Temperature is a physical property of matter that expresses how hot and cold it is.

How is temperature measured?

Temperature is measured with one or more kinds of temperature sensors. There are several available on the market today: <ul> <li>Thermocouple sensors</li> <li>RTD sensors (resistance thermometer)</li> <li>Thermistor sensors</li> <li>Infrared temperature sensors</li> </ul>

Do Dewesoft temperature loggers support any kind of temperature sensor?

Yes. Dewesoft temperature data loggers offer amplifiers for connection of all types of temperature sensors - thermocouples, RTDs, thermistors and infrared temperature sensors.

What kind of temperature scales do we know?

The most common scales are the Celsius scale (formerly called centigrade, denoted °C), the Fahrenheit scale (denoted °F), and the Kelvin scale (denoted K), the last of which is predominantly used for scientific purposes by conventions of the International System of Units (SI).

What is the lowest theoretical temperature?

The lowest theoretical temperature is absolute zero, at which no more thermal energy can be extracted from a body. Experimentally, it can only be approached very closely, but not reached, which is recognized in the third law of thermodynamics.

Is software included with Dewesoft temperature loggers?

Dewesoft temperature loggers include free award-winning Dewesoft X data acquisition software. Software is intuitive and easy to use. It offers advanced storing, triggering, and alarm capabilities as well as several data visualization widgets and includes an extensive math library for data analysis. Data can furtherly be printed with built-in reporting tools or exported into several standard file formats like CSV, Excel, Matlab, FlexPro, Diadem, UNV, etc.

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Temperature RecordingThermocouple, RTD, and thermistor data recording

Our temperature data loggers (data recorders) offer accurate temperature logging from any temperature sensor type such as thermocouples, RTDs, and thermistors. Our temperature loggers are modular by design and can expand from a single channel configuration to thousands of temperature measurement points. The DAQ systems are simple to set up and use with included award-winning DewesoftX data acquisition software. Software is included for free and comes with life-time free updates. The systems offer an industry-leading 7-year warranty.

Thermocouple

RTD

Resistance

Voltage

IEPE

Charge

Strain and Stress

LVDT

Sound

Video

High-speed video

EtherCAT

Ethernet

USB 2.0

CAN bus

XCP/CCP

IP67

Shock rating 100g

Temperature Recording highlights

Thermocouple Data Loggers

Our thermocouple loggers offer support for any thermocouple sensor type - C, E, J, K, N, T, and others.

RTD Data Loggers

Our RTD loggers offer support for any type and model of RTD sensors (Resistance Thermometer Detector) - Pt100, Pt200, Pt500, Pt1000, Pt200.

Thermistor Data Loggers

Support for data logging from thermistor sensors is also available.

Infrared Thermal Camera Support

In addition to standard temperature sensors we also offer support for temperature measurement using infrared thermal cameras from OPTRIS. Completely synchronized with analog temperature sensors.

Multi-channel Temperature Data Logger

Temperature loggers are available in single-channel configurations or in multi-channel temperature logger configurations, spanning hundreds and even thousands of temperature channels.

USB, EtherCAT, or Standalone

Our loggers can be connected to any host PC via standard USB or Ethernet interfaces. They can also work as EtherCAT slave devices and can be connected to any EtherCAT master. Standalone battery-powered temperature loggers are also available for stand-alone operation.

Additional Data Sources

Our temperature data logger can easily be extended with additional data sources and sensors like IEPE vibration, voltage, current, strain gauge, LVDT, charge, CAN bus, video, GPS, XCP, and many others.

Long-term Temperature Monitoring

For long-term temperature data recording we offer storage into local or cloud Dewesoft Historian cloud database. The web client is available for easy access and visualization of data while integration into SCADA, CMMS, or ERP systems is possible via standard OPC UA protocol.

Trending and Analytics

Historical data can always be recalled and loaded from the Historian database and used for trend analysis as well as for in-depth analysis and root cause identification.

Software included

Every Dewesoft data acquisition system is bundled with award-winning DewesoftX data acquisition software. The software is easy to use but very rich and deep in functionality. All software updates are free forever with no hidden licensing or yearly maintenance fees.

Dewesoft quality and 7-year warranty

Enjoy our industry-leading 7-year warranty. Our data acquisition systems are made in Europe, utilizing only the highest build quality standards. We offer free and customer-focused technical support. Your investment into the Dewesoft solutions is protected for years ahead.

