Pt100 Digital Thermometer

I. Core Parameters

II. Product Features

High Precision & Stability with Reliable Data: Adopts PT100 thermal resistance as the core sensing element, with a measurement accuracy of 0.1% and temperature drift ≤25ppm. It maintains stable performance during long-term use and can provide accurate data support for industrial temperature measurement.

Wide Voltage Adaptation & Flexible Output: Supports 12~35VDC wide voltage power supply, adapting to different power supply systems in industrial sites; outputs HART protocol and 4~20mA standard signal, which can seamlessly connect with PLC, DCS and other control systems to realize remote monitoring and data transmission.

Robust Structure & Environmental Resistance: The housing is made of PA66 nylon material, featuring high temperature resistance, corrosion resistance and impact resistance; the protection tube offers multiple specification options to adapt to different temperature measurement depths and installation scenarios, and can still operate stably in harsh industrial environments.

Flexible Installation & Wide Adaptability: Supports three installation methods (no fixed, threaded, flange), and the length and outer diameter of the protection tube can be selected on demand. It can accurately match the temperature measurement needs of different equipment and pipelines without additional customized adapter components.

Low-Power Design with Long Battery Life: When powered by the built-in lithium battery, it can work continuously for more than 6 months, especially suitable for industrial scenarios where on-site power supply is inconvenient, eliminating the need for frequent power replacement.

On-Site Direct Reading & Easy Operation: Equipped with a wide-screen seven-segment LCD display for on-site direct temperature reading; combined with HART protocol, it supports remote configuration and debugging, making later maintenance and parameter adjustment simple and efficient.

III. Related Component Specifications

Core Temperature Measurement Components

PT100 Thermal Resistance Element: Wound with high-purity platinum wire, it has stable thermoelectric characteristics and high measurement accuracy, and can quickly respond to temperature changes to ensure real-time and accurate temperature measurement data.

Signal Processing Module: Integrates high-precision, low-drift and ultra-low-power integrated circuits, which can effectively filter interference signals, improve data transmission stability, and reduce equipment power consumption.

Display & Control Components

LCD Display: Wide-screen seven-segment design with clear and striking numbers, adapting to reading needs in strong light or dim environments of industrial sites without additional lighting equipment.

HART Communication Module: Supports HART protocol, allowing remote parameter configuration and current output adjustment through HART 475 communicator or computer software to realize remote operation and maintenance.

Installation & Protection Components

Protection Tube: Material options include stainless steel, corrosion-resistant alloy, PTFE sleeve, etc.; outer diameter: φ12/16/20mm, length: 150~3000mm; high mechanical strength, capable of resisting medium erosion and external collisions.

Installation Accessories: Threaded mounting parts, flange components, M3.0×2 mounting screws; standardized specifications, firm installation and good sealing performance to prevent medium leakage.

Power Supply Components

Power Supply Module: Compatible with 12~35VDC DC power supply and built-in lithium battery power supply; the lithium battery capacity meets long-term use needs with a battery life of more than 6 months and convenient switching.

IV. Application Scenarios

With core advantages of "high precision, wide adaptability, easy installation and long battery life", this product is widely used in temperature measurement of various industrial sites, especially suitable for scenarios with inconvenient power supply, mainly including:

Petrochemical Industry: Temperature monitoring of storage tanks, pipelines and reactors; corrosion-resistant protection tubes adapt to chemical corrosive media; wide-voltage power supply and remote output adapt to industrial control systems.

Power Industry: Temperature measurement of boilers, heat exchangers and oil pipelines in power plants; impact-resistant housing and stable performance adapt to the vibration environment of equipment operation; remote monitoring function facilitates operation and maintenance management.

Mechanical Manufacturing Industry: Temperature monitoring of oil temperature in machine tools, gearboxes and hydraulic systems; flexible installation methods adapt to narrow spaces of equipment; lithium battery life meets the needs of scenarios without power supply.

Metallurgical and Steel Industry: Temperature monitoring of rollers and pipelines in cold/hot rolling production lines; high-temperature resistant protection tubes adapt to medium-high temperature working conditions; high-precision measurement ensures process temperature control.

Other Industrial Scenarios: Temperature monitoring of production equipment and pipelines in mining, building materials, pharmaceutical and other industries, especially suitable for temperature measurement needs in remote areas, mobile equipment and other scenarios with inconvenient on-site power supply.

