SENSORS & GAS SYSTEMS

SENSORSSENSORS

D E G ITA L A N A L O G

S E N S O R S C A TE G O R IE S

Degital Sensors

Depth Wheel.Stroke Counter.Degital RPM.

Analog sensors

HOOK LOAD.Use a pressure

transducer and normally installed on the dead line anchor system

exitation is 24DCVthe out put is 4 - 20

ma

Analog sensors

STAND PIPE PRESSURE.

1 -Use Dynisco Strain Gauge Transducer

4 wires

exitation is 15DCV.

2 -Current Loop:

Very similar to hookload.

Exit. 24v, out put 4-20ma

2 wires.

TorqueTorque

11 . .ElectricElectric

measures the rotary measures the rotary table current in table current in amperesamperes..

22 . .MechanicalMechanical

Very similar to Very similar to hookloadhookload..

Exit. 24v, out put 4-Exit. 24v, out put 4-20ma20ma..

RPMRPM

The unit consists of a small low-power D.C. generator. This generator is driven via a belt and pulley from the rotary table drive shaft.

The unit produces 7 VDC per 1000 Revolution Per Minute (RPM).

Pit VolumePit Volume

11 . .DelavalDelaval::use a non contacting magnetic float activate discrete reed switches in reed switch resistance string inside a stainless steel pole. The position of the float determines the resistance and hence the voltage fed to the computer.

22 . .Ultra sonicUltra sonic::

Flow OutFlow Out

11 . .PadlePadle

use a 10kom, 1 turn use a 10kom, 1 turn potentiometerpotentiometer..

- -1010 DCV exitationDCV exitation

- -11 - - 1010 DCV signalDCV signal..

22 . .EWSEWS::

measure the flow measure the flow through generating through generating induction voltage in a induction voltage in a

magnetic fieldmagnetic field . .

TemperatureTemperature

Either semiconductor Either semiconductor thermistor thermistor transducers or transducers or platinum resistance platinum resistance elements (PRT)elements (PRT)..

8.58.5 volt excitation volt excitation voltage. output voltage. output between 270 and 370 between 270 and 370

microampsmicroamps . .

ConductivityConductivity

The out put signal is The out put signal is between 4 - 20 mabetween 4 - 20 ma..

Gas TrapGas Trap

The mud trap assembly comprises an electric motor, impeller and trap chamber.

110 volt power is supplied to the motor from the unit and the wattage used is monitored to indicate the status of the trap in the mud.

FID Gas SystemFID Gas System