Knick Stratos Pro A2 Oxy Series User manual

T
he Art o
f
Measuring
.
Stratos Pro A2.. Oxy
Oxygen Measurement
Quickstart
Kurzübersicht............... 18
Guide rapide ................ 33
Inicio rápido ................. 48
Início rápido ................. 63
Quickstart Guide............3
Guida rapida................. 78
Latest Product Information: www.knick.de

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
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
Display of calibration data
Display of sensor data
Self test: RAM, ROM, EEPROM, module
Logbook: 100 events with date and time
Display of direct, uncorrected sensor signals
Display of software version, model designation, serial number
Manual activation of HOLD mode, e.g. for sensor replacement.
The signal outputs behave as configured (e.g. last measured value, 21 mA)
Calibration in water/air (as configured)
Zero adjustment
Product calibration
Adjustment of temperature probe
Configuring parameter set B: See previous page
Configuring parameter set B
Display of measured values for validation (simulators)
Current source, output 1
Current source, output 2
Relay test (A4... only)
Controller: man. specication of controller output (A4... only)
Specifying access codes for operating modes
Reset to factory setting
Enabling an option via TAN




(Access via
code, factory
setting:
5555)
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
Calibration
Calibration adapts the device to the individual sensor characteristics.
It is always recommended to calibrate in air.
Compared to water, air is a calibration medium which is easy to
handle, stable, and thus safe. In the most cases, however, the sensor
must be removed for a calibration in air.
When dealing with biotechnological processes which require sterile
conditions, the sensor cannot be removed for calibration.
Here, calibration must be performed with aeration directly in the
process medium (e.g. after sterilization).
In the eld of biotechnology, for example, often saturation is mea-
sured and calibration is performed in the medium for reasons of
sterility.
For other applications where concentration is measured (water control
etc.), calibration in air has proved to be useful.
Note:
• All calibration procedures must be performed by trained person-
nel. Incorrectly set parameters may go unnoticed, but change the
measuring properties.
• If a 2-point calibration is prescribed for trace-oxygen measurement,
the zero calibration should be performed prior to slope calibration.
See main user manual.
Common combination: process variable / calibration mode
Measurement Calibration Application
Saturation Water Biotechnology; sensor cannot be
removed for calibration (sterility)
Concentration Air Waters, open basins
In the following, the calibration procedure for a slope calibration in air
is described. Of course, other combinations of process variable and
calibration mode are possible.

11
Display Action Remark
Select calibration.
Place sensor in air,
press enter to start.
Device goes to HOLD
mode.
“CAL WATER“ or
“CALAIR“ is selected
in the conguration.
Enter relative humidity
using arrow keys
Press enter to proceed.
Default for relative
humidity in air:
rH= 50%
Enter cal pressure using
arrow keys
Press enter to proceed.
Default: 1.000 bar
Unit bar/kpa/PSI
Drift check:
Display of:
Sensor current (nA)
Response time (s)
Temperature (°C/°F)
Press enter to proceed.
The drift check can
take some minutes.
Display of calibration
data (slope and zero).
Press enter to proceed.
Display of selected
process variable (here:
%vol). Now the device is
in HOLD mode: Reinstall
the sensor and check
whether the message
is OK.
MEAS ends calibra-
tion, REPEAT permits
repetition.
After end of calibra-
tion, the outputs
remain in HOLD
mode for a short
time.
Slope Calibration (Medium: Air)

12
(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.
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.
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.
Sensoface

13
Sensoface
Display Problem Status
Zero and
slope Zero and slope of the sensor are still okay.
The sensor should be replaced
soon.
Zero and/or slope of the
sensor have reached values
which no longer ensure prop-
er 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 Err 15,
Error Messages).
Response
time Sensor response time has increased.
The sensor should be replaced
soon.
To achieve an improvement,
clean the sensor.
Sensor response time has sig-
nicantly increased ( > 600 s,
calibration aborted after 720 s)
Replace sensor.

14
Sensoface
Display Problem Status
Sensor wear
(for digital
sensors only)
Wear is over 80%.
The sensor should be replaced
soon.
Wear is at 100%.
Replace sensor.

15
Error Messages
Error
Info text
(is displayed in case of
fault when the Info key is
pressed)
Problem
Possible causes
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.
Error in conguration or
calibration data
Memory error in device program
Configuration or calibration data
defective; completely reconfig-
ure and recalibrate the device.
No module
Please have the module
replaced in the factory.
Wrong module
Please have the module replaced
in the factory.
System error
Restart required.
If error still persists, send in the
device for repair.
O2sensor *
Sensor defective
Sensor not connected
Break in sensor cable
Wrong sensor *
ISM sensor devaluated *

16
Error Messages
Error
Info text
(is displayed in case of
fault when the Info key is
pressed)
Problem
Possible causes
Failure in sensor *
Error in cal data *
Display range violation
SAT saturation
CONC concentraton or
GAS volume concentration
Measuring range of
sensor exceeded
Temperature range
violation
Sensocheck
Load error
Output current 1
< 3.8 mA
Output current 1
> 20.5 mA
Output current 2
< 3.8 mA
Output current 2
> 20.5 mA
* Memosens or ISM sensors

17
Error Messages
Error Info text (is displayed in case of fault
when the Info key is pressed)
Problem
Possible causes
Flow too low
Flow too high
I-Input configuration error

18
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 21):
• 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

19
Tastatur
Taste Funktion
meas • Im Menü eine Ebene zurück
• Direkt in den Messmodus (> 2 s drücken)
• Messmodus: andere Displaydarstellung
info • Informationen abrufen
• Fehlermeldungen anzeigen
enter • Kongurierung: Eingaben bestätigen,
nächster Kongurierschritt
• Kalibrierung:
weiter im Programmablauf
menu • Messmodus: Menü aufrufen
Pfeiltasten
auf / ab • Menü: Ziernwert erhöhen / verringern • Menü: Auswahl
Pfeiltasten
links / rechts • Menü: vorherige/nächste Menügruppe • Zahleneingabe: Stelle nach links/rechts
Sensorüberwachung Sensocheck, Sensoface
Sensocheck überwacht kontinuierlich den Sensor und die
Zuleitungen. Sensocheck ist parametrierbar (Werkseinstellung: Aus).
Sensoface gibt Hinweise über den Zustand des Sensors.
Die drei Sensoface-Piktogramme geben Diagnose-Hinweise
auf Wartungsbedarf des Sensors.
Bei traurigem Sensoface wird das Display„lila“.
Mit der Taste info kann ein Hinweis abgerufen werden

20
Display
MEMO SENS
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12
13
14
15
16
23
24
Signalfarben (Displayhinterleuchtung)
rot
rot blinkend Alarm (im Fehlerfall: blinkende Anzeigewerte) Fehleingabe: unzulässiger Wert bzw. falsche Passzahl
orange HOLD-Zustand (Kalibrierung, Kongurierung, Service)
türkis Diagnose
grün Info
lila Sensoface-Meldung
1 Temperatur
2 Sensocheck
3 Intervall/Einstellzeit
4 Sensordaten
5 Sensocheck
6 Meldung Grenzwert:
Limit 1 bzw. Limit 2
7 Alarm
8 Service
9 Parametersatz
10 Kalibrierung
11 digitaler Sensor
12 Wartezeit läuft
13 Info verfügbar
14 HOLD-Zustand aktiv
15 Hauptanzeige
16 Nebenanzeige
17 weiter mit enter
18 nicht verwendet
19 Diagnose
20 Konguriermodus
21 Kalibriermodus
22 Messmodus
23 Sensoface
24 Messwertzeichen