Knick Stratos Pro A2 PH Series User manual

Kurzübersicht............... 21
Guide rapide ................ 38
Inicio rápido ................. 55
Início rápido ................. 72
Quickstart Guide............3
Guida rapida................. 89
T
he Art o
f
Measuring
.
Latest Product Information: www.knick.de
Stratos Pro A2.. PH
pH Measurement
Quickstart

2
HART: Typical Applications
8
9
17
+ out
- out 1
- out 2
A2...
4 ... 20mA
HART Terminal
8
9
17
+ out
- out 1
- out 2
+
-
Power supply
A2...
Uout
min 19V
250 Ohm
4 ... 20mA
HART Terminal
1
2
WG 21 5
6
HART Terminal

3
Quickstart
Measuring Mode
After the operating voltage has been connected, the analyzer auto-
matically goes to“Measuring“ mode. To call the measuring mode from
another operating mode (e.g. Diagnostics, Service):
Hold meas key depressed (> 2 s).
Depending on the conguration, one of the following displays can be
set as standard display for the measuring mode (see page 6):
• Measured value, time and temperature (default setting)
• Measured value and selection of parameter set A/B or ow
Measured value and tag number (“TAG”)
• Time and date
• Output currents
• Controller (4-wire devices only)
Upper display: controller output Y, lower display: setpoint
Note: By pressing the meas key in measuring mode you can view the
displays for approx. 60 sec.
The device must be congured for the respective measurement
task!
Sensoface indicator
(sensor status) Active parameter set
(conguration)
Display indicates
OUT1: e.g.
process variable
Display indicates
OUT2: e.g.
temperature
enter key
Time (or ow)
Mode indicator
(measuring)
Hold meas key
depressed for calling
the measuring mode
(pressing once more
switches the display)

4
Keypad
Key Function
meas • Return to last menu level
• Directly to measuring mode (press > 2 s)
• Measuring mode: other display
info • Retrieve information
• Show error messages
enter • Conguration: Conrm entries,
next conguration step
• Calibration:
Continue program ow
menu • Measuring mode: Call menu
Arrow keys
up / down • Menu: Increase/decrease a numeral • Menu: Selection
Arrow keys
left / right • Previous/next menu group • Number entry: Move between digits
Sensocheck, Sensoface sensor monitoring
Sensocheck continuously monitors the sensor and its wiring.
Sensocheck is user-dened (default: O).
Sensoface provides information on the sensor condition.
The three Sensoface indicators provide information on
required maintenance of the sensor.
When Sensoface is“sad”, the display turns purple.
Pressing the info key shows an information text.

5
Display
MEMO SENS
1234 567 891011
171819202122
12
13
14
15
16
23
24
Signal colors (display backlighting)
Red
Red blinking Alarm (in case of fault: display values blink) Input error: illegal value or wrong passcode
Orange HOLD mode (Calibration, Conguration, Service)
Turquoise Diagnostics
Green Info
Purple Sensoface message
1 Temperature
2 Sensocheck
3 Interval/response time
4 Sensor data
5 Not used
6 Limit message:
Limit 1 or Limit 2
7 Alarm
8 Service
9 Parameter set
10 Calibration
11 Digital sensor
12 Waiting time running
13 Info available
14 Hold mode active
15 Main display
16 Secondary display
17 Proceed using enter
18 Not used
19 Diagnostics
20 Conguration mode
21 Calibration mode
22 Measuring mode
23 Sensoface
24 Unit symbols

6
Display in Measuring Mode
meas
meas
enter
enter key
meas key
By pressing meas briey you can
step through further displays such as
tagnumber (TAG) or ow (L/h).
These displays are turquoise.
After 60 sec they switch back to the
main display.
Press enter to
select a display as
MAINDISPLAY –
the secondary display shows
“MAINDISPLAY – NO“.
Use the UP / DOWN arrow keys to
select“MAIN DISPLAY –YES“
and conrm by pressing enter.
The display color changes to white.
This display is now shown in
measuring mode.
The MAIN DISPLAY is the display
which is shown in measuring mode.
To call the measuring mode from
any other mode, hold the meas key
depressed for at least 2 sec.
approx. 2 s

