Tag Archive: data loggers

Accsense Videos on YouTube Simplify Setup and More

At CAS DataLoggers we have new YouTube videos at https://www.youtube.com/user/CASDataLoggers walking you through wiring, setup and connection for Accsense monitoring devices. Learn more on our News page at http://www.dataloggerinc.com/content/news/general_news/789/accsense_videos_on_youtube_simplify_setup_and_more/.

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