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Test & Measurement
Instruments
PD8-6100 ProtEX- MAX Explosion-Proof Strain Gauge Load Cell & MV Meter
The ProtEX-MAXTM PD8-6100 offers all the functionality of the ProVu PD6100 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. It accepts strain gauge & load cell inputs and mV signals up to 300 mV (unipolar) and ± 250 mV (bipolar) for weight and force measurement applications. The PD8-6100 strain gauge meter’s dual-line display and powerful dual-scale capability allows the measurement to be displayed in two different units of measure. Another use for the PD8-6100’s dual-lines is to simply display the units of measure on the bottom line. SafeTouch® through-glass buttons allow for access to zero, tare, and other functions without the need to remove the enclosure cover. The PD8-6100 includes a 24 VDC power supply to drive the sensors and can be equipped with up to four internal relays and two 4-20 mA outputs.
Quick Overview
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Features
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Specifications & Spare Parts
General
| Display | Upper display: 0.60″ (15 mm) high. Lower display: 0.46″ (12 mm) high. Both are 6 digits (-99999 to 999999), red LEDs. |
| Display Intensity | Eight intensity levels |
| Display Update Rate | 5/second (200 ms) |
| Overrange | Display flashes 999999 |
| Underrange | Display flashes -99999 |
| Display Assignment | The upper and lower displays may be assigned to PV1, PV2, PCT (percent), max/min, alternate max & min, set points, units (lower display only), or Modbus input. |
| Programming Methods | Four through-glass SafeTouch buttons, four mechanical buttons behind glass, digital inputs, PC and MeterView Pro software, or Modbus registers. |
| F4 Digital Input Contacts | 3.3 VDC on contact. Connect normally open contacts across F4 to COM. |
| F4 Digital Input Logic Levels | Logic High: 3 to 5 VDC; Logic Low: 0 to 1.25 VDC |
| Noise filter | Programmable from 2 to 199 (0 will disable filter) |
| Filter Bypass | Programmable from 0.1 to 99.9% of calibrated span |
| Recalibration | Calibrated at the factory. 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 | Three programmable passwords restrict modification of programmed settings. |
| Non-Volatile Memory | All programmed settings are stored in nonvolatile memory for a minimum of ten years if power is lost. |
| Input Power Options | 85-265 VAC 50/60 Hz, 90-265 VDC, 20 W max, or optional model with 12-24 VDC ±10%, 15 W max. |
| Fuse | Required external fuse: UL Recognized, 5 A max, slow blow; up to 6 meters may share one 5 A fuse. |
| Isolated Sensor Power Supply | Terminals Ex+ & Ex-: 10 VDC or 5 VDC ± 10%. Rated @ 350 mA max. Note: Do not use 24 VDC to power strain gauge bridge |
| Normal Mode Rejection | Greater than 60 dB at 50/60 Hz |
| Isolation | 4 kV input/output-to-power line. 500 V input-to-output or output-to-P+ supply. |
| Overvoltage Category | Installation Overvoltage Category II: Local level with smaller transient overvoltages than Installation Overvoltage Category III. |
| Environmental | T6 Class operating temperature range Ta = -40 to 60°C T5 Class operating temperature range Ta = -40 to 65°C |
| Max Power Dissipation | Maximum power dissipation limited to 15.1 W. See PD8 instruction manual for additional details. |
| Connections | Removable screw terminal blocks accept 12 to 22 AWG wire, RJ45 for external relays, digital I/O, and serial communication adapters. |
| Enclosure | Explosion-proof die-cast aluminum with glass window, corrosion-resistant epoxy coating, color: blue. NEMA 4X, 7, & 9, IP68. Default conduit connections: Four ¾” NPT threaded conduit openings and two ¾” NPT metal conduit plugs with 12 mm hex key fitting installed. Additional conduit opening configurations may be available; verify quantity and sizes on specific device labeling during installation. |
| Mounting | Four slotted flanges for wall mounting or NPS 1½” to 2½” or DN 40 to 65 mm pipe mounting |
| Dimensions | 6.42″ x 7.97″ x 8.47″ (W x H x D) (163 mm x 202 mm x 215 mm) |
| Weight | 16.0 lbs (7.26 kg) |
| Warranty | 3 years parts & labor |
| USB Connection | Compatibility: USB 2.0 Standard, Compliant Connector Type: Micro-B receptacle Cable: USB A Male to Micro-B Cable Driver: Windows 98/SE, ME, 2000, Server 2003/2008, XP 32/64-Bit, Vista 32/64-Bit, Windows 7 32/64-Bit, Windows 10 32/64-Bit Power: USB Port |
Strain Gauge Input
| Inputs | Field selectable: 0-15, 0-30, 0-150, 0-300 mV, ±15, ±25, ±150, ±250 mV, or Modbus PV (Slave) | ||||||||||
| Accuracy | ±0.03% of calibrated span ±1 count | ||||||||||
| Temperature Drift | 0.002% of calibrated span/°C max from 0 to 65°C ambient, 0.005% of calibrated span/°C max from -30 to 0°C ambient | ||||||||||
| Function | Linear with multi-point linearization | ||||||||||
| Low-Flow Cutoff | 0-999999 (0 disables cutoff function) | ||||||||||
| Decimal Point | Up to five decimal places or none: d.ddddd, dd.dddd, ddd.ddd, dddd.dd, ddddd.d, or dddddd. | ||||||||||
| Calibration Range |
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| Input Impedance | Voltage ranges: greater than 1 MΩ |
Relays
