Koehler K905 Series Guide

Operation and Instruction Manual
Koehler Instrument Company, Inc.
1595 Sycamore Avenue • Bohemia, New York 11716-1796 • USA
Toll Free: 1-800-878-9070 (US only) • Tel: [phone] • Fax: [phone]
http://www.koehlerinstrument.com • e-mail: [e-mail]
Petroleum Testing & Analysis Instrumentation • Custom Design & Manufacturing
K905XX
Automatic Potentiometic Titrator

CERTIFICATE OF CONFORMANCE
Automatic Potentiometric Titrator
K905XX
This certificate verifies that part number K905XX, Automatic Potentiometric
Titrator, was manufactured in conformance with the applicable standards
set forth in this certification.
Specifications: ASTM D664
ASTM D2896
ASTM D3227
ASTM D4739
This unit is tested before it leaves the factory, to ensure total functionality
and compliance to the above specifications and ASTM standards. Test and
inspection records are on file for verification.
Jesse Kelly
Application Engineer
Koehler Instrument Company

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C O N T E N T S
SECTION 1
Introduction
5
Specifications
5
Features
6
SECTION 2
Familiarization with instrument
9
Front Panel – Keyboard Layout and Functions
10
SECTION 3
Instrument Operation - Switching ‘ON’ the instrument
12
1) Develop Method

Generating the Quick Method
13

Viewing & Running & Copying the Last Quick Method
15
Generating the Full Method
19

Viewing, Copying, Skipping & Running Full Method
41
2) Function

Standardization & Calibration
45
mV indicator & Priming
47

Priming
47

Burette Replacement
48
Manual Titration
49
3) Configuration

Setting RTC (Clocl)
50
Balance Connectivity
50

Temperature Compensation
50

Printer Selection
51
Password Entry
51
Data Transfer
52

Resolution Selection
53

Titrant Temp Factor
53
4) Print

Printing Last Titration Result
54

Printing Data Table
55

Printing The Titration Analysis
Condensed Report
55

Printing the Titration Statistics Report
55
Printing pH Calibration Report
55
Printing Method Parameters
56

Printing mV v/s
µ
l Grapha Report
56

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5) Display

Display Result
57
Display Statistics
57
Display Calibration Data
57
6) Reprocess
58
7) Run
Run Last Method
59

Run New Method
60

Run Last Quick Method
61
SECTION 4
Result Calculation
64
Entering Blank Volume/Primary Dose
65
Entering Constant related to Sample
66
Automatic determining and storing of molarity
68
Maintenance and cleaning of burette
68
Maintenance and cleaning of electrode
69
Appendix A : Alphanumeric entry
70
Appendix B : Error Codes
71
Appendix C : Printer DIP switch setting
73
Appendix D : Parameter selection table
74
Appendix E : Titration Type
76
Appendix F : Titration Modes
77
Appendix G : Method Parameters
78
Appendix H : Sample Analysis Parameters
79
Appendix I : Calculation Parameters
81
Appendix J : Standard Methods (41-50)
82
Appendix K : PC Setup instruction for Data Downloading
87
THE CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE.

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SECTION 1
•Introduction
•Specifications
•Features

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K905XX- AUTOMATIC POTENTIOMETRIC TITRATOR
INTRODUCTION
An Automatic Titrator is a combination of electrochemical potential measurement through
electrode with microprocessor driven burette, thus increasing the accuracy of measurement.
The instrument is capable of performing almost all basic titrametric functions and cater to all
types such as 1) Aqueous 2) Non-aqueous 3) Redox 4) Precipitation / Argentometric
5) Complexometric / EDTA 6) Voltametric 7) Back titration with simplicity. User can define
particular method for a specific titration.
SPECIFICATIONS :
Control : Micro-controller based.
Burette : 1ml, 5 ml or 10 ml capacity, interchangeable. 25 ml Optional.
Burette resolution : 1/10000 for 10 ml , 1/5000 for 5 ml and 1/1000 for 1 ml.
Filling time : < 20 seconds.
Principle : Volume determination by equivalence point, end point or pH STAT.
Modes of operation : a)Incremental b)Equilibrium c)Cut-off by pH d)pH STAT titration.
Methods : a)Acid-base b)Non-aqueous c)Redox d)Precipitation
e)Complexometric f)Back g)Photometric h) Thermometric.
mV range : ±3200 mV
Accuracy : ±0.1 mV (±0.0016 pH).
Amplifier Input Impedance : > 10 12 ohms.
End Point detection : a)Potentiometric b)Voltametric c)Thermometric and d)Photometric.
Cut-off criteria : a) Volume b)End point c)mV/pH.
Results : Molarity, % Assay (wt), % volume (ml) , ppm , mg/l, mg/g, g/l,
meq/l, mol/kg, TAN and TBN for oil samples.
Sensors : 1)Electrodes for Potentiometric titration - pH, Ion, Redox,
Precipitation. a)Any combination electrode with BNC connector,
b)Differential System comprising Sensing (Indicator) with BNC and
Reference (4mm banana connector). 2) Electrodes for
KF/Voltametric titration with TNC connector. 3) Temperature
(PRT/PT100) for ATC with 5-pin shell connector
Calibration : 3-point Calibration with user entered buffer values and
standardization (7pH)
Titration Head : Manual stand with swiveling arm for electrode, dispensing tip &
stirrer is provided as standards
Stirring System : Micro-controller based variable speed, high torque stirrer with
indication.
Data Storage : Non-volatile memory.
Method Storage : 50 methods with parameters.
Titrant Molarity storage : within Method data.
Input/Output Peripheral Interface : a) Parallel Port : 1 No. for printer.
b) Serial Port : 2 Nos. for Balance & PC.
Report Format : Selection of various formats -a) Method parameters b) Titration
analysis report c) Titration analysis condensed report d) Titration
data table e) Titration graphic report - 1) µl v/s mV 2) µl v/s First
derivative 3) µl v/s Second derivative 4) µl v/s time. f) Statistics
report g) Calibration report.
Keyboard : Alphanumeric splash water proof polyester soft keys.
Display : 40 x 2 line back lighted LCD display.
Convertibility : Can be used KF titrator for Moisture estimation with KF burette
system (Optional)

