MAN0923_Issue 3_04/15 Touchpoint Pro
Operating Instructions
202
15. Appendix 2 - Congurable
Parameter Reference Guide
15.2.3 Sensor Settings
Access Level: Administrator
Parameter Name Default Setting Value Range Comment
Gas Name “Gas” Maximum 10 Alphanumeric Characters
Gas Unit “%FSD” %FSD, % 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
Bridge Current 200 mA 180 to 360 mA
15.2.4 Range Settings
Access Level: Administrator
Parameter Name Default Setting Value Range Comment
Signal Range Min 0 0 mV to 100 mV 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
Note: Signal Range Min and Max are over-written
during calibration, and are then no longer editable
Signal Range Max 100 5 mV to 300 mV
Gas Range Min 0 Sensor / Unit specific
Gas Range Max 100 Sensor / Unit specific
15.2.5 Display Settings
Access Level: Administrator
Parameter Name Default Setting Value Range Comment
Peak Hold Enable Enabled 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.
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