Endress+Hauser Gammapilot FMG50 - 2.4 Product Safety Marks

Gammapilot FMG50
14 Endress+Hauser
Operation via HART
• With Field Xpert SFX350/SFX370
• With the Commubox FXA195 and the "FieldCare" operating program
Operation via WirelessHART
SWA70 WirelessHART adapter with the Commubox FXA195 and the "FieldCare" operating program
Operation via Bluetooth LE and "SmartBlue APP"
Local operation outside the radiation path
A0039186
Input
Measured variable
The Gammapilot FMG50 measures the pulse rate (number of pulses per second). This rate is
proportional to the intensity of radiation at the detector. The Gammapilot M calculates the measured
value from this rate:
• Point level (0% = "radiation path free"; 100% = "radiation path covered")
• Level (in % or selectable units)
• Position of interface (in %)
• Density (selectable unit)
• Concentration (selectable unit)
Pulse rate:
Max. 60000 cnt/s
Sensitivity
The sensitivity indicates which pulse rate occurs at a local dose rate of 1 µSv/h. The sensitivity
depends on the following parameters:
• Type of scintillator
• Measuring range
• Isotope used
NaI (TI) scintillator
Sensitivity with lateral irradiation:
•
137
Cs: 675 [(cnt/s)/(µSv/h)] per "inch" measuring range
•
60
Co: 450 [(cnt/s)/(µSv/h)] per "inch" measuring range
• K
2
O: 10 [(cnt/s)/%K
2
O] per "inch" measuring range
PVT scintillator
Sensitivity with lateral irradiation
•
137
Cs: 10 [(cnt/s)/(µSv/h)] per "mm" measuring range
•
60
Co: 5 [(cnt/s)/(µSv/h)] per "mm" measuring range
Typical pulse rates
A radiometric measuring point should be designed in a way such that the following pulse rates,
approximately, are obtained:
Level measurement (with empty vessel)
• 2500 cnt/s for
137
Cs
• 5000 cnt/s for
60
Co
Point level detection (with free radiation path)
• 500 cnt/s for
137
Cs
• 1000 cnt/s for
60
Co