Honeywell XYR 6000 User Manual page 23

OneWireless™ Series User Manual
Step Action
The following step contains an equation used to convert the engineering units. As as alternative to using
this equation you may use the file, "WCX1 Engineering Units Calculator" which can be found on the WCX
Series documentation CD that was included with the sensor.
2.5 Calculate the Engineering Units at 0% and 100% using the following equations:
EU
EU
Please note – the 317 value is a constant that is inherent to the setup of the device. The 100 value is a
ratiometric constant. These constants have no relevance to the user other than their use in the above
formula.
Example
With the valve at the desired 0% position the sensor output is reading 25.0 PCT and at the desired 100%
position, the sensor output is reading 75.0 PCT. The value for EU@0% and EU@100% would then be:
EU
EU
In Wireless Builder, in the Main tab, set Actual Mode to OOS. In the Range tab, input these two values in
2.6
the appropriate fields. After inputting the new EU Values, in the Main tab, set Actual Mode to AUTO.
2.7 Adjust the valve to the 0% position and confirm that the sensor output now displays 0 PCT. Do the same
at the 100% position.
3 Reset update rate.
3.1 In the Offline window, double-click on the WCX transducer block (small rectangle with a T inside), the
parameters page will open.
3.2 In the Configuration tab, change "Period" to 30 seconds. Click OK. Note: If a different update rate is
required by the application, it should be selected at this time, however maximum battery life will be
obtaining with the 30 second update rate setting.
3.3 In the Offline window, right-click on WCX Main block and click Load.
Ensure that "State to Load" is set to OOS and "Post Load State" is set to Normal, and both boxes at the
3.4
bottom of the window are checked. This will change the update rate on the sensor and re-load it.
3.5 In the Main tab, change "Actual Mode" to AUTO.
3.6 Unit is scaled correctly and is active.
100
= −
@ 0 % PV ( *
0 −
PV
100
100
=
@ 100 % (
−
PV
100
100
= −
@ 0 % 25 ( * )
−
75 25
100
=
@ 100 % ( * )
−
75 25
100
−
) ( * )
−
PV PV PV
0 100 0
100
+
* ) 317 (
−
PV PV
0 100
100
− = −
( * ) 4 58
−
75 25
100
+ + −
317 ( * ) 4
−
75 25
Issue 3
3.6. Setting the Range and Engineering Units
4
+
* ) 4 EU @ 0 %
PV
0
=
58 584
Honeywell Sensing and Control
50040849
3. 2BPreparation
17