3 Ways to Troubleshoot RTD Probes on an Accsense System
CAS Data Loggers
12628 Chillicothe Rd., Unit J
Chesterland, OH, 44026
Press release date: June 20, 2012
Wireless Temperature Monitoring and Alarm Systems
CHESTERLAND OH - Several Accsense data logger pods can connect with PT-100 RTD temperature probes to provide highly accurate measurements. These probes are 3-wire probes and can present some problems when users do the initial install. With this in mind, the Applications Specialists at CAS DataLoggers have prepared this quick list of troubleshooting tips for users seeing extreme temperature readings.
When logging into the Accsense system, if the indicated temperatures seem to be way out of range, this is an indication that the RTD probe has been miswired, or that perhaps there is a broken wire. If the temperature indicates around 240°C or 400°F, the probe has been wired backwards. If the temperature is around 125°C or 260°F, 2 of the wires have been crossed: the pod has been wired with the odd-colored wire between the 2 wires of the same color. If the temperature is reading around -240°C or -400°F, there is most likely a loose wire or a break in the wire cable. Check the wiring diagram for the pod, noting that 'EXC+' and 'IN+' will be the 2 wires of the same color, and 'IN-' will be the odd-colored wire.
If all the wires solidly attached, then there is probably a break in the cable. This can often be fixed just by cutting a portion of the cable and stripping back new wire. If that does not fix the problem, you'll need to replace the probe.
Accsense data logging systems allow wireless or wired monitoring with the use of internal and external sensors to measure common parameters including temperature, humidity, voltage, current, light and vibration readings. The Accsense wireless monitoring system will automatically send data to a secure server where it is stored. With the data coming in, you can setup sophisticated alarms to monitor the data in real-time and send out email, pager or phone notifications whenever an alarm goes off. Using a standard web browser, users can sign in to retrieve reports and graphs or modify the system configuration from anywhere an internet connection is available. Additionally, Accsense systems comply with FDA, JCAHO, HIPAA, and other industry standards.
CAS DataLoggers products are used in a wide variety of applications in remote monitoring, in industrial process and manufacturing industries, for automotive and aerospace data collection, in pharmaceutical manufacturing and storage, and in geological and environmental monitoring. CAS DataLoggers provides configuration assistance, programming, custom system design and assembly, post-sales technical support, and repair and calibration services. Development capabilities include custom data acquisition and data logging systems, test and measurement systems, and portable data collection systems.
For more information on Electrocorder's low-cost voltage and current data loggers, additional devices monitoring a wide variety of signals, 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.
CAS DataLoggers, Inc.
12628 Chillicothe Road
Chesterland, Ohio 44026