Transmitters, signals and control valves
The field devices between the process and the control system: what they do, how to set them up and how to size them.
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Loop Checking & Commissioning
Step-by-step loop checks for analog and discrete I/O, valves, records and common faults.
Open → NewHART Communication
FSK on 4–20 mA, the 250 Ω resistor, multidrop, DD/DTM files and troubleshooting.
Open → NewValve Stroke Testing & Positioner Calibration
Interactive valve, auto-calibration, stroke and fail-safe tests, deadband, signatures.
Open →Transmitters & Signals
4–20 mA, HART, NAMUR NE 43, loop power and fieldbus.
Open →Control Valves & Valves
Types, characteristics, actuators, positioners, Cv sizing, cavitation.
Open →Communication Protocols
HART, FOUNDATION Fieldbus, PROFIBUS, Modbus and Ethernet.
Open →See it work
Control Valve Sizing & Cavitation
Size a valve and watch clean flow, cavitation, flashing and choked flow.
Open →4–20 mA Current Loop
Current, 250 Ω voltage and DCS reading; break the wire, fail the sensor.
Open →Tools
Valve Stroke Check
Forward / reverse action, mA ⇄ travel, stroke-test pass/fail.
Open →Solenoid Coil Check
Phone-compass magnetic test and coil resistance check.
Open →Control Valve Sizing
IEC Cv for water, oils, gas and steam by valve style.
Open →4–20 mA Signal Scaler
mA ⇄ % ⇄ engineering units.
Open →Transmitter Re-range
New LRV/URV and the matching outputs.
Open →Loop Power Check
Supply voltage, loop resistance and HART.
Open →DIP Switch & Binary
Device addresses: decimal ⇄ binary ⇄ hex.
Open →