LumaSense Technologies INNOVA 1303 - Manual (Page 33)

Chapter 3
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BE1085-14
1303 Multipoint Sampler and Doser LumaSense Technologies A/S
Page 33 of 60
1303’s temperature to stabilize in relation to the temperature of
the area in which it will be used.
The main dosing valve and each dosing valve must be opened to
allow tracer-gas to flow into the 1303’s dosing manifold, for 5
minutes before calibrating. This ensures that the temperature of
the dosing system will stabilise relative to the temperature of the
tracer-gas. The procedures for opening the main dosing valve and
the dosing valves, to allow flow of tracer-gas through the dosing
system, are described in section 3.6.2 and 3.6.3 respectively. To
ensure that the tracer-gas does not flow into the room in which you
will be performing measurements, direct the outlets of the doser
tubing to a suitable exhaust – for example, out of a window. After
flushing is complete, wait for 15 minutes before proceeding with
the calibration.
2. If you are to use a different tracer-gas from the one used previ-
ously, you must first flush the doser system with the new tracer-
gas, before calibrating with the new tracer-gas. Flushing is done as
described above. Once flushing is completed, remember to change
the characteristic gas-constant value stored in the 1303 to that for
the new tracer-gas before performing the calibration. This proce-
dure is described in section 3.3.2 .
Examples:
CALIBRATE_NOZZLE 1<LF> Starts the 1303’s self-calibrating
procedure for dosing nozzle number
1. Each nozzle calibration takes ap-
proximately 5 minutes. If no dosing
nozzle number is given, the 1303
will calibrate all the dosing nozzles.
Each of the dosing nozzles that you wish to use must be calibrated in
this way. Once the procedure is complete, the new calibration data for
each nozzle can be read-out using the following job:
CALIBRATION_DATA? 1<LF> Outputs the calibration data for dos-
ing nozzle number 1. If no nozzle
number is given, the calibration da-
ta for all 6 nozzles is output.
Note: the 1303 does not maintain the calibration data in its memory
after switching-off. It is recommended that you read-out and note
down the current calibration data for each nozzle, for future reference
in the event of loss of calibration data from the 1303. The calibration
data can then be re-installed using the Calibration_Data job, section
3.3.3 .