Ametek DR22X0 Series Installation And Operating Instructions Manual page 10

Radar level instrument for two-wire control systems
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DR22
0 Radar Level Instrument
X
Function of keys (with local display)
The DR22X0 instrument can be configured with theocal display unit after opening the
housing, or by the PCprogram PC-CAT.
→ (cursor key)
↑ resp. ↓ (select key)
↵ (ENTER key)
*The cursor position is signalled by flashing of the character at the appropriate place.
Meaning of status markers (only for version with local display)
The 6 markers ? x below the local display only show information about the status of
measurement and are no error displays!
? 1: No current measured value: The device is searching for a new value. If the
search for a plausible level fails for a certain time, "SIGNAL DOWN" appears as
error display.
? 2: Signal too strong: Mean of reflected microwaves is very high. Gain is automatically
stepped down.
? 3: Poor spectrum: Brief showing of this marker has no significance. If permanently
on, this may result in uncertain (incorrect) measured values or the error message
"NO M.VALUE".
? 4: No measured value as yet: Valid measured values not available after the
device has been started up. Measured value automatically set to the level of the
tank bottom. This marker disappears when the first valid measured value is
obtained.
? 5: Tank bottom: In tanks with dished bottom, for example, the measuring signal can
"disappear" if measurements are carried out near the bottom. The measured value
is then automatically set to the level of the tank bottom.
? 6: Measurement frozen: Device is in the block distance detection.
- selects the configuration menu,
- branches the menu to the next lower level,
- shifts the cursor* to the next column on the right.
- branches the menu to the next digit on the same
level,
- changes the content (digit, text character) at the
cursor* position.
- branches the menu to the next higher level,
- stores newly entered parameters,
- executes displayed functions,
- selects special functions (e.g. error memory).
6

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