ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
54
Meter
Operation
The meter is capable of accepting current (0-20 mA, 4-20 mA) and voltage signals (0-5 V, 1-5 V, 0-10 V,
10 V) and displaying these signals in engineering units from -9
FT
11
IN
(
15
/
16
or
7
/
8
) - 99
FT
11
IN
(
15
/
16
or
7
/
8
) on
display line 1 and units from -99999 to 999999 on display line 2 (
e.g.
a 4-20 mA signal could be displayed
as 0
FT
0
IN 0
/
16
to 25
FT
0
IN 0
/
16
on display line 1 and -50.000 to 50.000 on display line 2).
The dual-line display can be customized by the user to operate in such a way as to satisfy a specific
application. Typically, the main display is used for the process variable; while the second display is used
for engineering units, custom legend, or set point indication.
The analog input can be scaled to display the process in two different scales; for example: with
d-SCAL
enabled, the main display could indicate level in feet and inches and the second display could indicate the
volume in gallons.
Additionally, the meter can be set up to display the analog input in feet and inches on the main display and
the Modbus input on the second display. The relays and analog output can be programmed to operate from
the Modbus PV input.
Front Panel Buttons Operation
Button Symbol Description
Press to enter or exit Programming Mode, view settings, or exit max/min readings
Press to reset max/min readings or other parameter/function assigned through the
User
menu
Press to display max/min readings or other parameter/function assigned through
the
User
menu
Press to acknowledge relays or other parameters/function assigned through the
User
menu
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 as shown in the above table.
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.
