Series 72 manual page 12 – COSA Xentaur Hygrocontrol Type 72 User Manual

Page 16

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Series 72 Manual page 12

8.6. Submenu "ANALOG"

This part of the program is used to define the ranges of temperature and

humidity, which correspond to the analog outputs. Furthermore this menu may

adjust offsets in the analog outputs. This is helpful to compensate for any

discrepancies between the series 72 instrument and any other device coupled

to the output.

8.6.1. "RANGE" does not affect the Resolution

If you step into "ANALOG" by hitting "E", the display will show "RANGE", which

is the first submenu of "ANALOG". This menu allows you to define the ranges of

temperature and humidity. By this, the output adjustment for other equipment,

like regulators, printers or recorders, may be done easily.

It is important to mention at this point, that changing a range has no influence

on the resolution of the outputs. So even very narrow ranges (e.g. 10 to 20%

RH or 50 to 60°C) will not change the resolution of the analog or digital outputs,

which is given by 0.1% RH and 0.1°C! This feature is determined by the fully

digital signal processing.

8.6.2. Lower Limit of Humidity Range

If you step into "RANGE" with "E", the display will show "H OUT " . This

symbolizes the lower border of the humidity output and if you want to change it,

you may enter this submenu by pressing "E" again. You will now see the actual

value of this limit with a flashing first decimal. By pressing " " you may change

the value of this digit - with " " you may change over to the next one. If all digits

are set to the new value, you acknowledge with "E" and the program steps to

the next part.

8.6.3. Upper Limit of Humidity Range

Now "H out " is seen in the display. With "E" you enter this part of program

and may now proceed analog to the previous one. If you have the correct value

in the display, the acknowledgement is done by "E".

8.6.4. Behaviour at Sensor Break

Now the display shows "H err " or with an arrow downwards or horizontal. The

arrow symbolizes the reaction of the analog output in the following way:

1)

= output goes to upper limit

2)

= output goes to lower limit

3)

= output remains on last value

Entering this menu by "E", you may change the reaction with " ". If the desired

reaction is in the display, pressing "E" holds it in memory.

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