NIT No. 32 Item No.1

Specification Specification for GPS based Portable Multi-Parameter measuring equipment It shall be Potable Multi-Parameter testing equipment with facility to automatically capture the GPS location and depth of the measuring 09 parameters. The multi-parameter will be water-proof. All the sensors shall be housed in one rugged, shock resistance and chemical resistance housing. The probes can be changed in the field and will be made with chemical resistance material and easy to maintain. There shall be additional protection to pH electrode so it shall not break. There shall be backlit LED display to enable testing in the dark. It shall have auto calibration facility. The instrument shall be capable of capturing data instantaneously even while on move. The data can be transferred to computer in dedicated software supplied with the help of USB port. Other than this the Multi-parameter shall have internal data memory of 10,000 logs. The will be 30 meter cable to enable testing up to 30 meters with depth and location capture. PARAMETER SPECIFICATION Measuring parameter Measures total 09 parameter like pH, DO, Temperature, conductivity, Salinity, TDS, Temperature, Turbidity, Water depth, GPS LCD 320 x 240 liquid crystal display with backlight (black and white) Communication USB Data Memory 10,000 Battery C batteries x 4 Water resistance of Display Unit JIS protection level 7 (when sensor cable is fitted) Battery Life Approx. 500 Measurements Storage temperature -10 to 60℃ Ambient temperature 5 to 45℃ GPS Technology 12 Channel Parallel 12 Channel Parallel Data Hold Auto HOLD function available to freeze Data Software Separate Software will be provided with instrument for PC communication, Graph tend. Measurement temperature -5 to 55℃ Maximum sensor diameter Approx. 96 mm Probe length Approx. 340 mm Cable length 30 mtr. Turbidity wiper Confirm Turbidity Sensor Compliance method Turbidity Sensor Conforms to USEPA method 180.1 Measurement depth Max. 30 m Water resistance of Sensor Probe JIS protection level 8 PH sensor Measurement principle Glass electrode method pH Range 0 to 14 Resolution 0.01pH Repeatability ±0.05pH Accuracy ±0.1pH Dissolved Oxygen (DO) Measurement principle Polarography method Range 0 to 50.0 mg/L Resolution 0.01 mg/L Repeatability ±0.1 mg/L Accuracy 0 to 20 mg/L: ±0.2 mg/L 20 to 50 mg/L: ±0.5 mg/L PARAMETER SPECIFICATION Conductivity (COND) Measurement principle 4 AC electrode method Range 0 to 10 S/m (0 to 100 mS/cm) Resolution 0.000 to 0.999 mS/cm: 0.001 mS/cm; 1.00 to 9.99 mS/cm: 0.01 mS/cm; 10.0 to 99.9 mS/cm: 0.1 mS/cm; 0.0 to 99.9 mS/m: 0.1 mS/m; 0.100 to 0.999 S/m: 0.001 S/m; 1.00 to 9.99 S/m : 0.01 S/m Repeatability ±0.05% F.S. Accuracy *±1% F.S. (Median of two-point calibration Salinity Measurement principle Conductivity conversion Range 0 to 70 PPT (permillage) Resolution 0.1 PPT Repeatability ±1 PPT Accuracy ±3 PPT Total Dissolved Solid (TDS) Measurement principle Conductivity conversion Range 0 to 100 g/L Resolution 0.1% F.S Repeatability ±2 g/L Accuracy ±5 g/L Temperature Measurement principle Thermistor method Range -10 to 55℃ Resolution 0.01℃ Repeatability *±0.10℃ (at calibration point) Accuracy JIS class B platinum thermometer sensor (±0.3+0.005 | t |) Turbidity (TURB) Measurement principle Tungsten lamp source and 90°scattering method Range 0 to 1000 NTU Resolution 0 to 9.99 NTU: 0.01 NTU; 10 TO 99.9 NTU: 0.1 NTU; 100 TO 1000 NTU: 1 NTU Repeatability ±3% (Reading) or ±0.1 NTU whichever is greater Accuracy 0 TO 10 NTU : ±0.5 NTU: 10 to 1000 NTU: 3% (Reading) or ±1 NTU whichever is greater Water depth Measurement principle Pressure method Range 0 to 30 m Resolution 0.05 m Repeatability ± 1% of F.S Accuracy ±0.3 m

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