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Loop-Leader Series

Precision Digital embraces the motto "Simplified information where and how you want it." Its product lineup includes line- and loop-powered indicators, rate/totalizers, scanners, annunciators, temperature indicators and controllers, Modbus® meters, large display indicators, multi-channel controllers, and industrial wireless products. These instruments are mainly utilized in flow, level, pressure, and temperature applications and are designed for panel, field, and surface mounting.
 
Customers appreciate Precision Digital's expertise in display and control, especially in creating products that perform reliably in challenging environments, including hazardous areas and harsh outdoor conditions, supported by appropriate approvals.
 
Most of Precision Digital's offerings have received approvals and certifications to meet UL, CSA, FM, ATEX, IECEx, CE, and NEMA standards. The company is committed to its employees, customers, and technologies, and has achieved ISO 9001:2015 certification for its quality management system.
With 45 years of experience in the process market, Precision Digital continuously leverages its knowledge to design and manufacture outstanding products. 
 
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Precision Digital's Premier Meters and Indicators
 


PD6600 Loop Leader Loop-Powered Process Meter

The Loop Leader PD6600 is a versatile, loop-powered, 1/8 DIN process meter designed for general use. It features a dual-line display with five digits on the top line and eight digits on the bottom line, offering preprogrammed engineering units. The meter includes a loop-powered backlight, with a unique red option for alarm conditions, and optional displays for bar graphs (PD6604) or feet and inches (PD6603) for enhanced visibility.
 
All models come with two open collector outputs and can be equipped with two solid-state relays and a 4-20 mA analog output. These outputs can be programmed for various functions, such as alarm indications, signal retransmission (both pulse and analog), and pump control, among other features. Being loop-powered eliminates the need for additional, expensive power lines, as the meter draws all necessary power from the 4-20 mA loop.
 
The Loop Leader process meter is housed in a shallow-depth case with an IP65 rating, ensuring durability in various environments. It boasts loop-powered backlighting and operates in a wide temperature range of -40 to 167°F (-40 to 75°C). Whether it's used indoors or outdoors, in bright sunlight or dim lighting, or in challenging conditions (wet, dirty, hot, or cold), the Loop Leader is designed to perform reliably in almost any setting.
 

 

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PD6600 Loop Leader Loop-Powered Intrinsically Safe & Nonincendive Process Meter

The Loop Leader PD6600 is a 1/8 DIN process meter that is ATEX, IECEx approved, and UL listed for intrinsic safety and non-incendive applications. It features a dual-line display, with five digits on the top and eight on the bottom, preprogrammed engineering units, and a loop-powered backlight that includes a distinctive red option for alarm situations. Optional display configurations include a bargraph (PD6608) and a feet & inches format (PD6607), ensuring a clear and user-friendly interface.
Each model is equipped with two open collector outputs, and options for two solid-state relays and a 4-20 mA analog output. These outputs can be programmed for various functions such as alarm alerts, signal retransmission (either pulse or analog), and pump control.
 
Being loop-powered means there’s no need for additional power lines, as the meter derives all its power from the 4-20 mA loop, reducing costs. The Loop Leader is housed in a shallow-depth case with an IP65 rated front, allowing it to operate in a wide temperature range of -40 to 158°F (-40 to 70°C). This makes it suitable for use in hazardous locations, indoors or outdoors, in bright sunlight or dim environments, and in conditions that are wet, dirty, hot, or cold. The Loop Leader is designed to perform reliably in virtually any setting.
 

 

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PD6620 Loop Leader Loop-Powered Rate/Totalizer

The Loop Leader PD6620 is a 1/8 DIN flow rate/totalizer that is loop-powered and specifically designed for challenging process control applications. It boasts a dual-line display, featuring five digits on the top and eight on the bottom, with preprogrammed engineering units. The display includes a loop-powered backlight and a distinctive red backlight option for alarm conditions, along with an optional bargraph display (PD6624) for enhanced visibility.
 
All models come standard with two open collector outputs, and there are options for two solid-state relays and a 4-20 mA analog output. These outputs can be programmed for various functions, including alarm notifications, signal retransmission (both pulse and analog), and pump control.
As a loop-powered device, the PD6620 eliminates the need for additional, costly power lines, drawing all its power from the 4-20 mA loop. It is housed in a shallow-depth case with an IP65 rated front, designed to operate in a broad temperature range of -40 to 167°F (-40 to 75°C). Whether used indoors or outdoors, in bright sunlight or dimly lit environments, and in conditions that are wet, dirty, hot, or cold, the Loop Leader is built to perform reliably in nearly any setting.
 

 

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PD6620 Loop Leader Loop-Powered Intrinsically Safe & Nonincendive Rate/Totalizer

The Loop Leader PD6620 is an intrinsically safe and non-incendive flow rate/totalizer that is ATEX and IECEx approved, as well as UL listed, making it ideal for demanding process control applications. It features a dual-line display with five digits on the top line and eight on the bottom, preprogrammed engineering units, and a loop-powered backlight. There’s also a unique red backlight option for alarm conditions and an optional bargraph display (PD6628) for enhanced visibility.
 
Each model includes two open collector outputs, with options for two solid-state relays and a 4-20 mA analog output. These outputs can be programmed for various functionalities, such as alarm indication, signal retransmission (via pulse or analog), and pump control.
 
Being loop-powered means there’s no need for additional, costly power lines, as the meter draws all its power from the 4-20 mA loop. It is housed in a shallow-depth case with an IP65 rated front, designed to operate in a wide temperature range of -40 to 158°F (-40 to 70°C). Whether in hazardous areas, indoors or outdoors, in bright sunlight or dim environments, and in wet, dirty, hot, or cold conditions, the Loop Leader is built to perform reliably almost anywhere.
 

 

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PD685 Intrinsically Safe Type 4X, IP67 Loop-Powered Meter

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.
 

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PD662 Survivor NEMA 4X Loop-Powered Process Meter

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.

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