Precision Digital

PD663 ProtEX-Lite Explosion-Proof Loop-Powered Meter

Economical loop-powered meter, approved for hazardous areas, optional backlight feature

Starting At
$622.00 CAD
Normally ships in 1-2 Weeks

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The ProtEX-Lite PD663 is Precision Digital's most economical and compact explosion-proof, loop-powered indicator. The fact that this meter is loop-powered means that there is no need to run additional, costly power lines into a hazardous area. Like all ProtEX products, the PD663 carries FM, CSA, ATEX, and IECEx approvals for use in hazardous areas. It features a single line, four digit, display that can be easily scaled in the field for any 4-20 mA input. The PD663 is built with great looking, modern, die-cast aluminum IP68, NEMA 4X rated enclosure which includes flanges for wall or pipe mounting. This meter is available with an optional backlight feature.


• 4-20 mA Input
• Modern, Sleek and Practical Enclosure
• 3½+ Digits, 0.6" (15.24 mm) Display
• Display Mountable at 0°, 90°, 180°, & 270°
• Easy Four-Button Programming
• Programmable Noise Filter
• Max/Min Display
• Loop-Powered Backlight Option
• 1.7 V Drop (4.7 V with Backlight)
• Explosion-Proof, IP68, NEMA 4X Enclosure
• Flanges for Wall or Pipe Mounting
• HART Protocol Transparent
• Operates from -40 to 75°C

Display 0.6" (15.24 mm) LCD, 3+ digits; -1999 to 2999
Display Update Rate 2 Updates/Second
Display Orientation Display may be mounted at 90 increments up to 270 from default orientation.
Over Range Display Flashes 2999
Under Range Display Flashes -1999
Programming Method 4 Front Panel Pushbuttons (behind glass). Magnet may also be used for programming; P/N PDA-MAG.
Noise Filter Programmable HI, LOW, or OFF
Recalibration Recalibration is recommended at least every 12 months.
Max/Min Display Max/Min readings reached by the process are stored until reset by the user or until power to the meter is turned off.
Non-Volatile Memory All programmed settings are stored in non-volatile memory for a minimum of ten years if power is lost.
Normal Mode Rejection 64 dB at 50/60 Hz
Operating Temperature -40 to 75C
Storage Temperature -40 to 75C
Relative Humidity 0 to 90% non-condensing
Connections Removable screw terminals accept 12 to 22 AWG
Tightening Torque Screw terminal connectors: 4.5 lb-in (0.5 Nm)
Enclosure Explosion-proof cast aluminum with glass window, 0.30% max copper content, corrosion resistant powder coating, color: blue. NEMA 4X, IP68. Two " NPT threaded conduit openings. One " NPT nickel plated brass conduit plug with 10 mm hex key fitting installed.
Mounting May be mounted directly to conduit. Two mounting holes for 1.5" pipe or wall mounting.
Weight 40 oz (1.13 kg)
Overall Dimensions (W x H x D) 4.30" x 4.27" x 3.62" (109 mm x 108 mm x 92 mm)
Warranty 3 years parts & labor

PDA0003 Adaptor for the PD663
1/2" M-NPT to 3/4" F-NPT Approved Adaptor for the PD663
Normally ships in 1-2 Weeks
$37.50 CAD
PDA6631 Mounting Kit
Mounting kit for ProtEX PD663
Normally ships in 1-2 Weeks
Starting At
$15.00 CAD
PDA6863 Pipe Mounting Kit
2" pipe mounting kit for ProtEX PD663
Normally ships in 1-2 Weeks
Starting At
$75.00 CAD
PDA6631 Mounting Kit
Mounting kit for ProtEX PD663
Normally ships in 1-2 Weeks
Starting At
$15.00 CAD
PDAPLUG50 Stopping Plug
1/2" NPT 316 stainless steel stopping plug with approvals
Normally ships in 1-2 Weeks
$30.00 CAD