•  4-20 mA Input
•  5 Digit Display
•  0.6" (15.2 mm) LCD
•  FM Type 4X, IP65 Front
•  Shallow Depth Case 3.2" Behind Panel
•  2 V Drop (5.7 V with Backlight)
•  Loop-Powered Backlight
•  Custom Engineering Units
•  Bargraph Display & Trend Arrow
•  Maximum & Minimum Display
•  Square Root, or Programmable Exponent
•  Non-Volatile Memory - No Battery Needed
•  Operating Temperature Range: -30 to 65°C
•  Intrinsically Safe & Non-Incendive
•  HART Protocol Transparent

Introduction

There's nothing stripped down or bare bones about these loop-powered indicators; they're designed for demanding process control applications. Standard features include a full 5-digit backlit display with bargraph, on-screen custom engineering units, and max/min display capabilities. There are two models available: the PD683 is for general-purpose applications and the PD688 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 PD683 and PD688 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 PD688, with its FM approval and CSA certification, can be installed in just about any hazardous area environment.

Square root and programmable exponent functions are standard features on the PD683 and PD688. With these features these indicators can display flow from a DP transmitter or open channel flow in weirs and flumes.

Notes:

1. Panel cutout required: 1.772 x 3.622 (45 x 92)
   
2. Panel thickness: 0.040 – 0.250(1.0 – 6.4)
   
3. Mounting brackets lock in place for easy mounting

General
Display:Five digits: -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)
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 non-volatile 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 w/o backlight, 315 Ω @ 20 mA with backlight
Normal Mode Rejection: 64 dB at 50/60 Hz
Operating temperature range: -30 to 65°C
Allowable Temperature Range: -40 to 65°C* (see note below)
Storage temperature range: -40 to 65°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 connections
Overall Dimensions: 2.45" x 4.68" x 4.19" (62 x 119 x 106 mm)
Weight: 5.7 oz (162 g)
Warranty: 3 years parts and 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 four decimal 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

* Below -30°C the LCD becomes less readable. See application note AN-1005

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