Precise Temperature Data Logging and Recording

Did you know that temperature is the most often recorded physical measurement? Knowing the temperature is critical for the correct operation of everything from the human body to an automobile engine, and everything in between. Temperature can affect the durability of your products and can frequently be the reason for mechanical and other types of defects. That is why precise temperature measurement is crucial for any R&D testing application as well as for long-term monitoring purposes in industrial and production environments.

There are several sensor types used for measuring temperature. The most common and popular sensors for temperature measurement today include thermocouples, RTDs, thermistors, and even infra-red temperature detectors.

Dewesoft temperature data loggers offer support for all of them and we even offer temperature loggers with combined sensor type compatibility.

What is a Thermocouple Sensor?

The most popular temperature sensor overall due to its relatively low cost and reliability is the thermocouple. Thermocouples are based on the Seebeck effect, which shows that when a pair of dissimilar metals in contact with each other at each end are subjected to changes in temperature, they create a small voltage potential.

Pairing different kinds of metals give us a variety of measuring ranges. These are called “types.” A very popular one is thermocouple Type K, which pairs chromel and alumel, resulting in a wide measuring range of −200 °C to +1350 °C (−330 °F to +2460 °F). Other popular types are J, T, E, R, S, B, N, and C.

The output from a thermocouple must be linearized by the measuring system. It must also be referenced using the Cold Junction Compensation (CJC). The “hot junction” is the measuring end of the thermocouple assembly, and the other end is the cold junction, where the reference is typically located.

Thermocouple Measuring Challenges and Solutions

Due to the very small microvolt and millivolt output of these sensors, electrical noise and interference can occur when the measuring system is not isolated. Dewesoft modules tackle this head-on with powerful isolation. There is no better way to reject common-mode voltages that get into the signal chain.

Another way to reduce noise is to place the measuring system as close to the sensor as possible. Avoiding long signal lines is a proven strategy for maximizing signal fidelity and reducing costs. Look at our SIRIUS and KRYPTON modular data acquisition instruments for best-in-breed solutions here.

An inadequate CJC results in wrong readings. This assembly needs to be protected from ambient temperature changes to provide a solid reference. We use a separate CJC chip for each channel in our CJCs, which are milled from a solid block of aluminum, and precisely assembled to achieve the best possible reference.

Learn more about thermocouples.

Thermocouple Data Loggers

We offer a list of different thermocouple data loggers with universal thermocouple amplifiers. These thermocouple signal conditioners can connect any type of thermocouple sensors like thermocouple types K, J, C, T, E, and others.

Available Thermocouple Logger Modules

Module	Description
KRYPTON product family
KRYPTONi-1xTH-HV	Single-channel thermocouple module with high galvanic isolation.
KRYPTONi-8xTH	8 channel isolated universal thermocouple module.
KRYPTONi-16xTH	16 channel isolated universal thermocouple module.
IOLITE product family
IOLITEdi-8xTH	8 channel universal thermocouple isolated IOLITE distributable module.
IOLITEi-8xTH	8 channel universal thermocouple isolated IOLITE rack system module.
DSI adapters
DSI-TH-x	With DSI adapters you can convert any amplifier with a DB9 connector into a thermocouple signal conditioner.

KRYPTON Single-Channel High Voltage Thermocouple Data Logger

The KRYPTONi-1xTH-HV is a single-channel thermocouple module from the KRYPTON ONE product family. It features high isolation and IP6 waterproof protection.

KRYPTONi-1xTH-HV offers the following specs:

Support for thermocouple type K
High galvanic isolation - CAT II 1000V.
Thermocouple temperature ranges: -270℃ - 1372℃
24 Bit delta-sigma ADC converter
The sampling rate of 100 s/sec
Input connector: Lemo Redel 2P
EtherCAT I/O on Lemo 1T8f/1T8m
IP67 environment protection - 100G shockproof, dustproof, and waterproof
DewesoftX software included

See the complete technical specifications.

KRYPTON 8 and 16 Channel Thermocouple Dataloggers

The KRYPTONi-8xTH and KRYPTONi-16xTH are 8 and 16 channel thermocouple data loggers from the KRYPTON DAQ product family. They feature IP67 protection, ready for a harsh environment and field testing.

