Endress+Hauser Analytik Jena multi N/C 2100S User Manual

multi N/C 2100S Fault removal
99
 Incorrect injection volume  The sample volume set in the method has to be injected
(manual metering!)
 faulty metering  check metering (see p. 100)
 particulate samples not or insufficiently stirred  stir particulate samples
 z coordinate adjustment for automatic locks not ok
(system leaking during injection into automatic lock)
 check sampler adjustment and readjust sampler if
necessary (see p. 65)
 For automatic locks: septum on syringe is no longer
tight
 replace septum on syringe
Low results for analyses through combustion (TC, TOC, NPOC, TN
b
)
TIC measurements are ok
Cause Remedy
 Catalyst depleted  when using platinum catalysts for multi N/C and
measuring in the differential mode (neutral samples,
slightly alkaline) the catalyst can be regenerated
 multiple injection (6 times) of acidified ultrapure water
 (with HCl to pH 2) or catalyst replacement if regeneration
unsuccessful or not lasting
 it is recommended to use 1 - 2 sample cups with acidified
ultrapure water for regeneration for each sample tray
 for measurements in NPOC mode (acidic samples) replace
the catalyst
 when using special catalyst for multi N/C replace the
catalyst
 Note: After a catalyst replacement a calibration must be
carried out.
 Use a cannula suitable for particles if the substance
contains particles
 particulate samples not or insufficiently stirred  stir particulate samples
 u coordinate adjustment for automatic TC lock
incorrect
 check sampler adjustment and readjust sampler if
necessary (see p. 65)
Low results for TIC measurements
Analyses through combustion (TC, TOC, NPOC) are ok
Cause Remedy
 no phosphoric acid in the reagent bottle for phosphoric
acid
 refill phosphoric acid
 faulty metering of the sample  check metering (see below)
 septum faulty  replace septum
Low results for TN
b
Cause Remedy
 Catalyst depleted  Exchanging the catalyst
 measurement outside the calibrated range  Pay attention to calibrated range
 use quadratic calibration or multiple range calibration
 Calibrate dependent on matrix when possible

Endress+Hauser Analytik Jena multi N/C 2100S Specifications

General

Brand	Endress+Hauser
Model	Analytik Jena multi N/C 2100S
Category	Measuring Instruments
Language	English