The OPTISWIRL 4070 is the first vortex flowmeter to feature integrated pressure and temperature compensation in 2-wire technology.
The OPTISWIRL 4070 provides reliable measurement of operating, standard volumetric and mass flow of conductive and nonconductive liquids, gases and vapours, even with fluctuating pressures and temperatures
KROHNE Vortex Flowmeter
Type OPTISWIRL 4070/C
compact system for steam, gas and liquid applications
Sensor sizeDN100 / 4"
flange connection onDN100 PN40
for flange normEN1092-1
Sealing Surfaceshape B1
Gas / liquid
max.pressure PS [bar]40
Test pressure PT [bar]76
notified body (PED)0035
SIGNAL CONVERTER VFC070
mounted to primary head
Powder coating on polyester base
power supply14 ... 36VDC 2-wire
output4 ... 20mA
Firmware-Version for the uncompensated measurement
of gases and liquids respectively density
compensation for saturated steam via integrated
temperature sensor based on the saturated steam table.
ident. sign st.steel, dim. 40 x 20mm
ident. tag no.
Certificate of compliance acc. to EN10204-2.1
Calibration Certificate with 3 pt. Certification
medium NATURAL GAS
density operation3.65543 kg/m3
density normal0.82 kg/Nm3
measured range423 ... 3300 Nm³/h
norm temperature15,0 °C
norm pressure0 bar g