G F M 4 0 0 S E R I E S U S E R M A N U A L
In the case
The GFM400 series instruments are supplied in a fitted case containing the
following items:
GFM400 instrument
Vane
anemometer
(optional)
Spares kit
Battery charger
GFM400 Series
2
Specification
GFM400
GFM410
GFM420
GFM430
Common features
Infra red CH4 analysis
0-100%
LEL
0-100%
Infra red CO2 analysis
0-100%
Electrochemical O2 analysis
0-25%
Atmospheric pressure
800 to 1200 mbar
User spec’d gas channels
Static (Gauge) Pressure
±
400 mbar
Vane anemometer input
0.07-40.0
m/s
Temperature probe input
-10-100c
Orifice plate and pitot tube
interface
Flow Range
0.1 to 1000
m3/hr
Pipe diameter range
0.1 to 3000 mm
Flow Resolution
0.1 m3/hr
Differential Pressure
±
3000 Pa
Borehole (Low) Flow
measurement
Flow Range
+30/-30 l/hour
Flow Resolution
0.1 l/hour
Borehole Pressure
+1000/-1000 Pa
(Typical)
gas pipe
GFM400 Series User Manual
