ProtEX™PD6820 LOOP-POWERED RATE/TOTALIZER
www.predig.com
LDS6820_C 03/11
PRECISION DIGITAL CORPORATION
89 October Hill Rd • Holliston MA 01746 USA • Tel (800) 343-1001 • Fax (508) 655-8990
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
Product Ratings & Approvals
FM: Explosion-proof for use in Class I, Division 1, Groups B, C, D. Class II,
Division 1, Groups E, F, G. Class III, Division 1; T6. Class I, Zone 1, AEx
d IIC T6 Gb. Zone 21, AEx tb IIIC T85°C. Ta = -40 to 75°C.
Enclosure: Type 4X & IP66. Certificate number: 3040391
ATEX: II 2 G D. Ex d IIC T6 Gb. Ex tb IIIC T85°C Db IP68.
Ta = -40 to 75°C. Certificate number: Sira 10ATEX1116X
IECEx: IECEx SIR 10.0056X. Ex d IIC T6 Gb. Ex tb IIIC T85°C Db IP68.
Ta = -40°C to +75°C
CSA: Class I, Division 1, Groups B, C, D. Class II, Division 1, Groups E,
F, G. Class III, Division 1; T6. Class I, Zone 1, Ex d IIC T6.
Ta = -40°C to +75°C Certificate number: 11 2325749
SPECIFICATIONS
Except where noted all specifications apply to operation at +25°C.
General
Display: Upper: Five digits (-9999 to 99999) 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
Overrange: Display flashes 99999
Underrange: Display flashes -9999
Programming Method: Four SafeTouch™ through-glass 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: Linear, 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 85°C.
Relative Humidity: 0 to 90% non-condensing
Connections: Screw terminals accept 12 to 22 AWG wire
Enclosure: Explosion-proof die-cast aluminum with glass window,
corrosion resistant epoxy coating, color: blue. NEMA 4X, 7, & 9, IP68.
Copper-free (0.3%). Two ¾" NPT threaded conduit openings.
One ¾" NPT metal conduit plug with 12 mm hex key fitting installed.
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: 5.65" x 5.25" x 4.86" (W x H x D)
(144 mm x 133 mm x 124 mm)
Weight: 5.00 lbs (80 oz, 2.27 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.
Externally Powered Backlight:
Voltage Range Maximum Power
9-30 VDC 9 VDC 12 VDC 24 VDC 30 VDC
0.2 W 0.25 W 0.5 W 0.75 W
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 ACK 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
ORDERING INFORMATION
ProtEX-RT PD6820 • Explosion-Proof Rate/Totalizer
Model Description
PD6820-0K0 Explosion-Proof Loop-Powered Rate/Totalizer
with Backlight
Your Local Distributor is:
Disclaimer
The information contained in this document is subject to change without notice. Precision Digital
Corporation makes no representations or warranties with respect to the contents hereof, and
specifically disclaims any implied warranties of merchantability or fitness for a particular purpose.
©2011 Precision Digital Corporation. All rights reserved.
DIMENSIONS
3.35 (85.0)
4.15 (105.5)
3.22 (81.9) 4.86
(123.5)
.
.
2.25 (57.1)
0.33
(8.4) 5.65
(143.5)
5.25 (133.4)
Units: Inch (mm)
