Abb KTI HE372276

1. Product Overview

The ABB KTI HE372276 is a high-precision industrial temperature sensor belonging to the Pt100 platinum resistance thermometer (PRT) series. It operates on the physical principle that the resistance value of metal conductors changes linearly with temperature variation to achieve accurate temperature detection. Featuring high measurement accuracy and excellent operational stability, this sensor is widely applicable for precise temperature monitoring in diverse industrial scenarios.

2. Main Technical Parameters

Parameter Item	Technical Specifications
Scale Number	Pt100 (Platinum Resistance Thermometer)
Temperature Measurement Range	-50℃～400℃, -200℃～850℃ (varies by structure type)
Accuracy Grade	Class A: ±(0.15+0.002|t|) ℃
Resistance Value at 0℃	100Ω (Class A)
Insulation Resistance	≥100 MΩ (at 15℃, relative humidity ≤80%)
Temperature Cycle Stability	Class A: ≤±0.15℃; Class B: ≤±0.30℃
Wiring Mode	2-wire / 3-wire / 4-wire (optional)

3. Product Features

• High-precision Measurement: Adopts professional Pt100 platinum temperature-sensing elements, delivering superior temperature measurement accuracy and long-term working stability.
• Compact Structure: Miniature and streamlined outline design, which is flexible for installation in narrow and confined spaces.
• Wide Temperature Adaptation Range: Supports temperature detection ranging from -50℃ to 850℃, covering most conventional industrial temperature scenarios.
• Excellent Anti-interference Capability: Equipped with 3-wire or 4-wire wiring modes, which effectively eliminate measurement errors caused by wire resistance and improve detection accuracy.
• Superior Durability: The protective sheath is made of 316 stainless steel, featuring outstanding corrosion resistance, abrasion resistance and long service life.

4. Structure and Composition

4.1 Typical Components

• Temperature-sensing Element: Pt100 platinum resistance thermometer with ceramic or thin-film packaging
• Protective Tube: 316 stainless steel material, with a common outer diameter of 6mm
• Terminal Block: Four terminals (I+, I-, V+, V-) arranged inside the junction box
• Connecting Wire: Insulated wire with customizable length
• Mounting Accessories: Threaded connectors, compression glands, waterproof sealing parts and other matching components

4.2 Structural Characteristics

• The temperature measuring end adopts a spring compression structure, which ensures tight and stable contact with the measured object for accurate temperature collection.
• Armored structure effectively protects the internal temperature-sensing element, significantly enhancing the overall mechanical strength and shock resistance of the sensor.

5. Application Fields

This Pt100 temperature sensor is widely used for precise temperature detection and monitoring in various industrial fields, with typical application scenarios as follows:

Application Industry	Typical Applications
Industrial Automation	Temperature monitoring of motor bearing bushes and mechanical component temperature detection
Power Industry	Temperature monitoring of power plant steam turbines and generator windings
Petrochemical Industry	Temperature measurement of industrial pipelines, reaction kettles and storage vessels
Plastic Machinery	Temperature detection of molds and extruder equipment
Wind Power Industry	Bearing temperature monitoring of wind power generators
Others	Laboratory testing, food industry, HVAC systems and other scenarios

6. Installation Requirements

6.1 Installation Position Selection

• Select positions with representative temperature and humidity changes to ensure authentic and effective measurement data.
• Keep away from strong magnetic field interference areas and positions with frequent mechanical vibration.
• Avoid temperature dead zones to guarantee the accuracy of temperature detection.

6.2 Installation Methods

• Support threaded connection installation (specifications include M27×2, NPT1/4, etc.).
• Vertical installation is recommended to prevent structural deformation under high-temperature conditions.
• For positions with water flow impact, install the sensor at a 30°-45° inclined angle.
• Auxiliary support brackets are required for installation in special harsh environments for protection.

6.3 Insertion Depth Requirements

• For soil temperature measurement, the insertion depth shall be 8 to 10 times the diameter of the protective tube.
• Ensure sufficient insertion depth during industrial pipeline installation to avoid inaccurate measurement caused by insufficient contact.

6.4 Electrical Connection Specifications

• Arrange the outlet hole of the junction box downward to prevent moisture and water vapor from entering the interior.
• Complete wiring in strict accordance with the official manual to ensure correct and reliable electrical connection.

6.5 Protection Requirements

• Pay attention to daily waterproof and dustproof protection of the sensor.
• Fully consider the thermal deformation of the protective tube when working in long-term high-temperature environments.

7. Maintenance and Upkeep

7.1 Regular Inspection

• Check the connecting wires regularly for looseness, damage or aging.
• Verify that the protective tube is free from deformation, corrosion and abrasion.
• Inspect the sealing performance of the junction box to ensure good tightness.

7.2 Cleaning and Maintenance

• Clean the sensor probe with a soft damp cloth regularly.
• Do not use corrosive chemical cleaners to avoid damaging the probe surface and internal components.
• Keep the probe surface clean and free of oil, dust and other attachments.

7.3 Calibration Cycle

• Annual professional calibration and adjustment is recommended to maintain measurement accuracy.
• Contact the manufacturer for official standardized calibration services.

7.4 Service Life

• The service life of the sensor is 5-10 years under standard normal working conditions.
• The service life will be shortened accordingly when operating in high-temperature, corrosive and other harsh environments.

7.5 Fault Troubleshooting

• Abnormal Resistance Value: Check whether the internal temperature-sensing element is damaged or failed.
• Decreased Insulation Resistance: Inspect the sensor for water ingress, moisture or surface contamination.
• Measurement Drift: Perform professional recalibration to restore detection accuracy.

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