7
Selecting the Mode / EnteringValues
To enter a value:
5)Select numeral: left / right arrow key
6)Change numeral: up / down arrow key
7)Conrm entry by pressing enter
To select the operating mode:
1)Hold meas key depressed (> 2 s) (measuring mode)
2)Press menu key: the selection menu appears
3)Select operating mode using left / right arrow key
4)Press enter to conrm the selected mode
Selection menu
Selected mode
(blinks)
1
4
3
2
57
6

8
Manual activation of HOLD mode, e.g. for sensor replacement.
The signal outputs behave as configured (e.g. last measured value, 21 mA)
pH adjustment (as configured)
ORP adjustment
Product calibration
Zero adjustment
Adjustment of temperature probe
Configuring parameter set A
Configuring parameter set B
Display of measured values for validation (simulators)
Current source, output 1
Current source, output 2
Relay test
Controller: manual specication of controller output
Specifying access codes for operating modes
Reset to factory setting
Enabling an option via TAN


(Access via
code, factory
setting:
5555)
Display of calibration data
Display of sensor data
Self test: RAM, ROM, EEPROM, module
100 events with date and time
Display of measured values (mV_pH, mV_ORP, RTD,
resistances of glass electrode, reference electrode)
Display of software version, model designation, serial number


Operating Modes / Functions
Pressing the menu key (down arrow) opens the selection menu.
Select the menu group using the left/right arrow keys.
Pressing enter opens a menu item. Press meas to return.

Meas. mode
(main display
selectable)
TAG display A4... only: Controller
parameter display
(if configured)
after 60 s after 60 s
CLK display

9
Overview of Configuration
The conguration steps are assigned to dierent menu groups.
With the left/right arrow keys you can jump between the individual
menu groups.
Each menu group contains menu items for setting the parameters.
Pressing enter opens a menu item. Use the arrow keys to edit a value.
Press enter to conrm/save the settings.
To return to measurement: Hold meas key depressed (> 2 s).









Select menu
group Menu group Code Display Select menu item
Sensor selection
Menu item 1
...
Menu item ...
Current output 1
Current output 2
Compensation
Control input
(parameter set or flow
measurement)
Alarm mode
Stratos Pro A411 only:
Relay outputs
Stratos Pro A411 only:
Cleaning
Setting the clock
Tag number


10
Automatic Calibration (Calimatic)
The AUTO calibration mode and the type of temperature detection
are selected during conguration. Make sure that the buer solutions
used correspond to the congured buer set. Other buer solutions,
even those with the same nominal values, may demonstrate a dier-
ent temperature response. This leads to measurement errors.
Display Action Remark
Select Calibration.
Press enter to proceed.
Ready for calibration.
Hourglass blinks.
Select calibration
method: CAL_PH
Press enter to proceed.
Display (3 sec)
Now the device is in
HOLD mode.
Remove the sensor
and temperature
probe, clean them, and
immerse them in the
rst buer solution (in
any order).
Press enter to start.
When manual input
of temperature has
been congured, the
temp value in the
display blinks and
can be edited using
the arrow keys.
Buer recognition.
While the“hourglass”
icon is blinking, the
sensor and temperature
probe remain in the rst
buer solution.
The response time
of the sensor and
temperature probe
is considerably
reduced when the
sensor is rst moved
about in the buer
solution and then
held still.
Buer recognition
terminated, the nomi-
nal buer value is
displayed, then zero
point and temperature.

11
Display Action Remark
Stability check.
The measured value
[mV] is displayed,“CAL2”
and“enter”are blinking.
Calibration with the rst
buer is terminated.
Remove the sensor and
temp probe from the
rst buer solution and
rinse them thoroughly.
Use the arrow keys to
select:
• END (1-point cal)
• CAL2 (2-point cal)
• REPEAT
Press enter to proceed.
Please note:
Stability check can
be stopped after
10 sec (by pressing
enter). However, this
reduces calibration
accuracy. Display for
1-point cal:
Sensoface is active.
End by pressing
enter
2-point calibration:
Immerse sensor and
temperature probe
in the second buer
solution.
Press enter to start.
The calibration
process runs as for
the rst buer.
Retract sensor and temp
probe out of second buf-
fer, rinse o, re-install.
Press enter to proceed.
The slope and asym-
metry potential of
the sensor (based on
25 °C) are displayed.
Use the arrow keys to
select:
• MEAS (end)
• REPEAT
Press enter to proceed.
End: HOLD is deactivat-
ed with delay.
When 2-point cal is
ended:
Automatic Calibration (Calimatic)

