Instruction Manual for OTT models including: OTT PLS-C Long Term Reliable, OTT PLS-C, Long Term Reliable, Term Reliable, Reliable
OTT PLS-C - ENVCO Global
File Info : application/pdf, 2 Pages, 84.00KB
DocumentDocumentOTT PLS-C Long-term reliable readings In addtion to water level and temperature, the OTT PLS-C unit measures conductivity thus providing basic water quality indicators. It is best suited for long-term use with solar or mains powered measuring stations and may be used for both surface water and groundwater measurements. Its top-quality features ensure long-term precise readings at attractive cost efficiency. The particulary robust and precise ceramic capacitive pressure cell features long-term stability, nearly no drifting, and overload protection of at least four times the measuring range. For conductivity measurement, a four graphite electrode measuring cell is incorporated. Thanks to its waterproof moulded electronics, saltwater resistant stainless steel enclosure (904L), and Kevlar reinforced probe cable, the PLS-C unit even withstands harsh operating conditions. The probe may be easily incorporated into an existing infrastructure using the SDI-12 interface. When large distance communication is required, the RS-485 interface provides cable lengths of up to 1,000 m when used together with an OTT datalogger. Quantitative Hydrology Quality that pays off OTT PLS-C Features and benefits -- Relative pressure probe including pressure compensation capillary, temperature sensor, and conductivity cell -- Precise ceramic pressure cell featuring long-term stability withstands mechanical impacts and aggressive media -- Exact water level data due to compensation of influencing factors (temperature, changes in atmospheric pressure, local gravitational acceleration, and specific water gravity) -- Four graphite electrode conductivity cell remains unaffected by polarization effects and immune to contamination -- Fad 5 connection box keeps moisture out of the connector area using a color coded desiccant -- Flexibility in use may be connected to each datalogger fitted with SDI-12 interface -- Cable lengths of up to 3,280 ft thanks to RS-485 interface (together with OTT datalogger, e.g. OTT netDL) Simplified communication during setup and calibration -- Simple Windows based software providing user guidance for calibration of conductivity sensor -- USB interface of the OTT netDL datalogger may be used to quickly and conveniently connect a notebook computer -- Alternatively: SDI-12/USB adapter for flexible connectivity (accessory) -- Pre-wired SDI-12 plug-in contact for convenient handling (accessory) Applications -- Water quality monitoring -- Saltwater intrusion monitoring -- Groundwater monitoring during drilling operations involving fracking -- Studies on discharge water from farms -- Wastewater monitoring in mining -- Measurements in estuaries, swampland or moorland -- Tracer studies Specifications Output parameters Water level/pressure, temperature, specific conductivity, salinity, TDS Water level measurement (pressure) - Pressure sensor: ceramic, temperature- compensated - Measuring range: 13, 33, 66, 131, 328 ft (4, 10, 20, 40, 100 m) water column - Resolution: 0.01 % FS - Accuracy (linearity + hysteresis): ±0.05 % FS - Long-term stability (linearity + hysteresis): ±0.1 %/a FS - Zerodrift: ±0.1 % FS - Pressure sensor capability to withstand overloads: (without permanent mechanical damage) 4x measuring range - Temperature-compensated operating range: 5 °C ... +45 °C (ice free) - Units: m, cm, ft, mbar, psi Temperature measurement - Sensor: NTC - Measuring range: - 25 °C ... +70 °C (ice free) - Calibrated range: +5 °C ... 45 °C - Resolution: 0.01 °C - Accuracy: ±0.1 °C - Units: °C, °F Conductivity measurement Sensor: 4 graphite electrodes Measuring range 5 ... 2,000 µS/cm: - Resolution: 1 µS/cm - Accuracy: ±1 µS/cm or ±0.5 % of measured value (whichever is higher) - Unit: µS/cm Measuring range 0.1...100 mS/cm: - Resolution: 0.01 mS/cm - Accuracy: ±0.01 mS/cm or ±1.5 % of measured value (whichever is higher) - Unit: mS/cm Calibrated range: +5 °C ... 45 °C Temperature compensation options: freshwater, saltwater, standard method 2510, ISO 7888/EN27888 Salinity calculation options: Standard method, USGS 2311 Supply voltage 6 ... 27 V DC, typically 12/24 V DC Power consumption - SDI-12 sleep mode: <30 µAV - SDI-12 active mode: <32 mA Interfaces SDI-12, RS-485 (SDI-12 protocol) Storage temperature - 40 °C ... + 85 °C Cable length Depending on interface-variant: - SDI-12: 1...328 ft (1...100 m) - RS-485: 1...3,280 ft (1...1,000 m) Dimensions L x Ø Probe: 12.5 in x 0.9 in (317 x 22 mm) Weight - Probe: approx. 15.2 oz. (0.43 kg) - Probe cable: approx. 2.9 oz./m (82 g/m) Housing material probe POM, stainless steel (DIN 1.4539, 904 L), resistant to sea water Type of protection Probe: IP68 EMC limits Meets EG 2004/108/EC Meets EN 61326-1:2013 HY-OT-SW-ds-PLS_C-EN-221007 OTT HydroMet Tel: 800-949-3766 sales@otthydromet.com www.otthydromet.com