Operating Manual - SERANA–Q Serial Analogous Indicators
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4.5 Trend indication (optional)
The trend indication consists of two green triangle LEDs to the left and to the right of the
readout text and it is optionally available for all indication units. For dials with white
background, no trend indication is available.
When the received value changes, the pointer moves and the yellow arrows of the trend
indication signal the direction of change.
4.6 Redundancy
The device is capable for reading a second NMEA message, for example from a second
sensor.
When the primary input falls out, the value from the secondary input is indicated.
When the primary input receives valid data again, these data will be indicated.
The status LED remains green as long as one of the two inputs receives valid data which
are in accordance to the scale.
When no valid data are received from both inputs, it will be indicated by a yellow status LED
and the pointer will be positioned on the zero position (calibration position outside of the
scale).
4.7 Dimming
Depending on the features, the brightness is adjusted by a dimmer next to the device (with
swivel frame housing) or by a dimmer on-board of the console.
The brightness is adjusted continuously.
SERANA-Q is compatible to the analogous dimmers of Weigel Meßgeräte quoted in the
certificates (Wheelmark) as well as to the DIM panel cDEV-DIM of Microlab GmbH and to all
other DIM masters with NMEA DDC protocol.
Order number
WEIGEL dimmer
220.01.001
Dimmer in integration housing, illuminated, red colour
220.01.002
Dimmer in integration housing, illuminated, yellow colour
220.01.003
Dimmer in integration housing, illuminated, white colour
220.02.001
Dimmer for panel mounting
4.8 Calibration
For Wheelmark devices, no calibration is required.
Only calibrated NMEA protocols must be received.
4.9 Self test
During power-on, the device executes a self test. During this, all LEDs flash and the pointer
is moved from minimum to maximum.
When this self test does not run properly, the device is faulty.
Pay attention that the pointer is positioned on the zero position when powered off.
If this it not the case, correct it using the zero adjustment.
