When is CO₂ (R744) the right refrigerant choice?

Carbon dioxide (R744) is a natural refrigerant known for its high cooling capacity and very low GWP. It is particularly suitable for indoor installations, applications requiring temperatures below 0 °C, and systems with a central cooling water supply. R744 is often used in high-performance cooling applications where precise temperature control and compact system design are required.

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Home » Instruments » Integral IN 2040 XTW

Process thermostat with integrated cooling system

Lauda

Integral IN 2040 XTW

Operate your Integral process thermostat simply via a modern TFT display directly on the device or optionally via an intuitive operating unit with touch display and extended range of functions.

Min. working temperature -45 °C

Max. working temperature 200 °C

Utilizes natural refrigerants CO₂

Integral IN 2040 XTW

Process thermostat with integrated cooling

What is the Integral IN 2040 XTW?

The Integral IN 2040 XTW is a process thermostat with an integrated cooling system that enables precise temperature control in external circuits. It efficiently manages heat transfer liquids with stored properties and supports both flammable and non-flammable liquids.

The system utilizes natural refrigerants like CO₂ for environmentally friendly operation.

How does the cooling system work?

The process thermostat comes with an integrated cooling system that allows dynamic temperature control in external circuits. It efficiently manages heat transfer liquids with stored properties.

SmartCool System: offers energy-efficient digital cooling control with a speed-controlled compressor for optimal savings
Natural Refrigerants CO₂: environmentally friendly operation

Temperature range and performance

Minimum working temperature: -45 °C
Maximum working temperature: 200 °C
Temperature stability: 0.05 ± K
Maximum pump flow pressure 120 L/min

Power and performance

PowerAdapt System: maximizes the use of available power, ensuring high performance
LAUDA Vario Pump: offers 8 selectable output levels or flow pressure control, providing precise and reliable operation for various applications
Quick-stop function: controlled via black push-button or remote release contacts

Safety features

Low-level and adjustable over-temperature protection
Acoustic alarm for fault indication
Remote fault indication via floating contact

Interfaces

USB and Ethernet interfaces as standard

Ports for external Pt100 sensors (1 standard, 1 optional via module)
Programmable with up to 150 temperature/time segments, separable into 5 programs
SelfCheck Assistant for system diagnostics

Specifications

Minimum working temperature	−45 °C
Maximum working temperature	200 °C
Temperature stability	± 0.05 K
Cooling technology	SmartCool (speed‑controlled compressor)
Refrigerant type	Natural CO₂ (R‑744)
Maximum pump flow	120 L/min
Pump type	LAUDA Vario pump (8 selectable levels)
Connectivity / interfaces	USB, Ethernet, Pt100 (standard)
Safety certification	Low‑level and adjustable over‑temperature protection Acoustic alarm for fault indication

Questions about your application?

Our Xperts are happy to answer your questions and provide additional information about this instrument and its applications.

Frequently asked questions

Natural refrigerants deliver strong cooling performance with minimal environmental impact. They help lower CO₂ footprints, reduce energy consumption, and support long-term sustainability strategies in cooling technology.

Carbon dioxide (R744) is a natural refrigerant known for its high cooling capacity and very low GWP. It is particularly suitable for:

Indoor installations
Applications requiring temperatures below 0 °C
Systems with a central cooling water supply

R744 is often used in high-performance cooling applications where precise temperature control and compact system design are required.

Propane (R290) is another natural refrigerant that offers high energy efficiency and strong cooling performance. It is suitable for:

Indoor and outdoor installations
Air-cooled and water-cooled systems
Applications operating above 0 °C

R290 is widely adopted as a replacement for fluorinated refrigerants due to its low GWP and favorable thermodynamic properties. Modern systems integrate safety measures to allow reliable use of propane even with larger refrigerant charges, making it a cost-effective and future-proof solution in many laboratory and industrial environments.

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Integral IN 2040 XTW

Integral IN 2040 XTW

Process thermostat with integrated cooling