Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
4
Introduction
The Loop Leader PD6622 and PD6624 are loop-powered, 1/8 DIN flow rate/totalizers designed for de-
manding process control applications. The four front panel buttons make setup and programming of the
meter simple and intuitive. A dual-line display featuring five digits on the top line and eight digits on the
bottom line, preprogrammed engineering units, and optional bargraph display (PD6624) provide a clear
and attractive presentation of the process. The units of measure can be changed as needed (e.g. gal-
lons/second to liters/second) without the need to re-scale the meter.
The dual-line display can be customized by the user to operate in such a way as to satisfy a specific ap-
plication. Typically, the top line is used for the rate while the bottom line is used for the total, grand total,
or engineering units. Three programmable function keys and a digital input come standard and allow the
meter to be customized for use in specialized applications.
All models come equipped with two open collector outputs and are available with two solid state relays
and a 4-20 mA analog output. These outputs can be programmed for alarm indication, signal retransmis-
sion via pulse or analog signal, pump control, and a number of other useful features.
The fact that this meter is loop-powered means that there is no need to run additional, costly power lines;
the meter gets all of the power it needs from the 4-20 mA loop. The Loop Leader loop-powered rate/total-
izer is built in a shallow-depth case with a NEMA 4X/IP65 front and features loop-powered backlighting
and a wide -40 to 167°F (-40 to 75°C) operating temperature range. It doesn't matter if it's indoors or out-
doors, in bright sunlight or a dimly lit plant, or in an area that is wet, dirty, hot, or cold, the Loop Leader
can go just about anywhere.
Ordering Information
Standard Decimal Display Models
PD6622
–LNN
Loop-Powered, No Options
PD6622
–L2N
Loop-Powered, Two Solid State Relays
PD6622
–L3N
Loop-Powered, 4-20 mA Analog Output
PD6622
–L5N
Loop-Powered, Two Solid State Relays and 4-20 mA Analog Output
Note:
all models come with two open collector outputs standard.
Decimal Display with Bargraph Models
PD6624
–LNN
Loop-Powered, No Options
PD6624
–L2N
Loop-Powered, Two Solid State Relays
PD6624
–L3N
Loop-Powered, 4-20 mA Analog Output
PD6624
–L5N
Loop-Powered, Two Solid State Relays and 4-20 mA Analog Output
Note:
all models come with two open collector outputs standard.
Enclosures
Model
Meters
Description
Mounting
PDA2407
1
Plastic NEMA 4X Enclosure
Inside Cover
PDA2410
3
Plastic NEMA 4X Enclosure
Inside Cover
PDA2411
2
Plastic NEMA 4X Enclosure
Inside Cover
PDA23XX
1-10
Economical Plastic NEMA 4X Enclosure
Through Door
PDA25XX
1-10
Plastic NEMA 4X Enclosure
Through Door
PDA26XX
1-6
Stainless Steel NEMA 4X Enclosure
Through Door
PDA27XX
1-6
Steel NEMA 4 Enclosure
Through Door
PDA2801*
1
Low-Cost Plastic NEMA 4X Enclosure
Through Cover
PDA2812
2
Low-Cost Plastic NEMA 4X Enclosure
Through Cover
Note:
XX = the last two digits of the model number.
Go to www.predig.com to find individual part numbers.
