Frequently Asked Questions

Are your sensor's measurements traceable to NIST?

  Yes, all temperature and pressure sensors are calibrated with NIST-traceable standards. 

Frequently Asked Questions

What is the wireless range?

 Most customers see between 50 feet and 100 feet in buildings.  That includes some wall and window penetrations.  Range can be extended by using the Range Extender. The Range Extender is a transceiver that serves as a repeater.  When placed between the WR and the sensing modules, the range is almost doubled.  The Range Extender is also useful for turning corners on balconies or in corridors. 

What about interference from WiFi?

 WiFi is generally not a problem, because the Wrist Reporter uses a means of communication that is designed to avoid interference.  If communication problems are encountered, the user should first assume that WiFi is not the problem, and make sure everything is properly set up. However, WiFi does use the same part of the frequency spectrum as the Wrist Reporter’s standard of IEEE 802.15.4, so interference is theoretically possible.  Each time the Wrist Reporter is turned on, it scans the 16 available channels and selects the best one.  If trouble is encountered, the Wrist Reporter and the radio modules should all be turned off.  Then turn them back on. This time they will select a different, better channel.   

Will the signals penetrate concrete and steel floors?

 Yes, but not much further. The signal strength will be dramatically attenuated by thick concrete and steel.  A Range Extender is almost always required to boost the weakened signal. Another option when multiple floors are between the Wrist Reporter and the radio modules is to place a Range Extender on the outside of two windows, one where the radio modules are and one where the Wrist Reporter is. The RF signals will go out the window, up or down to the other Range Extender, and in the window onto the remote floor. Elevator shafts can also be useful. 

How does the data get uploaded to a PC?

 A software utility is provided for installation on the user’s PC.  This creates an icon on the user’s desktop.  When initiated, the utility will take the user through a sequence of questions and instructions, after which the data will reside in an Excel spreadsheet that the user can name and place in the folder of his choice. 

Is the Wrist Reporter a datalogger? Can I schedule readings and have them stored automatically?

 Yes.  The Wrist Reporter can store up to 100,000 readings with time and date stamp.  Up to 10 wireless sensors at a time may be datalogged. The user has three options for a logging schedule:  every reading every second or two, depending on sensor type; one minute between readings; or 10 minutes.  

How are the readings timestamped?

 Readings are timestamped with the day, hour, minute, and second of the reading. The timestamp can be viewed on the Wrist Reporter as well as later when the data is uploaded to a PC.