MAN0923_Issue 3_04/15
Touchpoint Pro
Operating Instructions
193
15. Appendix 2 - Configurable
Parameter Reference Guide
15.1.3 Sensor Settings
Access Level: Administrator
Parameter Name Default Setting
Value Range
Comment
Gas Name
“Gas”
Maximum 10 Alphanumeric Characters
Gas Unit
“%FSD”
%FSD, %LEL, % Vol., ppm, ppb, mA, mV, mg/
m3, LEL.m or maximum 5 Alphanumeric
Characters
FSD – Full Scale Deflection
LEL – Lower Explosive Limit
LEL.m – LEL metres
15.1.4 Range Settings
Access Level: Administrator
Parameter Name
Default Setting
Value Range
Comment
Signal Range Min
4 mA
0.5 mA to 4 mA
X1 = Signal Range Min (Electrical Input from Sensor)
X2 = Signal Range Max (Electrical input from Sensor)
Y1 = Gas Range Min
Y2 = Gas Range Max
Gas concentration (y) is calculated as follows:
y = (((Y2-Y1)/(X2-X1))*(x-X1))+Y1
Signal Range Max
20 mA
12 mA to 24 mA
Gas Range Min
0
Sensor / Unit specific
Gas Range Max
100
Sensor / Unit specific
15.1.5 Display Settings
Access Level: Administrator
Parameter Name
Default Setting
Value Range
Comment
Peak Hold Enable
Disabled
Enabled / Disabled
If “Peak Hold” is enabled, and the gas reading rises above
the configured full scale value, the channel will display the
maximum gas reading that has been measured until it is reset
Note: The number of decimal places to be displayed is determined by the Gas Range Max setting as follows:
Gas Range Max
Decimal Places
≥
100
0
≥
10 and < 99
1
< 10
2
This is also the resolution at which data will be logged for the trend report.
