Tag Archives: data loggers

Environmental Monitoring in a Manufacturing Plant

Accsense VersaLog for Multichannel M onitoring

Accsense VersaLog for Multichannel M onitoring

CAS DataLoggers recently delivered the datalogging solution for a production plant whose process machinery was mysteriously slowing down and causing production delays. This application required a portable datalogger with the versatility to measure temperature and humidity which was capable of standalone operation without a PC. Read more on our Environmental Monitoring Applications Notes page.

All-in-One Monitoring System Protects a Server Storage Room

CAS DataLoggers System Monitors Temp & Humidity, Detects Early Leaks
CHESTERLAND OH—March 7, 2013

server_monitoringCAS DataLoggers recently provided the continual monitoring and alarm system for a server storage provider whose customers relied 24/7 on the equipment’s reliability. For example, if a single server rack goes down due to unstable temperature or humidity, this can be disastrous to the data center’s operations. Water leaks posed another serious danger, entering through leaking AC systems, water pipes, and even roofs and floors. Read more on our Environmental Applications Notes page.

Automated Temperature Monitoring in a Macrobrewery

CAS DataLoggers Provides High-Accuracy Wireless Technology
CHESTERLAND OH—February 21, 2013

Automated Temperature Monitoring in a Macrobrewery

Automated Temperature Monitoring in a Macrobrewery

CAS DataLoggers
recently supplied a wireless alarming system to a brewery mass-producing American lager. As its top priority, the brewery wanted to monitor its fermentation process in greater detail to further ensure quality control for their brand’s consistent flavor. The beer is kept in stainless steel fermenters in a wide-open room. Management wanted a wireless system since it would be too time-consuming to get a network drop, and for temperature alarming they wanted remote data download to offices located in the building and in distant locations. Read more on our Quality Assurance Applications Note page.

Temperature Monitoring and Alarming in Meat Lockers

Record Temperatures on 8 Channels with Accsense VersaLog
CHESTERLAND OH—January 28, 2013

Accsense VersaLog for freezer monitoring and alarming

Accsense VersaLog for freezer monitoring and alarming

CAS DataLoggers
recently provided Accsense VersaLog Temperature Data Logger as the freezer alarming solution for a slaughterhouse with meat lockers storing product requiring continual temperature monitoring. The company also needed proof of regulatory compliance, so inexpensive software was also needed. In the event of an air conditioner compressor failure, the meat could easily spoil and pose a health hazard, so the business searched for a reliable yet low-cost temperature monitoring and alarming data logger. Read more on our Food & Agriculture Applications Notes page.

CAS DataLoggers Offers Protective Boot for Handheld DataPad

Lascar EL-DataPad Handheld Data Collector

Lascar EL-DataPad Handheld Data Collector

Lascar EL-DataPad Handheld Data Collector and Programmer
CHESTERLAND OH—April 17, 2012

CAS DataLoggers has teamed with Lascar Electronics to offer customers a new accessory for its popular handheld data collector and programmer. The EL-DataPad Protective Boot protects the device from scratches and light knocks, making it even more suited to remote data collection in the field. Read the entire article on our product announcement page.

New Update to T&D’s Popular WebStorage Service

New and Improved Functionality for High-Quality Data Loggers
CHESTERLAND OH—April 16, 2012

TandDCAS DataLoggers and T&D, Japan’s #1 manufacturer of temperature and humidity data loggers, is announcing new and improved functionality for the popular WebStorage service. Changes include really helpful features improving data accessibility and organization–for example, the Graph function has been enhanced with new functionality such as a scrolling readings cursor, Min and Max color-coded arrows, and more. Read the entire article on our T&D product announcements page.

CAS DataLoggers Now Offers Temperature Calibration

Professionally Certified Data Loggers From the Experts
CHESTERLAND OH—April 11, 2012

CAS DataloggersCAS DataLoggers is now offering customers an in-house temperature calibration service, drawing from many decades of electrical engineering knowledge and experience to deliver highly-accurate datalogging systems that can handle just about any temperature monitoring application. CAS DataLoggers has recently acquired temperature calibration equipment and provides this service for many of its temperature data loggers including Accsense, T&D, and other devices featuring external sensors. This new product support comes in response to increased demand from users across a wide variety of applications, especially in the medical and life sciences industries. Read the entire article on our general news page.

