Measuring Principle
Measurement of the level is obtained by determining the hydrostatic pressure that is the hydrostatic level acting on the piezometric sensor membrane.
The output signal is transmitted via cable to a local manual or automatic readout unit and, if automatic, transmitted from there to a remote control central unit.
The simplicity and ease of use of the sensor allow it to be used in various applications, suitable for many requirements, to realize different applications, specific to each individual need.
System composition:
Piezometric level meter for external use, by direct immersion, no more accessible after installation
The fitting can be straight or angled; the device can be with locked or removable sensor.
Piezometric level meter for internal use, with pressure taking group and sensor always accessible.
Installation is generally in dam tunnels or on the outside of tanks, with the realization of a direct taking pressure group .The sensor is supplied in protective casing with taking pressure group, siphon and auxiliary Bourdon type manometer .
Technical Specifications
| Measuring Range(mt H2O) |
30,50,10,150,200,300 (other ranges on request) |
| Accuracy |
<±0,1 % f.s. |
| Resolution |
0,02% f.s. |
| Linearity |
<0,4% f.s. |
| Operative Range (Hz) |
350-1200 |
| Temperature drift |
0,025% f.s. every °C |
| Material of the sensor |
Stainless steel AISI 304 |
| Production |
Electrowelded |
| Dimensions |
35mm x 110mm |
| Weight |
750 gr |
| Sealing of the membrane |
By welding |
| Sealing of the cable |
By weld metal glass, resin and cable sleeve |
Wiring
| Cable type |
Rubber insulated FG70Gtpv/450-750 V 90 °C LSZH |
| Conductors |
2 x 1 mm² ; 3 x 1 mm² |
| Cable O.D. |
11 mm |
| Permissible maximum traction |
15 N/mm² for movable installations; 50 N/mm² for fixed installations |
| Weight for 100 m |
3 x 1 mm² : 18 kg – 2 x 1 mm² : 16 kg |
Internal bridge sensor
| Measuring Range |
1 ÷ 200 m H₂O (higher ranges upon request) |
| Accuracy |
≤± 0,25% f.s.; ≤± 0,1% f.s.; ≤± 0,05% f.s. |
| Overload |
3 x f.s. |
Thermal Drift [± % F.S. /°C]
-Zero: 0…+70 °C
-Span:0…+70 °C |
0,06 … 0,2
0,02 |
| Long-term stability (1 year) |
<0,2 % f.s. for ranges > 1 bar – 4 mbar for ranges 0,5 <1bar |
| Operating temperature |
-5…+50°C |
| Fluid temperature |
-5…+50°C |
| Power Supply |
9…30 Vdc |
| Output signal |
4-20mA |
| Pressure sensor material |
AISI (ceramic upon request) |
| Instrument body material |
Stainless steel 316 (titanium upon request) |
| Cable material |
PUR with compensation tube |
Related products
| Tubular element for sensor protection |
For outdoor applications; in stainless steel |
| Containment and protection box |
For indoor applications; accessible; GEWISS in resin |
| Auxialiary Bourdon Manometer in class 1 |
For indoor applications |
| Syphon and taps |
For indoor applications |
Technical Assistance
If you have any requests or questions about our instruments or if you have special needs that require different solutions from the standard, please contact us. Our team will provide all the necessary information and will be very happy to work with you to study, develop and customize instruments and solutions suitable for your specific needs.
All information in our datasheet is subject to change without prior notice.
Please check the datasheet/details carefully and contact Pizzi Instruments for further information
