Tutorial Page

Troubleshooting the Accsense B1-06 Wireless Gateway

Diagnosing Network Connection Issues

CHESTERLAND, OH—September 15, 2015

Network configuration errors can occasionally crop up with wireless monitoring systems. We present this brief tutorial showing you how to troubleshoot network connection issues using the Accsense model B1-06 Wireless Gateway. Read more in our latest Accsense Tech Article. You can also watch our brief YouTube video at https://www.youtube.com/watch?v=gEh94uSWdQQ.

How Your Plant Can Lower its Bills Using Power Factor Correction

Identify Savings and Improve Efficiency by Measuring Your PF
CHESTERLAND OH—July 23, 2014

In electrical engineering, Power Factor (PF) is the ratio of real power to the apparent power flowing to the load from the source. From a business standpoint it’s important to understand how having a low Power Factor raises your plant or factory’s power bill. At CAS DataLoggers we present this article to help you identify this value and use corrective techniques to raise it for substantial savings and greater equipment efficiency. Read more in our latest Datalogging Tutorial page.

Is Your Office Being Overbilled for Energy?

Look at Your Energy Data and See for Yourself!
CHESTERLAND OH—April 30, 2014

In every industry, companies and businesses are looking for ways to save on energy costs, such as performing an energy audit or energy assessment. At CAS DataLoggers we provide offices and factories across America with energy monitoring solutions, and we’ve written this quick guide to examine several low-cost ways you can find these savings for your own facility. Most are easy to implement but you may surprise yourself with the results. Learn more about how to cut your energy bills on our Tutorials page.

What is a Data Logger?

Data Logging 101

Data Logging 101

What is a datalogger? These products are widely-used measurement and data storage tools that monitor your product or process 24/7. Using a data logger you can keep an eye on temperature, humidity, current/voltage or just about any kind of data. In this article the Application Specialists at CAS DataLoggers walk you through the basics of data loggers and what they can do for your business or organization. Read more in our newest White Paper.

Choosing Data Loggers for Your Green Building Project

The green building industry is quickly expanding, and successful projects benefit from accurate assessment and evaluation from start to finish. From hospitals to industrial process to single-family homes, measurement and recording of conditions such as temperature, humidity, and energy usage are essential to carrying out and testing your designs. Learn more at our Data Logger Tutorials page.

Top 10 Reasons to Buy From CAS DataLoggers

Extensive Product Lines Combined with Value-Added Services
CHESTERLAND OH—April 30, 2012

CAS DataloggersIncreasingly, businesses and organizations are saving time and money by relying on automated data collection to increase their productivity and reduce unnecessary labor costs. Manual measurements are always prone to human error, but data loggers take high-accuracy measurements without distracting workers from other tasks. So where should you look to find the ideal device for your specific project? Fortunately, customers have ten compelling reasons to start and end their search with CAS DataLoggers. Read more on our datalogging tutorial page.

Updating Modem Module Firmware on DT8xM Model Data Loggers

Featuring Integrated Cellular Modems For Remote Applications
CHESTERLAND OH—February 22, 2012

The bestselling dataTaker DT8xM intelligent data loggers offer users all the capabilities of the popular DT8xM models while adding a built-in cellular modem to suit a wide range of remote monitoring applications. Entirely eliminating the need to travel out to the logger and manually retrieve recordings, the DT8xM’s automatic data delivery features let users schedule their data to be automatically emailed to an inbox every day, week, month or other time interval. This brief tutorial takes you through the process of updating the modem module’s firmware. Read the entire article on our technical article page.

Using dEX to Create an OnInsert Job with a dataTaker DT8x Series 2 or 3

Setup Ease of Programming with dataTaker Intelligent Dataloggers
CHESTERLAND OH—February 9, 2012

OnInsert jobs offer users a convenient backup on USB stick when working with the popular dataTaker line of intelligent dataloggers. When done writing the program in dEX, you run the command and it creates a USB stick program to reprogram the dataTaker, and if you lose the program you can always just insert the USB in the front of the logger. This tech article will guide you through the process of OnInsert job creation to set up this convenient programming feature. Read the entire guide on our technical article page.

Setting Up Relay Control with DT8x Data Loggers

Using the DT8x Series Intelligent Data Loggers from dataTaker
CHESTERLAND OH—January 5, 2012

It is often necessary to control external relays when working with a DT8x series data logger to control high current/high voltage devices. There are 2 components to setting up the data logger to control a relay: the electrical interface between the logger and the relay, and the programming to trigger the relay. This tech note will guide the reader through both requirements to complete this setup.

The data loggers provide 1 electromechanical relay that is capable of switching up to 30VDC at 1Amp, but if more than 1 output or higher voltages or currents are required, external relays must be used. To control the external relays, the logger provides 8 digital outputs (4 for the DT82x series). It’s important to understand that these 8 (4) outputs are not identical; digital outputs 1-4 (1-3 for the DT82e) are current sinking inputs which can switch up to 30VDC at 100mA, while digital outputs 5-8 (4 for the DT82E) are TTL logic level outputs which provide 0 or 3.3VDC for the ‘off’ or ‘on’ states respectively.

