
JUMO GmbH & Co. KG
Delivery address: Mackenrodtstraße 14
36039 Fulda, Germany
Postal address:
36035 Fulda, Germany
Phone: +49 661 6003-0
Fax: +49 661 6003-607
Internet: www.jumo.net
JUMO Instrument Co. Ltd.
JUMO House
Temple Bank, Riverway
Harlow, Essex CM20 2DY, UK
Phone: +44 1279 635533
Fax: +44 1279 635262
Internet: www.jumo.co.uk
JUMO Process Control, Inc.
6733 Myers Road
East Syracuse, NY 13057, USA
Phone: 315-437-5866
1-800-554-5866
Fax: 315-437-5860
Internet: www.jumousa.com
V1.00/EN/00520247
Page 2/12Data Sheet 202566
(3)Keyboard inhibited
(4)Alarm has been activated
(5)Instrument is in manual mode
(6)Instrument status
(7)Medium temperature
(8)Main measurement
(9)Unit of main measurement
The user can specify what is to appear in
positions (7) and (8) of the display:
-Nodisplay
- Corrected or uncorrected measurement
-Temperature
- Output level 1 or 2
-Setpoint1or2
Operation
To make programming and operation easy, all
parameters are clearly assigned to levels and
displayed in plain text. Operation is protected
by a code word. Operation can be adapted on
an individual basis because parameters can
be generally enabled or assigned to the
protected area.
A setup program for the PC is available as a
more convenient configuration option, rather
than using the instrument keyboard.
Display modes
Three display modes are available:
Large numbers
Here the measurements are displayed in
numbers, as usual.
Trend display
Here the numerical value is supplemented by
a symbol to indicate the direction and speed
of change for the measurement.
This can be very useful when the controller is
being optimized, for example.
from left to right:
fast, medium and slow rise,
steady,
slow, medium and fast fall.
Functional description
The instrument is designed for on-site use. A
robust housing protects the electronics and
electrical connections against aggressive
environmental conditions (IP67). As an
alternative, the instrument can also be
installed in a panel; the front then has IP65
enclosure protection. Easily installed screw
connectors are used for electrical connection.
A ventilation screw with a PTFE membrane
prevents condensation buildup.
Transmitter
The transmitter receives the measurement
signal from the inductive measuring cells of
the JUMO tecLINE Ci series, see data sheet
202941.
With the inductive measurement method,
acquisition of specific conductivity is largely
maintenance-free, even in the most difficult of
medium conditions. Unlike the conductive
measurement method, there are practically no
problems such as electrode breakdown and
polarization.
By acquiring the temperature of the sample
medium, the instrument can automatically
perform temperature compensation.
Components of the measurement
chain
Displays and controls
(1)Switching output 1 or 2 is active
(2)Binary input 1 is triggered
(1) JUMO tecLine Ci, inductive
conductivity and temperature sensor
(2) Cable
(JUMO tecLine Ci component)
(3) JUMO AQUIS 500 Ci, transmitter/
controller for conductivity,
concentration and temperature
(1) (2) (4) (5)
(6) (7) (8) (9)
(3)
Bar graph
In this display mode, it only takes a glance to
ascertain the range for the current
measurement.
Any scale can be used for the bar graph.
Function modes
Electrolytic conductivity
µS/cm or mS/cm are the units used for
display and control.
Concentration measurement
Caustic soda
NaOH0 to 12 % by weight
NaOH25 to 50 % by weight
Nitric acid
HNO30to25%byweight
HNO336 to 82 % by weight
Sulphuric acid
H2SO40to28%byweight
H2SO436 to 85 % weight
H2SO492 to 99 % by weight
Hydrochloric acid
HCl 0 to 18 % by weight
HCl22 to 44 % by weight
Customized table
In this mode, the input value (specific
conductivity) can be displayed in accordance
with a table (max. 20 value pairs). This
function can be used to implement simple
concentration measurements, for example.
Table values can only be entered using the
optional setup program.
Calibration
Cell constant
Because of manufacturing constraints, the
cell constant of a conductivity measuring cell
may differ slightly from its nominal value.
Wear or the accumulation of deposits during
operation can also cause the cell constant to
change. This changes the output signal from
the measuring cell. With this instrument, the
user has the opportunity to compensate for
deviations in the nominal value of the cell
constant by manual input, or by automatic
calibration of the relevant cell constant.
Installation factor
This parameter can be used to compensate
for unfavorable sensor mounting conditions.
Temperature coefficient
The conductivity of virtually all solutions is
temperature dependent. To ensure correct
measurement therefore, both the temperature
and the temperature coefficient a [%/C] of the
measurement solution must be known. The
temperature can either be measured
automatically with a Pt 100 or Pt 1000
temperature probe, or the user must set the