Siemens 7MB2335, Operating Instructions Manual, Page: 95 / 168

Operation
5-45
Operating instructions ULTRAMAT 23 gas analyzer
C79000-B5276-C216-03
5.10.3.1 Configuration: Tests: Display/Keys/Flow
You can select the following three tests in this menu:
S
Test of display
All characters in the character set of this analyzer are output in
succession at every position of the display. The display remains
empty if characters are output which cannot be displayed. This is a
cyclic test, i.e. once the complete character set has been
processed, the test is repeated until terminated by pressing the
ESC
key (a message on the display will remind you of this before the test
is started).
S
Test of keys
This test takes 30 s, and the time remaining up to the end of the test
is output on the display. You can press all input keys in succession
during this test; the analyzer recognizes that a key has been
pressed and indicates this. This test cannot be cancelled before the
30 s have expired.
S
Test of flow switch
This indicates whether the flow is correct or not. The flow can be
switched on and off by pressing the
PUMP key.
5.10.3.2 Configuration: Tests: Inputs/Outputs
The electric inputs and outputs of the analyzer are tested here. You
require the following equipment to carry out these tests:
S
Ammeter,
S
Ohmmeter,
S
Power supply and/or
S
Test plugs.
Test of display
Test of keys
Test of flow switch
51031
Test analog outputs
Test of relays
Test ext. sol. valve
Test of inputs
51032