wtw Oxi 315i User manual

Accuracy when
going to press
The use of advanced technology and the high quality standard of our
instruments are the result of continuous development. This may result
in differences between this operating manual and your instrument. Al-
so, we cannot guarantee that there are absolutely no errors in this man-
ual. Therefore, we are sure you will understand that we cannot accept
any legal claims resulting from the data, figures or descriptions.
Warranty We guarantee the instrument described for 3 years from the date of
purchase.
The instrument warranty covers manufacturing faults that are discov-
ered within the warranty period. The warranty does not cover compo-
nents that are replaced during maintenance work, e.g. batteries.
The warranty claim extends to restoring the instrument to readiness for
use but not, however, to any further claim for damages. Improper han-
dling or unauthorized opening of the instrument invalidates any warran-
ty claim.
To ascertain the warranty liability, return the instrument and proof of
purchase together with the date of purchase freight paid or prepaid.
Copyright ©Weilheim 2004, WTW GmbH
Reproduction in whole - or even in part - is prohibited without the ex-
press written permission of WTW GmbH, Weilheim.
Printed in Germany.

Oxi 315i List of contents
3
Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 SETs of equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Jack field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 10
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Switching on the measuring instrument . . . . . . . . . . . . . 13
4.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.1 Measuring the D. O. concentration . . . . . . . . . . 15
4.2.2 Measuring the D. O. saturation . . . . . . . . . . . . . 16
4.2.3 Measuring the D. O. partial pressure . . . . . . . . 16
4.2.4 Selecting the measuring range, AutoRange . . . 17
4.2.5 AutoRead AR (Drift control) . . . . . . . . . . . . . . . 18
4.3 Calibrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3.1 Starting the calibration . . . . . . . . . . . . . . . . . . . 20
4.4 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 23
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

List of contents Oxi 315i
4

Oxi 315i Overview
5
1 Overview
The compact precision Oxi 315i handheld meter enables you to carry
out oxygen measurements rapidly and reliably.
The Oxi 315i handheld meter provides the maximum degree of oper-
ating comfort, reliability and measuring certainty for all applications.
The proven OxiCal®calibration procedure and the special AutoRead
function support you in your work with the Oxihandheld meter.
Note
If you need further information or application notes, you can obtain the
following material from WTW:
Application reports
Primers
Safety datasheets.
You will find information on available literature in the WTW catalog or
via the Internet.
1Keypad
2Display
3Jack field
6
7
1
92
7
O
°
C
mg/l
ARng
TP
AR
CAL
M
O
1
2
3

Overview Oxi 315i
6
1.1 SETs of equipment
The measuring instrument is also available as part of individual SETs
of equipment.
You will find additional information on this and other accessories in the
WTW catalog or via the Internet.
Set (sample configuration):
1 Measuring instrument, Oxi 315i
2 Stand
3 – 50 ml ELY/G electrolyte solution for D.O. sensors
– 50 ml RL/G cleaning solution for D.O. sensors
– 3 WP 90/3 exchange membrane heads
– SF300 abrasive film for D.O. sensors
4 CellOx 325 D.O. sensor with calibration vessel
4
3
2
1

Oxi 315i Overview
7
1.2 Keypad
Key functions
RUN/ENTER
AR
CAL
M
Select the measuring mode <M>:
– D. O. concentration
– Oxygen saturation
– Oxygen partial pressure
Switch measuring instrument on/off
<ON/OFF>
Calibrate, select the calibration proce-
dure
<CAL>
Activate/deactivate the AutoRead
function
<AR>
Confirm entries,
start AutoRead
<RUN/ENTER>
M
CAL
AR
RUN/ENTER

Overview Oxi 315i
8
1.3 Display
1.4 Jack field
1Oxygen sensor
mbar
°
F
RCL
Auto
Store
1/
cm
/
K
%
TDS
UpH Sal
mV/pH
S/
m
cm
cm
M
Lin
Tref25 Tref20
nLF
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Ident
Year
S
8
8 .
8
88
8
O
°
Sal
C
%
mg/l
LoBat Cal
ARng AR
TP
1
Status display
Meas. value display
Function and
temperature display
Sensor symbol
1

Oxi 315i Safety
9
2 Safety
This operating manual contains basic instructions that you must follow
during the commissioning, operation and maintenance of the measur-
ing instrument. Consequently, all responsible personnel must read this
operating manual carefully before working with the measuring system.
The operating manual must always be available within the vicinity of the
measuring system.
Target group The measuring instrument was developed for work in the field and in
the laboratory.
We assume that, as a result of their professional training and experi-
ence, the operators will know the necessary safety precautions to take
when handling chemicals.
Symbols
used
Warning
indicates instructions that must be followed to prevent damage to your
instrument.
Note
indicates notes that draw your attention to special features.
Note
indicates cross-references to other documents, e.g. application re-
ports, operating manuals of probes, etc.
2.1 Authorized use
The authorized use of the measuring instrument consists exclusively of
the measurement of the oxygen content in the field and laboratory.
The technical specifications as given in chapter 7 TECHNICAL DATA must
be observed. Only the operation and running of the measuring instru-
ment according to the instructions given in this operating manual is au-
thorized.
Any other use is considered to be unauthorized.

Safety Oxi 315i
10
2.2 General safety instructions
This instrument is built and inspected according to the relevant guide-
lines and norms for electronic measuring instruments (see chapter 7
TECHNICAL DATA).
It left the factory in a safe and secure technical condition.
Function and operating
safety
The smooth functioning and operational safety of the measuring instru-
ment can only be guaranteed if the generally applicable safety mea-
sures and the specific safety instructions in this operating manual are
followed during operation.
The smooth functioning and operational safety of the measuring instru-
ment can only be guaranteed under the environmental conditions that
are in specified in chapter 7 TECHNICAL DATA.
If the instrument was transported from a cold environment to a warm
environment, the formation of condensate can lead to the faulty func-
tioning of the instrument. In this event, wait until the temperature of the
instrument reaches room temperature before putting the instrument
back into operation.
Safe operation If safe operation is no longer possible, the instrument must be taken out
of service and secured against inadvertent operation!
Safe operation is no longer possible if the measuring instrument:
has been damaged in transport
has been stored under adverse conditions for a lengthy period of
time
is visibly damaged
no longer operates as described in this manual.
If you are in any doubt, please contact the supplier of the instrument.
Obligations of
the purchaser
The purchaser of the measuring instrument must ensure that the fol-
lowing laws and guidelines are observed when using dangerous sub-
stances:
EEC directives for protective labor legislation
National protective labor legislation
Safety regulations
Safety datasheets of the chemical manufacturers.