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Temperature and Sterilization Monitoring in a Rice Mill

CAS DataLoggers introduced a flexible data monitoring system to a rice miller and food processing company that had recently installed a new production line. This line produced various cooked rice products in reheatable and microwaveable polymer sachets. Consequently the data logging system was utilized to monitor the retort cooking and sterilization temperatures as well as the accumulated Fo value (expressing the heating time required for disinfection) during production of its various pouched rice products. The added capability to download the results was also necessary both for analysis and quality purposes. Internal calculation and real-time data collection were crucial customer needs. To learn more …

Accuracy of a Data Logger – Convenience of a Flash Drive

CAS DataLoggers and Lascar Electronics have partnered to announce the release of the new EL-USB-1-LCD Temperature Data Logger with LCD. This standalone data logger measures and stores up to 16,378 temperature readings over a -35 to +80°C (-31 to +176°F) measurement range. Continue Reading…

64KTM Temperature Recorder

The Delphin 64KTM was developed to provide a multi-channel solution for temperature measurement using thermocouples. It provides 64 differential inputs with 110V isolation and galvanic separation prevent measurement errors from ground loops and a 24 bit sigma-delta A/D converter. The Cold Junction reference temperature is measured using a class A, 4-wire RTD enabling an absolute accuracy of 0.2°. Other features include:

  • Industrial grade 19″ rack enclosure
  • Support for E,J,K,L,N,S,R,T,U thermocouples
  • 24 Bit measurement resolution
  • 1 GB Internal memory
  • Ethernet, Modbus, Profibus interfaces
  • Up to 1 GB of local memory
  • Expandable to >1000 channels
delphin 64KTM temperature recorder

Delphin 64 KTM

Typical users are R&D groups and laboratories who need to acquire highly precise temperature measurements. Traditional areas of use are test stations for gas turbines or boilers but the system is also suitable for temperature measurement in ovens, furnaces, heating chambers, temperature controlled enclosures and manufacturing or processing equipment.

The 64KTM is equipped with internal memory for up to 128 million data records. The memory’s independent data recording capability provides data security for long-term measurement runs. Individual channels can be set up with limit values enabling monitoring and alarm functions and calculations including moving averages. The basis version if the 64KTM is set up for 64 channel operation and the modular design enables several units to be connected so that several thousand channels can be processed.

For more information, go to the KTM64 Product Page or call us at 1-800-956-4437. To find out about all of the data logging products we offer including models from more than a dozen manufacturers, visit our web site

New RTR-500 Wireless Temperature Data Loggers with Cellular Gateway

rtr-501 wireless temperature data logger

RTR-501 Wireless Temperature Recorder with Internal Sensor

CAS Dataloggers is please to announce the new RTR-500 family of wireless data loggers from TandD Corporation of Japan. These data loggers give you the ability to monitor temperature and humidity virtually anywhere via a built in GSM/GPRS Cellular Modem in the RTR-500GSM base station.  The individual loggers communicate with the base station via a high speed short range 900 MHz wireless network. Then, data and alarms are automatically sent from the base station via email or ftp via the standard cell phone network.

The RTR-500 family currently includes:

  • RTR-500 USB Base Station/Repeater
  • RTR-500GSM Base Station with GSM/GPRS modem
  • RTR-501 Temperature Data Logger with internal sensor
  • RTR-502 Temperature Data Logger with external sensor
  • RTR-503 Temperature and Humidity Data Logger

They offer improved performance over the current RTR-5 series including increased short range wireless range (up to 500 feet), faster download speed and longer battery life, (up to 4 years in the high capacity models).

The new RTR-500GSM Cellular Base Station is the heart of the system. It can automatically download data from up to 20 individual data loggers. The base station also provides real-time monitoring of the data loggers for alarm conditions and can then send the alarm notification via email or SMS. The RTR-500GSM can be powered from an external 8-34 VDC source and features an internal battery backup. It also provides a set of alarm contacts for local notification. An optional GPS can be attached to the RTR-500GSM for location tracking. A new software set-up wizard simplifies the GSM network configuration of the base station.

The RTR-500 family is ideal for monitoring temperature and humidity in locations where LAN connections are not available or practical such as trucks transporting perishable goods, remote storage or warehouse locations and environmental monitoring.

For more information, visit the TandD Product Page, click here for the RTR-500 Brochure or call us at 800-956-4437. For information on all of the products we offer including data loggers from more than a dozen manufacturers, visit the CAS Dataloggers Web Site.

Temperature Sensor Tutorial

Temperature measurements are among the most common data logging applications. There are 4 main types of temperature sensors that are used with data loggers for measuring temperature:

Thermocouples which generate a voltage proportional to temperature are the most common type of temperature sensor and are widely used where cost, simplicity and operating range are important and extremely high accuracy is not required. RTD’s and thermistors provide a change in resistance that is related to temperature and while to offer higher accuracy than thermocouples the have a more limited operating range. Semiconductor devices provide an output voltage or current proportional to temperature and offer low cost devices with a limited operating range and accuracy comparable to thermocouples.