KRYPTON thermocouple dataloggers offer the following specs:

8 or 16 channel isolated universal thermocouple and voltage module
Input modes: Voltage and Thermocouple
Thermocouple types: K, J, T, R, S, N, E, C, U, B
Measurement ranges: full range of each thermocouple type
Voltage ranges: ±1 V, 100 mV
ADC converter: 24 Bit delta-sigma
Sampling rate: 100s/sec
Input connector: Mini TC
EtherCAT I/O on Lemo 1T8f/1T8m
IP67 environment protection - 100G shockproof, dustproof, and waterproof
DewesoftX software included

See the complete technical specifications.

IOLITE 8-channel Thermocouple Dataloggers

These two multichannel thermocouple modules are from the IOLITE line of data acquisition systems. The IOLITEdi-8xTH is a standalone distributed thermocouple module in its own IOLITEd chassis for distributed measurement. IOLITEi-8xTH module fits into any of the available IOLITE racks - IOLITE R12, IOLITE R8, or IOLITE LX.

Both modules have the following specifications:

8 channel isolated universal thermocouple and voltage module
Input modes: Voltage and Thermocouple
Thermocouple types: K, J, T, R, S, N, E, C, U, B
Thermocouple ranges: full range of each thermocouple type
Voltage ranges: ±1 V, 100 mV.
A/D converter: 24 Bit delta-sigma
Sampling rate: 100 s/sec
Input connector: Mini TC
EtherCAT I/O on 2xRJ45 connectors
DewesoftX software included

See the complete IOLITE technical specifications.
See the complete IOLITEd technical specifications.

DSI-TH-x Thermocouple Adapters

DSI-TH-x thermocouple adapters are used for the thermocouple sensor connection. The adapter features high accuracy cold junction reference measurement. A 1-meter thermocouple cable is included with a mini TC connector.

DSI-TH-x adapter will change any Dewesoft DAQ amplifier into a thermocouple signal conditioner and is compatible with SIRIUS, SIRIUS XHS, KRYPTON, IOLITE, DEWE-43, and MINITAURs amplifiers with DB9 connector.

DSI-TH adapters are available for these thermocouple types:

DSI-TH-C - thermocouple type C (W, W3, and W5)
DSI-TH-J - thermocouple type J
DSI-TH-K - thermocouple type K
DSI-TH-T - thermocouple type T

See complete DSI-TH-x technical specifications.

What is the RTD - Resistance Thermometer Detector?

Compared to the thermocouple, the RTD (Resistance Temperature Detector) is generally more linear and drift-free within its measuring range. However, due to their platinum content and more complex construction, they are more expensive than thermocouples. You will typically find RTDs used in applications such as pharmaceuticals, where precise temperature measurements must be made over a long time. They don’t range much above 600° C, however, so thermocouples are a better choice for high temperature “contact” applications.

Unlike the thermocouple which is self-powered, the RTD is powered by the measuring system. The RTD measures temperature via electrical resistance which changes in a highly linear fashion with respect to temperature. Although at its core an RTD is a 2-wire sensor,
the addition of one or even two more wires (3 and 4-wire hookup) provides better compensation against self-heating and lead wire resistance and is recommended. Dewesoft signal conditioners provide 2, 3, and 4 wire hook-up possibilities.

The PT100 (“PT” = platinum and “100” = 100Ω at 0°C) and PT1000 are the most popular variants of the RTD, however, we also support Pt200, Pt500, and Pt2000 sensors.

RTD Measuring Challenges and Solutions

As mentioned, their hook-up is more complex than a thermocouple, however, Dewesoft DSI-RTD adapters make it easy and convenient to connect your sensors to our measuring systems.

Noise is always a consideration for any sensor with small output, but our high isolation inputs are the best prevention imaginable.

Learn more about RTD sensors.

The RTD Data Loggers

We offer a list of different RTD dataloggers with universal RTD amplifiers. We can connect any type of RTD sensor to these RTD signal conditioners.

