: Suitable for stirring viscous samples such as polymer solutions, gels, and suspensions.
Chemical Reaction Processing: Provides controlled mixing for chemical synthesis and reaction processes in research laboratories.
Pharmaceutical and Biotechnology Research: Used for formulation development, sample preparation, and reagent mixing.
Material Science Experiments: Supports preparation of emulsions, dispersions, and suspensions used in materials research.
Large-Volume Laboratory Mixing: Ideal for laboratory mixing applications involving volumes up to 50 L.
Process Development and Scale-Up Studies: Suitable for pilot-scale laboratory experiments and process optimization studies.