the 2100an and 2100n laboratory turbidimeter  display in units of nephelos (0-67 000 nephelos), ebcs (european brewery convention, 0-2, 450 ebcs), % transmittance, absorbence or colour units (apha ptco method). in addition, two application specific calibrations may be specified by the analyst. the application specific mode uses the nephelometric optical system in the same manner as the ntu measurement mode. special method development and sample characterisation also can be accomplished using the signal output from any of the four detectors.

features/benefits：

key benefits of the 2100an/2100n turbidity meters:

• easy calibration - display prompts the analyst for each standard and automatically adjusts the curve as needed. there are no manual potentiometers to adjust.
• easy operation - simply place the sample cell in the compartment and close the light shield.
• low range measurement - resolution to three decimal places between 0 and 1.000 ntu.
• wide range measurement - measure up to 4000 ntus with the 2100n or up to 10,000 ntus using the 2100an turbidimeter.
• multiple unit se-lection - display ntus, nephelos, ebcs and more.
• ratio and non-ratio measurement modes - operator se-lectable modes.
• built-in printer (2100an model) - output data to external computer or printer using rs232.
• flow cell - instruments accommodate a range of time-saving flow-cell accessories.

both the 2100an and 2100n turbidity meters offer these important features:

• expanded ranges - designed to measure turbidity over a wide range using three se-lectable readout modes--0 to 4000 ntus; 0 to 26,800 nephelos; and 0 to 980 ebcs--with manual or automatic range se-lection and decimal point placement in each range.
• optional ratioing - one keystroke switches the instrument from the multidetector ratio mode to the non-ratio, single 90?detector measurement mode.
• signal averaging - minimizes noise and display fluctuations to provide true baseline measurements. function may be se-lected on or off.
• easy calibration - calibration has never been easier with the step-by-step protocol built into the instrument"s microprocessor. there are no manual potentiometers to adjust.
• air purge system - a built-in air purge connection is provided to purge the optical compartment with dry air and minimize condensation on the sample cell.
• flow-cell capability - instrument accommodates any of three specially-designed optional flow-cell systems for improved reproducibility, accuracy and convenience.
• regulatory reporting - the 2100n and 2100an turbidimeters meet usepa design and performance criteria specified in usepa method 180.1.
• easy to operate and maintain - convenient push-button switches on the front panel pace the user through microprocessor-controlled options for instrument operation and calibration.
• bright led display and clear annunciators - digital display is easy to read under varied lighting conditions and viewing angles.
• rs232 input/output - this feature enables user to output data to a computer or external printing device.
• self diagnostics - self-test diagnostics detect error conditions. error messages are referenced in the manual with corrective action information. comprehensive information also is reported to permit trained service technicians to diagnose malfunctions precisely by telephone, fax or mail.
• meets worldwide industry safety and electronic design standards - listed to ul 1262 and certified to csa 22.2 no. 1010.1 by edison testing laboratories (etl). carries the european ce compliance mark.

features exclusive to 2100an turbidity meter    wider turbidity measurement range - 0 to 10,000 ntus; 0 to 67,000 nephelos; and 0 to 2450 ebcs--with automatic range se-lection and decimal point placement in each mode.

measures absorbance, % transmittance or color - user can se-lect from one of four measurement modes: turbidity, absorbance, transmittance or platinum-cobalt color units.

interchangeable 455 nm color filter for apha pt-co color measurement - a flow-thru cell is recommended when measuring color.

user specified unit display - enables user to customize units as needed for specific applications.

independent detector monitoring - independent detector signal readouts enable special method development or sample characterization.

programmable signal averaging - stabilizes displayed value if large or irregular shaped particles cause measured value to fluctuate excessively. user adjustable to 15 seconds.

built-in printer - features a built-in 28 column thermal printer.

real-time clock - permits date and time recording for measurements and calibration records. information is included in the printer report and rs232 data output.

sample identification number - identifies sample by number and includes information in the printer report and rs232 data output.

flow-cell capability - instrument accommodates any of three convenient flow-cell systems for improved accuracy and convenience in the laboratory. 2100an software enables operator to program flow time, duration, and static or dynamic measurements.

recorder output - recorder output expands instrument recording capability. internal printer, external rs232 and recorder outputs send signals simultaneously.

specifications：