CAS DataLoggers Chosen by Alaska Clinics to Monitor Vaccines

Providing Accsense Wireless Temperature Monitoring and Alarm Systems
CHESTERLAND OH—January 23, 2012

Alaska’s Department of Health and Social Services recently chose CAS DataLoggers and its advanced Accsense systems to provide the temperature monitoring solution for the extensive Alaska Immunization Program which had distributed vaccines to Alaskans for over three decades, all at no cost to providers. The program’s 26 remote public health centers handled both storage and dispensation of critical medicines and vaccines as part of an ongoing universal vaccine distribution program for childhood and adolescent vaccine-preventable disease control and prevention. Read the entire article here.

Applying Thermocouple Calibration Corrections Yourself

Using the Popular DT80 Series of dataTaker Data Loggers

CHESTERLAND OH—November 23, 2011

When working with dataloggers, users sometimes have to apply calibration corrections themselves, which can be quite an involved process. This tutorial examines a scenario involving thirty thermocouples connected to a dataTaker device in the bestselling DT80 series of intelligent universal data loggers which needs to have calibration corrections applied.

The technique is to calculate a polynomial equation to calculate the adjustments, and the
dataTaker datalogger can do this in a number of ways. First, the built-in polynomial function can be used to apply the adjustment. There are fifty spans and polynomials available on the DT80 range of loggers. If more than fifty thermocouples need to be calibrated individually, a different technique must be used; this alternate method involves using channel variables and calculating the adjusted temperature values.

Using polynomial corrections, the first step is to calculate the polynomial factors. For example, these results from the calibration lab are expressed as corrections at measured temperatures. They are in the form shown below:

Test Temp 1 -50.40°C Measured Temp -47.30°C Correction -3.10°C
Test Temp 2 0.04°C Measured Temp -0.70°C Correction 0.74°C
Test Temp 3 200.85°C Measured Temp 202.40°C Correction -1.55°C
Test Temp 4 301.10°C Measured Temp 298.40°C Correction 2.70°C

The normal measurement of a thermocouple type K would be in the form
1TK(“Top Side Temp”). To use a Polynomial correction, first calculate the terms of the
polynomial. To do this, use the ‘Trend Line’ feature of Excel. Enter the values in Excel, then highlight the Table and Click the Chart Wizard ICON. Then select XY Scatter. Click Next, Next, Next, Next. Now click Finish. Right-Click on one of the Graph Points and select ‘Add Trendline’.

Select the Polynomial Box and set the Order to 5. Select the Options Tab and check ‘Display Equation on Chart’. Check ‘Show R value on Chart’. Click OK. When the trend line is produced and the equation is displayed, right-Click on the equation and Select ‘Format Data Label’. Now select the Scientific Format and set the decimal places to around 8. Click OK, then click the equation and select Copy.
This is the polynomial for the correction:
y = -1.49953975E-06×3 + 5.74059250E-04×2 + 9.56585619E-01x – 7.38264343E-01
R2 = 1.00000000E+00

The aim is to get an R value as close to one as possible.
A warning when using polynomials: It is necessary to confirm the polynomial correction within the range of temperatures that are being used, as polynomials can produce unexpected results outside the calibration range. Also note that you can right-click on the graph and zoom out and left-click to zoom in. The values given by the polynomial below –100deg C are incorrect.

Using the built-in Polynomial capability
In dEX, the measurement becomes:

This will save the measured and corrected value.

In the case of needing more than 50 calibration curves, the calculation function in dEX can be used to enter the correction factors for each measurement. In this example, assume that the temperature was measured as TSTempRaw and saved in 1CV. Then Select Add -> Calculation. In the Calculation field, enter the equation as shown in Excel and replace the X with the appropriate CV value i.e.:

y = -1.49953975E-06×3 + 5.74059250E-04×2 + 9.56585619E-01x – 7.38264343E-01

This will save the measured value and the corrected value.

If you wish to save ONLY the corrected value, uncheck the “Log and display this value” option in the TSTempRaw measurement.

