Thermal Analysis Instruments for Physics Teaching Laboratories
1. Thermal Physics Experiment Instruments
We manufacture thermal physics experiment instruments for university physics laboratories, vocational colleges, and secondary schools. Our range covers five teaching instruments for solid melting point measurement, boiling point and vapor pressure experiments, thermal conductivity measurement, temperature sensor characterization, and comprehensive thermal physics experiments.
The range includes:
- LB-SMP Solid Melting Point Apparatus – For observing solid melting processes, measuring melting points, recording cooling curves, and studying binary alloy phase diagrams.
- LB-DBP Positive and Negative Pressure Boiling Point Apparatus – For investigating how positive and negative pressure affect liquid boiling points and calculating latent heat of vaporization.
- LB-EPM Thermal Conductivity Apparatus for Good Conductors – For measuring the thermal conductivity of good conductors using the electrical power method.
- TSC Temperature Sensor Characteristic Experiment Apparatus – For comparing six types of temperature sensors and their measurement methods.
- TIM Comprehensive Thermal Physics Experiment Apparatus – For conducting six different thermal physics experiments with one instrument.
Laboratories can select individual instruments for specific teaching experiments or combine them to cover a wider range of thermal physics topics.
2. Product Specifications and Features
2.1 LB-SMP Solid Melting Point Apparatus
| Specification | Value |
|---|---|
| Heating power | 300 W |
| Temperature range | 0–500 °C |
| Digital thermometer measurement range | 0–500 °C |
| Temperature setting range | 20–500 °C |
| Timing range | 1–99,999 s |
| Display | Five-digit digital display |
| Sound prompt intervals | 3 s, 5 s, 10 s |
The LB-SMP has a transparent, vacuum-sealed sample furnace, so students can observe the melting process directly. Multilevel temperature control, a five-digit display, and selectable sound prompt intervals support temperature observation during the experiment.
The apparatus comes with three lead-tin samples of different compositions. Students can use these samples to study melting behavior and binary alloy phase diagrams, or prepare their own samples for additional experiments. The instrument also supports cooling curve experiments and the study of crystal and amorphous materials.
2.2 LB-DBP Positive and Negative Pressure Boiling Point Apparatus
| Specification | Value |
|---|---|
| Operating pressure range | −0.07 to +0.07 MPa |
| Differential pressure vacuum gauge range | −0.1 to +0.15 MPa |
| Pressure gauge accuracy class | 1.6 |
| Pressure measurement error | ≤5% |
| Temperature measurement range | 0–100.0 °C |
| Temperature resolution | 0.1 °C |
| Boiling point measurement error | ≤1% |
| Overall dimensions | 35 × 28 × 42 cm |
| Heating flask diameter | 78 mm |
| Heating flask height | 210 mm |
| Observation window | 150 × 19 mm |
The LB-DBP allows students to study boiling point changes under both positive and negative pressure. These measurements can also be used to calculate the latent heat of vaporization.
A red-illuminated observation window allows students to observe the liquid during heating and boiling. The apparatus includes both a vacuum pump and a pressure pump for experiments under different pressure conditions. It is suitable for non-corrosive liquids, including water and alcohol.
2.3 LB-EPM Thermal Conductivity Apparatus for Good Conductors
| Specification | Value |
|---|---|
| Heater voltage | 24 V DC |
| Temperature control | PID |
| Temperature control accuracy | ±0.1 °C |
| Temperature measurement modules | 2 |
| Temperature measurement accuracy | ±0.1 °C |
| Electrical power measurement time | 10–360 s |
| Measurement time increment | 5 s |
| Electrical energy measurement range | 0–99,999 W·s (J) |
The LB-EPM measures the thermal conductivity of good conductors using the electrical power method. Its replaceable sample arrangement allows students to test and compare different samples.
The instrument uses air cooling, so the experimental setup does not require a separate water tank or water pump. It also features PID temperature control and two temperature measurement modules.
2.4 TSC Temperature Sensor Characteristic Experiment Apparatus
| Specification | Value |
|---|---|
| Dry heating well | 6 holes |
| Temperature control | PID |
| Temperature measurement resolution | 0.1 °C |
| Temperature control accuracy | ±0.2 °C |
| Voltmeter resolution | 10 μV |
| Voltmeter input impedance | 100 MΩ |
| Voltmeter measurement ranges | 3 ranges |
The TSC supports experiments with six types of temperature sensors:
- Platinum resistance temperature sensors
- Thermistors
- Current-output IC temperature sensors
- Voltage-output IC temperature sensors
- PN junction IC temperature sensors
- Thermocouples
Students can compare different sensor characteristics using DC bridge measurement, a constant-current source, direct IC output measurement, and thermocouple voltage measurement.
The six-hole dry heating well provides positions for sensor experiments under PID temperature control. An external ice-water bath can be used for zero-point calibration.
2.5 TIM Comprehensive Thermal Physics Experiment Apparatus
| Specification | Value |
|---|---|
| Integrated experiment items | 6 |
| Sensor input channels | 4 |
| Timing mode 1 | 0.1–999.9 s |
| Timing accuracy, mode 1 | 0.1 s |
| Timing mode 2 | 0.01–999.99 s |
| Timing accuracy, mode 2 | 0.01 s |
| Timing mode 3 | 0.001–99.999 s |
| Timing accuracy, mode 3 | 0.001 s |
| PID temperature control resolution | 0.1 °C |
| Temperature control accuracy | ±0.2 °C |
| Regulated outputs | 12 V / 1 A and 5 V / 1 A |
The TIM brings six thermal physics experiments together in one apparatus:
- Thermal conductivity of poor conductors
- Thermal conductivity of metals
- Specific heat capacity of metals
- Thermal conductivity of air
- Thermal expansion coefficient of metals
- PID temperature control experiments
Four sensor input channels support different measurement combinations, including temperature-voltage and temperature-current measurements. Three selectable timing modes provide timing ranges from 0.001 s to 999.99 s, with corresponding timing accuracy of 0.001 s, 0.01 s, and 0.1 s.
An external pressure sensor can be supplied by the user for additional experimental work; it is not included as a standard component.
3. Samples and Experimental Configuration
The supplied and replaceable components differ by instrument:
- LB-SMP: Supplied with three lead-tin samples of different compositions. Users can also prepare their own samples.
- LB-EPM: Uses replaceable samples for thermal conductivity experiments.
- TIM: Can be used with an external pressure sensor supplied by the user. The sensor is not included as standard equipment.
These details help laboratories assess the sample and accessory requirements of each instrument before ordering.
4. Physics Teaching Instrument Manufacturer
Nanjing Longbow Scientific & Educational Instrument Co., Ltd. has focused on the research, development, and manufacture of physics teaching experiment instruments since 1999.
Our product range covers mechanics, thermal physics, acoustics, optics, electricity, and new energy experiment equipment.
Our production and technical resources include a factory, a professional R&D team, oscilloscopes, frequency counters, machine tools, program simulation equipment, and programmers. Our intellectual property includes a utility model patent related to a comprehensive thermodynamics experimental apparatus, as well as software copyrights for physics experiment analysis and information management.
Our products have served nearly 1,000 universities, vocational colleges, and secondary schools.
5. Product Consultation and Quotation
We provide one-to-one pre-sales consultation, production progress updates during order processing, and after-sales follow-up.
Contact us with the instrument model and your required quantity to request a quotation. You can also include your destination and any specific configuration requirements so we can discuss the order details with you.
As one of the most professional thermal analysis instruments manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy customized thermal analysis instruments from our factory. If you have any enquiry about pricelist, please feel free to email us.
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