Decentlab Pressure / Liquid Level, Temperature and Electrical Conductivity Sensor - DL-PR36CTD
The device DL-PR36CTD enables remote monitoring of water level, temperature, and electrical conductivity with high precision. Applications are water quality monitoring in open water, fill level of tanks, groundwater quality and level, and various other applications. It measures the pressure at the sensor head relative to the pressure at the cable end (device enclosure). When the sensor head is placed underwater (or any other liquid), the relative pressure indicates the depth of the sensor head. In water, the relative pressure of 1 bar equals a depth of approximately 10 m. Also available on the request is a variant of the DL-PR36CTD which measures the absolute pressure at the sensor head, i.e., the pressure relative to zero bar (vacuum).
The electrical conductivity measurement is used for monitoring the ion concentration in water (salinity, concentration of pollutants). Thanks to the four-wire technology, the conductivity probe is not affected by polarization effects or dirt.
The device also reports the temperature of the sensor head with high precision. The temperature reading is also used internally for temperature compensation.
- LoRaWAN™-enabled high-precision piezoresistive pressure/depth gauge including temperature and conductivity sensor.
- Pressure range: 0 to 1 bar (0 to 10 m); up to 30 bar (300 m) on request.
- Electrical conductivity range: 0 to 20 mS/cm (other ranges on request).
- Cable length: 10 m (other lengths on request).
- RS-485 interface for robust operation in harsh environments even with cable lengths of several hundred meters.
- Place and measure: no setup required.
- Configurable via a command-line interface and downlink command interface.
- Unattended real-time monitoring for several years without replacing batteries.
- Robust polycarbonate enclosure: weatherproof, impact-, UV-resistant (IP67).
- Standard alkaline batteries: available everywhere.
- CE compliant, Radio Equipment Directive (RED) 2014/53/EU.
SENSORS
PRESSURE
Piezoresistive transducer
Range: 0 … 1 bar, relative (other ranges on request)
Linearity / precision: max. ±0.02% of full scale
Total error band: max. ±0.1% of full scale
TEMPERATURE
Range: -40 ... +125 °C
Accuracy: max. ±0.1 °C
ELECTRICAL CONDUCTIVITY
Range: 0 … 20 mS/cm (other ranges on request)
Accuracy: max. ±2.5% of full-scale
APPLICATIONS
- Level/depth and water quality in tanks for liquids
- Boreholes
- Groundwater and wells
- Running or open water level and quality
- Salinity and chloride monitoring
| User manual url (wysiwig preferred) | https://www.decentlab.com/support |
| Datasheet URL | https://www.decentlab.com/products/liquid-level-pressure-and-temperature-lorawan-kj45e |
| Partner Name | Decentlab Gmbh |
|---|---|
| Vendor | Decentlab GmbH |
| User manual url (wysiwig preferred) | https://www.decentlab.com/support |
| Datasheet URL |
https://www.decentlab.com/products/liquid-level-pressure-and-temperature-lorawan-kj45e |
| Certification | CE, LoRaWAN Certified |
| Other technical documents (wysiwig preferred) | https://www.decentlab.com/support |
| Power supply | Non rechargeable battery |
| Battery specification (Wh) | 2 x alkaline C batteries (LR14), 20000 mWh |
| RF power (dBm) | 14 |
| Battery type | Alkaline |
| Antenna | Integrated |
| Operating Temperature (min to max) | -30°C to 60°C |
| Band LoRaWAN MHZ | EU868 - Europe 863-870MHz |
| LoRa Class | Class A |
| Depth (cm) | 7 cm |
| Height (cm) | 8 cm |
| Width (cm) | 13.5 cm |
| Commercial status | Commercially available |
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