Supply of SOIL MOISTURE SENSOR, WEATHER STATION (Requisition 7022/26/0071)
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Description & Project Overview
Sultan Qaboos University is requesting quotations for Equipment under Requisition Number 7022/26/0071. Required Line Items: 1. SOIL MOISTURE SENSOR [EQUINSSEN0003] - Quantity: 10 Nos Specifications: Terros12 Soil moisture sensors from Meter Group Company. specifications Volumetric Water Content Range Mineral Soil Calibration: 0.00–0.70 m3/m3 Soilless Media Calibration: 0.0–1.0 m3/m3 Apparent Dielectric Permittivity (εa): 1 (air) to 80 (water) NOTE: The VWC range is dependent on the media the sensor is calibrated to. A custom calibration will accommodate the necessary ranges for most substrates. Resolution 0.0010 m3/m3 Accuracy Generic Calibration: ±0.03 m3/m3 (±3.00% VWC) typical in mineral soils that have solution EC <8,000 μS/cm Medium Specific Calibration: ±0.01–0.02 m3/m3 in any porous medium Apparent Dielectric Permittivity (εa): 1–40 (soil range), ±1 εa (unitless) 40–80, 15% of measurement Measurement Specifications Temperature Range: –40 to +60 °C Resolution: 0.10 °C Accuracy: ±1.0 °C from –40 to 0 °C ±0.5 °C from 0 to +60 °C Dielectric Measurement Frequency 70 MHz Bulk Electrical Conductivity (EC) Range: 0–20,000 μS/cm (bulk) Resolution: 1 μS/cm Accuracy: +/- (5% + 10 μS/cm) from 0–10,000 μS/cm +/- 8% from 10,000–20,000 μS/cm 2. WEATHER STATION [EQUAESIRR0004] - Quantity: 1 Nos Specifications: Wireless ET Weather Station (900MHz RadioCommunication) measures Temperature, Relative Humidity, Rainfall, Wind Speed/Direction, Solar Radiation and ET.