FAQs

Yes. Sensly is built for multi-project management. All your monitoring projects live in one centralized platform, with customizable access rights per user or project.

Advanced encryption protects your sensitive data. Administrators can configure user access rights to prevent unauthorized changes or access.

Yes. Data can be exported for use in other modeling or analysis software. This also serves as a backup option.

Report creation uses a drag-and-drop interface with live previews. You can also set up automated scheduled reports delivered by email.

You pay per sensor on a monthly basis, billed quarterly in advance based on the agreed maximum number of sensors. There’s a one-time setup fee invoiced at the time of setup. Technical support is included. Customizations and additional modifications are available at an agreed hourly rate.

No. There’s no long-term contract required, and you can cancel at any time.

No. Sensly is fully cloud-based. There’s nothing to install, no servers to maintain, and no IT overhead. Updates happen automatically.

In soft ground applications, you might use a ratio of 6.6 water : 1 cement : 0.4 bentonite. This provides a 28 day compressive strength of about 4 psi. You should also consider using telescoping joints. These will accommodate settlement that would otherwise break the access pipe. They will also improve compliance to the surrounding ground.

In a hard clay, you might use a ratio (by weight) of 2.5 water : 1 cement : 0.3 sodium bentonite. This provides a compressive strength of about 100 psi and a modulus of about 10K psi. The strength and modulus of the grout are controlled mainly by the ratio of water to cement.

There seems to be some confusion over the purpose of the sprung legs. Some people theorize that the legs “couple” the magnet to the surrounding soil. While the legs may provide some “coupling” effect, their true purpose is to hold the magnet in place while the borehole is grouted. After that, we don’t care about the spring force of the legs or their resistance to corrosion.

The soil mass moves up or down and carries the magnet (and the grout and the pipe) along with it. We recommend using a soft grout, but unless the borehole has a large diameter, there is little chance that the grouted hole will become a pile, regardless of its strength.

We have strapped magnets directly to inclinometer casing with telescoping couplings, grouted the hole, and seen perfectly good settlement measurements – without the use of spider magnets at all.

We recommend that you incorporate telescoping sections within the pipe. This will prevent buckling or curvature from occurring in the first place, so this question will never come up.

If you must calculate a radius value, consider the size of the probe, 5/8 inch in diameter by 8 inches long, and the inner diameter of the pipe you will use, which varies with the wall thickness of the pipe.

The following equation (Steinhart-Hart equation) is used to convert ohms to °C for DGSI thermistors.

• Deg C = ((-23.50833439)*((Ohms/1000)^2))+((227.625007)*((Ohms/1000)))+(-341.217356417)

You will need Sondex pipe (corrugated plastic pipe used for drains), Sondex pipe couplings, Sondex sensing rings, Strong cable ties (16 inches or longer) or wire, mastic tape, and vinyl tape. The Sondex couplings are used to join lengths of Sondex pipe. The cable ties or wire are used to secure the Sondex pipe to the bottom of the casing and to hold the Sondex couplings onto the Sondex pipe. The mastic tape an vinyl tape are used to seal the bottom and each coupling so that grout cannot enter in the void between the Sondex pipe and the inclinometer casing. You should also consider installing a grout pipe (or hose) along with the casing and Sondex pipe, since it can be difficult to work a grout pipe between the Sondex pipe and the borehole wall.

1. Cut an 8 foot section of Sondex pipe. This will be attached to the bottom section of inclinometer casing. Cut the remaining Sondex pipe into 10 foot sections.
2. Attach sensing rings to the Sondex pipe at specified intervals. Protect the rings from corrosion with mastic and tape.
3. Prepare the bottom section of casing as usual, then secure the bottom 12 to 18 inches of the 8 foot section of Sondex pipe to the bottom of the casing. This can be difficult because (1) the Sondex pipe is quite strong and larger in diameter than the casing, and (2) the bottom of the Sondex pipe must be sealed against entry of grout. Some people seal the bottom of the Sondex pipe using a Sondex cap, mastic and tape. Then they rivet the Sondex pipe to one side of the casing, and waterproof the rivet holes. Other people do not use the Sondex cap. They slit the bottom of the Sondex pipe to flatten it against the pipe, secure it to the casing with cable ties or wire, and then carefully waterproof it.
4. Lower the first section into the borehole so you can connect the next section. If the borehole is full of water, you must fill the casing and Sondex pipe with water to counter buoyancy.
5. Slide a 10 foot length of Sondex pipe over a 10 foot length of casing. Join the casing, then joint the Sondex pipe. Fit the Sondex coupling onto the butted ends of Sondex pipe. Secure with cable ties and then waterproof the entire coupling.
6. Lower the pipe into the borehole so you can connect the next section. Join the casing, then join the Sondex pipe. Continue until the casing has reached the specified depth.
7. Protect the top of the casing and Sondex pipe from grout spills,
8. Backfill the borehole with grout. We recommend using our inclinometer grout mix.