These flow-metres are designed for gases.
Viscosity variations have less effect on results thanks to a specific profile of the diver.
The transmission of the diver position to the display is magnetically operated.
The small distances between the connections allow an easy location in a small volume.
A dumper option is available for low nominal pressures where pulses on pressure could affect the accuracy.
As options there are a transmitter 4-20 mA two wires model and alarm contacts.
For ATEX area, two versions are certified, intrinsically safe EEx ia and explosion proof EEx d.

For a correct operation, the flow must be vertical and upward.
The gas passes through a diaphragm pushing a conical. The diver position is at the equilibrium point between the kinetic energy due to the speed of the fluid and the diver weight, profile and diaphragm geometry.
- Each balance point corresponds to a flow rate value.
- Flow rate transmission is done with a magnetic transmission.

Indicator with or without alarm contacts (standard)

Scale range: 1 to 10
Analogical scale length: 80 mm
Accuracy: +/- 1.5% full scale (standard)
Repeatability: 0.5% full scale
Maximal pressure: 40 bar (higher pressures on request)

Temperature limits:
-10 ... +150°C without alarm contacts
-10 ... +100°C with alarm contacts
-30 ... +300°C high temperature version (with and without alarm contacts)

Process connections: Flanges PN 16 UNI 2223/29 (standard); threads BSP, NPT, Triclamp
Wetted parts: Stainless steel 316 L, PTFE – on request: Titanium, Hastelloy C
Display housing: Cast aluminium, epoxy painted RAL 7001
Protection: IP 67
OPTIONS: Inductive contacts (adjustable all along the scale) with 8 V CC power supply

Indicator with transmitter

Scale range: 1 to 10
Analogical scale length: 80 mm
Accuracy: +/- 1% full scale (standard)
Repeatability: 0.5% full scale
Programmable display: LCD, 8 digits (flow rate, %, totalization)
Response time: < 0.5 s (only the electronic)
Analogical output: 4-20 mA, 2 wires
Hart protocol transmission: optional
Main power: 24 V DC +/-10%
Alarm contacts: optional, 1 or 2 adjustable contacts
Maximal pressure: 40 bar

Temperature limits:
-10 ... +90°C without alarm contacts
-10 ... +90°C with alarm contacts
-30 ... +300°C high temperature version (with and without alarm contacts)

Process connections: Flanges PN 16 UNI 2223/29 (standard); threads BSP, NPT, Triclamp
Wetted parts: Stainless steel 316 L, PTFE – on request: Titanium, Hastelloy C
Display housing: Cast aluminium, epoxy painted RAL 7001
Protection: IP 67

OPTIONS:
ATEX Certification EEx ia IIC T6 (Intrinsically safe)
ATEX Certification EEx d IIB T4 (Explosion proof)