Menu; Menu Navigation; Passwords; Entering The Menu - Dräger Polytron 8000 Serie Notice D'utilisation

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Calibration

8.6

Menu

8.6.1 Menu navigation

Button Function
Scrolls upwards.
Sets values.
Scrolls downwards.
M
Sets values.
Confirms entry.
OK
Selects menus and functions.

8.6.2 Passwords

Calibration Access to information (Information menu)
PWD and calibration settings (Calibration
menu)
Default: _ _ _ 1
Settings PWD Access to all configurations and menus
Default: _ _ _ 2
To change passwords, see 12.1.

8.6.3 Entering the menu

● To directly enter the Information menu:
a. Tap and hold for 1 second in the measuring mode.
M
● To enter the Calibration menu:
a. Tap and hold for 3 seconds in measuring mode
M
b. Select Enter password
c. Enter Calibration PWD.
● To enter all menus:
a. Tap and hold for 3 seconds in measuring mode
M
b. Select Enter password
c. Enter Settings PWD

8.6.4 Displaying Information

Select the appropriate menu item in the Information menu:
Instrument
Warnings Displays warning messages in plain text
and the corresponding number.
If there are several warning messages
available, there is an indicator (e.g. 1/3 =
Screen 1 of 3).
Faults Displays fault messages in plain text and
the corresponding number
If there are several faults, there is an indica-
tor (e.g. 1/3 = Screen 1 of 3).
Device flag This function displays warning and fault
codes as a table. If all codes are 00 there
are no warning or fault messages available.
18
Modules Displays an overview of the installed hard-
ware modules and the software version of
the EC sensor interface named SIOS. To
access detailed information select the
appropriate module.
= installed modules
= not installed modules
Sensor
The sensor vitality is displayed in %.
1)
Vitality
Changing the sensor is recommended with
a vitality < 25 % by Dräger.
Last cal. The calibration date, unit, gas and concen-
date tration of the last calibration are displayed.
Next cal. Displays the next calibration due date.
date
Sensor The current and the highest sensor tem-
tempera- perature is displayed.
1)
ture
Data logger
Logger Displays the data logger status (active or
status non-active)
Graph Displays the history of the past 15 minutes
on a time/concentration graph.
1) Function only available with diagnostic dongle.
9 Calibration
Obey the safety statements mentioned in 1.3 Mechanical
installation!
A calibration checks and adjusts the measurement accuracy
with a known test gas concentration. First the zero point of the
sensor and then the sensor span is calibrated. Calibrations
have to be performed on a regular basis. The length of
calibration intervals depends on the ambient conditions in
which the sensor is operated.
Ambient conditions and aging cause sensor drifts. Sensor
drifts have a negative impact on the measurement accuracy.
Calibrations restore this accuracy. Depending on the severity
of the drift shorter calibration intervals have to be established.
To evaluate the ambient conditions of a new installations,
shorter calibration intervals with documentation of the drift
should be established. The plant operator should establish
customized calibration intervals with the obtained data.
Under normal conditions, Dräger recommends the following
1)
calibration intervals :
– Electrochemical sensors (EC): 6-12 months
– Catalytic sensors (CAT): 4 months
– Infrared sensors (IR): 6-24 months
1) Observe sensor data sheet and sensor IfU
2) For applications in line with EN45544-1 the calibration interval must
not exceed 6 months.
Instructions for use
2)
2)
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Dräger Polytron 8000 Series