Available RTD Logger Modules

Module	Description
KRYPTON product family
KRYPTONi-8xRTD	8 channel isolated universal RTD module.
IOLITE product family
IOLITEdi-8xRTD	8 channel universal RTD isolated IOLITE distributable module.
IOLITEi-8xRTD	8 channel universal RTD isolated IOLITE rack system module.
SIRIUS product family
SIRIUS STG	8-channel DualCore SIRIUS STG type amplifiers.
SIRIUS HS STGS	8-channel High-speed SIRIUS STG type amplifiers.
DSI adapters
DSI-TH-x	With DSI adapters you can convert any amplifier with a DB9 connector into a thermocouple signal conditioner.

KRYPTON 8-channel RTD Data Logger

KRYPTONi-8xRTD is an 8 channel universal RTD data logger with IP67 waterproof protection, ready for the harshest environment and field testing applications.

It features the following specs:

8 channel isolated module for RTD Temperature, Resistance, Voltage
Input modes: Voltage, Resistance, Thermistor
Voltage ranges: ±1 V, 100 mV
A/D converter: 24 Bit delta-sigma
Sampling rate: 100 s/sec
Input connector: Lemo 0B6f
EtherCAT I/O on Lemo 1T8f/1T8m
IP67 environment protection - 100G shockproof, dustproof, and waterproof
DewesoftX software included

See the complete technical specifications.

IOLITE 8-channel RTD Data Loggers

These two dedicated RTD temperature modules for RTD sensors are part of the IOLITE data acquisition family. The IOLITEdi-8xTH is a standalone distributed module in its own IOLITEd chassis for distributed measurement. IOLITEi-8xRTD module fits into any of the available IOLITE racks - IOLITE R12, IOLITE R8, or IOLITE LX.

Both modules feature the following specifications:

8 channel isolated measurement module for RTD Temperature, Resistance, Voltage
Input modes: Voltage, Resistance, Thermistor
Voltage ranges: ±1 V, 100 mV
A/D converter: 24 Bit delta-sigma
Sampling rate: 100 s/sec
Input connector: Lemo 0B6f
Only EtherCAT I/O on 2xRJ45
DewesoftX software included

See the complete IOLITE technical specifications.
See the complete IOLITEd technical specifications.

SIRIUS STG and SIRIUS HS STGS Type RTD Amplifiers

SIRIUS data acquisition systems come in all sorts of form factors and channel configurations. Standalone DAQ systems with up to 128 channels in single chassis are available.

SIRIUS DualCoreADC STG amplifiers and SIRIUS High-speed STGS type amplifiers can accept RTD sensors natively.

See complete SIRIUS technical specifications.

The DSI-RTD Adapters

DSI-RTD is a universal adapter for RTD sensors. Two, three, and four-wire connection methods are supported. 5-pin Binder 710 series connector with included Binder cable connector.

DSI-RTD adapter will change any Dewesoft DAQ amplifier into the RTD signal conditioner and is compatible with SIRIUS, SIRIUS XHS, KRYPTON, IOLITE, DEWE-43, and MINITAURs amplifiers with DB9 connector.

Supported RTD types are:

Pt100
Pt200
Pt500
Pt1000
Pt2000

See complete DSI-RTD technical specifications.

Temperature and Humidity Data Loggers

The nice thing about our temperature data loggers is that you can easily extend them and record any other signal and sensors.

In temperature measurement applications it is quite often required to measure humidity as well. With our data loggers that is no problem. We have signal conditioners for all kinds of humidity sensors, so connecting external sensors and synchronizing them with temperature is as easy as riding a bike.

Dewesoft temperature data loggers thermocouple and RTD

Infrared Thermal Camera Temperature Measurement

DewesoftX data acquisition software also brings support for OPTRIS infrared thermal imaging cameras.

Video from OPTRIS cameras is software synchronized with analog and other data sources down to ~10 ms accuracy.

Smart visual control for OPTRIS thermal video allows for easy calibration and temperature reading. That is performed simply by pointing a mouse cursor or taping with a finger over the camera screen.

Standalone Temperature Recorder or Connected to a Host Computer

Our temperature data acquisition systems can be configured to operate in complete stand-alone mode. These DAQ systems include a built-in signal conditioning, data storage, processing computer, optional LCD display, and optional integrated Li-Ion battery power supply.

