Precision Digital PD8-765 - Manual (Page 25)

PD8 Series Explosion-Proof Instrument Supplemental Manual
25
OPERATION
Overview
The following instructions detail the operation of features specific to the ProtEX-MAX.
For information on using the features of the integrated meter or controller, including
instrument programming, configuration, input, output, or display features, see the
P
RO V U , Trident X2, or Vigilante II instruction manual.
Setup and programming may be done through the infrared through-glass SafeTouch
buttons, or using the mechanical buttons when uncovered. There is a slide switch
located on the connector board. This is used to enable or disable SafeTouch Buttons.
SafeTouch
®
Buttons
The ProtEX-MAX is equipped with four sensors that operate as through-glass buttons
so that it can be programmed and operated without removing the cover (and
exposing the electronics) in a hazardous area.
These buttons can be disabled for security by selecting DISABLE on the switch
labeled NO-CONTACT BUTTONS located on the connector board.
To actuate a button, press one finger to the glass directly over the marked button
area. Then retract finger more than three inches from the glass before pressing the
next button. When the cover is removed, 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.
The SafeTouch Buttons are configured by default to duplicate the function of the front
panel mechanical pushbuttons associated with the integrated meter. The symbols by
each SafeTouch button correspond to a mechanical button. Operation of the
instrument is performed as described in the
P RO V U , Trident X2, or Vigilante II
instruction manual included with the ProtEX-MAX.
SafeTouch Button Tips:

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.
WARNING
Take caution when cleaning the window glass as it may result in
unintentional SafeTouch button events. Only clean the
ProtEX-MAX when the system is safely shut down, and inspect
the ProtEX-MAX for proper configuration prior to system restart.