For further information on the dataTaker DT80 series of intelligent universal data loggers, other dataloggers in the highly successful dataTaker line, or to find the ideal solution for your application-specific needs, contact a CAS Data Logger Applications Specialist at (800) 956-4437 or visit the website at www.DataLoggerInc.com.

Contact Information:
CAS DataLoggers, Inc.
12628 Chillicothe Road
Chesterland, Ohio 44026
(440) 729-2570
(800) 956-4437


Performance Validation of Test Cars

Grant Squirrel SQ2040 Portable Universal Input Data Logger

CHESTERLAND OH—October 18th, 2011

CAS DataLoggers recently provided a major automobile manufacturer with the data logging solution for its rigorous performance validation testing. As part of the testing of any new vehicle, sample units were typically subject to a variety of endurance and durability tests to identify any potential weak points or failure modes and chart their performance. To gather the most detailed record of a car’s data throughout these speed validation tests and ensure the safety and robustness of the entire product line, engineers needed highly accurate, reliable data logging equipment. These devices would have to be capable of measuring the many parameters used to gauge the cars’ performance as well as be portable and compact for quick placement and retrieval from hundreds of test cars.

Plant management installed 20 Grant Squirrel SQ2040 Portable Universal Input Data Loggers in an equal number of their test cars. Subsequently, test engineers put their development cars through testing on the track at high speeds as part of their endurance testing program, equipped with temperature and pressure sensors feeding data into the SQ2040 dataloggers. The loggers were set to record the data at preset regular intervals throughout the tests, including road conditions, engine temperature and pressure data, all recorded into each Squirrel’s memory. This data gave engineers vital information on performance concerning a whole host of vehicle components.

The Grant SQ2040 dataloggers each featured up to 32 universal analog inputs for voltage, current or resistance and up to 8 inputs for digital pulse and event, supporting a wide range of analog inputs including thermistors, thermocouples, RTD temperature sensors, voltage, current, and resistance. Twin processors and multiple 24-bit ADC converters enabled precision measurements with a high basic accuracy of 0.05%, while 4 alarm outputs provided early warning capabilities whenever key parameters went out of specification.

Compact and lightweight, the high-performance Squirrel dataloggers were easy to transport to and from the test cars and intuitively convenient to use. Functioning as portable, standalone data loggers or as PC-linked data acquisition systems, the Squirrels could be battery-operated or mains powered, and were quickly configured via integral interface or by PC. Each logger offered 16 MB of internal memory for approximately 14 million readings, as well as removable Multi Media (MMC) or SD card memory. Fully equipped with the same advanced features as the Squirrel 2020 series but adding additional high speed data logging on up to four channels and twice as many universal input channels, the SQ2040 loggers had the versatility to handle the demanding multi-channel testing of the plant’s vehicles at top speeds.

The data loggers’ communications features included built-in Ethernet networking along with USB and RS232 connectivity. When a validation test was over, engineers easily and quickly downloaded the Windows-based data from each Squirrel in graphic form onto a PC for analysis. This data was then applied to existing production methodologies and resulted in safer automobiles.

The automobile manufacturer benefited in several key ways following installation of the Grant Squirrel SQ2040 dataloggers in their quality assurance program. Most importantly, the loggers could measure the wide variety of parameters needed in the tests. These data loggers featured many universal channels recording at high accuracy and offered several communications options, all at a low price. The portable Squirrels were also ideal for quick installation in the test cars and were quickly configurable which gave the project a head start.

A quality performance engineer commented: “We chose the Squirrels because they’re about the size of a small notebook but extremely sophisticated and very easy to use. Downloading the information from the loggers to our PCs enables us to analyze the data quickly and clearly. We’ve already tested hundreds of cars and the Squirrels have proven to be invaluable tools for improving the reliability of our vehicles. With these devices, you don’t need to be a computer scientist to collect, download and analyze your data.”

Check out the SQ2040 product page here.
Additional temperature data loggers can be found here.

For further information on the Grant Squirrel 2040 data logger, the entire Squirrel family of data loggers, or to find the ideal solution for your application-specific needs, contact a CAS Data Logger Applications Specialist at (800) 956-4437 or visit the website at www.DataLoggerInc.com.

Contact Information:
CAS DataLoggers, Inc.
12628 Chillicothe Road
Chesterland, Ohio 44026
(440) 729-2570
(800) 956-4437