Product Overview

The Temperature Transmitter NM140 is a universal industrial temperature measurement solution designed for reliable temperature monitoring across a wide range of industrial applications. The transmitter supports PT100 resistance temperature detectors (RTDs) or thermocouple sensors, converting temperature signals into a standard 4–20 mA analog output for seamless integration with industrial automation systems.

Designed with an all-metal die-cast aluminum housing, the NM140 provides excellent durability for demanding industrial environments. The rotatable electronic head allows users to adjust the cable outlet direction according to installation requirements, improving wiring flexibility and maintenance convenience.

With a user-definable measuring range from -200°C to 1800°C, optional HART communication, optional LED/LCD digital display, and multiple process connection options, the NM140 is suitable for temperature measurement in water treatment, machinery, oil & gas, steel production, cooling systems, and other industrial processes.

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Product Features

• Universal industrial temperature transmitter
• Supports PT100 Class A or thermocouple temperature sensors
• User-definable measuring range from -200°C to 1800°C
• Standard 4–20 mA two-wire output
• Optional HART communication
• Optional 4-digit LED or LCD digital display
• Rotatable electronic head for flexible cable outlet direction
• Multiple process connection options
• All-metal die-cast aluminum housing
• High measurement accuracy
• Suitable for industrial automation systems

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Applications

Industries

• Oil & Gas
• Petrochemical
• Iron & Steel
• Machinery Manufacturing
• Water Treatment
• Glass Manufacturing
• Power Generation

Typical Applications

• Industrial process temperature monitoring
• Circulating water systems
• Cooling water systems
• Equipment temperature measurement
• Process automation
• Industrial control systems

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Technical Specifications

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Available Options

Sensor Options

• PT100 Class A
• PT1000 (Optional)
• Thermocouple

Communication Options

• Standard 4–20 mA
• Optional HART

Display Options

• LED Digital Display
• LCD Digital Display

Process Connections

• Multiple process connection options available

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Why Choose the Temperature Transmitter NM140 ?

Industrial temperature measurement requires stable performance, flexible installation, and reliable signal transmission. The NM140 integrates these capabilities into a durable transmitter suitable for a wide variety of industrial applications.

Wide Measurement Range

The measuring range can be configured anywhere between -200°C and 1800°C, allowing the transmitter to adapt to different industrial temperature monitoring requirements.

Flexible Sensor Compatibility

The NM140 supports both PT100 resistance temperature detectors and thermocouple sensors, providing flexibility for various measurement applications.

Easy System Integration

The standard 4–20 mA output and optional HART communication enable straightforward integration with PLC, DCS, and SCADA systems.

Flexible Installation

The rotatable electronic head allows installers to adjust the cable outlet direction after installation, making wiring more convenient in confined industrial environments.

Durable Industrial Construction

The die-cast aluminum housing, 316 stainless steel wetted parts, and IP65 protection provide dependable performance in demanding industrial conditions.

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Application Case

Temperature Monitoring in Industrial Cooling Water Systems

In industrial cooling water and circulating water systems, accurate temperature measurement is essential for maintaining stable process operation and protecting equipment. The NM140 Temperature Transmitter can be installed on pipelines or process equipment using a PT100 or thermocouple sensor to continuously monitor operating temperatures.

The measured temperature is converted into a 4–20 mA signal and transmitted to PLC, DCS, or SCADA systems for centralized monitoring and control. Where required, HART communication can be selected for enhanced device management. The rotatable electronic head simplifies cable routing during installation, while the optional LED or LCD display enables local temperature observation.

This configuration makes the NM140 suitable for water treatment plants, steel production, machinery manufacturing, oil and gas facilities, glass manufacturing, and other industrial process applications.

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Installation Notes

• Select the appropriate PT100 or thermocouple sensor based on application requirements.
• Configure the required measuring range before commissioning.
• Supply the transmitter with 10–30 VDC power.
• Wire the device according to the terminal wiring diagram.
• Adjust the electronic head orientation to obtain the preferred cable outlet direction.
• Select the appropriate process connection for the installation location.

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Frequently Asked Questions (FAQ)

1. What temperature sensors does the NM140 support?

The NM140 supports PT100 Class A and thermocouple sensors. PT1000 is available as an option.

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2. What is the measuring range?

The measuring range is user-definable between -200°C and 1800°C.

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3. What output signal does the transmitter provide?

The standard output is 4–20 mA (2-wire). HART communication is available as an option.

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4. Can the cable outlet direction be adjusted?

Yes. The electronic head is rotatable, allowing users to adjust the cable outlet direction after installation.

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5. Is a digital display available?

Yes. Optional 4-digit LED or LCD digital displays are available.

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6. What materials are used?

• Housing: Die-cast Aluminum
• Wetted Parts: 316 Stainless Steel

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7. What protection rating does the transmitter provide?

The NM140 has an IP65 protection rating.

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8. Which industries is the NM140 suitable for?

It is suitable for oil & gas, petrochemical, iron & steel, machinery manufacturing, water treatment, glass manufacturing, circulating water systems, cooling systems, and other industrial temperature measurement applications.

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Optional Services

• Customized measuring ranges
• Optional HART communication
• Optional LED/LCD display
• Multiple process connection configurations
• Instrument customization based on application requirements
• Installation and commissioning support

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Industries Served

The NM140 Series is widely used in:

• Petroleum and Petrochemical
• Oil & Gas
• Iron & Steel
• Machinery Manufacturing
• Water Treatment
• Electric Power
• Glass Manufacturing
• Food Processing
• Pharmaceutical Manufacturing
• Environmental Protection

Selection Table

Model/Code	Detailed Description
NM140-	NM140 temperature sensor
NM141-	NM141 temperature sensor
NM142-	NM142 temperature sensor
C2080	Measurement range: -20…80°C
C0100	Measurement range: 0…100°C
C20100	Measurement range: -20…100°C (with pulse)
C20150	Measurement range: -20…150°C (with pulse)
C20250	Measurement range: -20…250°C (with pulse)
C50100	Measurement range: -50…100°C (with pulse)
C50250	Measurement range: -50…250°C (with pulse)
PT100	3-wire PT100
PT1000	3-wire PT1000
K	K-type thermocouple
S	S-type thermocouple
J (NM140 Series)	J-type thermocouple
–	Linear signal
A	4..20mA
AH	4..20mA + HART output
G12M	G1/2 external thread
G01M	G1 external thread
N12M	1/2’NPT external thread
NO1M	1’NPT external thread
M27M	M27*2 external thread
0	No neck tube, not required for temperatures ≤100°C
50	Neck tube length L1: 50=50mm (0≤L1≤500mm)
100	Probe length L2: 100=100mm (25≤L2≤2500mm)
D06	Probe diameter: D06=6mm (length L≤1000mm)
D08	D08=8mm
D12	D12=12mm
D15	D15=15mm