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20 mA calibration
Press "20"
Press "20" again
Calibration bypasses the measurement response rate.
Note:
Operation Status
The graphic portion of the display gives the user a visual
indication of The Probe's operating status. Viewing the
graphic can assist the user in properly locating and
installing The Probe to achieve optimum performance.
The logo will change from full to partial to indicate operation status. After the `Waiting' period, the `?'
icon will appear for an `LOE / FAULT' indication. When a valid echo is again received, a `Good'
indication will resume. Refer to Troubleshooting on page 12.
Adjustments
There are several operating adjustments that can be made to The Probe.
To access the operating adjustments, simultaneously press the "4" and "20" keys until the desired
adjustment is obtained. A viewing sequence of the stored value is automatically initiated. During this
time the value can be changed by pressing either the "4" or "20" key. After viewing or changing,
operation automatically reverts to the Run mode (6 sec).
Calibration, Scrolling Method
The 4 and 20 mA calibration values can be selected where reference levels, either from the material
in the vessel or from a target, cannot be provided. This method can also be used to trim the output
levels obtained by the Reference Method (see page 7).
To change the stored calibration value, obtain the `c 4' or `c 20' display. The calibration value may be
increased by pressing the "20" key or decreased by pressing the "4" key. When the display has
scrolled to the desired value, stop pressing the key. The display automatically reverts to the Run
mode (6 sec).
Page 8
20 mA calibration
new 20 mA calibration
4 mA calibration, scrolling
20 mA calibration, scrolling
blanking
speed of response
The Probe – INSTRUCTION MANUAL
calibration invalid if
retry
GOOD
WAITING
fail-safe
fail-safe timer
units
7ML19985GC62
LOE / FAULT
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