Precision Digital PD6720 Loop-Powered Flow Rate Totalizer

• 4-20 mA Input Loop-Powered
• 5-Digit, 0.7″ (17.8 mm) Upper Display
• 7 Alphanumeric Character, 0.4″ (10.2 mm) Lower Display
• Loop or External DC-Powered Backlight Standard
• SafeTouch Through-Window Button Programming
• Password Protection
• 3.0 V Drop without Backlight
• Plastic NEMA 4X, IP65 Enclosure
• Flanges for Wall or Pipe Mounting
• Linear, Square Root, or Programmable Exponent
• Operates from -40 to 75°C
• Rate in Second, Minute, Hour, or Day
• Open Collector Pulse or Alarm Output

General

Display: Upper: Five digits (-9,999 to 99,999) 0.70″ (17.8 mm) high, 7-segment, automatic lead zero blanking. Lower: Seven characters 0.4″ (10.2 mm) high, 14 segment alphanumeric. Symbols: for high & low alarm, password lock. Backlight: white
Display Update Rate: Ambient > -25°C: 2 Updates/Second. Ambient < -25°C: 1 Update/5 Seconds
Display Orientation: Display may be mounted at 90° increments up to 270° from default orientation.
Overrange: Display flashes 99,999
Underrange: Display flashes -9,999
Programming Method: Four SafeTouch® through-window buttons when cover is installed. Four internal pushbuttons when cover is removed.
Noise Filter: Programmable Lo, Med, Hi, 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.
Password: Programmable password restricts modification of programmed settings.
Advanced Functions: Live input calibration, linearization, square root, or programmable exponent
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 Range: -40 to 75°C.
Storage Temperature Range: -40 to 75°C.
Relative Humidity: 0 to 90% non-condensing
Connections: Screw terminals accept 12 to 22 AWG wire
Enclosure: NEMA 4X, IP65 plastic field enclosure. Color: grey. Material: Polycarbonate with UV Stabilizer. Three ¾” NPT threaded conduit openings. Two ¾” NPT plastic conduit plugs, with 1.29″ wrenching flats and a screwdriver slot, are included.
Mounting: May be mounted directly to conduit. Two slotted flanges for wall mounting or NPS 1½” to 2½” or DN 40 to 65 mm pipe mounting.
Overall Dimensions:5.67″ x 5.25″ x 4.18″ (W x H x D) (144 mm x 133 mm x 106 mm)
Weight: 1.65 lbs (26.4 oz, 0.75 kg)
Warranty: 3 years parts and labor

Input

Input range: 4-20 mA
Accuracy: ±0.03% of calibrated span ±1 count, square root & programmable exponent accuracy range: 10-100% of calibrated span.
Temperature Drift: 50 PPM/°C
Decimal Point: User selectable decimal point
Calibration Range: An error message will appear if input 1 and input 2 signals are too close together. Input Range: 4-20 mA. Minimum Span Input 1 & Input 2: 0.10 mA
Maximum Voltage Drop: 3.0 VDC @ 20 mA without loop-powered backlight. 6.0 VDC @ 20 mA with loop-powered backlight
Equivalent Resistance: 150 Ω @ 20 mA without loop-powered backlight. 300 Ω @ 20 mA with loop-powered backlight
Input Overload: Over current protection to 2 A max.
HART Transparency: Analog input will not interfere with existing HART communications on the wired 4-20 mA signal
Externally Powered Backlight:

Voltage RangeMaximum Power9-30 VDC9 VDC12 VDC24 VDC30 VDC
0.2 W0.25 W0.5 W0.75W

Open Collector Output

Rating: Isolated open collector, 30 VDC @ 150 mA max.
Alarm Output: Assign as rate alarm or total alarm trip point.
Deadband: 0-100% FS, user selectable
Acknowledge: Front panel ENTER button resets output and screen indication.
Pulse Output K-Factor: K-factor programmable from 0.0001 to 99999.
Pulse Output Frequency: 2, 4, 8, 16, 32, 64, 128 Hz. Minimum pulse width: 3.9 ms @ 128 Hz. Maximum pulse width: 250 ms @ 2 Hz. Factory default pulse width: 31 ms @ 16 Hz

Rate/Totalizer

Rate Display: 0 to 99,999 leading zero blanking
Total Display: 0 to 9,999,999 leading zero blanking
Total Decimal Point: Up to six decimal places or none: d.dddddd, d.ddddd, d.dddd d.ddd, d.dd, d.d, or ddddddd
Lower Display Configuration: Can be programmed to display total, tag name/engineering units, or to alternate between them.
Totalizer: Calculates total based on rate, time base of second, minute, hour, or day, and field programmable multiplier; stored in 
non-volatile memory upon power loss.
Totalizer Reset: Via front panel SafeTouch® button, time delay, external contact closure, or protected
Total Conversion Factor: 0.000001 to 9,999,999
Totalizer Rollover: Display rolls over when display exceeds 9,999,999. Relay status reflects the displayed value.
Total Reset Delay: Programmable from 0 to 99,999 seconds

Connections

Dimensions

Data Sheet: Predig_PD6720_1-Datasheet
Instruction Manual:Predig_PD6720_Manual