File Name
Strain Gauge and Vibrating Wire Pressure Transducers
Resource Type
Brochure| Language | Version | Download |
|---|---|---|
| English | ELB0032H |
|
| Spanish | ELB0071D |
|
Strain Gauge and Vibrating Wire Pressure Transducers
Strain Gauge and Vibrating Wire Pressure Transducers are used for uplift measurement in the foundation of concrete dams, overflow settlement measurement in earthfill and rockfill dams, and all other applications where a rugged and reliable pressure transducer is required for measuring fluid pressure in closed circuits.
Overview
Strain Gauge and Vibrating Wire Pressure Transducers are used for uplift measurement in the foundation of concrete dams, overflow settlement measurement in earthfill and rockfill dams, and all other applications where a rugged and reliable pressure transducer is required for measuring fluid pressure in closed circuits.
The pressure transducers come with either a 1/4” NPT thread or a 1/4” or 1/8” NPT port, for easy connection to pipes or other components of the hydraulic circuit to be monitored. Both transducers can be read dynamically if required by the application.
Highly reliable lightning protection is standard for the strain gauge transducer and for the vibrating wire transducer.
SPECIFICATIONS: STRAIN GAUGE TRANSDUCER
| ITEM | SPECIFICATION |
| Accuracy | ±0.1% FS |
| Standard Pressure Ranges | 0.035 MPa through 103 MPa |
| Compensated Temp. Range | -10°C to 80°C |
| Field Rangeability | Yes |
| Signal Output | 4-20 mA 0-5 VDC 0-10 VDC 4-20 mA + RS485 0-5 VDC + RS485 |
| Temperature Output | Optional |
| Wetted Materials | Standard 316L SS Polyamide Fluorocarbon |
| Electrical Termination | Sealed Cable |
| Dimensions | 109 mm X Ø25 mm |
| NPT Thread | 1/4 inch male with a 1/4” or 1/8” NPT thread |
SPECIFICATIONS: VIBRATING WIRE PRESSURE TRANSDUCERS
| ITEM | SPECIFICATION |
| Over range | 1.5 X F.S. |
| Resolution | 0.025% F.S. minimum |
| Accuracy | 0.1% F.S. |
| Standard Pressure Ranges | 0.07 through 20 MPa |
| Operating Temperature | -20 to 80°C (-4 to 176°F) |
| Diaphragm Displacement | <0.001 cc at F.S. |
| Thermal Zero Shift | <0.05% F.S./°C |
| Materials | Hermetically sealed stainless steel housing |
| Thermistor Type | NTC 3K Ohms @ 25°C |
| Thermistor Interchangeability | ±0.2°C |
| Thermistor Resolution | 0.1°C |
| Dimensions | 150 mm X 25 mm |
| NPT Thread | 1/4 inch female with a 1/4” or 1/8” NPT thread |
Strain Gauge and Vibrating Wire Pressure Transducers are commonly used for:
- Uplift pressure measurement in concrete dam foundations.
- Retrofit of earth-fill dam settlement systems.
- Fluid pressure measurement in closed circuits.
Ordering Info: Strain Gauge and Vibrating Wire Pressure Transducers
STRAIN GAUGE TRANSDUCER 1/4” NPT THREAD (0 – 3 MPa range)
| ITEM | PART # |
| 4-20 mA output – Sealed | ELSGT610 |
STRAIN GAUGE TRANSDUCER 1/4” NPT THREAD (>3 MPa range)
| ITEM | PART # |
| 4-20 mA output – Sealed | ELSGT611 |
VIBRATING WIRE TRANSDUCER 1/4” OR 1/8” FEMALE NPT PORT
| ITEM | PART # |
| 0.07 Mpa Vibrating Wire Transducer with 1/4” or 1/8” female NPT Port | VW2180-0.07-TEPC VW2180-0.07-SS |
| 0.17 Mpa Vibrating Wire Transducer with 1/4” or 1/8” female NPT Port | VW2180-0.17-TEPC VW2180-0.17-SS |
| 0.35 Mpa Vibrating Wire Transducer with 1/4” or 1/8” female NPT Port | VW2180-0.35-TEPC VW2180-0.35-SS |
| 0.7 Mpa Vibrating Wire Transducer with 1/4” or 1/8” female NPT Port | VW2180-0.7-TEPC VW2180-0.7-SS |
| 1.0 Mpa Vibrating Wire Transducer with 1/4” or 1/8” female NPT Port | VW2180-1.0-TEPC VW2180-1.0-SS |
| 2.0 Mpa Vibrating Wire Transducer with 1/4” or 1/8” female NPT Port | VW2180-2.0-TEPC VW2180-2.0-SS |
| 3.0 Mpa Vibrating Wire Transducer with 1/4” or 1/8” female NPT Port | VW2180-3.0-TEPC VW2180-3.0-SS |
| 5.0 Mpa Vibrating Wire Transducer with 1/4” or 1/8” female NPT Port | VW2180-5.0-TEPC VW2180-5.0-SS |
| 7.5 Mpa Vibrating Wire Transducer with 1/4” or 1/8” female NPT Port | VW2180-7.5-TEPC VW2180-7.5-SS |
| 10 Mpa Vibrating Wire Transducer with 1/4” or 1/8” female NPT Port | VW2180-10-TEPC VW2180-10-SS |
| 20 Mpa Vibrating Wire Transducer with 1/4” or 1/8” female NPT Port | VW2180-20-TEPC VW2180-20-SS |
| Contact RST for larger pressure ranges if needed. | |
Electrical Cable
| ITEM | PART # |
| Two twisted pairs cable with polyurethane jacket. | EL380004 |
Readout
| ITEM | PART # |
| Vibrating Wire Readout – VW2106 | VW2106 |
| 5/10 Channel 4-20MA Transmitter Data Logger/Thermistor Data Logger | DT4205 |
| RSTAR Affinity Data Logger |
Additional Ordering Info
| Cable length required. |
| Pressure range. |
| Output type. |
Speak with an Expert
I’m very happy with the quality of the instrumentation and technical support from RST, as always. They worked with us from the initial stages of the project to ensure that we were fully prepared and equipped to use the RSTAR network for the first time. They delivered everything within the tight project time frame to ensure that there were no delays on site, and the submersible tilt meters looked like new even after over twelve months of being submerged in Thames water!
-Richard Lipscombe, BEng (Hons), Director & Principle Consultant - RL Geotechnical Ltd