The Precision Digital Vantageview PD6720 is a plastic, field-mounted, loop-powered flow rate/totalizer that can display flow rate and total from an analog output (4-20 mA) flowmeter. The fact that this meter is loop-powered means that there is no need to run additional, costly power lines. The display has a five digit upper display for rate, a seven alpha-numeric character lower display for total, and comes standard with a backlight. The PD6720 is built in a NEMA 4X and IP65 rated plastic enclosure which can stand up to even the harshest environmental conditions. Two features that really make it stand out are a wide viewing angle display and SafeTouch® through-window buttons. These buttons allow the PD6720 to be programmed and operated through the cover window, thus eliminating the need to remove the cover in dirty or wet environments.
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
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 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 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