Yamatake MGG14C - Figure 4-2 Normal Direction Automatic Double Range

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Range Functions Continued
Normal direction
automatic double
range
This function has two ranges: wide and narrow. When the narrow range mea-
surement exceeds 100%, the unit automatically changes to the wide range.
This function should be used in combination with the wide/narrow range dis-
tinction output contact. Hysteresis is available when range switching. (See
Figure 4-2.)
1 When AUTO is selected for an analog output
Range No.1 4 - 20 mA DC
Range No.2 4 - 20 mA DC
2 When WIDE is selected for an analog output
4 - 20 mA DC is output according to either range No.1 or range No.2,
whichever has the wider span.
When there is a pulse output
The pulse scale is the same for both ranges No.1 and No.2.
Contact output
At shipment, the contact output status of the distinction status signal for
ranges No.1 and No.2 is as follows.
Range No.1: Open
Range No.2: Closed
Reverse setting is also possible.
Figure 4-2 Normal direction automatic double range
Input
Output
(Example)
1 AUTO range
• Range No.1 (narrow range): Outputs 4 - 20 mA for 0 - 10 m
3
/h (a -
b).
• Range No.2 (wide range): Outputs 4 - 20 mA for 0 - 40 m
3
/h (a - d).
2 WIDE range
• Range No.1 (narrow range): Outputs 4 - 8 mA for 0 - 10 m
3
/h (a -
c).
• Range No.2 (wide range): Outputs 8 - 20 mA for 0 - 40 m
3
/h (c - d).
(Continued on next page)