WLD sensing cable
WLD sensing cable detects liquid along the entire length of the sensing cable. Even a few drops of water, ethylene glycol, or other conductive liquid trigger the alarm. WLD sensing cable is re-usable (cable can be cleaned, dried & used again).
WLD sensing cable features
- No Bend limit: WLD sensing cable is not limited by any bending radius.
- No Twist limit: WLD sensing cable can be twisted as any other electrical cable.
- No Grip limit: Water detection functionality is not limited by point pressure within a reasonable range.
WLD cable components
WLD sensing cable is supplied in length from 2m to 50m and can be extended by a non-sensing WLD prolong cable.
- Connection cable - 2m (Green terminal block, 2m, Terminator)
- WLD Sensing cable A - 2m / 10m / 50m
- WLD prolong cable A - 5m
Why is Water Leak Detection system better than Flood detector
Water Leak Detection with the sensing cable is more expensive than simple spot water detection. However, WLD provides a much faster reaction to any water in the room. Thanks to the early alert significant damages to IT or other infrastructure can be avoided. Water Leak Detection with sensing cable is recommended in IT, data centers, technology, the medical sector, or anywhere else, where any water damage would be highly expensive.
Proper Water Leak Detection with a sensing cable helps you avoid costly damages thanks to an early alert that is triggered by the first few drops of liquid. Learn more about the difference between the WLD system with sensing cable and water spot detection in the application note.
>> Water Detection: Sensing cable versus Flood sensor
Compare Water Leak Detection devices
HWg Video Flyer about NB-WLD monitoring device
Usage scheme
NB-IoT network connectivity
- NB-IoT (NarrowBand IoT) cellular network is operated by standard mobile operators, but it's a different technology than GSM, LTE, or Cat-M1.
- Benefit of the NB-IoT technology is the low power consumption of the device, so devices can be operated for months & years from the battery.
Prepaid NB-IoT SIM card included
The most popular "subscribed" package contains 3 years prepaid NB IoT SIM card preconfigured by HW group company. Connectivity is provided by Vodafone global, the device can be used in most countries. The default preconfigured portal is HWg-cloud.com for remote device management & configuration. Devices can be migrated to any other SensDesk Technology portal.
3rd party SIM card for NB-IoT
You can use your own sim card for NB-IoT network connectivity. But! Don´t forget that:
- it's different technology & frequencies than LTE. You really have to use NB-IoT Simcard
- Devices have to be specifically configured for your own sim card, contact us before you purchase it
- Data can be delivered to your own hosted installation of the SensDesk portal. It's recommended for projects with 200+ devices. Contact us for details.
Portal is required 
All IoT Monitoring Devices have to be connected to any SensDesk Technology-based portal (SaaS) in order to work properly.
The SensDesk Technology is a portal solution from the HW group to manage remote sensors and devices (only for HW group products). Portals offer a central overview of all the values and provide a variable combination of features like sending the alarms, reporting, history records, outputs into the Open API, etc.
There are several portals available. The manufacturer provides HWg-cloud.com and SensDesk.com, 3rd party companies provide more than 10 other portals. Users can migrate the device between any available SensDesk Technology portals.
HWg-cloud.com: Limited & Free portal
- the default pre-configured portal option
- provided by the device manufacturer
- sends email alerts and offers basic remote device management
- advanced features of SensDesk Technology are not available
- You can migrate your devices from HWg-cloud.com to any other SensDesk Technology portal at any time
SensDesk.com: Paid portal service with advanced features
- Several subscription plan options
- SMS / Voice call alerts to any mobile phone
- Graphs / MultiGraphs (data history)
- PDF reports
- Email alerts/alarm escalation
- History log
- Open API: All sensor values are available via XML / SNMP protocols
Local portals by Portal providers
- portals based on SensDesk Technology ran by 3rd party providers
- local languages and support
- various mix of free/paid services
- various commercial names
Why do you need a portal?
- Using the portal makes the IoT monitoring devices easy to install even by junior local staff. To install the IoT devices you don´t need any experts on the site.
- The portal can then send alerts, provides remote device management. Portal is one place with all your sensors & graphs overview, reporting, Open API, ...
- Even the defaul free of charge version of the portal (Hwg-cloud.com) can alert you by email when device disconnected / sensor value alarm.
- Price of the SensDesk.com portal service is around 15 % of the hardware cost per year.
All your sensors are in your pocket 24/7
You can have a display with all your sensor values in your pocket with you 24/7. Check HWg Monitor mobile app. The app can be running on your phone, on the Android TV, or on the Tablet installed on the wall.
Alerting
SensDesk.com can immediately alert you by SMS or Voice call to your mobile phone in the case of an Alarm situation. If the time is critical, every second counts. The immediate reaction to an alarming situation can be also responded to by closing/opening a remote relay output, which can for example turn on a siren. Quick alerts lower the risk of costly damages in case of an Alarm. Alerts from the portal can escalate to higher intensity or to another person if the problem persists.
Sensor values in Multigraphs
Multigraphs can display multiple sensor values from different kinds of sensors in one graph. That offers a situation overview of a remote site, significant fluctuance of sensor values is visible at first sight. It is popular for comparing time events. SensDesk.com system is also showing sensor value graphs that alert you when the device is not working or any sensor is out of defined limits.
For an example of working with charts in SensDesk, see the application note.
PDF reports
You can easily create comprehensible reports with graphical representations of sensor values in one or in a number of locations. You can create reports in PDF (CSV) periodically. Reports can be printed & clicked to the invoice for your customer. Reports for pharmaceutical / other production (HACCP) are possible.
History
Thanks to the history log you can easily compare your historical data.
Open API 
You can connect the data from SensDesk.com to any other system. Portal user account (all connected sensors) is accessible by Open API (SNMP, XML).
- A list of all the sensors / current values can be downloaded in XML format (HTTP get).
- All the values can be read via SNMP v1 / v3 protocol.
The number of Dashboards, Multigraphs and Reports is limited by the subscription plan as well as the length of the history log, check the plans: www.sensdesk.com
HWg Video about Water Leak Detection system and it's components
Knowledge Base articles about Water Leak Detection System
Fast & reliable detection of the first drops of water in remote locations is critical for many businesses. Early water leak detection isn't just important for data centers and medical labs, it also saves significant money in industrial facilities, physical archive storage, hotels, museums and more. To bring you reliable & early water leak detection, in HW group we created the sensing cable type A - the heart of the water leak detection system.
Read the Knowledge Base article about the heart of the WLD system - the sensing cable.
The business of reliable water detection in buildings is about really fast water detection and fast alarming (and alert escalation). To detect water in a building (nearby protected technology) within the first 5-15 minutes costs the end customer tens of hundreds of Euros. If a customer has invested time & money in analyzing where to install the sensing cable for water detection, the communication/alarm escalation must also be properly implemented.
Read the Knowledge Base article about components of the WLD system by HW group.
There are two principles for detecting water in remote locations - Spot Detection or Water Leak Detection based on Sensing cable. They cost different amounts of money (hardware & installation), but also give different results. Let's take a closer look.
Read the Knowledge Base article about the difference between Water Spot Detection and WLD Zone Detection.
WLD Relay - a universal WLD (Water Leak Detection) sensor, with one WLD sensing cable input and 2 kinds of outputs, is one of our top-selling products. Here's why.
Read the Knowledge Base Article about the top selling WLD components: Sensor WLD Relay 1W-UNI.
