Manhole sensor for covers, doors and gates
Manhole covers at utility facilities are usually completely unsecured. The manhole sensor sits inside the manhole, monitors openings and closures, and reports every opening via NB-IoT.
- Long-life battery
- Alert via NB-IoT
- Expandable with GPS module
Why the manhole sensor
Every opening is reported the instant it happens
Scattered manholes cannot be guarded. The sensor takes care of it, needs neither a power connection nor site infrastructure, and only reports when something happens.
Proactive alerting
When the manhole is opened, the notification goes out, whether it is unauthorised access or part of your normal operations.
Mounted inside
The sensor sits inside the manhole and monitors openings and closures from there. Nothing changes on the cover itself.
Power via long-life battery
An energy-efficient battery powers the sensor. No connection is needed on site, so it can also be used at standalone manholes.
Transmission via NB-IoT
The notification runs over Narrowband, meaning the mobile network, with no dedicated network connection at the manhole.
Combinable with other sensors
The sensor is integrated into the gateway. Further sensors can run via the same gateway, such as the crack sensor or the water level sensor.
Expandable with a GPS module
A GPS module can be added on request. This is useful where many similar measuring points are spread across an area.
Technical data
Specifications at a glance
Runtime, ingress protection and range depend on the measuring point. We specify them on a project basis once the installation site is set.
- Measured quantity
- Opening and closing of manhole covers, doors and gates
- Mounting location
- inside the manhole
- Power supply
- long-life battery, no connection required on site
- Data transmission
- NB-IoT (Narrowband)
- Alerting
- proactive on opening
- Gateway
- sensor is integrated into the gateway, further sensors can be combined via it
- Combinable with
- water level monitoring and crack monitoring from Infrasolute
- Option
- expandable with a GPS module
Operating principle
From opening to notification
The sensor is mounted in the manhole and monitors the state of the cover from there. If it leaves the closed position, the notification goes out immediately, without anyone needing to be on site.
- 01
Mounting
The sensor is fitted inside the manhole, without affecting the cover and without any cabling to the outside.
- 02
Monitoring
The closed state is the normal case. The sensor reliably detects openings and closures.
- 03
Alerting
The notification goes via NB-IoT to the platform and from there to the stored recipients.
The difference
Manhole without and with monitoring
Manhole without monitoring
- The cover is freely accessible
- An opening only becomes apparent at the next inspection
- Unauthorised access and a normal operation look the same
- The time of opening remains unknown
Manhole with manhole sensor
- Every opening is recorded
- The notification goes out the instant it happens
- Every event carries a timestamp
- Further measured quantities run via the same gateway
Applications
Where the manhole sensor sits
Everything from a single source
From the monitoring concept to operation
The manhole sensor is one building block of well-designed monitoring. On request, Infrasolute takes care of concept, installation, operation and ongoing monitoring as a complete solution, a single point of contact for the whole monitoring.
- 01
Concept
We clarify which manholes and access points need monitoring and who is notified in the event of an alarm.
Learn more - 02
Installation
On request, we fit sensor and gateway and commission the transmission.
Learn more - 03
Maintenance and operation
We keep the sensors operational and monitor the battery charge level.
Learn more - 04
Monitoring and alerting
Every opening runs through the defined alarm chain, around the clock.
Learn more
Matching solutions
The sensor as part of a solution
The sensor reports the opening. How this becomes monitoring is explained on the solution page.
Manhole and access monitoring
The detailed page on the application: which access points are monitored, what triggers the notification in operation and how the alarm chain runs.
View solution
Water level monitoring
The water level in the same manhole can be measured alongside. Both values run via the same gateway into the same platform.
View solutionWhich access points do you want to monitor?
Tell us about the manholes, doors or gates concerned. We will suggest the measuring points and the right combination of sensor and gateway.
Christian Steffes 
Data platform
All readings on one platform
The sensors transmit their readings wirelessly to the data platform, where they are evaluated, documented and continuously checked against your thresholds.
- AI-assisted data analysis
- User-focused reporting
- Continuous evaluation
- Warning and alarm thresholds
- Alerts by email and text message
- Remote access around the clock
- AI-assisted data analysis Condition within limits
- User-focused reporting Report ready
- Alerting Thresholds monitored
Frequently asked questions about the manhole sensor
Where is the manhole sensor mounted?
Does the sensor need a power connection?
How do the notifications get out of the manhole?
Can the sensor be combined with other measured quantities?
Is there a way to locate the measuring point?
Does the sensor distinguish authorised from unauthorised opening?
Project inquiry
Request the manhole sensor
Tell us which manholes or access points should be monitored. We will suggest the measuring points, the transmission method and the right alarm chain.
+49 6742 8599600 DE +41 41 670 00 11 CH info@infrasolute.com