Hach ORBISPHERE 3650 Atex, User Manual

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Options Setup
5.4.2 Membrane selection
You may find it necessary to use a different type of membrane for different applications.
Naturally, with any membrane change, you will need to re-calibrate (refer to
Sensor calibration
on page 40 ). You should also consider the changes in required flow rates and response times,
which are specified in the accompanying Sensor Manual .
To re-configure the analyzer, choose Configuration , Membrane to bring up the box which
reveals the membrane models available.
Note: Only those membranes applicable for your instrument model can be selected. All other membranes
are grayed out.
5.4.3 Selecting type of calibration
5.4.3.1 Select from the PC
You can use the Configuration , Calibration mode command to select how the sensor is to be
calibrated.
Note: Only the calibration modes applicable to your sensor can be selected. Others will be grayed out.
Note: Calibration mode can also be selected from the instrument keyboard (see below).
5.4.3.2 Select from the instrument
Choose OK when the desired membrane is selected.
Choose In Air to allow calibration of the sensor in air (only
applicable to Oxygen sensors). Choose In Line to calibrate
the sensor directly in the sampling line, in a sample of known
gas content.
In instrument models that measure gaseous samples, you
may select
In a Span Gas to calibrate. Choose OK when the
desired mode is selected.
1. Switch the instrument power OFF
2. Switch the instrument on by holding down the CAL button
and then pressing the POWER button while still pressing
the CAL button
3. The instrument display will show either
SPA
for span gas
calibration,
LI
for in line calibration, or
Air
for in air
calibration
4. Use the Up/Down Arrow buttons to change the mode to
your choice
5. Press the STO button to set the selected mode. The
instrument displays
Sto
for a few seconds, then returns to
measurement mode