Precision Digital PD6080 - Manual (Page 93)

PD6080/PD6081 Super Snooper Modbus Scanner Instruction Manual
93
Reset Menu (reset)
The Reset menu is used to reset the maximum or minimum reading (peak or valley) reached by the
process; both may be reset at the same time by selecting “reset high & low” (rst HL). This is applied to
all PVs and math channels.
Resetting is possible by going into the USER menu, selecting a function key or digital input, pressing
ENTER to take you to the next level, then pressing the Up arrow until you arrive at the RESET menu.
Press ENTER to assign the RESET menu to the selected function key or digital input. Now, when the
scanner is in Run Mode, pressing the selected function key will take you to the RESET menu, where you
can scroll through Reset Hi (Max), Reset Lo (Min), and Reset HiLo (Reset Max and Min), choosing what
value to reset. You can also select the specific reset function (e.g. Reset HiLo) to the selected digital input
or function key.
4-20 mA Output Calibration
The 4-20 mA output can be
recalibrated in the field. A calibrated
digital meter with an input range of at
least 25 mA and a resolution of 1
μA is
recommended.
4-20 mA Output Calibration Procedure
1. Wire the PD6080/6081 4-20 mA output to a current loop that includes a power supply (internal or
external 12 to 24 VDC), and the mA input on the digital meter. See page 23 for details.
2. Turn on all devices. Allow for a 15 to 30 minute warm-up.
3. Go to the Advanced Features menu, and navigate to the Analog Output Programming
(AoutPr)/Calibration (Calib) menu and press Enter..
4. The display will show 4 nmA. The PD6080/6081 mA output should now be close to 4 mA. Press
Enter and the display will show 04.000. Enter the actual value read by the digital mA meter and
press Enter.
5. The display will show 20 nmA. The PD6080/6081 mA output should now be close to 20 mA. Press
Enter and the display will show 20.000. Enter the actual value read by the digital mA meter and
press Enter.
6. The PD6080/6081 will now calculate the calibration factors and store them.
7. Press Menu to exit and return to Run mode.
!
CAUTION!
If an uncalibrated meter or a meter with less resolution is used, the calibration of the
4-20 mA output could be adversely affected.
• There is no need to recalibrate the 4-20 mA output
when first received from the factory.
• The 4-20 mA outputs is factory calibrated prior to
shipment. The calibration equipment is certified to NIST
standards.