NEWPORT iDRA Controller - Manual (Page 27)

23
Reading Configuration (If Process was selected)
INPUT/READING (SCALE AND OFFSET) SUBMENU:
Input Voltage or Current can be converted or scaled into values appropriate for
the process or signal being measured. So, a reading may be displayed, for
example, in units of weight or velocity instead of in amperes or volts.
The instrument determines Scale and Offset values based on two user-provided
input values entered with the corresponding readings. Note that “In1” Input 1 and
“In2” Input 2 are represented and entered as a product of the input
voltage/current and the conversion number from the Table 3.1.
The following instructions include details for a specific scenario in which a
4-20 mA input (in the 20 mA Process Mode) is to be represented as a
measurement of 0-100 percent.
Press d 14) Press d at the IN.RD prompt. Display shows IN1 Input 1
Submenu.
Press d 15) Display shows Input 1 value with 1 st digit flashing.
Press b & c 16) Use b and c buttons to enter IN1 value.
The IN1 value = min. input value * conversion number.
Disregard the position of the decimal point (2000 counts may
actually appear as “2000”, “200.0”, “20.00”, or “2.000”).
Example: 4 mA as 4(mA) x 500 = 2000.
Press d 17) Display advances to RD1 Reading 1 Submenu.
Press b & c 18) Use b and c buttons to enter RD1 value.
This value represents IN1 in terms of some meaningful
engineering units. To show the 4 mA as zero percent enter RD1
value = 0000.
Example:
RD1 value = 0000.
Press d 19) Display IN2 Input 2 Submenu.
Press d 20) Display shows Input 2 value with 1
st
digit flashing.
The IN2 value = max. input value * conversion number.
Example: 20(mA) x 500 = 10000 (9999).
Press b & c 21) Use b and c buttons to enter IN2 value.
Press d 22) Display advances to RD2 Reading 2 Submenu.
Press b & c 23) Use b and c buttons to enter RD2 value.
Example: RD2 value = 0100.
Press d 24) Display flashes STRD stored message momentarily and
then advances to ALR1 only, if change was made, otherwise
press d to advance to ALR1 Alarm 1 Menu.