PID Hotplate Stirrer with PT1000 Temperature Probe

What is the PID Hotplate Stirrer with PT1000 Temperature Probe?

A PID hotplate stirrer with a PT1000 probe measures temperature directly in the liquid and regulates heating with a PID algorithm, holding samples within about ±0.5 to ±1 °C. It is the right choice for temperature-critical reactions and reproducible methods.

Overview

This variant adds a PT1000 or Pt100 probe input and a PID controller so that the liquid, not the plate, is held at the set temperature. The controller learns or is tuned for heating characteristics and limits overshoot, which is often within ±1 °C once stable. A separate safety sensor limits plate temperature, typically adjustable, so that a probe that slips out of the liquid cannot cause runaway heating. Temperature range spans ambient to 300 or 500 °C, and displays show set and actual values for temperature and speed. RS-232 or USB ports let the unit log temperature and be controlled by software. Used with a holder, the probe can be glass-coated or stainless steel for chemical resistance. The format suits jacketed-bath replacement, kinetics experiments and quality control methods specifying a fixed temperature.

How does it work?

A hotplate stirrer has an electrical heating element, typically a resistive coil or film, bonded to a plate of aluminum, ceramic or glass-ceramic, with a magnet drive below it for stirring. A temperature sensor in the plate, or an external PT1000 probe placed in the liquid, feeds a controller that regulates power by PID or on-off control. External probe control is more accurate because the liquid temperature, not the plate, is held at the set point, which avoids overshoot and overheating. A separate safety circuit, typically a bimetal switch or independent electronic limit, cuts power if plate temperature exceeds a fixed value. Plate material affects heat distribution and chemical resistance: aluminum heats evenly and quickly, ceramic resists corrosion, and glass-ceramic is easy to clean. Residual-heat indicators warn users that the plate remains hot after switching off.

What are the key features?

• PT1000 probe measures liquid temperature directly
• PID control limits overshoot and holds stable temperature
• Adjustable independent safety limit on plate temperature
• Displays set and actual temperature and speed simultaneously
• RS-232 or USB interface for temperature logging and control
• Probe options in glass-coated or stainless steel for chemical resistance

What are the technical specifications?

A typical pid hotplate stirrer with pt1000 temperature probe configuration offers temperature range of Ambient to 300 °C (probe), temperature control accuracy of ±0.5–1 °C at medium, temperature sensor of PT1000 or Pt100, external, plate diameter of 135–180 mm, heating power of 600–1,000 W and stirring speed of 50–1,500 rpm. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The PID Hotplate Stirrer with PT1000 Temperature Probe is used in temperature-critical organic synthesis, kinetics and solubility studies, reproducible QC heating steps, enzyme reactions at fixed temperature and replacement of small water baths. Across the wider Hotplate Stirrers class, laboratories also deploy it for heated dissolution of solids, synthesis under controlled temperature and solvent evaporation in beakers.

Which standards and certifications apply?

Relevant standards and methods include IEC 61010-1, IEC 61010-2-010, IEC 61326-1, GB 4793.1, GB 4793.9 and ISO 9001. Certification candidates for this model are CE, RoHS and ISO 9001 manufacturing; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Use the unit on a heat-resistant, level surface and keep flammable materials away from the plate. Never heat a sealed vessel. Avoid spills on hot plates, since thermal shock can crack glass-ceramic and corrosive spills damage coatings. Place the external probe in the liquid, not touching the vessel wall, and use a probe clamp or holder. Do not exceed the rated temperature and confirm that the independent safety cut-out works during periodic inspection. Allow plates to cool fully before cleaning. Verify temperature with a calibrated thermometer periodically and record the result. For electrical safety refer to IEC 61010-1 and IEC 61010-2-010, and for hazardous solvents consider the fume-hood airflow and ignition sources.

How do I select the right PID Hotplate Stirrer with PT1000 Temperature Probe?

Select the PID probe model when temperature must be reproducible to about ±1 °C or when methods specify liquid temperature. It costs more than plate-controlled units. State required accuracy, probe material, interface, safety-limit adjustability and calibration certificate needs in the RFQ. Request accuracy data and confirm the safety cut-out value before ordering.

How does it compare with other Hotplate Stirrers variants?

Choose the plate material and maximum temperature first: aluminum for even heating up to about 380 °C, ceramic or glass-ceramic for corrosion resistance and up to 500 to 550 °C, and stainless steel where mechanical strength is needed. Decide whether plate-only control is sufficient or an external PT1000 probe with PID is needed for accurate liquid temperature. Check the independent safety circuit and its cut-out value, which matters when working with flammable solvents. Match plate diameter to vessel size, typically 135 to 200 mm for beakers and flasks, and confirm maximum stirring volume and speed range. Consider digital display, interface, hood compatibility and whether the housing is spark-free or has sealed controls. For temperature-sensitive samples choose a model with low overshoot and tested accuracy. Specify voltage and plug type.