Water quality measurements are performed for water in streams, rivers, lakes and in groundwater systems. There are different parameters that can be measured and used as indicators of water quality, for example electro conductivity (EC), acidity or alkalinity of a solution (pH) or dissolved oxygen (DO). Water depth, flow and temperature can add valuable insight into water quality. For that purpose 6542 hydrostatics depth probe or 6526 Starflow instrument can be added to a water quality measurement station.
Unidata supplies a wide range of water quality systems. In the example shown in the illustration, water conductivity, temperature, pH, dissolved oxygen and water depth are measured and data stored and wirelessly transmitted by a Neon Remote Logger.
The water conductivity probe 6536P-2 is connected to the 6536E Water Electro Conductivity instrument via an SDI-12 bus. The 6536E Conductivity instrument runs local scheme to collect conductivity reading every 5 minutes. Neon Remote Logger is set up to collect / log readings from conductivity instrument, pH probe, dissolved oxygen probe and hydrostatic depth probe every hour and to transmit this data to central Neon server every 4 hours.
Ultra-low-power consumption of this system set up is ideal for remote, unattended operation. These instruments and logger will operate for up to 2 years using a small lithium battery package. Installing the Neon Remote Logger enables you to monitor and modify / change data acquisition and check the health of the site, all from a remote location using a web browser anywhere in the world.
The choice of telemetry option would be based on cellular coverage in the measurement area and costs associated with reporting the data back. Satellite services for these applications have reduced in price over the last 5 years, so satellite services are a reasonable option for such measurement stations.
The systems can be powered using lithium battery packs, or a small solar panel and battery. Like all Unidata systems you can connect many other sensors to the standard system. If water quality measurements are done in relatively shallow waters, 6542 hydrostatic water depth probe can be replaced by 6526 Starflow instrument. Starflow will measure depth of water as well as velocity and rate of flow.
|Options for Application Specific Instruments / Inputs||Unidata Part Number||Description|
|Four Electrode Conductivity Instrument||6536E||4EL Water Conductivity Instrument|
|Four Electrode Water Conductivity Probe||6536P-2-10/20/30/50||4EL Water Conductivity Probe with 10m, 20m, 30m or 50m of cable|
|Hydrostatic Water Depth Probe||6542D-A / B / C||PT12 Pressure / Temperature Sensor SDI-12 3.5m, 10m or 20m|
|Hydrostatic Water Depth Probe - Titanium||6542D-T-A / B / C||PT12 Pressure / Temperature Sensor SDI-12 3.5m, 10m or 20m|
|Double Junction Teflon-pH Probe||6528C||pH Probe|
|Dissolved Oxygen Probe||7422A||O2 Probe|
|Options for Neon Telemetry - NRL / NRT / RTU / Field Units||Unidata Part Number||Description|
|Neon Remote Logger 16 Channels||3016A||Options Available: 3G/4G Cellular, Ethernet, Globalstar, Inmarsat, Iridium SBD and LoRa|
|Neon Remote Logger 8 Channels||3008A||Options Available: 3G/4G Cellular, Ethernet, Globalstar, Inmarsat, Iridium SBD and LoRa|
|Neon Remote Logger 4 Channels||3004A||Options Available: 3G/4G Cellular|
|Neon Remote Logger 4 Channels M Series||3004A-M||Options Available: 3G/4G Cellular, Ethernet, Microsatellite, Iridium SBD and LoRa|
|Cellular RTU 3G/4G||2013F-AB03 / 2013F-AB04||Neon Metering Module 3G/4G with Antenna and Li Battery|
|Cellular RTU 3G/4G - Industrial||2016F-AB03 / 2016F-AB04||Neon Remote Terminal 3G/4G with Antenna and Li Battery|
|Low Earth Orbit Satellite Globalstar||2015F-AB0||NRT Satellite Globalstar Modem with Antenna and three Li Batteries|
|Ethernet||2017F-0B0-1 or 3||NRT Ethernet with single or triple Ethernet Ports with three Li Batteries|
|Equatorial Orbit Satellite - Inmarsat||2018F-AB0-1 or 3||NRT Ethernet with single or triple Ethernet Ports with three Li Batteries|
|LCD Display||2500E||NRT LCD Display|
|NRT Field Termination Strip||2103F||2015F,2016F,2017F, and 2018F NRT FTS|
|NRT Firmware Option||2303A-8M||8M Extended Memory Option|
|NRT Firmware Option||2303A-8M-CAM||8M Extended Memory & Serial Camera Option|
|NRT Firmware Option||2303A-CAM||Serial Camera Option|
|Options for Neon Application Software - Customer Server||Unidata Part Number||Description|
|Neon Application Software||2302A||Neon Server Software Licence Incl 5 NAL |
|Neon Application Software||2302A-10||Additional 10 NRT Access Licences|
|Neon Application Software||2302A-20||Additional 20 NRT Access Licences|
|Neon Application Software||2302A-50||Additional 50 NRT Access Licences|
|Options for Neon Application Software - Unidata Server||Unidata Part Number||Description|
|Neon Application Software||2301A||Neon Data Initial Subscription Setup Fee|
|Neon Hosting Service||2301A-01||Neon Data Service Fee for 1-50 NRTs|
|Neon Hosting Service||2301A-02||Neon Data Service Fee for 51-100 NRTs|
|Neon Hosting Service||2301A-10||Neon Data Service Fee Metering|
|Options for Conventional Dataloggers / Field Units||Unidata Part Number||Description|
|Neon Remote Logger 16 Analog Channels / Touch Screen Display||3016A-000||16 Ch NRL (Superseded Prologger 7001D)|
|Neon Remote Logger 8 Analog Channels / Touch Screen Display||3008A-000||8 Ch NRL (Superseded Stalogger 6004D)|
|Neon Remote Logger 4 Analog Channels / Touch Screen Display||3004A-000||4 Ch NRL (Superseded Micrologger 8010C)|
|Starlog V4 Management Software||6308A-AUE||Starlog V4 Full Licence Key|