Set Measured Value To Zero; Sensor Adjustment For Dynamic Pressure Probes; Sensor Adjustment For Chemical Sensors And Probes - Ahlborn ALMEMO 2590-2A Operating Instructions Manual

Universal measuring instruments and data loggers

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Table Of Contents

Table of Contents

11. Measuring menus

11.2.1

One very useful function is to zero the measured

value at certain locations or at certain times as a

reference value in order then to observe only the

subsequent deviations. Having selected the

measured value function the softkey

appear. Press this key to save the measured

value displayed as base value (see 13.6) and re-

set to zero.

Select measured value function (see 9.4) :

To select the zero-set measured value function press

The measured value will then show :

The base value is then assigned the measured value :

To cancel zero-set, then after pressing :

If the function is locked (see 13.4) the base value is not saved on the



connector but only temporarily to RAM where it is retained until the

device is next switched off. This status is indicated in the display by

the symbol

If you prefer to disable the zero-set function completely, the channel

in question must be locked at level 6.

11.2.2

Dynamic pressure probes FDA602Sx must un-

dergo zero-point adjustment before each measur-

ing operation by withdrawing the hoses. The zero-

point error is always written to the calibration off-

set temporarily, i.e. until the device is next

switched off, irrespective of locking level - thus en-

suring that linearization is not falsified.

To select the measured value function press key(s) :

To perform zero-point adjustment press key(s) :

11.2.3

probes

The following chemical sensors need to be ad-

justed at least once or at regular intervals to com-

pensate for various instabilities. In the measured

value function pressing key

automatically perform a two-point adjustment of

the zero-point and the gain. As and when adjust-

ment is performed the appropriate calibration set-

points appear; these can also be modified as re-

quired: