BWSENSING Dual Axis Wireless NB-Iot Inclinometer (NB-WK100)

A retaining wall on a remote cutting, a pylon on an exposed ridge, a bridge pier far from any mains supply: these are the places where tilt matters most, and where running a signal cable is hardest. The BWSENSING Dual Axis Wireless NB-Iot Inclinometer (NB-WK100) removes the cable entirely. It measures inclination on two axes, charges itself from the sun and sends its readings over a cellular network to a monitoring cloud, so that an engineer at a desk can follow movement on a structure they may visit only a few times a year.

Robots Europa, based in Dublin, supplies the NB-WK100 to customers across the European Union and the DACH region. Robots Europa prepares each quotation, arranges delivery to the installation country and remains the point of contact for technical questions once the sensors are in service, so that a monitoring project is handled from a single European supplier from first enquiry onwards.

Background

Bewis Sensing Technology and the BWSENSING brand

The NB-WK100 is made by Bewis Sensing Technology LLC, a company established in 2010 that describes itself as an innovative and fast-growing business. Since 2019 its products have been sold under BWSENSING as the company's global brand. The range covers both wired and wireless tilt measurement, from compact digital-output inclinometers intended for machine and structural integration to cellular units such as the NB-WK100, which are designed to work on their own in the field. Buyers comparing the full line-up can browse the BWSensing range or the wider Sensors category.

Cellular tilt sensing without a gateway

Bewis Sensing Technology presents the NB-WK100, together with the NB-WL300, as a highly cost-effective wireless tilt sensor that supports two network modes: NB-IoT and GSM. NB-IoT is a narrowband cellular technology designed for devices that send small amounts of data at intervals and need to conserve energy, while 2G-GSM offers a long-established alternative bearer. Because the sensor talks directly to the mobile network, it needs no local gateway, no radio repeater and no data logger on site. The measurements travel to the Customizable Monitoring Cloud System, where they can be viewed and organised for the project in question. Solar charging completes the picture: the unit is intended to stay in place and keep reporting without a power cable or routine battery changes.

Technical Specifications

Specifications as published by the manufacturer; confirmed against the datasheet at quotation.

The manufacturer has not published the dimensions, weight, IP rating, battery capacity, power supply voltage, operating temperature, current consumption, measuring range or package contents; Robots Europa confirms these with the quotation.

What makes the NB-WK100 different from a wired inclinometer?

A conventional digital inclinometer is a component: it delivers an angle through an interface such as RS485, Modbus or CAN, and something else has to power it, read it, store the data and send it on. That is the right arrangement on a machine or in a building where cabling and a controller already exist. On a slope, a mast or a scattered set of structures, however, the cabling, the logger and the communications link often cost more effort than the sensor itself.

The NB-WK100 folds those layers into one device. Measurement, power and communications sit in the same unit: the solar charging supplies energy, the cellular modem provides the link, and the cloud system receives the data. The maximum transmission distance is no limit, because readings travel over the mobile network rather than a point-to-point radio link; in practice, the deciding factor is cellular coverage at the installation site.

The two headline figures should be read together. A resolution of 0.0007° describes the smallest change in angle the sensor can register, which is what matters when the goal is to spot slow, progressive movement over weeks or months. An accuracy of 0.5° describes how closely the absolute reading matches the true inclination. For trend monitoring, where the change from a baseline is the key quantity, the fine resolution is the more telling of the two; where an absolute angle has to be certified, the accuracy figure is the one to plan around.

Why does the NB-WK100 support both NB-IoT and 2G-GSM?

Cellular coverage is uneven, and the two technologies complement each other. NB-IoT is built for low-power devices and is designed to reach locations where ordinary mobile reception is weak, such as below ground level or inside dense structures. 2G-GSM has wide historic coverage and can serve as a fallback where NB-IoT has not been rolled out. Supporting both network modes gives an installer more than one route to a working connection.

For European projects there is a practical point to check: some operators in Europe are retiring their 2G networks, and NB-IoT availability differs by country and by operator. Robots Europa recommends checking coverage and SIM arrangements for each site before an order is finalised, and can discuss this as part of the quotation.

