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E1 Gauge – Digital crackmeter
If you would like a quotation or have any questions about the product, please contact us:
- by email at info@saugnac-gauges.com
- by telephone on +33 9 62 07 18 68
304,50€ w/o VAT with 5 pairs of P1E1 plates (for 5 cracks)
Made in France
0.01 mmDigital readout
1 or 2 axesOpening and shear
Reading trackingSaugnac.app application
Discreet, removableTransparent plates| Resolution | 0.01 mm with digital readout |
|---|---|
| Repeatability | ±0.01 mm |
| Type of reading | Manual on-site reading (no automatic data transmission) |
| Type of monitoring | Monitoring the evolution of cracks on 1 or 2 axes |
| Type of crack | All types of cracks |
| Mounting | The plates are fixed using the impact anchors supplied. Can also be bonded with fast-curing epoxy adhesive |
| Dimensions | E1 gauge: 220 mm (length) × 60 mm (width) × 30 mm (height) E1 plates: 33 mm (diameter without tongue) × 9 mm (thickness) |
| Plate material | PA12 |
| Fixing pin material | Hard anodised aluminium |
| Measurement range | Approximately 25 mm (possible variation between the maximum and minimum reading) |
| Weight | 210 g |
The E1 gauge is a removable digital crackmeter for manual crack monitoring on 1 or 2 axes — also referred to as a digital crack monitor — with a resolution of 0.01 mm and a repeatability of ±0.01 mm. At each site visit, you read the displayed value yourself and record it in the Saugnac.app application.
Its patented system uses 2 transparent plates mounted on either side of the crack with the template supplied (3 plates for 2-axis monitoring). Once the gauge has been zeroed on the reference standard supplied, it is positioned in the transparent plates to take the reading.
The plates are made from a material (PA12) that is highly resistant to the elements (rain, sea spray, UV). This material is commonly used for highly exposed parts, such as car headlights, watch windows, boat parts, spectacle frames and control panels.
Its unique fixing system allows installation configurations with a high degree of offset (up to 35 mm), in corners or on a ceiling, without having to hold the gauge when taking measurements.
Once the measurement has been taken, only the transparent plates remain on the surface. Each pair of plates supplied has a QR code and a unique identifier so that measurements can be tracked using the Saugnac.app application supplied.
The E1 gauge is supplied in a quality case for easy storage and transport, containing:
The plates are fixed on either side of the crack and are used to position the E1 gauge during measurement. The plates are transparent and therefore barely visible. They are less than 10 mm thick, so they take up very little space. The PA12 material used guarantees high resistance to weathering (rain, UV) without deterioration.
Fixing is mechanical, using the Ø 4 mm impact anchors supplied. Each plate has a Ø 4 mm hole in the centre, which makes mechanical fixing straightforward. Ø 4 mm holes 30 mm deep must be drilled at the marks obtained with the installation template supplied.
The 4 mm diameter makes it easy to drill the hole on any surface. Simply pass the impact anchors through the plate into the hole, tap with a hammer, then finish with the PZ1 screwdriver.
It is also possible to bond the plates in place using a fast-curing epoxy adhesive. This adhesive holds after 4 minutes, but its final cure takes 2 hours: wait until then before taking the first measurement, so that the plates can no longer move. Since the resolution of the E1 gauge is one hundredth of a millimetre (0.01 mm), repeatability at that level depends on the quality of the fixing.
Manual monitoring of a single-axis crack with the E1 crackmeter is simple. At each site visit, you take the reading yourself.
First, the pair of 1-axis plates (P1E1) must be fixed on either side of the crack (see above). 5 pairs of P1E1 plates for 1-axis tracking are supplied with the E1 gauge, and boxes of 5 pairs of P1E1 plates can be purchased to monitor further cracks.
The crackmeter must then be zeroed on the reference standard supplied: the E1 works by comparative measurement against that standard. Always zero the gauge on the standard before taking a measurement on the plates. We recommend carrying out this operation directly in the case, so that the standard lies flat.
