NIT No. 10 Item No.1

Specification Specifications for Portable meter for measurement of DO The DO meter will be portable type and rugged with water resistant as per IP 67. It will have rubberized/ silicon protective Armor/cover to provide secure grip and protection against slip and fall damage. It will have the stand attached to the back of the housing that can also be used as a hanger or belt clip. The instrument will have PC interface with USB. The instrument will have data logger and the corresponding logger software that ensure simplified processing of the data obtained. The must not be any polarization during analysis Display Backlit LCD Data Logger Manual Logger: 1000 data sets (single value by keystroke). Auto. Logger: 10000 data sets (cyclic, time interval: 1 - 3600 s) Power Supply 2 AAA batteries Micro-USB Auto – OFF Yes Portability Portable Temperature Compensation Yes Compliance CE Measuring Range Oxygen 0-70 mg/ltr Temperature 0-40oC Technical Data for Oxygen Sensor Operating Temperature 0 - 40 C° Sensor Material Anode-Lead Cathode-Platinum Sensor Type Galvanic Integrated Temperature Sensor NTC 10 kΩ Outer Material ABS Measuring Range 0 - 70 mg/l O2 Concentration ; 0 - 600 % (O2 Saturation) Length 120 mm Diameter 12 mm Cable Length 30 m Deliverables: • Batteries • Oxygen sensor with 30 m cable • Elektrolyte solution (KOH) 100 ml • Calibration bottle with sponge • 2 pcs. spare membrane heads • Supplied with protective cap to provide counterweight for depth measurements and as protection against mechanical damage. Make:- Metrohm, Thermo Fischer Scientific- Orion, WTW, Lovibond,

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