
PD6870 Explosion-Proof Loop-Powered Process Meter
Instruction Manual
2
Disclaimer
The information contained in this document
is subject to change without notice. Precision
Digital Corporation makes no representations
or warranties with respect to the contents hereof;
and specifically disclaims any implied warranties
of merchantability or fitness for a particular
purpose.
•Read complete instructions prior to installation
and operation of the meter.
•Risk of electric shock or personal injury.
•This product is not recommended for life support
applications or applications where malfunctioning
could result in personal injury or property loss.
Anyone using this product for such applications
does so at his/her own risk. Precision Digital
Corporation shall not be held liable for damages
resulting from such improper use.
•Failure to follow installation guidelines could
result in death or serious injury. Make sure only
qualified personnel perform the installation.
•Never remove the meter cover in explosive
environments when the circuit is alive.
•Cover must be fully engaged to meet
flameproof/explosion-proof requirements.
WARNING
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Limited Warranty
Precision Digital Corporation warrants this
product against defects in material or
workmanship for the specified period under
“Specifications” from the date of shipment from
the factory. Precision Digital’s liability under this
limited warranty shall not exceed the purchase
value, repair, or replacement of the defective unit.
See Warranty Information and Terms &
Conditions on www.predig.com for complete
details.
© 2021 Precision Digital Corporation.
All rights reserved.
Introduction
The ProtEX-FarVu PD6870 is a rugged, explosion-
proof, loop-powered meter with 1" display digits ideal
for demanding applications in hazardous areas or in
the harshest environmental conditions. The meter
derives all of its power from the 4-20 mA loop with a
small 1 volt drop for easy installation in almost any
system.
The meter is programmed using four easy to access
front-mounted potentiometers with no complex or diffi-
cult to read programming menus necessary for setup.
The numeric display will read from -1000 to 1999 over
a 2000 count user adjustable scaling span. The back-
light option lets you see the display under any lighting
condition and is powered from the 4-20 mA loop with
no additional power supply required.
The enclosure is provided with two threaded conduit
holes and integrated pipe or wall mounting slotted
flanges.
Ordering Information
Model Description
PD6870-0L0 Explosion-Proof Loop-Powered
Process Meter
PD6870-0K0 Explosion-Proof Loop-Powered
Process Meter with Backlight
Accessories
Model Description
PDAPLUG75 3/4" Metal Conduit/Stopping Plug
PDA0001 3/4" M-NPT to F-M20 Reducer
PDA0002 3/4" M-NPT to 1/2" F-NPT Reducer
PDA1024-01 24 VDC Power Supply for DIN Rail
PDA6846
Steel 2" U-Bolt Kit. All Material: Zinc
Plated Steel; (1) U-Bolt for 2" Pipe with
(2 each) Washers, Lock Washers, and
Nuts.
PDA6846-SS
Stainless Steel 2" U-Bolt Kit. All
Material: Stainless Steel; (1) U-Bolt for
2" Pipe with (2 each) Washers, Lock
Washers, and Nuts.
PDA-SSTAG Custom Stainless Steel Tag (see
website for convenient ordering form)