Model ECTD-30V and ECTD-60V CTD (MTI.EWS.ER.M-ECTD-30V, ECTD-60V) sensors are available for monitoring electrical conductivity, water level and temperature in the ground. These arerobust, marine grade sensors. Model ECTD-30V CTD probe comes with the model EPP-30V absolute pressure sensor and ECTD-60V CTD probe is with model EPP-60V absolute pressure sensor. The ESDL-30CTDB datalogger,that collects the data from these sensors, has much of the complex circuitry, lowering the cost of individual sensors without impacting their accuracy or resolution.
Water Monitoring System Model ECTD-30V, ECTD-60V
• Sensor Type: Vibrating wire
• Parameter: Water level/pore pressure
• Range: 0.2, 0.35, 0.5, 0.7, 1.0, 1.5, 2.0, 3.5, 5.0, 10.0 MPa; specify
• Key Testing / Calibration: Thermal cycling (-20 to +80°C), Pressure cycling (2000 cycles), individually temperature compensated, reverse pressure test, individually calibrated providing high accuracy & repeatability
• Key Feature/Advantage: Hermetically sealed with electron beam welding
• Protection (Waterproofing): IP-68, water resistant up to its full range
• Dimension (mm): 42 Ø x 185 L
• Pressure sensor type: ECTD-60V - 10, 20, 35, 50 m WC ECTD-30V - 20, 35, 50, 100 m WC
• Temperature sensor type: Thermistor 30 kOhms
• Conductivity sensor type: 4 Electrode bulls-eye cell with cell constant of 0.42 ± 0.05
• SDI-12 Version: 1.3
• Vibrating wire pressure sensor range (model EPP30V or EPP-60V): 7 mWC / 20 mWC
• Conductivity sensor range: 5 120,000 μS/cm
• Accuracy: ± 0.5 % of reading + 1 μS/cm (for 5 80,000 μS/cm)1 ± 1 % of reading (for 80,000 120,000 μS/cm)2
• Resolution: 0.1 μS/cm (for 5 80,000 μS/cm) 1 μS/cm (for 80,000 120,000 μS/cm)
• Power supply: 12 VDC nominal
• Operating supply voltage range: 9.0 15.0 VDC
• Environmental protection: IP-68 (IS-60529:2001)
• Working temperature range: 0° to 60°C
• Storage temperature range: -30° to 75°C
• Dimension (Ø x L) AISI 304: 30 mm x 390 mm (ECTD-60V) 42 mm x 420 mm (ECTD-30V)
• Cable (option I): Two pair screened cable with Kevlar strength member
• Cable (option II): Two pair screened cable with Kevlar strength member and vent tube