PD6820 Explosion-Proof Loop-Powered Rate/Totalizer
Instruction Manual
10
Setup and Programming
There is
no need to recalibrate
the meter for
milliamps when first received from the factory.
The meter is
factory calibrated
for milliamps prior
to shipment. The calibration equipment is traceable
to NIST standards.
Overview
Setup and programming is done through the infrared
through-glass SafeTouch buttons or using the
mechanical buttons when uncovered. There are two
slide switches located on the connector board. One is
used to select backlight power and the other is to lock
or unlock the SafeTouch Buttons.
After all connections have been completed and
verified, connect the ribbon cable to the display
module, fasten the display module to the base,
install enclosure cover, and then apply power.
SafeTouch Buttons
The PD6820 is equipped with four sensors that oper-
ate as through-glass buttons so that it can be pro-
grammed and operated without removing the cover
(and exposing the electronics) in a hazardous area.
These buttons can be disabled for security by select-
ing the LOCK setting on the switch located on the
connector board in the base of the enclosure. To ac-
tuate a button, press one finger to the glass directly
over the marked button area. When the cover is re-
moved, the four mechanical buttons located next to
the sensors are used. The sensors are disabled when
a mechanical button is pressed and will automatically
be re-enabled after 60 seconds of inactivity.
The SafeTouch buttons are designed to filter normal
levels of ambient interference and to protect against
false triggering, however, it is recommended that the
SafeTouch buttons be disabled (slide switch to LOCK)
if there is an infrared interference source in line-of-
sight to the display.
SafeTouch Button Tips and
Troubleshooting
The SafeTouch buttons are designed to filter normal
levels of ambient interference and to protect against
false triggering, however, it is recommended that the
SafeTouch buttons be disabled (slide switch to LOCK)
if there is an infrared interference source in line-of-
sight to the display.
SafeTouch Button Tips:
•
To remove cover with power applied (safe area
only), or to clean the window, select
SERVICE
in
the main menu before opening the cover. This
will temporarily disable the SafeTouch buttons for
60 seconds to prevent inadvertent use. Use the
mechanical buttons while the meter is open.
•
To the extent possible, install the display facing
away from sunlight, windows, reflective objects
and any sources of infrared interference.
•
Keep the glass window clean.
•
Tighten the cover securely.
•
Use a password to prevent tampering.
After all connections have been completed and
verified, apply power to the loop.
•
SafeTouch buttons will not work if two or more
buttons are detected as being pressed
simultaneously. As a result, be careful to avoid
triggering multiple buttons or reaching across one
button location to press another.