On the other hand, we offer systems that can be connected to any host computer running DewesoftX data acquisition software via standard data interfaces:

USB: Connect the signal conditioning module directly to your PC computer or laptop via the standard USB data interface.
Ethernet: Connect the signal conditioning module directly to your PC computer or laptop via a standard Ethernet interface using RJ45 connectors.
EtherCAT: Additionally our EtherCAT temperature signal conditioning modules can be connected to any 3rd party EtherCAT master.

Single-channel or Multi-channel Temperature Loggers

Temperature data loggers are offered in single-channel or multi-channel configurations spanning into temperature recording systems capable of acquiring several hundred or even thousands of temperature channels simultaneously.

Systems can be configured with any number of input channels for any type of temperature sensor. We can combine thermocouple and RTD signal conditioners in a single system.

Temperature DAQ systems are modular by design and the channel count can grow at any time. No additional software upgrade or cost is associated with channel extension.

Rugged Temperature Data Loggers for Harsh Environments

We offer rugged KRYPTON thermocouple and RTD temperature loggers for recording temperature in harsh environments. With IP67 degree of environmental protection these temperature data recorders offer:

Temperature protection: -40 to 85°C operating temperature.
Waterproof protection: immersion, up to 1 meter (3 ft 3 in) depth for 30 minutes.
Dust protection: dust-tight - no ingress of dust, complete protection against contact (dust-tight).
Shock protection: SIST EN 60068-2-27:2009, 100 g, 6 ms, half-sine, 100x pos./neg in each axis, 600x total.
Vibration protection: Random vibration - MIL-STD-202G Method 214A, test condition II-D. Profile break points: 50 Hz @ 0.025 g²/Hz, 100 Hz @ 0.1 g²/Hz, 2000 Hz @ 0.1 g²/Hz, Profile RMS / Peak = 13.9 g / 41.7 g, 8 hrs in each axis, 24 hrs total

Temperature Data Recording Software Included

All our temperature data loggers come included with the award-winning DewesoftX data acquisition software. The software offers an intuitive user interface and is very easy to use.

The software offers several storing, triggering, and alarm options. Unlimited mathematical channels like formulas, statistics, filters, and many others can be defined. Several pre-built visual displays are available for data visualization - recorders, digital displays, analog displays, tables.

DewesoftX built-in tools for report generation tools enable easy creation of PDF and Word reports. Data exporting tool supports exporting data to several industry-standard data formats.

Triggers and Alarms

Our software allows setting up unlimited triggers, alarms, and notifications. You can enable four different storage options that relate to the basic sampling rate. Any of the four options can be used to store data:

Always fast: data will always be stored at full sampling speed, as defined by the dynamic acquisition rate.
Always slow: data will be always stored at a reduced sampling speed as defined by the static/reduced rate.
Fast on the trigger: data will be stored at full sampling speed defined by the dynamic acquisition rate once the trigger condition occurs.
Fast on trigger slow otherwise: data will be stored at full sampling speed defined by the dynamic acquisition rate at trigger points, and with the reduced rate when there is no trigger.

Data is only stored when one or more trigger conditions are met. The software also allows us to set "pre" and "post" trigger time to store data before and after the trigger condition is met.

No data is stored between trigger conditions. The amount of stored data is kept to a minimum. We can easily move between trigger windows and analyze the events. The recorder screen offers cursors for absolute values, time, or frequency.

Long-term Temperature Monitoring

For long-term or permanent temperature monitoring, we offer temperature data loggers with the ability to store data into the local or cloud database based on OPC UA standard protocol.

The Historian software package provides a time-series database for long-term or permanent data recording. The database can be either located locally, on the remote server, or in the cloud. The solution is based on the InfluxDB time-series database open source project.

Historian provides several useful features for your historic data:

Raw and reduced data: While raw data is always stored on the measurement unit for an in-depth analysis, Historian takes the role of long-term reduced data storage into the cloud database.
Data safety and retransmit: If the connection between the measurement hardware and the database is lost, the data is safely stored locally on the measurement unit and then retransmitted to the database when the connection is available.
Trending and Analysis: Historical data can always be recalled and loaded from the Historian database and used for trend analysis as well as for in-depth analysis and root cause identification.
Web client: The web client interface is accessible from any web browser, making it a cross-platform and mobile solution. It provides an overview of the most important machine health data and its trend over time.
Alarm and alert levels: Alarms and alerts can be set on each display and tied to email/SMS notifications.