For more information on these sensors, click here for the Temperature Sensor Tutorial Page on the CAS DataLoggers Web Site.

Universal Input Data Loggers

DT80 Datalogger

DT80 Data Logger

Universal input data loggers provide an excellent solution when you need to record temperature along with other parameters. We offer several models from different manufacturers that can measure voltage, current, thermocouples, RTD’s, strain gauges or many other sensor type. This flexibility provides several advantages:

  • You can move the logger from project to project without having to reconfigure the hardware
  • You can measure multiple types of inputs signals in a single logger for example temperature with a thermocouple, voltage from a pressure sensor and the pulse outputof a flow meter

While these loggers are more expensive than single purpose data loggers, they can greatly simplify more complex data logging projects or projects where the requirements may change over time.

For more information, click the following link for our Universal Input Data Logger Product Page.

Temperature Recorders

Lascar EL-USB2-LCD


We offer a selection of turn-key temperature recorders that are supplied the with sensors either built into the logger or with an external temperature probe. They provide a complete solution to your temperature data logging needs. There are models with built in USB or Ethernet interfaces. We also offer wireless data loggers that can be used with several versions of base stations to monitor and retrieve the data without having to make a physical connection to the data logger. Several models also provide limit checking with alarms and notification of out of range temperatures.

These device offer a very cost effective solution to basic temperature recording needs. Typically, the operate over a more limited temperature range than Thermocouple or RTD data loggers and provide lower accuracy. However, they are ideal for simple temperature monitoring in refrigerators, freezers, warehouses, and storage areas. Click the following link to go the Temperature Recorder Product Page. If you are looking for a general purpose data logger, please visit our web site, CAS Dataloggers for a complete selection of data logging equipment from more than a dozen manufacturers or call us a 1-800-956-4437.

RTD Temperature Recorders

TandD RTD temperature recorder

TandD RTR-52pt RTD Temperature Recorder

We have several models of data loggers that are suitable for use with RTD’s.  RTD sensors provide improved temperature measurement accuracy over thermocouples. The main tradeoff is that they have a more limited temperature measurement range than thermocouples.

An RTD works by changing resistance in a very predictable way in a proportion to changes in temperature. To make the measurement, the data logger will source a known current through the RTD and measure the voltage across it. From this it can calculate the resistance and then convert the resistance to temperature. Because the resistance of the lead wires which attach the sensor to the data logger can cause measurement errors, 3 or 4 wire RTD’s can be used. These allow the data logger to compensate for the effects of this resistance and subtract it from the measured value to improve the measurement accuracy.

For more information, click here for the RTD Temperature Recorder Page. For a brief tutorial on sensors for temperature measurements, please click here for the Data Logger Tutorial Page on our CAS Dataloggers Web Site.

Thermocouple Data Loggers

We offer a selection of data recorders designed to be used with thermocouples, the most common temperature measurement sensors. These loggers are ideal if you only need to measure temperature and if you don’t need extreme accuracy. If your data logging application requires that you measure temperature along with other parameters at the same time, we suggest you check out our Universal Input Data Loggers. If you need higher temperature measurement accuracy, you may want to consider aTemperature Data Logger for RTD Sensors or Data Loggers for Thermistors.

Thermocouple Data Logger Product Page

A Note on Thermocouples: Thermocouples are widely available, come in many differenet styles and cover a very wide temperature range. Their main disadvantage is that their accuracy is less than other temperature sensors. The ASTM provides limits for standard thermocouple wire that are typically on the order of 1-2°C although Special Limits of Error (SLE) wire is available at additional cost. The other consideration with thermocouples is that they generate a very small voltage especially around 0.0°C which may cause issues in electrically noisy environments or if long wire runs are required.

Oven Profile Data Loggers

We offer several different temperature profiling systems from 1 to 6 channels to gather data to help optimize processes and minimize costs for baking, powder coat curing and other process ovens. Oven Profile Grant SQ2010 Data Logger

These systems include temperature data loggers and thermal barriers that are designed to be passed through conveyor or batch ovens. They can measure the temperature profile of items as they pass through the oven to determine how fast they heat/cool or how uniform the temperature is across the part. They are useful for electric, gas and radiant ovens.

Grant Systems provide a complete turn-key package including data logger, thermal barrier and probes especially designed for paint curing applications. The PaintView software program provided as part of these systems includes % cure calculations, and direct printer support.

The Madgetech systems provide a low cost easy to use solution including data logger, thermal barrier and thermocouples for basic oven temperature measurements.

Custom thermal barriers are available on request for other applications that have different process time/temperature profiles.