Who is the NB-WK100 for?

The sensor suits organisations that need to watch the inclination of assets spread over a wide area, or located where power and cabling are impractical. Geotechnical consultants monitoring cuttings, embankments and landslip-prone slopes form one natural group. Infrastructure owners responsible for bridges, retaining walls, tunnels and transmission or telecommunications towers form another. Contractors carrying out excavations next to existing buildings may use it to document whether neighbouring structures are moving during the works. Facility managers of heritage buildings and industrial plant can apply it to long-term observation where a permanent wired installation would be intrusive.

Where the application is the opposite, a fixed installation with a controller, a PLC or an existing bus, a wired BWSENSING unit is usually the better match. The BWSENSING Cost-Effective Dual-Axis Digital Output With Modbus Inclinometer (BWN427) and the BWSENSING Cost-Effective Dual-Axis Inclinometer (BWM427) are dual-axis alternatives for integration into existing systems, while the BWSENSING Cost-Effective Single-Axis CAN Output Inclinometer (BWM415) serves machines that communicate over CAN. The manufacturer's wireless NB series also includes the NB-WL300, NB-WM410 and NB-WS2000, each of which is a separate model with its own specification.

What is the NB-WK100 used for?

1. Slope and landslip monitoring: tracking gradual movement on cuttings, embankments and natural slopes far from mains power.
2. Retaining wall observation: recording whether walls begin to lean after heavy rainfall, backfilling or nearby construction.
3. Tower and pole inclination: watching telecommunications masts, transmission pylons and lighting columns for tilt over time.
4. Bridge and pier surveillance: following the inclination of piers and abutments as part of a structural health programme.
5. Excavation-adjacent buildings: documenting the behaviour of neighbouring structures while foundations or basements are dug.
6. Heritage and ageing structures: long-term, low-intrusion monitoring of historic walls, towers and older industrial buildings.

Pricing and Availability

Robots Europa supplies the NB-WK100 on quotation, so that the configuration, quantity and network arrangements can be matched to the project rather than to a standard listing. Tell us how many measuring points you plan, where they will be installed and which countries are involved, and we will respond with a tailored offer. Delivery, customs and after-sales support are arranged together with the quotation. To begin, use the quotation request available on this page.

Frequently Asked Questions

Does the NB-WK100 need a gateway or data logger?

No separate gateway is required, as the sensor connects directly to the cellular network using NB-IoT or 2G-GSM. Its readings are sent to the Customizable Monitoring Cloud System.

How is the NB-WK100 powered?

The unit uses solar charging. This allows it to keep reporting from sites without a mains supply.

What accuracy and resolution does it offer?

The NB-WK100 has an accuracy of 0.5° and a resolution of 0.0007°. The fine resolution makes it well suited to detecting slow changes in inclination.

Is there a limit on how far the sensor can be from the office?

The maximum transmission distance is no limit, since data travels over the mobile network. Cellular coverage at the installation site is therefore the factor to verify.

Will it work on European mobile networks?

It supports NB-IoT and 2G-GSM, both used in Europe, but availability varies by country and operator. Robots Europa advises checking coverage for each site before ordering.

How are the readings viewed?

Measurements are uploaded to the Customizable Monitoring Cloud System. Engineers can follow the inclination of every installed sensor from the office instead of visiting each site.

Where can I buy the NB-WK100 and what does it cost?

Robots Europa supplies the NB-WK100 across the EU and the DACH region. Pricing is provided on request through a project-specific quotation.

Summary

The places where structures are most likely to shift are often the places where measurement is hardest to install. The BWSENSING NB-WK100 answers that problem by combining dual-axis tilt sensing, solar charging and direct cellular communication in one unit, with fine resolution for picking up gradual movement and a cloud system that brings the readings to the engineer instead of the other way round. Backed by Bewis Sensing Technology and supplied in Europe by Robots Europa, it is a practical option for remote slopes, towers, bridges and buildings alike. For a quotation tailored to your sites, this page is the starting point.