Sensors Flashcards
1
Q
Why Use Sensors?
A
- Operational credibility
- Better understanding of what is happening
- Ease of operation
- Performance of equipment
- Quality assurance
- Safety
- Mass balance
- Process control
2
Q
Measures
A
- Density +
- Pressure +
- Temperature
- Flow Rate +
- Revolutions
- pH
- Viscosity
- Electrical conductivity
- Solid concentration (by direct measurement) Concentration of various chemicals
3
Q
What do we have to measure in CemCAT
A
- Density
- Pressure
- Rate
4
Q
Two types of sensor signals are used:
A
- Analog Sensors (4 to 20 mA or 0 to 20 mA)
- Frequency Sensors (0 to 12 volt pulses)
5
Q
Types of measures reciver device?
A
- DCU Distributed control unit (Rate - Sensors)
- JAB (We use it)
6
Q
signals of the JAB
A
Analog Signals
- Pressure
- Density
- Auxiliary 1
- Auxiliary 2
Frequency Signals
- Mixing Rate
- Downhole Rate
7
Q
Density Measurements methods
A
- Mud balance
- Non-pressurized (“Baroid”)
- Pressurized
- Coriolis type –
- Non Radioactive Densitometer (NRD)
8
Q
NRD calibration
A
- Recalibrate after ± 1 year
- Pre-job requirement: meter-zeroing
9
Q
Pressure Measurement Methods
A
- Strain gauge
- Viatran
- Bourdon tube
- Martin Decker
- Totco
10
Q
Flow Rate Measurement Methods
A
- Electromagnetic flowmeter
- Coriolis flowmeter
- Electromechanical devices
- Tachometer
- Stroke counters
- Proximity switch
11
Q
Hazardous Area Classification
A
- Zone 0 always gas
- Zone 1 likehood of gas
- Zone 2 no likehood of gas
12
Q
Advabntage of NRD
A
Independent i dont know what more
13
Q
Aditional components of a Solids Fraction Monitor Equipment
A
- Water Flow Meter
- Tub Level Sensor
- Slurry Flow Meter (e.g existing NRD)