12
Product Calibration (pH)
Calibration by sampling (one-point calibration).
During product calibration the sensor remains in the process.
The measurement process is only interrupted briey.
Procedure:
1)The sample is measured in the lab or directly on the site using a por-
table meter.To ensure an exact calibration, the sample temperature
must correspond to the measured process temperature.
During sampling the device saves the currently measured value and
then returns to measuring mode.The“calibration“ mode indicator
blinks.
2)In the second step you enter the measured sample value in the
device. From the dierence between the stored measured value and
entered sample value, the device calculates the new asymmetry
potential.
If the sample is invalid, you can take over the value stored during
sampling. In that case the old calibration values are stored.
Afterwards, you can start a new product calibration.
Display Action Remark
Select product
calibration.
Press enter to proceed.
If an invalid code is
entered, the device
returns to measur-
ing mode.
Ready for calibration.
Hourglass blinks.
Select calibration
method: P_CAL
Press enter to proceed.
Display (3 sec)
Now the device is in
HOLD mode.
Take sample and save
value.
Press enter to proceed.
Now the sample can
be measured in the
lab.

13
Display Action Remark
The device returns to
measuring mode. From the blinking CAL mode indicator
you see that product
calibration has not
been terminated.
Product calibration
step2:
When the sample value
has been determined,
open the product
calibration once more
(P_CAL).
Display (3 sec)
Now the device is in
HOLD mode.
The stored value is
displayed (blinking) and
can be overwritten with
the measured sample
value.
Press enter to proceed.
Display of new asym-
metry potential (based
on 25°C).
Sensoface is active.
To end calibration:
Select MEAS, then
enter
To repeat calibra-
tion: Select REPEAT,
then enter
Calibration is
terminated. After end of calibration, the outputs remain in HOLD mode for a short time.
Product Calibration (pH)

14
Sensoface
(Sensocheck must have been activated during conguration.)
The smiley in the display (Sensoface) alerts to sensor problems
(defective sensor, sensor wear, defective cable, maintenance request).
The permitted calibration ranges and the conditions for a friendly,
neutral, or sad Sensoface are summarized in the following table.
Additional icons refer to the error cause.
Sensocheck
Continuously monitors the sensor and its wiring.
Critical values make the Sensoface“sad”
and the corresponding icon blinks:
The Sensocheck message is also output as error message Err 15 (glass
electrode) or Err16 (reference electrode – with digital transmitters
only for InduCon sensors with SG). The alarm contact is active, the
display backlighting turns red, output current 1 is set to 22 mA (when
congured correspondingly).
Sensocheck can be switched o during conguration (then Sensoface
is also disabled).
Exception:
After a calibration a smiley is always displayed for conrmation.
Please note:
The worsening of a Sensoface criterion leads to the devaluation of the
Sensoface indicator (Smiley becomes“sad”). An improvement of the
Sensoface indicator can only take place after calibration or removal of
the sensor defect.

15
Sensoface
Display Problem Status
Asymmetry
potential and
slope
Asymmetry potential (zero)
and slope of the sensor are
still okay.
The sensor should be replaced
soon.
Asymmetry potential and
slope of the sensor have
reached values which no lon-
ger ensure proper calibration.
Replace sensor.
Calibration
timer Over 80 % of the calibration interval has already past.
The calibration interval has
been exceeded.
Sensor defect Check the sensor and its
connections (see also Error
Messages Err 15 and Err 16).
Response
time Sensor response time has increased.
The sensor should be replaced
soon.
To achieve an improvement,
clean or wet the sensor.
Sensor response time has
signicantly increased ( > 72 s,
calibration aborted after 120 s)
Replace sensor.

16
Sensoface
Display Problem Status
Sensor wear
(for digital
sensors only)
High temperatures and pH
values have caused a wear of
over 80%.
The sensor should be replaced
soon.
Wear is at 100%.
Replace sensor.