Digital Outputs 1-4
The sinking digital outputs 1-4 can be connected directly to the coil of a relay that draws a maximum current of 100mA at a maximum voltage of up to 30 VDC. In this case, the positive output of an external power supply is connected to one side of the relay coil, the other side of the coil is connected to the digital input of the data logger, and the negative side of the power supply is connected to the digital ground of the data logger. To activate the relay, the digital output is set to 0 using a command such as 1DSO=0 and to turn the relay off, 1DSO=1. The 1DSO=0 command turns on the FET connected to 1D which allows current to flow through the relay coil and activate it. Also, please note the “freewheeling” diode connected across the coil of the relay. This diode is very important as it protects the digital outputs from the inductive voltage spike generated by the coil windings when the relay is switched off. Some relays provide this diode internally, but if it is not present, an external diode such as a 1N914 should be added, as without it the digital outputs of the data logger may be damaged.

Digital Outputs 5-8
Control of a relay using digital outputs 5-8 is a bit more complicated as they are not suitable to directly drive the relay coil. To utilize these outputs, an external driver must be used between the data logger and the relay. The simplest method is to use an external transistor driver. Note that in this case the programming is opposite the first 4 digital outputs; to turn the relay on, use the command 5DSO=1 and to turn it off, use 5DSO=0. Also, notice that this configuration also requires the external diode to protect the driver transistor from the inductive voltage spike. If more than one relay needs to be controlled, the ULN2803 Darlington Driver IC provides 8 transistor drivers than can source up to 500mA.

Programming Relays
The most common application is to control the switching of the relays via an alarm statement, but other applications may require manual control; for example to turn a relay on or off at a specified time.
In this case, an alarm limit is setup and the built-in output functions are used to turn the digital output for the associated relay on and off. Note that using this method will also automatically turn the relay off when the alarm condition is false. If this automatic resetting of the relay is not desired, a manual command can be used to turn on the relay.

The manual command can also be used if hysteresis is required where separate alarm commands are used to turn the relay on and off at different set points to avoid the potential for rapid oscillations that might occur with the previous method when the measured value is close to the limit value.

The Control function can be used to manually turn a relay on. For example, Schedule_2 can be set to run once an hour and turn the relay attached to digital output 1 on for 10 seconds, and then turn it off by using the ability of the logger to generate a digital pulse of user-specified duration. Manual control of the digital outputs can be used to implement more complex relay switching where simple alarm functions will not do what’s necessary.

For more information on the dataTaker DT8x series of Intelligent Universal Input 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

Sending Data and Alarms via Email on DT8x Data Loggers

dataTaker Intelligent Data Logging Systems

CHESTERLAND OH—December 20, 2011

With their latest firmware release, dataTaker DT8x data loggers now offer built-in email support for alarms and sending data when connected via Ethernet. This capability is also available in dataloggers with a built-in cellular modem. Users can follow 2 easy steps to configure their dataloggers to start sending emails: configuring the outgoing email server information, and then configuring the alarm or unload with the email message recipient information.

Outgoing Email Server Configuration

The dataTaker device will use an existing outgoing email server to send any messages, so before using the email feature, it is necessary to configure the information for the server that will be used to actually send the message. The data logger uses standard SMTP so that any standard server that supports SMTP can be used. To enter the settings, go to the logger configuration window and click on the Ethernet email item. In the From: section, enter the user name and user email which you’d like the message to use as the sender information. Then, enter the address of a valid SMTP email server along with a user name and password for an existing valid account that will be used to connect to the email server. Be aware that if the server name is entered in a form such as smtp@gmail.com , the logger must have been configured with a valid DNS server to be able to translate the name to an actual IP address; the DNS setting is made in the Ethernet settings window.

Configuring an Alarm to Send Email

The second step is to provide the remainder of the email information in the alarm set-up. As usual, create an alarm by going to the Alarm tab within the Channel Configuration window. On the Condition tab, click the Use Event box and enter the alarm condition as appropriate. Next, click on the Output tab and under the Action navigator, click the Add button and select E-mail. The Output text field will be sent as the contents of the email message and the logger will put in a default email message stating:

“Event triggered on Logger ! at @ on #, ?N value is ?V ?U”

This message identifies the logger by serial number (Logger !) along with the time and date (@ and #) at which the alarm was triggered, the channel that triggered the alarm (?N), and the measured value (?V ?U). This message can be edited to provide a custom alarm message as necessary. Next, enter the email recipient list and the subject. If more than one recipient is required, separate them with a comma.

Configuring an Alarm to Send Text Messages

It’s often desirable to send a text message on an alarm to provide immediate notification. Fortunately, this is quite simple as most cellular providers offer an email to SMS messaging gateway. Using these gateways, sending an email to the appropriate gateway address will automatically generate an SMS message. You can find a list of these gateways on Wikipedia at: http://en.wikipedia.org/wiki/List_of_SMS_gateways

For example, for Verizon, sending an email to:
number @vtext.com

number is the 7-digit mobile phone number
…will result in an SMS message to the appropriate phone.

Configuring Data Unload via Email

This new firmware also provides the capability to unload data and have it sent via email. The COPYD command can be used to tell the data logger to unload its stored data. COPYD has a number of options that are used to configure which data is unloaded, the format of the unloaded data, and the destination of where to save it. These are documented in the dataTaker Training Note “TR-02RD CopyD command”. Using the destination option DEST, you can specify that the data be sent as an email attachment. Specifying an email destination is similar to FTP, except that a mailto: URI is used. This has the form:



recipient-email is a comma-separated list of one or more email addresses in the usual format (e.g.jake@peg.edu.au).

Check out the dataTaker DT8x product page here.

For more information on the dataTaker DT8x 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