PD689 Loop Leader Loop-Powered Intrinsically Safe & Nonincendive Flow Rate/Totalizer Digital Panel Meter

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The Loop Leader PD689 is an Intrinsically Safe and Nonincendive, loop-powered, 1/8 DIN flow rate/totalizer designed for hazardous process control applications. 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 meter gets all of the power it needs from the 4-20 mA loop. The PD689 loop-powered rate/totalizer is built in a shallow-depth case with an FM Type 4X front and features loop-powered backlighting and a wide -30 to 65°C operating temperature range. It doesn't matter if it's indoors or outdoors, in bright sunlight or a dimly lit plant, or in an area that is wet, dirty, hot, or cold, the Loop Leader can go just about anywhere. The PD689 can be installed in just about any hazardous area environment under the FM, CSA, and ATEX standards.

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
  • CE, ATEX, FM, and CSA Certified
  • Open Collector Alarm or Pulse Output
  • HART Protocol Transparent
 
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

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.

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

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