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Environmental Operating Conditions :
a) Operation : Indoor.
b) Temperature : Ambient to 45 °C
c) Operating Temperature and humidity : +5 to 45°C Max, 5 to 90%
non condensing.
d) Storage Temperature and humidity : +5 to 45°C Max, 5 to 90%
non condensing.
e) Altitude in meters: up to 2000m
Power : 110V/220V AC ±10%, 60/50Hz. 40W.
Weight and dimensions :
Control Unit : 12 inch x 12 inch x 6 inch (W X D X H)
Titration unit : 12 x 16 x 16 (W X D X H)
with Vortex Stirrer
Magnetic Stirrer : 6 x 10 x 10 (W X D X H)
(For KF Titration - Optional)
System Weight : 9 Kg.
FEATURES:
•Advanced Micro-controller based user-friendly state-of-the-art product design with
alphanumeric splash waterproof polyester soft keys for keyboard and User interactive
software in dialogue mode for ease of operation.
•Quick interchangeable burette assemblies with intelligent recognition for its volume size.
Burette factor for dispensing correction is available for true end point volume.
•Alphanumeric entry of Sample Name, Titrant Name, Identification Number, Date & Time
with type of electrode used for authentication. Daily Auto Incremented Run number and
Factory entered CUSTOMER NAME & Instrument Sr.No. on report printouts make the
system foolproof and GLP compliant.
•Protection against invalid parameter entries during method generation.
•Storage of 40 User methods with parameters. (Plus10 not editable – Default methods)
•Two Tier - ADMIN & USER Password Protection for Method data during ADD/EDIT,
DELETE, COPY, and for Calibration.
•Three modes of titration - incremental, equilibrium and cut-off by pH mode to perform
almost all types of titration. By selecting titration method, instrument prints the type of
appropriate electrode.
•Automatic selection of Sensor Input as per titration method selected.
•During titration, the measured variable i.e. electrode potential (mV) or pH value is shown
on display together with dispensed volume and number of End Point (EP) detected.
•User selectable End Point (EP) evaluation up to 9 EP during the run, and calculation by
first, last, largest, all or selected EP with display of results and printout.
•Composite Differential Electrode Amplifier unit for potentiometric and voltametric / KF
titration, having BNC connectivity to various electrodes and temperature sensor for
indication.
•Capability to use as simple pH meter with display of pH, mV values & Temperature display.
•Facility to use as a dispenser for fixed volume dosing or dilution allows to perform manual
titration with user defined dose and mV indication.
•User Programmable selectivity for report format, complying with GLP requirements: a)
Report giving titration parameter and result. b) Data table giving mV, pH, δmV, mV/ml, 2nd
Deriv. and volume. c) Graphics report giving mV v/s µl titration curve. d) Graphics report 1st
deriv. graph v/s µl titration curve e) Graphics report of 2nd deriv curve. f) Report of method
parameters for 50 methods. g) Condensed report of titration parameters and results. h)
Auto evaluation report for multi EP samples - EP1, EP2-EP1 & EP3-EP2 etc. available.
The reports can be obtained even after resetting/power off / power fail conditions or Run
Aborted.

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FEATURES: contd…
•Result calculation facility to obtain printout in different units such as molarity, factor, %
assay (wt), % volume (ml), ppm, mg/l, mg/g, ml/g, g/l, mEq/l, mol/kg, TAN & TBN.
•Reprocessing of threshold and recalculation of EP without performing the new run.
•Display and printout of daily Auto Incremented Run (AIR) number which makes system
foolproof and GLP compliant.
•Statistic function with run selectivity for finding Mean, SD, RSD & CV of last 10 repeat run
results could be viewed or printed.
•Real Time Clock (RTC) for time display and report printout with run time indication.
•Special Method Compliant to ASTM D664, D2896 & D4739 for TAN and TBN analysis for
oil samples.
•Automatic evaluation of molarity determination of titrant.
•Quick Method for Trial analysis RUN having only titration parameter.
•Error indication on Display, helps user to trace the problem.
•Titration run can be started with last run parameters.
•Display of last run or default parameters while entering or running method.
•Display of stir time after pre-dispensing (with selectable dose and time).
•Escape and Back keys for better user interaction.
•Vortex stirrer for homogeneous stirring with glass propeller (provides chemical inertness).
•Digital Speed control of vortex and magnetic stirrer with indication.
•Availability of optional in situ accessory for Titration Vessel heating to perform titration
from ambient+10°C to 80 °C. Cooling can be achieved with external chiller.
•PC Compatibility – RS232 interface for Data Downloading to Result Data Capturing
Software (Ethernet based) or Windows Hyper Terminal Software (Optional).
•Balance interface for automatic sample weight transfer.
•K905XX can be converted to perform Karl Fischer titration by just changing burette
assembly.