wtw pH 315i User manual

ba52308e02 03/2004
Handheld meter
pH 315i
ba52308e
Operating manual
PH
6
4
2
99
6
°
C
TP
AR
CAL
M
O
pH measuring instrument

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.

pH 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 pH value . . . . . . . . . . . . . . . . . . 15
4.2.2 Measuring the ORP voltage . . . . . . . . . . . . . . . 16
4.3 Calibrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3.1 AutoCal TEC . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3.2 AutoCal DIN . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.4 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.5 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 31
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

List of contents pH 315i
4

pH 315i Overview
5
1Overview
The compact precision pH 315i handheld meter enables you to carry
out pH measurements rapidly and reliably.
The pH 315i handheld meter provides the maximum degree of operat-
ing comfort, reliability and measuring certainty for all applications.
The proven MultiCal®calibration procedure and the special AutoRead
function support you in your work with the pHhandheld meter.
Note
If you need further information or application notes, you can obtain the
following material from WTW:
lApplication reports
lPrimers
lSafety datasheets.
You will find information on available literature in the WTW catalog or
via the Internet.
1Keypad
2Display
3Jack field
PH
6
4
2
99
6
°
C
TP
AR
CAL
M
O
1
2
3

Overview pH 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, pH 315i
2 Stand
3–KCI solution for electrodes
–50 ml pH buffer solution, STP 4
–50 ml pH buffer solution, STP 7
–Beaker, 50 ml
4 pH electrode
4
3
2
1

pH 315i Overview
7
1.2 Keypad
Key functions
RUN/ENTER
AR
CAL
M
Select the measuring mode <M>:
–pH value
–ORP voltage
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 pH 315i
8
1.3 Display
1.4 Jack field
Warning
Only connect electrodes to the measuring instrument that do not return
any unallowed voltages or currents (> SELV and > current circuit with
current limiting).
Almost all electrodes - in particular WTW electrodes - fulfill these con-
ditions.
1pH electrode
2Reference electrode
3Temperature probe
%
°F
S
ConCal
Auto Store
Time
Baud
Day.Month No.
Ident
Year
RCL
TempError
mg/L
% ppm
mol/L
ISE
8
8.
8
888
8
mV/pH
°C
UpH
LoBat
AutoCal DIN
CalError
ARng AR
AutoCal TEC
TP
1
Status display
Meas. value display
Function and
temperature display
Sensor symbol
Ref
12
3

pH 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.
Theoperatingmanualmustalwaysbeavailablewithinthevicinityofthe
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 ofthe measuring instrument consists exclusively of
the pH and ORP measurement in the field and laboratory.
Thetechnicalspecificationsas giveninchapter7 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 pH 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 safeoperationisnolongerpossible,theinstrumentmustbetakenout
of service and secured against inadvertent operation!
Safe operation is no longer possible if the measuring instrument:
lhas been damaged in transport
lhas been stored under adverse conditions for a lengthy period of
time
lis visibly damaged
lno 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:
lEEC directives for protective labor legislation
lNational protective labor legislation
lSafety regulations
lSafety datasheets of the chemical manufacturers.