1. Dual mode of automatic calibration method which instrument eliminates errors and traditional direct input method.
2. Automatic calibration method which instrument eliminates errors: this method eliminates system errors which are caused by the difference between the exterior calibration of instrument and the instrument titration (calibration) and makes the system precision higher.
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Model
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OLT-987
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OLT-987N
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Working Process
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Adding quantitative sample dilution, alkali liquor and absorption liquid;
Automatically finishing distillation, titration, print and liquid-discharging.
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Measurement Range
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0.1-240mgN
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Measurement Sample Amount
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Solid<6g liquid<16ml
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Measurement time
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4-8 minutes
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Titration Precision
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2.0Ul/step
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0.5Ul/step
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Titration Solution Concentration
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Direct titration samples with 4 titration concentrations of 0.1mol,0.5 mol and 1 mol
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Titration System
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High-precision plunger type titration system
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High-precision peristaltic titration system
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Executive Standard
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Comply with stipulations of AOAC, EPA, DIN, ISO AND GB
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Repeatability Precision
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±0.5%
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Recovery Ratio
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≥99.5%
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Data Storage
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Effective storage space 2G
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Print Function
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110mm line printer which can realize user selective print function
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Power
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1800w
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Power Supply
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108V-250v/50Hz
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Requirement of Cooling Water
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Under 25ºC
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Cooling Water Consumption
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1.5L/min (Distillation process)
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Safety protection system:
1. Digestion tube vacant protection: the system will not heat up if the digestion tube isn't put in.
2. Safety door vacant protection: if the safety door isn't pull down, the system will not heat up.
3. Automatic water-replenishing function of steam cylinder: when the steam generator has no water or its water level not high enough, the system will replenish water automatically to avoid burning without water.
4. Steam overpressure protection: when the pressure of steam generator system is too high because of the blocking and breakdown of steam pipeline or abnormal steam pipeline, the system will automatically stop running and give an alarm
5. Leakage protection: when system has leakage of electricity or the operator gets an electic shock by accident, the system will switch off the electricity and cut off power supply to make sure the operator is safe.
Optional accessories:
OLT Series Kjeldahl Digestion Furnace:
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Model
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OLT-20A/B
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OLT-12A/B
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OLT-8A/B
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Design temperature
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RT-500 ºC
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Temperature control precision
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±1 ºC
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Input power
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3.6KW
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2.8KW
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2KW
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Source voltage
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AC220V
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Working current
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17A
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13A
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10A
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Heating elements
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Aluminum alloy heating board (Nichrome wire)
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Temperature rise rate
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20 ºC/min
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Number of heating orifices
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20 orifice
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12 orifice
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8 orifice
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Test tube capacity
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250ml±0.25ml
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