MULTIPLE ROD EXTENSOMETER – dExto
YieldPoint’s unique 1 to 6-Point Multiple Rod Extensometer (d-Exto) combines a traditional Multi-Rod design ( robust torsionally straightened stainless steel) and digital signal processing to result in dramatically improved accuracy and reliability compared to similarly priced existing technology. This highly accurate digital instrument comprises up to six (6) Linear Variable Induction Transducers (LVITs) and an on-board digital temperature sensor.
Description
Design features of the d-Exto include a tough fiber glass tube, an internal rubber spacer to ensure that central core which will not be damaged by shear movements of up to 10mm all inside a strong and durable than polyethylene sheath. The hermetically sealed (double potted on request) electronics operate indefinitely when submerged in water.
The inherently digital nature of the signals eliminates the necessity for expensive analog-to-digital conversion and results in low cost readout unit that reads data directly in real world units (mm and °C). The sensor output is an ASCII (9600,8,N,1) digital signal which can be read by a low cost readout unit (d-Reader), dataloggers (BluLink and BluLoggers), and backhauled using (i) Ethernet/Wifi, (ii) LTE-M cellular or (iii) 900MHz(ISM) d-Mesh for transmission to cloud based storage and visualization (VantagePoint).
SPECIFICATIONS:
- Key Feature: Fully integrated and preassembled borehole extensometer
- Dimensions: 25mm diameter can be placed in 50mm hole.
- Dimensions: Up to 6 Anchor points over lengths up to 30m
- Disp. Range: 125, 150 (standard), 200 and 250mm.
- Disp. Accuracy: typically 0.5% F.S(<10m) and 1% linearity (>10m). Depends on distance between anchor point and head.
- Temp. range: -40 to 125 oC
- Output Signal: RS485 with transmission up to 500m over 2 x tp.
- Output Signal: Asynchronous serial signal – 9600,8,N,1. ASCII encoded. Values and units transmitted.
Additional information
| Brands | |
|---|---|
| Anchor points |
1 ~ 6 |
| Range |
150-250mm |
| Resolution |
0.01 mm |
| Overall Accuracy |
0.35%FS or 0.5mm |
| Temp. range |
-40 to 125 °C |
| Temp Resolution |
0.1°C |
| Output in real world units |
mm |
| Output |
RS485 |
Reviews (0)
About brand
Yieldpoint is a leader in the design, manufacture and support of geotechnical monitoring solutions with the highest quality and reliability and at the best possible price for civil and mining.
Data Sheets
Related products
OPTICAL DISPLACEMENT SENSOR NODE
In stock
NANO TRIAXIAL TILT SENSOR
In stock
The Nano range uses the same core platform as our other tilt sensors, so it can deliver a similar level of performance and reliability, all in a small and robust enclosure. Nanos have been successfully used in many applications, including:
- Tunnel distortion
- Tunnel heave/settlement
- Embankment slippage (used in conjunction with stake mounts)
- Structural movement
- Rail track heave/settlement
- Rail trackbed cant and twist
TRIAXIAL TILT SENSOR NODE
In stock
IN-PLACE TILT METER MEMS
In stock
IN-PLACE INCLINOMETER (IPI)
In stock
DIGITAL PIEZOMETER – dPiezo
In stock
STANDPIPE PIEZOMETER
In stock
TILT BEAM MEMS
In stock
MEMS Tilt Beams are designed for attachment to structures, on either a vertical or horizontal surface, for the measurement of tilt or differential settlement.
They consist of a highly accurate MEMS sensor housed in a fully sealed enclosure which is mounted on a lightweight rigid GRP beam. This can be mounted onto the structure using special anchors. The GRP beam has a very low coefficient of thermal expansion meaning that thermal affects are minimised.
Reviews
There are no reviews yet.