Dew-point analysis
When and where does a surface drop below the dew point? Detect condensation on glass, walls or objects before damage occurs.
Own development
memo: measurement systems for maintenance-free long-term operation
Two devices for the same task in different environments: measuring over months and years without mains power, without a local network and without anyone having to visit regularly. memo-2.0 transmits via cellular network to the customer portal, memo-BT sends its measurement history via Bluetooth to a smartphone.
in the field since 2021
memo-2.0: modular data acquisition with cellular connectivity
One base module, up to 24 exchangeable sensor modules, an integrated SIM card. The system records locally, transmits to the customer portal at configurable intervals and runs for years on one set of batteries. Configuration and firmware updates are done remotely. You assemble your sensor network from the modules your question requires and extend it during operation if needed.
Place the base module
Magnetic, screwed or glued. No power supply, no Wi-Fi.
Plug in sensor modules
Mounted at the measuring point by cable. Each module is recognised and receives a fixed identifier.
Choose intervals
Measure at minute to hour intervals, transmit at minute to weekly intervals. Changes are made remotely.
Analyse the data
Dashboards in the customer portal, export of raw data, annual reports on request.
Key facts
| Assembly | Details |
|---|---|
| Base module | Palm-sized, approx. 180 g with batteries. Display and button for switching on and off, checking data and enrolling new sensor modules. Batteries replaceable by the user. |
| Sensor modules | Compact, one to three sensors per module, up to 24 per base module. Quantities: temperature, humidity, non-contact surface temperature, contact temperature, light and UV, air pressure and air quality. Further quantities on request. |
| Communication | LTE-M and NB-IoT with GPRS fallback, integrated SIM card, usable internationally. Remote configuration and remote firmware updates. |
| Runtime and environment | Several years on one set of batteries, depending on the intervals. Operation from -20 °C to +70 °C indoors and in sheltered outdoor areas. |
Applications
Stress cracks in glass
Record temperature differences across a glass surface and relate them to light and climate data to narrow down the causes of cracking.
Light measurement
Record illuminance and UV share over days and seasons to assess light exposure of sensitive surfaces.
Climate distribution
Temperature and humidity distribution in large rooms or across several rooms, with one base module and many measuring points.
In practice
Two examples
Protective glazing at a cathedral. One sensor module in the gap between protective and original glass and one on the original glass itself, distributed over several windows. Since 2021 the data show how much the protective glazing warms the original glass and that condensation stays on the protective pane. Annual reports summarise the dew-point events.
Stress cracks in a historic church abroad. Contact and room-climate modules together with light sensors on large glass surfaces. Because the local cellular network only offered GPRS reliably, the device received an adapted firmware; the switch was made remotely.
Customer portal
Your data, your view
Each customer receives their own access to the customer portal. Dashboards show trends, comparisons between measuring points and derived quantities such as the dew-point margin. Raw data can be exported. Initial setup of the views is included in the delivery, later adjustments and annual reports are offered as a service.
Frequently asked questions
Does memo-2.0 work outside Germany?
Yes. Before deployment abroad I check the network coverage at your site with you and, if necessary, set the device to the most reliable network available there.
Do I need help with setup?
The system arrives preconfigured. You switch it on, mount the modules and see the first data in the portal. Portal setup is included.
Can I change the system later?
Yes. Sensor modules can be added or exchanged during operation, intervals are changed remotely. Each module keeps its identifier so measurement series remain traceable.
What does memo-2.0 cost?
The price depends on the number and type of sensor modules. Cellular service and portal are included in the first year, after that an annual fee covers data transmission and portal operation. I will prepare a quote for your configuration.
in development, field tests ongoing
memo-BT: residual moisture and temperature inside the building element
A compact wireless sensor placed into screed or in-situ concrete during installation, where it remains. It measures moisture and temperature inside the material and transmits its measurement history via Bluetooth Low Energy. Any smartphone within range can collect the data with the app, without pairing and without a network on the construction site.
The goal: document the entire drying process non-destructively, narrow down the point of readiness for flooring and avoid repeated measurements that require taking material samples. The sensor can be used from 35 mm material thickness and runs on one battery for the entire drying phase.
Handling
Switch on
Remove the transport lock, the sensor activates.
Ready
A blinking LED indicates readiness.
Place
Press into the screed and smooth the surface. For in-situ concrete there is a housing for pre-mounting on the reinforcement.
Collect data
The app shows trend and history, at any time during drying.
Readiness for flooring
Follow temperature and moisture trends and plan the time for laying the floor covering.
What memo-BT does differently
- Installation without specialist staff, the sensor remains in the building element
- No preparation or follow-up work, no drilling, no sampling
- Continuous recording of moisture and temperature inside the material
- Measurement history in the radio signal: data complete even if nobody was on site for days
- No pairing, any smartphone with the app collects data
- Battery operation for the entire drying phase
- Compact housing, usable from 35 mm material thickness
- Sensors with balanced hysteresis behaviour for reliable trends
- Proof of quality towards the client and subsequent trades
- Detection of faults in the construction process, such as early formwork removal or incorrect heating
Further variant
Level measurement with a pressure probe
The same platform with two pressure sensors: one on a cable probe in the water, one in the dry housing for air pressure. The difference yields the fill level, independent of the weather. Intended for cisterns, tanks and shafts without mains power. This variant is under trial.
Pilot project wanted
memo-BT is a development product. If you produce, lay or test screed or concrete elements and would like to accompany a sensor through a real drying phase, let us talk about a pilot project.