01 · Unit Conversion
Pressure Unit Converter
Enter a value in any pressure unit — every equivalent updates live below.
| Unit | Equivalent value |
|---|
Show reference formula
value_Pa = value × factor[from_unit]
result_unit = value_Pa ÷ factor[result_unit]
e.g. 1 bar = 100 000 Pa · 1 psi = 6 894.757 Pa · 1 atm = 101 325 Pa
02 · Unit Conversion
Flow Unit Converter
Volume/mass unit and time unit are picked independently, then converted into every combination at once — not locked to a fixed list of unit+time pairs.
| Unit | / second | / minute | / hour | / day |
|---|
The highlighted cell matches what you entered above. Every other cell is that same flow rate re-expressed in a different unit/time combination — e.g. read the bbl row's / day column for oil bbl/day, or the MMSCF row's / day column for MMSCFD.
Show reference formula
value_base/s = value × unit_factor ÷ time_seconds
result_cell = value_base/s ÷ unit_factor[row] × time_seconds[column]
MMSCF uses standard conditions (60°F, 14.696 psia). Converting between volumetric and mass flow requires fluid density — not included here.
03 · Rangeability
Turn-Down Ratio Calculator
Compares the maximum and minimum usable value of a flow meter, control valve, or any rangeable instrument.
Show reference formula
Higher ratio → instrument holds accuracy over a wider range.
04 · Transmitter Sizing
Differential Pressure Level Calculation
Computes LRV / URV calibration points for a DP level transmitter from tank geometry and specific gravity.
SG1 process fluid · L span between taps · h transmitter offset below lower tap. The upper side is open to atmosphere, so only one process connection is needed.
SG1 process fluid · L span between taps · h transmitter offset below lower tap. The dry leg carries vapor pressure only — its length adds no column weight, so vapor pressure cancels out of the DP.
SG1 process fluid · SG2 wet-leg fill fluid · L span between taps · h transmitter offset below lower tap · H wet leg height, transmitter to upper tap. HP = process (dry, short leg) · LP = reference (wet, filled leg) — same layout as the diagram you shared.
Show reference formula
05 · Mag Meter Sizing
Velocity ↔ Flow Rate Converter
Converts between line velocity and volumetric flow rate for a given pipe internal diameter — sized for electromagnetic flow meters.
Show reference formula
Flow rate: Q = V × A
Velocity: V = Q ÷ A
Electromagnetic flow meters typically need 0.3–10 m/s line velocity for a reliable, low-noise signal — outside that band, accuracy and repeatability degrade even though the meter still reads.
06 · Signal Scaling
PV ↔ mA Converter
Convert between a process value and its transmitted analog signal using the calibrated range.
Show reference formula
Signal = Signal_lo + % × (Signal_hi − Signal_lo)
(Signal → PV runs the same equations in reverse.)


