The E-M Flowmeter tool is used in the environmental and hydrology
industries to measure fluid movement in a borehole. It incorporates
Quantum Engineering’s "EBF" electromagnetic sensor, The instrument
measures flow rates using the principal of Faraday's Law of Induction.
The downhole probe consists of an electromagnet and two electrodes
located 180 degrees apart and 90 degrees to the magnetic field inside of a
hollow cylinder. The voltage induced by a conductor moving at right angles
through the magnetic field is directly proportional to the velocity of the
conductor (water) through the field. The tool is capable of measuring low
velocity flow rates down to less than 50 ml/min and increased flow rates to
40 liters/min, through the tool's 1 inch inside diameter sensor. When using
the tool to measure low velocity flow rates a rubber skirt is attached to the
outside of the sensor to block off the bore hole and force the fluid to pass
through the 1 inch diameter opening inside the sensor coil. The Compu-
View Software program is designed to allow the automatic collection of
data at selected static stations in the borehole. When measuring faster
flow rates the rubber skirt is typically removed and the tool is run in either
the static station or dynamic mode. The tool has no moving parts.
FEATURES
Properties Measured
1. Flowmeter: Electromechanical
Offset: 139.7 cm (55.0 in.)
2. Fluid Resistivity: Offset: 139.7
cm (55.0 in.)
3. Temperature & Delta
Temperature :
Offset: 139.7 cm (55.0 in.)
Length: 142 cm (56.0 in.)
Temperature: 60 C (140 F)
Diameter: 41.3 mm (1.625 in.)
Sensor Housing: 50.8 mm (2.0 in.)
Weight: (13.5 lbs.)
Tool Voltage Required: 64 VDC
TOOL#: 9721
