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Test & Measurement
Instruments
PD6820 ProtEX- RTA Explosion-Proof Loop-Powered Flow Rate/Totalizer
The ProtEX-RTA PD6820 is an explosion-proof, 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 into a hazardous area. 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. Like all ProtEX products, the PD6820 explosion-proof flow rate/totalizer carries FM, CSA, ATEX, and IECEx approvals for use in hazardous areas. Two features that really make this flow rate/totalizer stand out are a wide viewing angle display and SafeTouch® through-glass buttons. These buttons allow the PD6820 to be programmed and operated through the glass, thus eliminating the need to remove the cover in a hazardous area.
Features
|
Specifications & Spare Parts
| 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-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 | 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 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 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 | — |
| 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-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 | 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 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 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. |
| Voltage Range | |
| Voltage Range | 9-30 VDC |
| 9 VDC | 0.2 W |
| 12 VDC | 0.25 W |
| 24 VDC | 0.5 W |
| 30 VDC | 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 |
| 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, AExd 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 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 to 75°C. Enclosure: Type 4X & IP66. Certificate number: 11 2325749 |
