Toledo Transducers MoniTTor N269, Инструкция по установке и эксплуатации

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relieved. This triggering can be either internal or external to the meter. The internal
method is by the use of the THRESHOLD.
The THRESHOLD is the minimum total load which must be generated in channel 0
before the signal is recognized as a load signal. To view the THRESHOLD press the
LOW key three times in a row. The THRESHOLD is displayed in channel 0. This value
can be changed by pressing the "0" number key followed by the new value followed by
the "ENTER" key. The value of the TRHESHOLD when power comes on is 6.3% of
capacity (channel 0). We recommend THRESHOLD values of at least 3% of capacity.
b. THE PROBE INPUT - LOW LOW LOW [0 CLEAR ENTER]
The N269 meter can be triggered externally by the use of a 115VAC signal applied to the
probe input terminals. To trigger this way 115VAC must be switched on at these
terminals just before the load comes on and then removed just after the load comes off.
This 115VAC OFF-ON-OFF signal triggers the meter for acquisition of the peak load.
See installation instructions for wiring information about the probe input.
The N269 is set up to use the THRESHOLD method unless told otherwise. To select
external triggering with the probe, enter a THRESHOLD value of 0. This tells the N269
to use the probe input rather than the THRESHOLD for triggering.
4. THE MAXIMUM CHANNEL NUMBER - LOW LOW LOW [. (0,2) ENTER]
To display the MAXIMUM CHANNEL NUMBER press the key sequence LOW-LOW-LOW.
The MAXIMUM CHANNEL NUMBER appears as a single digit in the left portion of the
channel 0 display. This digit is an indication of the highest numbered channel being processed and
displayed by the N269. Normally this number will correspond to the highest channel number of
the meter. This number will be two if there are two sensor inputs and 0 when there is only one
sensor input. When this number is set to 0 the channel 1 & 2 displays are blank.
If you wish to display only the total load on a meter which has two sensors connected this can be
done. The meter must be calibrated and set up with this MAXIMUM CHANNEL NUMBER set
at 2. This number can then be changed to force the N269 meter to process and display only the
channel 0 load. The channel 1 & 2 displays will be blank and the process control setpoints will
continue to be displayed in channels 3-6.
To change the MAXIMUM CHANNEL NUMBER displayed, press the "." (decimal point) key
while the THRESHOLD is being displayed. The THRESHOLD will disappear from the display
and only the MAXIMUM CHANNEL NUMBER displayed will be shown. Press the 0 key or
the 2 key to change this number, and then press "ENTER" to enter the new value into memory.