17
Error codes
Error Messages
Error
Info text
(is displayed in case of
fault when the Info key is
pressed)
Problem
Possible causes
ERR 99 DEVICE FAILURE Error in factory settings
EEPROM or RAM defective
This error message only occurs
in the case of a total defect. The
device must be repaired and
recalibrated at the factory.
ERR 98 CONFIGURATION ERROR Error in conguration or
calibration data
Memory error in device program
Configuration or calibration data
defective; completely reconfig-
ure and recalibrate the device.
ERR 97 NO MODULE INSTALLED No module
Please have the module installed
in the factory.
ERR 96 WRONG MODULE Wrong module
Please have the module replaced
in the factory.
ERR 95 SYSTEM ERROR System error
Restart required.
If error still persists, send in the
device for repair.
ERR 01 NO SENSOR pH sensor *
Sensor defective
Sensor not connected
Break in sensor cable
ERR 02 WRONG SENSOR Wrong sensor *
ERR 03 CANCELED SENSOR Sensor devaluated *

18
Error
Info text
(is displayed in case of
fault when the Info key is
pressed)
Problem
Possible causes
ERR 04 SENSOR FAILURE Failure in sensor *
ERR 05 CAL DATA Error in cal data *
ERR 10 ORP RANGE ORP display range
violation
< -1999 mV or > 1999 mV
ERR 11 PH RANGE pH display range violation
< -2 or > 16
ERR 12 MV RANGE mV range
ERR 13 TEMPERATURE RANGE Temperature range
violation
ERR 15 SENSOCHECK GLASS-EL Sensocheck glass
ERR 16 SENSOCHECK REF-EL Sensocheck ref.
ERR 60 OUTPUT LOAD Load error
ERR 61 OUTPUT 1 TOO LOW Output current 1
< 3.8 mA
ERR 62 OUTPUT 1 TOO HIGH Output current 1
> 20.5 mA
ERR 63 OUTPUT 2 TOO LOW Output current 2
< 3.8 mA
ERR 64 OUTPUT 2 TOO HIGH Output current 2
> 20.5 mA
ERR 69 TEMP. OUTSIDE TABLE Temperature value outside
table
Error Messages
*) Digital sensors (ISM, InduCon, Memosens)

19
Error
Info text
(is displayed in case of
fault when the Info key is
pressed)
Problem
Possible causes
ERR 72 FLOW TOO LOW Flow too low
ERR 73 FLOW TOO HIGH Flow too high
ERR 100 INVALID SPAN OUT1 Span Out1 configuration error
Selected span too small
ERR 101 INVALID SPAN OUT2 Span Out2 configuration error
Selected span too small
ERR 102 FAILURE BUFFERSET -U1- Conguration error:
Speciable buer set U1
ERR 105 INVALID SPAN I-INPUT I-Input conguration error
Error Messages

20
Quickstart
Betriebsart Messen
Nach Zuschalten der Betriebsspannung geht das Gerät automatisch
in die Betriebsart„Messen“. Aufruf der Betriebsart Messen aus einer
anderen Betriebsart heraus (z.B. Diagnose, Service): Taste meas lang
drücken (> 2 s).
Je nach Konguration können Sie folgende Anzeigen als Standard-
Display für die Betriebsart„Messen“ einstellen (siehe Seite 23):
• Messwert, Uhrzeit sowie Temperatur (Voreinstellung)
• Messwert und Auswahl des Parametersatzes A/B bzw. Durchuss
Messwert und Messstellenbezeichnung („TAG“)
• Uhrzeit und Datum
• Ausgangsströme
• Regler (nur 4-Leiter-Geräte):
obere Anzeige: Stellgröße Y, untere Anzeige: Sollwert (Set Point)
Hinweis: Durch Drücken der Taste meas in der Betriebsart Messen
lassen sich die Displaydarstellungen temporär für ca. 60 s einblenden.
Um das Gerät an die Messaufgabe anzupassen, muss es kongu-
riert werden!
Sensoface-Anzeige
(Sensorzustand)
Uhrzeit
(oder Durchuss)
Betriebsart-Anzeige
(Messen)
Taste meas
lang drücken:
Aufruf Betriebsart
Messen
(erneutes, kurzes
Drücken: Wechsel der
Displaydarstellung)
Anzeige aktiver
Parametersatz
(Kongurierung)
Anzeige ent-
spricht OUT1:
z.B. Messgröße
Anzeige ent-
spricht OUT2:
hier z.B.
Temperatur
Taste enter