Water Level Station for Water Level (+/- 0.1% of full scale) and Temperature - IC-SNiP-SPT-SL

The SNiP-SPT is a 'Sensor Node Integrated Package' for LoRa, LoRaWAN, FSK or CAT-M1 communication of real-time water levels and temperature measurements for continuous environmental water level monitoring.

The base SNiP-SPT integrates 1x S-NODE and 1x Stevens SmartPT Sensor to a site's unique network, communication and power requirements. The S-NODE can support an added 3x Sensors. The Stevens SmartPT Sensor has been designed to measure water level and temperature.

S-NODE: SDI-12 Node

The S-NODE has been designed to support the broad suite of SDI-12 based environmental sensors. The S-NODE can support sensors with higher power requirements; a solar panel can charge either the internal lithium-ion battery or both the node and sensor can be powered by an external 12V system (e.g. battery or mains source). The S-Node's SDI-12 communications can be customised to allow for interfacing with any SDI-12 sensor.

A decoder suitable for TTN will be provided based upon sensor configuration

Features:

- LoRaWAN low-power long-range connectivity
- Supports the full range of SDI-12 commands, and sensors requiring constant excitation.
- Optional CAT-M1
- Solar rechargeable Lithium-ion or external 12V power options
- Optional Multi-constellation GNSS
- AS923, AU915 and US915 available, with other region plans available upon request.
- Standard IP65 enclosure, optional IP67

Smart PT Sensors:

Stevens Smart PT is a ceramic membrane pressure and temperature sensor that delivers accurate results for a wide range of fluid level measurement applications. In addition to simple instantaneous measurements, this smart sensor features the ability to capture peak crest levels, and to automatically sample and report basic statistics on a configurable time interval.

Features:

- Less than +/- 0.1% full scale accuracy
- Aluminium oxide ceramic membrane
- Digital output (SDI-12 / RS485)
- Depth scales available from 2 meters (6.6 feet) up to 200 meters (660 feet)
- Rugged housing and fully potted electronics, no risk of leaking
- Compact size
- Not damaged by freezing water
- Vented or non-vented cable, user specified length
- Direct pipe connection option
- Low power consumption
- Lightning protection
- Overpressure tolerant

Specifications

- Supply voltage: 6 to 28 VDC (12 VDC typical)
- Current consumption: Average, SDI-12, one measurement per minute: 0.9 mA; Average, RS-485, one measurement per minute: 1.5 mA
- Peak current, during response to host: 30 mA
- Output: SDI-12 (Version 1.4) and RS-485
- Selectable output: Pressure in bar, kPa, psi or water depth in m, cm, ft.
- Temperature: in C or F
- Operating temperature: -20 C to 80 C (-4 F to 176 F)
- Storage temperature: -40 C to 80 C (-40 F to 176 F)
- Pressure accuracy: +/- 0.1% of full scale
- Temperature accuracy: +/- 0.25 C (0.45 F)
- Wiring: Red: 6 to 28 Vdc, Black: GROUND, Blue: SDI-12, White: RS-485 A/+, Green: RS-485 B/-
- Cable: High durability polyurethane (26 AWG)
- Pipe threading: M14-1
- Dimensions: 86.4 mm x 22.1 mm (3.4 in x 0.9 in)
- Body material: 316L Stainless Steel
- Weight (Probe): 120 g (4.23 oz.)
- Weight (Cable): 40 g per m (0.43 oz. per ft)