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Features 4-20 mA Input 5-Digit LCD, 0.6" (15.2 mm) High Overflow Displays Total up to 8 Digits Programmable Alternating Rate/Total Display FM Type 4X, IP65 Front Shallow Depth Case 3.2" Behind Panel 2 V Drop (5.7 V with Backlight)   Loop-Powered Backlight Standard   Custom Engineering Units & Bargraph   Square Root or Programmable Exponent   Non-Volatile Memory - No Battery Needed   Maximum & Minimum Display   Operating Temperature Range: -20 to 65°C   Intrinsically Safe & Non-Incendive   Open Collector Alarm or Pulse Output   HART Protocol Transparent

Introduction These loop-powered rate/totalizers can display rate up to five digits and total up to eight digits using the total overflow feature described below. The display can be programmed to automatically or manually toggle between rate and total. Standard features include a backlit display with bargraph, on-screen custom engineering units, max/min display and open collector output. There are two models available: the PD684 is for general-purpose applications and the PD689 is for hazardous area applications. Even with all the features packed into these meters, they're still easy to setup and get running. Everything is programmed from the front panel buttons with no pots or jumpers to deal with. In fact, these indicators can be scaled without a signal source for even quicker setup.

The PD684 and PD689 go just about anywhere with their shallow-depth case, FM Type 4X front, loop-powered backlighting, and wide operating temperature range. It doesn't matter if they're indoors or outdoors, in bright sunlight, or a dimly lit plant, wet, dirty, hot or cold. And the PD689, with its FM Approval and CSA Certification, can be installed in just about any hazardous location. Square root and programmable exponent functions are standard features on the PD684 and PD689. With these features, these indicators can display flow rate and total from a DP transmitter or open channel flow in weirs and flumes.

Key Features Through significant innovation in technology and design, we developed the Loop Leader® Series of loop-powered rate/totalizer that is loaded the standard features and build tough for all environments. Full Featured Everything comes standard with these meters. The competition may charge extra for for loop-powered backlighting, open collector output and programmable exponent capability, but these and a host of other key features are standard on these indicators. Install Just About anywhere Indoors, outdoors, bright sunlight, dimly lit plant, wet, dirty, hot or cold- these indicators go just about anywhere. Their shallow-depth case, FM Type 4X front, loop-powered backlighting, and wide operating temperature range are all standard features. And the PD689 with its FM Approval and CSA Certification can be installed in just about any hazardous location.	4-20 mA Input Connections
Alternating Rate & Totalizer Display Press Enter/ACK button to alternate between rate and total or program the totalizer so the display automatically changes between displaying rate and total every 10 seconds. This feature is particularly useful if the meters are mounted inside a NEMA 4X or an explosion-proof enclosure.	Square Root Function Square Root Function The square root extraction feature displays flow rate by extracting the square root from a differential pressure transmitter signal. The user selectable low-flow cutoff feature gives a reading of    •Displays Flow Rate    •User Selectable Low-Flow Cutoff    •Only 2 Calibration Points Required
Programmable Exponent The programmable exponent function is used to linearize the level signal in applications using weirs and flumes and display flow rate in engineering units.	Totalizer Conversion Factor The totalizer conversion factor is a number which is multiplied by the rate to compute total. For example, if the rate display is gallons per hour and total is desired in liters, a factor of 3.7843 should be used. If the display is gallons per hour and total is desired in gallons, a factor of 1 should be used.
Total & Overflow Display This feature allows the PD684 & PD689 to display total values up to eight digits. This sample shows a total of 68,923,684.	Alarm Condition After an alarm tripped simply press the ACK button for 3 seconds to acknowledge the alarm or wait for the alarm to reset automatically.
Setup and Programming Easy Setup Even with all the features packed into these meters, they’re still easy to setup and get running. Everything is programmed from the front panel buttons with no pots or jumpers to deal with. In fact, these meters can be scaled without a signal source for even quicker setup. Main Menu The Main menu consists of the most commonly used functions: Setup, Program, and Password
Advanced Features Menu	Isolated Open Collector Output
To simplify the set up process, functions not needed for most applications are located in the Advanced Featured menu. Press and hold the Menu button for 5 seconds to access the advanced features of the meter.	The open collector output may be assigned as a pulse or alarm output. As a pulse output this feature will produce one pulse output per a given number of counts (user select). For example, these meters can be programmed to produce one pulse for every 500 gallons totalized. This output can be sent to a PLC or a counter. As an alarm output this feature allows high or low rate indication or total set point indication.
Installation There is no need to remove the meter from its case to complete the installation, wiring, and setup of the meter.
