Web Server
XW-110™ WiFi Temperature Sensor Users Manual
Selecting sensors is simplest when the sensors are connected to the bus one at a time. The procedure
is to start with one sensor and associate it with the appropriate sensor number by selecting the sensor
address within the appropriate drop-down list. Submit the page, connect a second sensor, and press the
Refresh List button. Associate the second sensor to the appropriate sensor number. Continue this
procedure until all sensors are set up.
Offset
The value of the offset will be added to the sensor's reading. Normally this should be set to zero.
Alarm 1 (XW-110-
Plus
only)
This setting is used to set the trigger point for an alarm condition. The number field specifies the
temperature at which the alarm is triggered. The “High” and “Low” radio buttons indicate whether the
alarm is triggered as a high or low alarm. A high alarm is triggered when the sensor reading exceeds the
alarm value, and a low alarm occurs when the sensor reading falls below the alarm value.
Alarm 2
(XW-110-
Plus
only)
This is a second alarm trigger that works similar to Alarm 1.
High Alarm (XW-110 only)
This setting is used to set the trigger point for a high alarm condition. A high alarm is triggered when the
sensor reading exceeds the specified temperature value.
Low Alarm
(XW-110 only)
This setting is used to set the trigger point for a low alarm condition. A low alarm is triggered when the
sensor reading falls below the specified temperature value.
Deadband
The deadband (hysteresis) prevents alarms from triggering excessively when the measurement value
vacillates around the trigger point. With high alarms, the measurement must fall below the high alarm
point minus the dead band before the high alarm will be triggered again. Likewise the deadband on the
low alarm requires the measurement to rise above the low alarm point plus the deadband before the low
alarm will be triggered again.
For example, if the dead band is set to 0.5°C, and a high alarm is set at 13°C, the high alarm will occur
at 13°C; however, it will not turn off until the temperature drops below 12.5°C (13°C - 0.5°C).
Page 34
Xytronix Research & Design, Inc.
Summary of Contents for XW-110
Page 1: ......