V. Product Advantages

Precision & Stability Compliance with Industrial Standards: 0.1% high precision + low temperature drift design, traceable data, meeting the requirements of industrial measurement and process control. It can replace traditional high-precision temperature measuring instruments, reducing equipment procurement costs.

Remote Operation & Maintenance to Reduce Costs: Supports HART protocol for remote configuration and debugging, enabling parameter adjustment and fault diagnosis without on-site equipment disassembly, reducing operation and maintenance labor and downtime losses.

Wide Adaptability & Strong Compatibility: Wide-voltage power supply, multiple installation methods and multiple protection tube specifications can match the temperature measurement needs of different industries and equipment, with strong versatility, eliminating the need for separate procurement for different scenarios.

Long Battery Life for Power-Free Scenarios: The built-in lithium battery works continuously for more than 6 months, solving the temperature measurement problem in remote areas, mobile equipment and other scenarios with inconvenient power supply, and offering flexible use without restrictions.

Durable Structure & Easy Maintenance: PA66 housing + high-quality protection tube, corrosion-resistant and impact-resistant, with long service life; standardized components have strong versatility, facilitating later replacement of accessories and low maintenance costs.

VI. Frequently Asked Questions

How to configure device parameters through HART protocol?

Answer: ① Install HART communication driver and reg.bat software; ② Double-click to open the main program "HartMaster.exe"; ③ Click "Operation → Cluster communication port" on the interface to select the corresponding COM port; ④ Set parameters as needed through the "HART setup", "Configuration" and "Current adjustment" tabs on the main interface, and save after completion.

What power supply methods does the device support? How to handle insufficient lithium battery life?

Answer: It supports two power supply methods: 12~35VDC DC power supply and built-in lithium battery power supply; when the lithium battery life is insufficient, the same specification lithium battery can be replaced or switched to DC power supply mode. No reconfiguration of parameters is required when switching between the two power supply methods.

How to select the protection tube material according to working conditions?

Answer: ① Ordinary medium (non-corrosive): Choose stainless steel material for economy and practicality; ② Corrosive medium (acids, alkalis, etc.): Choose corrosion-resistant alloy or PTFE sleeve to prevent corrosion damage to the protection tube; ③ High-temperature working conditions: Choose high-temperature resistant alloy material to ensure the protection tube does not soften or deform under high temperature.

How to select the protection tube length during installation?

Answer: The length of the protection tube should be determined according to the temperature measurement depth. Generally, it is recommended that the insertion length is not less than 10~15 times the diameter of the protection tube, and ensure the probe is completely immersed in the measured medium (not air layer) to avoid temperature measurement errors caused by insufficient insertion depth; 150~500mm can be selected for regular scenarios, and 1000~3000mm for deep pipelines or equipment.

How to troubleshoot abnormal 4~20mA output signals?

Answer: ① Check if the power supply voltage is within the range of 12~35VDC; excessively low voltage will cause abnormal signals; ② Verify if the load resistance is 250Ω or 500Ω; mismatched load will affect signal output; ③ Check the device parameter configuration through HART communication software to confirm whether the corresponding relationship between range and output is correct; ④ Check if the wiring is firm and if the 3-wire system is reversed; poor contact or wrong wiring will cause signal distortion.

You can connect the HART 475 and the HART modem as follows:

1. Install the HART communication driver;

2. Install the software : reg.bat ;

3. Double click "HartMaster.exe" to the main program;

4. Click "Operate -> Cluster communication port" in the desk to choose the proper COM port;

5. "HART setup","Configuration" and "Current adjustment" tabs are shown in the main screen, please set as needed.

● 3-wire system is regularly applied.

● Single resistance wire type is the most common type.

● Installation methods: no mounting, thread mounting, and flange mounting.

● The outer diameter parameters are φ12,16,20 for the protection tube.

● Material: stainless steel, corrosion-resistant alloy, sleeved PTFE, etc.

● The minimum length is usually not shorter than 150mm, the maximum length usually doesn't exceed 3000mm.

Manual Welding

Automatic Welding

Insulation Testing

Laser Marking

Warehouse Managing

Thermocouple Assemble

Vacuum Leak Detection

Surface Polishing

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