Mounting Dimensions Notes: Panel cutout required: 3.622 x 1.772 (92 x 45)   Panel thickness: 0.040 – 0.250(1.0 – 6.4)   Mounting brackets lock in place for easy mounting
Optional Field Enclosures Enclosures available for one to six meters
PDA2706 NEMA 4 Enclosure Shown with Six PD684 Meters	PDA2801 Low-cost NEMA 4X Enclosure Shown with One PD684
Specifications General Display: 5-digit LCD (-99999 to 99999), 0.60" (15.2 mm) high, 7-segment, automatic lead zero blanking. Engineering Units: 0.25" (6.4 mm) high, 14-segment. Bargraph: 20-segment, 0% to 100% indication. Trend arrows: Up and down trend indication. Backlight: Bright orange (intensity varies with signal) Front Panel: FM Type 4X, IP65; panel gasket provided Display Update Rate: 2.5/second Overrange: Display flashes 99999 Underrange: Display flashes -99999 Programming Method: Four front panel buttons Noise Filter: Programmable from 1 to 199 Recalibration: 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. Non-Volatile Memory: All programmed settings are stored in nonvolatile memory for a minimum of ten years if power is lost. Voltage Drop: 2.0 V max w/o backlight, 5.7 V max with backlight Equivalent Resistance: 125 Ω @ 20 mA without backlight, 315 Ω @ 20 mA with backlight. Normal Mode Rejection: 64 dB at 50/60 Hz Operating temperature range: -20 to 65°C Allowable temperature range: -40 to 65°C* (see note below) Storage temperature range: -40 to 85°C Relative humidity: 0 to 90% non-condensing Connections: Screw terminals accept 12 to 22 AWG wire Enclosure: 1/8 DIN, high impact plastic, UL 94V-0, color: gray Mounting: 1/8 DIN panel cutout required. Two panel mounting bracket assemblies provided. Tightening Torque: 4.5 lb-in (0.5 Nm) Screw terminal connectors Overall Dimensions: 4.68" x 2.45" x 3.79" (119 x 62 x 96 mm) Weight: 5.7 oz (162 g) Warranty: 3 years parts & labor Extended Warranty: 1 or 2 years Input Input Range: 4-20 mA Accuracy: ±0.03% of span ±1 count, square root and programmable exponent: 10-100% FS. Calibration: Scale without signal or calibrate with signal source Calibration Range: User programmable over entire range of meter Minimum Span: 0.40 mA between input 1 and input 2 Note: An Error message will appear if input 1 and input 2 signals are too close together. Input Overload: Over current protection to 2 A max. Decimal Point: Up to 4 places (d.dddd, dd.ddd, ddd.dd, dddd.d, or ddddd) Function: Linear, square root, or programmable exponent Low-Flow Cutoff: -99999 to 99999 (-99999 disables cutoff function) Temperature Drift: 50 PPM/°C from -40 to 65°C ambient Totalizer Features Total Display: 0 to 99,999 main total display plus 0 to 999 total overflow for a combined 8 digit total of 99,999,999. Alternating Display: Display may be programmed to alternate between rate and total every 10 seconds. Time Base: Seconds, minutes, hours, or days Totalizer Conversion Factor: 0.0001 to 99999 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 Rollover: Total rolls over when total exceed 99,999,999. Totalizer Reset: Manual reset or automatic with time delay, or disabled for non-resettable total applications. Open Collector Output Rating: Isolated open collector, 30 VDC @ 175 mA max. Alarm Output: Assign to rate or total, high or low rate alarm. Deadband: 0-100% of full scale, user selectable Acknowledge: ACK button resets output and screen indication. Automatic Reset: Alarm resets automatically when signal reaches the reset point. Pulse Output: 250 pulses/sec max; pulse width: 3 ms, fixed. If the pulse output exceeds the maximum pulse output, counts are accumulated as pending and are not lost. One pulse per total increment, programmable from 0.0001 to 99999 (decimal point based on total selection). * Below -20°C the LCD becomes less readable. See application note AN-1005 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. PD689 Approvals for Hazardous Locations FM Approved & CSA Certified as intrinsically safe with entity for use in Class I, Div 1, Groups ABCD; Class II, Div 1, Groups EFG; Class III, Div 1; Class I, Zone 0, Group IIC; T-code = T4. Non-incendive: Suitable for use in Class I, Div 2, Groups ABCD; Class II, Div 2, Groups FG; Class III, Div 2. Entity Parameters: Ui: 30 V; Ii: 175 mA; Ci: 0; Li: 0; Pi: 1.0 W ATEX II 1G, Ex ia IIC T4, IP65, Ta = -40°C to 65°C Note: Installation must be performed in accordance with Control Drawing LIM688-2