Position the crackmeter in the plates and take the measurement. The difference between two measurements gives the evolution of the movement. You then record the reading manually in the Saugnac.app application.
For reliable results, we recommend releasing any mechanical stress after each positioning and systematically taking three consecutive measurements, then calculating their average.
Measurements are easily tracked in the Saugnac.app application. Each plate supplied has a unique QR code, which makes measurements traceable by associating a measurement history with a given plate.
The E1 fixing system allows the gauge to be fitted in corners. The 1-axis installation template supplied can be used to determine the reference points for angled mounting. Simply position the gauge in the plates to read the measurement and transfer the values to the Saugnac.app application.
The E1 crackmeter can monitor cracks along 2 axes, that is, both crack opening and shear. This may be the case, for example, where the ground has partially subsided (illustrative example on the left).
To monitor a crack or a movement of this type, use the E1 gauge together with the P2E1 plates for 2-axis tracking and the Saugnac.app application, which performs the calculations.
The P2E1 plates work in the same way as the P1E1 plates (identical fixing and positioning), but are supplied in sets of three.
Using the 2-axis template supplied, the P2E1 plates are fixed at the 3 points A, B and C. Measurements AB, AC and BC are taken the first time. Subsequent measurements are taken only on AB and AC, since BC does not vary.
The Saugnac.app application projects these values into an orthonormal X, Y reference frame and derives the movement on those 2 axes. The corresponding X, Y reference frame is shown on the template so that it can be identified without ambiguity. We recommend taking a photo of the plates with the template in front of you, to clearly identify plates A, B and C as well as the X and Y axes — it makes later measurements and their interpretation easier.
Any position is possible (vertical, horizontal, oblique or angled crack), by positioning the template according to the crack. Example of positioning the gauge and plates to follow an angled crack on 2 axes:
The Saugnac web application, completely free and with no restrictions, is available on PC or smartphone from https://saugnac.app. Thanks to the unique identification of each pair of P1E1 plates (for 1-axis tracking) or set of three P2E1 plates (for 2-axis tracking), manually recorded measurements can be associated with each survey point. The application allows you to:
Find out more about how the application works.
No. The E1 is a removable crackmeter for manual reading. You take each measurement yourself on site, then record the reading in the Saugnac.app application. There is no automatic data collection or transmission. For remote monitoring with automatic readings, the R1 wireless crackmeter is the product designed for that purpose.
The E1 is designed for manual crack monitoring: you measure yourself at each site visit and get a digital readout with 0.01 mm resolution. The R1 measures continuously and transmits data automatically over an LTE-M / NB-IoT module, which suits hard-to-reach structures and long-term monitoring.
The E1 offers a resolution of 0.01 mm and a repeatability of about ±0.01 mm under ideal conditions and with perfectly reproducible handling. This level of precision makes the device sensitive to the slightest variation in positioning and handling: repeatability therefore depends on the quality of the plate fixing as well as on careful, consistent measurement. We recommend releasing any mechanical stress after each positioning and systematically taking three consecutive measurements, then calculating their average.
Yes. Combined with the P2E1 plates, it can measure both the opening and the shear of a crack. The Saugnac.app application then derives the movement in an orthonormal X, Y reference frame.
Yes. The patented fixing system allows installation in corners, on ceilings or with a high degree of offset (up to 35 mm), without having to hold the gauge when taking measurements.
Yes. The transparent plates are made from PA12, a material that is particularly resistant to the elements (rain, UV), making them suitable for both indoor and outdoor applications. The gauge itself, however, is a removable measuring instrument that is not intended to remain outdoors: after each reading, it is removed from the plates and stored in its carrying case. Only the transparent plates stay in place on the surface.
Box of 5 pairs of 2 P1E1 plates for tracking on 1 axis. Accessories for E1 gauge.
Box of 5 triplets of 3 P2E1 plates for 2-axis tracking. Accessories for E1 gauge.
Fast-curing epoxy adhesive in a twin-syringe for reinforced bonding in cases of significant surface roughness or high moisture
If you would like a quotation or have any questions about the product, please contact us: