Product Type: Loop Powered Meter
Input: Current (4-20 mA)
Output Options: None
Display Category: LCD, Single Line, Bargraph
Display: 0.6″ High, 5 Digits, Bargraph, LCD
Specific Application: Process
Specific Approvals: None
Warranty: 3 years
Product Series: Loop Leader
Product Family: PD683
Product category: Digital Panel Meters, Loop Powered Meters
Product Application: Level, Pressure, Process
Precision Digital PD683-0K0Last Updated: 08/12/2018
The Loop Leader PD683 is a loop-powered, 1/8 DIN digital panel meter designed for demanding process control applications. The fact that this meter is loop-powered means that there is no need to run additional, costly power lines; the meter gets all of the power it needs from the 4-20 mA loop. The PD683 loop-powered indicator 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.
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 & labor
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.
HART Transparency: Analog input will not interfere with existing HART communications on the wired 4-20 mA signal
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.
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 zero when the flow rate drops below a user selectable value.
- Displays Flow Rate
- User Selectable Low-Flow Cutoff
- Only 2 Calibration Points Required
The programmable exponent function is used to linearize the level signal in applications using weirs and flumes and display flow rate in engineering units.
4-20 mA Connections
- 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