ORDERING INFORMATION Products Model Description   Blue dot denotes item as a Quick Ship product   PD684-0K1        Loop-Powered Flow Rate/Totalizer for Safe Area          PD689-0K1        FM Approved & CSA Certified Loop-Powered Flow Rate/Totalizer            Enclosures Model Description   PDA2302        Economical Plastic NEMA 4X Enclosure for 2 Type A, B, C, or E Meters          PDA2303        Economical Plastic NEMA 4X Enclosure for 3 Type A, B, C, or E Meters          PDA2304        Economical Plastic NEMA 4X Enclosure for 4 Type A, B, C, or E Meters          PDA2305        Economical Plastic NEMA 4X Enclosure for 5 Type A, B, C, or E Meters          PDA2306        Economical Plastic NEMA 4X Enclosure for 6 Type A, B, C, or E Meters          PDA2307        Economical Plastic NEMA 4X Enclosure for 7 Type A, B, C, or E Meters          PDA2308        Economical Plastic NEMA 4X Enclosure for 8 Type A, B, C, or E Meters          PDA2309        Economical Plastic NEMA 4X Enclosure for 9 Type A, B, C, or E Meters          PDA2310        Economical Plastic NEMA 4X Enclosure for 10 Type A, B, C, or E Meters          PDA2312        Economical Plastic NEMA 4X Enclosure for 2 Type A, B, C, or E Meters          PDA2322        Economical Plastic NEMA 4X Enclosure for 1 Type D + 1 Type C Meter          PDA2407        Plastic NEMA 4X Enclosure for 1 Meter (Any Type)          PDA2411        Plastic NEMA 4X Enclosure for 2 Meter (Any Type)          PDA2414        Plastic NEMA 4X Enclosure for 1 Type D + 1 Type A, B, C or E Meter          PDA2501        Plastic NEMA 4X Enclosure for 1 Type C Meter          PDA2502        Plastic NEMA 4X Enclosure for 2 Type C Meters          PDA2503        Plastic NEMA 4X Enclosure for 3 Type C Meters          PDA2504        Plastic NEMA 4X Enclosure for 4 Type A, B, C, or E Meters          PDA2505        Plastic NEMA 4X Enclosure for 5 Type A, B, C, or E Meters          PDA2506        Plastic NEMA 4X Enclosure for 6 Type A, B, C, or E Meters          PDA2507        Plastic NEMA 4X Enclosure for 7 Type A, B, C, or E Meters          PDA2508        Plastic NEMA 4X Enclosure for 8 Type A, B, C, or E Meters          PDA2509        Plastic NEMA 4X Enclosure for 9 Type A, B, C, or E Meters          PDA2510        Plastic NEMA 4X Enclosure for 10 Type A, B, C, or E Meters          PDA2512        Plastic NEMA 4X Enclosure for 2 Type A, B, C, or E Meters          PDA2522        Plastic NEMA 4X Enclosure for 1 Type D + 1 Type C Meter          PDA2601        Stainless Steel NEMA 4X Enclosure for 1 Type C Meter          PDA2602        Stainless Steel NEMA 4X Enclosure for 2 Type C Meters          PDA2603        Stainless Steel NEMA 4X Enclosure for 3 Type C Meters          PDA2604        Stainless Steel NEMA 4X Enclosure for 4 Type A,B, C or E Meters          PDA2605        Stainless Steel NEMA 4X Enclosure for 5 Type A,B, C or E Meters          PDA2606        Stainless Steel NEMA 4X Enclosure for 6 Type A,B, C or E Meters          PDA2622        Stainless Steel NEMA 4X Enclosure for 1 Type D + 1 Type C Meter          PDA2701        Steel NEMA 4 Enclosure for 1 Type C Meter          PDA2702        Steel NEMA 4 Enclosure for 2 Type C Meters          PDA2703        Steel NEMA 4 Enclosure for 3 Type C Meters          PDA2704        Steel NEMA 4 Enclosure for 4 Type A, B, C, or E Meters          PDA2705        Steel NEMA 4 Enclosure for 4 Type A, B, C or E Meters          PDA2706        Steel NEMA 4 Enclosure for 5 Type A, B, C or E Meters          PDA2722        Steel NEMA 4X Enclosure for 1 Type D + 1 Type C Meter          PDA2801        Low-Cost Plastic NEMA 4X Enclosure for 1 Type C Meter          PDA2811        Low-Cost Plastic NEMA 4X Enclosure for 1 Meter (Type A, B, C or E)          PDA2812        Low-Cost Plastic NEMA 4X Enclosure for 2 Meters (Any type)          PDA2821        Low-Cost Plastic NEMA 4X Enclosure for 1 Type D Meter + 1 Type A, B, C or E Meter