Product Overview

The Pipeline Temperature Sensor NM143 is a high-precision industrial temperature measurement solution designed for direct installation on pipelines and process vessels. Featuring a specially engineered structure, it provides reliable temperature monitoring for industrial processes where stable and accurate measurement is required.

The sensor incorporates imported high-precision sensing components to deliver excellent measurement accuracy, long-term stability, and strong resistance to electromagnetic and radio-frequency interference. Constructed with 304 stainless steel for both the probe and housing, the NM143 offers reliable performance in demanding industrial environments.

Supporting both 4–20 mA analog output and RS485 (Modbus RTU) communication, the NM143 can be integrated into PLCs, DCS, SCADA, and industrial automation systems for continuous temperature monitoring.

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Product Features

• High measurement accuracy up to ±0.2°C
• Long-term stability of ≤0.1°C/year
• Strong resistance to electromagnetic and radio-frequency interference
• Direct threaded installation on pipelines or vessels
• Standard measuring range of -50°C to 200°C
• Customizable measuring range up to -100°C to 500°C
• Available with 4–20 mA or RS485 (Modbus RTU) output
• 304 stainless steel probe and housing
• Corrosion-resistant and high-temperature resistant construction
• IP65 protection rating

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Applications

Industries

• Petroleum
• Chemical Processing
• Natural Gas
• Water Treatment
• Food Processing
• Pharmaceutical Manufacturing
• Environmental Protection
• HVAC and Heating Systems

Typical Applications

• Industrial process pipelines
• Heating pipelines
• Floor heating systems
• Air-conditioning water pipelines
• Storage tanks
• Production process pipelines
• Wastewater treatment systems
• Exhaust gas treatment equipment

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Technical Specifications

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Available Options

Output Signals

• 4–20 mA (Two-wire)
• RS485 (Modbus RTU)

Thread Connections

• G1/2″
• G3/4″
• M16 × 1.5
• M20 × 1.5
• Customized threads available

Probe Lengths

• 50 mm
• 100 mm
• 150 mm
• 200 mm
• Customized lengths available

Probe Diameters

• 6 mm
• 8 mm
• 10 mm
• 12 mm
• Customized diameters available

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Why Choose the Pipeline Temperature Sensor NM143 ?

Accurate pipeline temperature measurement is essential for maintaining process stability, improving equipment efficiency, and supporting industrial automation. The NM143 combines precision sensing technology with durable stainless steel construction to provide reliable temperature monitoring across a wide range of industrial applications.

High Measurement Accuracy

Imported sensing components provide measurement accuracy of up to ±0.2°C, helping maintain dependable temperature monitoring.

Reliable Long-Term Stability

With long-term stability of ≤0.1°C/year, the NM143 is suitable for continuous industrial operation where measurement consistency is important.

Flexible Communication

Choose between 4–20 mA analog output or RS485 (Modbus RTU) digital communication to integrate with existing control and monitoring systems.

Durable Industrial Construction

The probe and housing are manufactured from 304 stainless steel, offering corrosion resistance and durability for demanding industrial environments.

Easy Installation

Multiple threaded process connections, probe lengths, and probe diameters are available, making installation adaptable to different pipeline and vessel configurations.

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Application Case

Temperature Monitoring in Industrial Process Pipelines

Accurate temperature monitoring is critical for maintaining stable process conditions in industrial pipeline systems. The NM143 Pipeline Temperature Sensor can be installed directly into process pipelines using a threaded connection to continuously monitor fluid temperature.

The sensor converts the measured temperature into a 4–20 mA analog signal or RS485 (Modbus RTU) digital signal, allowing data to be transmitted to a PLC, DCS, or SCADA system for real-time monitoring and process control. Operators can use this information to supervise process conditions, optimize system performance, and support automated control strategies.

With its stainless steel construction, IP65 protection, and multiple installation options, the NM143 is suitable for applications including industrial process pipelines, heating systems, HVAC water circuits, food and pharmaceutical production lines, and water treatment facilities.

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Installation Notes

• Select the appropriate thread specification according to the installation point.
• Choose a suitable probe length and diameter based on pipeline size and installation requirements.
• Use the specified power supply according to the selected output type.
• For RS485 communication, shielded twisted-pair cable is recommended, with the shield grounded at one end.
• Avoid installing the sensor where wiring may be exposed to excessive electromagnetic interference.

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Frequently Asked Questions (FAQ)

1. What output signals are available for the NM143?

The NM143 is available with:

• 4–20 mA (Two-wire)
• RS485 (Modbus RTU, Four-wire)

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2. What is the measuring range?

The standard measuring range is -50°C to 200°C, with customizable ranges from -100°C to 500°C.

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3. What is the measurement accuracy?

The accuracy is:

• ±0.2°C (0°C to 100°C)
• ±0.3°C (-50°C to 0°C and 100°C to 200°C)

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4. What materials are used?

Both the probe and housing are manufactured from 304 stainless steel.

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5. Which industries is the NM143 suitable for?

The NM143 is suitable for petroleum, chemical processing, natural gas, water treatment, HVAC, food processing, pharmaceutical manufacturing, and environmental protection applications.

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6. What installation options are available?

The sensor supports threaded installation with standard connections including G1/2″, G3/4″, M16×1.5, and M20×1.5, with customized options available.

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7. Is the probe length customizable?

Yes. Standard probe lengths include 50 mm, 100 mm, 150 mm, and 200 mm, with custom lengths available.

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8. What protection rating does the NM143 have?

The NM143 has an IP65 protection rating for industrial operating environments.

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Optional Services

• Customized measuring ranges
• Customized thread connections
• Customized probe lengths and diameters
• Output signal selection
• Instrument customization according to site requirements
• Installation and commissioning support

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Industries Served

The NM143 Series is suitable for a wide range of industries, including:

• • Petroleum and Petrochemical
  • Natural Gas
  • Machinery Manufacturing
  • Electric Power
  • Metallurgy
  • Building Materials
  • Food Processing
  • Pharmaceutical Manufacturing
  • Agriculture
  • Environmental Protection

Selection Table

Model Code	Meaning
NM143-	Pipeline temperature sensor
T	Temperature measurement type
A	Output signal: 4-20mA
R	Output signal: RS485 (Modbus-RTU)
G1/2	Thread specification: G1/2″
G3/4	Thread specification: G3/4″
M16	Thread specification: M16×1.5
M20	Thread specification: M20×1.5
L50	Probe length: 50mm
L100	Probe length: 100mm
L150	Probe length: 150mm
L200	Probe length: 200mm
D6	Probe diameter: 6mm
D8	Probe diameter: 8mm
D10	Probe diameter: 10mm
D12	Probe diameter: 12mm
C	Customized specification (please specify when ordering)

Example: NM143-T-A-G1/2-L100-D8 indicates NM143 series pipeline temperature sensor, with 4-20mA output signal, G1/2″ thread, 100mm probe length, and 8mm probe diameter.