| Rating | 2 or 4 SPDT (Form C) internal and/or 4 SPST (Form A) external; rated 3 A @ 30 VDC and 125/250 VAC resistive load; 1/14 HP (≈ 50 watts) @ 125/250 VAC for inductive loads such as contactors, solenoids, etc. |
| Noise Suppression | Noise suppression is recommended for each relay contact switching inductive loads. |
| Deadband | 0-100% of span, user programmable |
| High or Low Alarm | User may program any alarm for high or low trip point. Unused alarm LEDs and relays may be disabled (turned off). |
| Relay Operation | Automatic (non-latching), latching (requires manual acknowledge), sampling (based on time), pump alternation control (2 to 8 relays), Off (disable unused relays and enable interlock feature, manual on/off control mode). |
| Relay Reset | User selectable via front panel buttons or digital inputs. 1. Automatic reset only (non-latching), when input passes the reset point. 2. Automatic + manual reset at any time (non-latching). 3. Manual reset only, at any time (latching). 4. Manual reset only after alarm condition has cleared (latching). Note: Front panel button or digital input may be assigned to acknowledge relays programmed for manual reset. |
| Time Delay | 0 to 999.9 seconds, on & off relay time delays. Programmable and independent for each relay. |
| Fail-Safe Operation | Programmable and independent for each relay. |
| Auto Initialization | When power is applied to the meter, relays will reflect the state of the input to the meter. |
Serial Communications
| Compatability | EIA-485 |
| Connectors | Removable screw terminal connector |
| Max Distance | 3,937′ (1,200 m) max |
| Status Indication | Separate LEDs for Power (P), Transmit (TX), and Receive (RX) |
| Protocol | Modbus® RTU (Slave Only) |
| Meter Address/Slave ID | 1 – 247 |
| Baud Rate | 300 – 19,200 bps |
| Transmit Time Delay | Programmable between 0 and 199 ms or transmitter always on for RS-422 communication |
| Data | 8 bit (1 start bit, 1 or 2 stop bits) |
| Parity | Even, odd, or none with 1 or 2 stop bits |
| Byte-to-Byte Timeout | 0.01 – 2.54 seconds |
| Turn Around Delay | Less than 2 ms (fixed) |
| Note | Refer to the ProVu Modbus Register Tables for details |
Isolated 4-20 mA Transmitter Output
| Output Source | Process variable (PV), max, min, set points 1-8, manual control setting, or Modbus input | |||||||||
| Scaling Range | 1.000 to 23.000 mA for any display range | |||||||||
| Calibration | Factory calibrated: 4.000 to 20.000 = 4-20 mA output | |||||||||
| Analog Output Programming | 23.000 mA maximum for all parameters: Overrange, underrange, max, min, and break | |||||||||
| Accuracy | ± 0.1% of span ± 0.004 mA | |||||||||
| Temperature Drift | 0.4 µA/°C max from 0 to 65°C ambient, 0.8 µA/°C max from -40 to 0°C ambient Note: Analog output drift is separate from input drift. |
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| Isolated Transmitter Power Supply | Terminals I+ & R: 24 VDC ± 10%. Isolated from the input at >500 V. May be used to power the 4-20 mA output or other devices (except load cell/strain gauge). All models @ 25 mA max. | |||||||||
| External Loop Power Supply | 35 VDC maximum | |||||||||
| Output Loop Resistance |
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Digital Inputs and Outputs
| Channels | 4 digital inputs & 4 digital outputs per module |
| System | One expansion module may be added for a total of 8 inputs & 8 outputs Note: The jumper located between the RJ45 connectors must be removed on the expansion module. |
| Digital Input Logic | High: 3 to 5 VDC Low: 0 to 1.25 VDC |
| Digital Output Logic | High: 3.1 to 3.3 VDC Low: 0 to 0.4 VDC |
| Source Current | 10 mA maximum output current |
| Sink Current | 1.5 mA minimum input current |
| +5 V Terminal | To be used as pull-up for digital inputs only. Connect normally open pushbuttons across +5 V & DI 1-4. Warning: DO NOT use +5 V terminal (pin 1) to power external devices. |
| Function Assignment | The on-board digital inputs (1-4) are designed to mimic the behavior of the front panel buttons (Menu, F1, F2, & F3). If you wish to change their behavior, re-assign F1-F3 to the desired function, then change the corresponding digital input to match. |
4-Relay Expansion Module
| Relays | Four Form A (SPST) rated 3 A @ 30 VDC and 125/250 VAC resistive load; 1/14 HP (approx. 50 watts) @ 125/250 VAC for inductive loads. |
Product Ratings and Approvals
| FM Enclosure | Type 4X; IP66 Class I, Division 1, Groups B, C, D Class II, Division 1, Groups E, F, G Class III, Division 1, T5/T6 Class I, Zone 1, AEx d, IIC Gb T5/T6 Zone 21, AEx tb IIIC T90°C; Ta -40°C to +65°C T6 Ta = -40°C to +60°C; T5 Ta = -40°C to +65°C Certificate Number: 3047283 |
| CSA | Class I, Division 1, Groups B, C, D Class II, Division 1, Groups E, F, G Class III, Division 1 Class I Zone 1 Ex d IIC Zone 21 Ex tb IIIC T90°C -40°C < Tamb. < +60° C; Temperature Code T6 -40°C < Tamb. < +65° C; Temperature Code T5 Enclosure Type 4X & IP66 Certificate Number: 2531731 |
| ATEX | II 2 G D Ex d IIC T* Gb Ex tb IIIC T90°C Db IP68 Ta = -40°C to +*°C *T6 = -40°C to +60°C *T5 = -40°C to +65°C Certificate number: Sira 12ATEX1182 |
| IECEx | Ex d IIC T* Gb Ex tb IIIC T90°C Db IP68 Ta = -40°C to +*°C *T6 = -40°C to +60°C *T5 = -40°C to +65°C Certificate Number: IECEx SIR 12.0073 |
