Loop Powered Meters Single Line

Loop Powered Meters
Precision Digital manufactures a full line of convenient, loop-powered meters which are easy to install and maintain because they get their power directly from the 4-20 mA current loop. Many of these meters feature a 1 V drop to the current loop and are certified as Intrinsically Safe, Nonincendive, and explosion-proof, for use in hazardous areas. These meters have features that help them to stand out from the competition, such as segmented bar graph representations of the process input, feet & inches level displays, wide operating temperature ranges, and displays that can be easily read in various lighting conditions, from wide angles, and from considerable distances.

Loop Powered Meters Single Line

  • The PD663 is a loop-powered field meter that is CSA Certified as Explosion-Proof, Dust-Ignition-Proof, and Flame-Proof, and ATEX & IECEx Certified as Explosion-Proof. It is available in either an aluminum or stainless steel enclosure with ¾" or M20 connections. The PD663 is easy to install and program and it can be seen in a variety of lighting conditions, even in bright sunlight. It will operate down to -40°C and is approved for installation in areas where the temperature gets as cold as -55°C, however the display will cease functioning.


  • The PD685 is an easy to use, loop-powered indicator, certified by CSA, ATEX and IECEx as intrinsically safe. The PD685 carries international certifications under both the Class/Division System and Zone System, and is thereby suitable for use in gas and dust hazardous areas worldwide. For Division 2 applications where intrinsically safe interfaces are not needed, the PD685 is able to be installed without barriers! To achieve this ability, the PD685 underwent a special 'nonarcing assessment' under the UL 121201 and CSA C22.2 No. 213 standards, and was determined to be a device incapable of causing an ignition on its own. The PD685 is wellsuited for both indoor and outdoor applications and carries a variety of environmental ratings, including NEMA 4, Type 4X and IP67.

    The PD685 can be seen from considerable distance in bright sunlight or dimly lit areas when the standard backlight feature is activated. The fact that this meter is loop-powered means that there is no need to run additional, costly power lines into a hazardous area. The meter gets all of the power it needs from the 4-20 mA loop and its 1 V (4 V with backlight) drop results in a minimal burden on the loop. The meter features a wide -40 to 75°C operating temperature range and is available with a ½" conduit hole in a location of your choice for easy installation. Calibration is a quick two-step process involving the adjustment of only two sets of coarse and fine, non-interacting potentiometers.


    Why you should buy:
  • 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 product is CSA Certified as Explosion-Proof, Dust-Ignition-Proof, and Flame-Proof, and ATEX & IECEx Certified as Explosion-Proof. It is available in either an aluminum or stainless steel enclosure with ¾" or M20 connections. It will operate down to -40°C and is approved for installation in areas where the temperature gets as cold as -55°C, however, the display will cease functioning.

    Why you should buy:
  • The Vantageview PD6770 is a plastic, loop-powered process meter with 1" display digits in a field-mountable enclosure designed for demanding applications. The meter derives all of its power from the 4-20 mA loop with a small 1 V drop, so there is no need to run additional, costly power lines. The PD6770 is built in a NEMA 4X and IP65 rated plastic enclosure which can stand up to even the harshest environmental conditions. It is programmed using four easy-to-access, front-mounted control dials.




    Why you should buy:
    • NEMA 4X/IP65 Enclosure
    • Loop-Powered
    • Large Digits
    • Backlight Option
  • The PD662 NEMA 4X, CSA Certified loop-powered meter is perfect
    for applications where a simple, inexpensive display is required
    and AC power is not available. The PD662 derives all its power
    from the 4-20 mA loop, including its optional backlight feature. It
    can be easily scaled in the field using four push buttons; with or
    without applying an actual calibration signal. The PD662’s display
    will read up to 2999; we call this 3½+ digits! The PD662 is housed
    in a rugged NEMA 4X enclosure and is provided with one ½" NPT
    pipe conduit hole.


    Why you should buy: