Press NIT No. 29 2022 23

Specification of kjeldhal Nitrogen analyzer The Kjeldhal nitrogen analyzer unit will be integrated single unit with control panel along with inbuilt temperature controller, timer, mother board. The SMPS will be isolated in separate control tower and housing to protect electronics from wet chemistry & acid/ alkali process. The technical specifications are as under: Material of construction MS with powder coated finish Operations Digestion, Distillation and Scrubbing in one integrated unit. Cooling System & Automatic Through water coil condenser in higher models No of samples 6 nos Tube dimension 42 x 300mm Tube capacity 250ml (Borosilicate Glass 3.3) Process controller 4.3” TFT touch screen controller Mode of operation Auto and Manual Digestion Heating block Extruded Aluminum block HE 30 Grade 6063 for 6 samples Digestion Heater Casted Aluminum alloy heater IS 4159 Digestion Heater wattage 1500 W Digestion Temperature controller PID controller Digestion Temperature Range 50 degree to 450 degree Digestion temperature accuracy +/- 1% Digestion temperature sensor Chromal K type thermocouple upto 1200°C Digestion program 5 program and 5 steps Digestion program parameter Temperature and time Digestion block insulation Ceramic wool Digestion acid fumes removal Teflon adaptor fuse to manifold using & outlet connected to the glass suction pump Handle Polyamide Two tier console To place Insert rack and Manifold Rack Digestion tube insert Rack Stainless steel-SS304 Digestion Manifold Rack Stainless steel-SS304 Digestion Drip Tray Stainless steel-SS304 Exhaust fume condensation In water Scrubber tank Stainless Steel 304 Scrubber water leveller Float switch Scrubber tank capacity 10 litre Scrubber suction pump Giant filter pump Distillation expansion vessel Glass vessel with Teflon insert for alkali addition inlets Nippon’s for alkali addition and steam addition Scrubber water re-circulation pump 2 Magnetic pump with flow rate of 18L/min Scrubbing Tubing Hardness Silicone tube 70±5 shore A, Temp. resistance -60°C to +200°C Real time monitoring of process yes No of distillation One at a time Distillation programme 5 program/3 steps Distillation Programme steps Alkali, reaction delay and Process Distillation Dosing pump For alkali addition 24 DC Motor 500 ml/min Distillation steam Generator Stainless steel-SS304 with pressure release valve to back suction of sample Distillation water condenser Glass with 2 bulb and coil condenser Distillation solenoid valves For Steam, Refilling and Vent Distillation Heater Immersion Heater Distillation Heater Wattage 1500 W Distilled water tank PVC Distilled water tank capacity 5 Lit Distillation Reagent tank PVC Distillation Reagent tank capacity 2 lit Electrical requirement 230v/50Hz/16A Real Time Monitoring of Process Yes Nitrogen recovery 99.5% Nitrogen reproducibility +/-1% RSD <1% LOD 1-200 mg with >_0.1mg of Nitrogen Total Time for process 2.5 Hours

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