Wilkerson Instrument Co. Homepage A World of Signal Conditioning & Process Control Instrumentation Products


PD698
EXPLOSION-PROOF
LOOP-POWERED
FLOW RATE/TOTALIZER

FUNCTIONS

bullet4½ Digit Rate Display
bullet6 Digit Total Display
bullet4-20 mA Input
bulletLinear or Square Root Input
bulletLoop-Powered Backlighting
bulletEasy Single Button Scaling

SPECIFICATIONS
Except where noted all specifications apply to operation at +25°C.

INPUT
4-20 mADC @ 24 VDC maximum, Linear or Square Root

DISPLAY
Sharp 6 digit, 0.5" (12.7mm) high LCD
Rate: 0 to 19,999. Total: 0 to 999,999
Automatic lead zero blanking, user selectable decimal point

DISPLAY UPDATE RATE
1 per second

ALTERNATING DISPLAY
Display may be programmed to alternate between rate and total every 10
seconds.

MINIMUM INPUT CURRENT
3.5 mADC

MAXIMUM VOLTAGE DROP
5.6 VDC @ 20 mA
Model with Backlighting: 7.0 VDC @ 20 mA

CALIBRATION RANGE
Single Button Scaling. 4 mA input may be set anywhere in range of the meter. The 20 mA input may be set anywhere in range of the meter, above or below 4 mA input. An Error message will appear if Input 1 signal and Input 2 signal are too close together.

MINIMUM INPUT SPAN
1.6 mA between Input 1 and Input 2

LINEAR INPUT ACCURACY
±0.05% of calibrated span, ±1 count

SQUARE ROOT EXTRACTION ACCURACY
± 0.1% F.S. ± 1 count from 10-100% of flow; ± 1% (0-10% flow)

NOISE FILTER
The field selectable noise filter allows the meter to be programmed so that an unsteady (noisy) input can be displayed with greater stability.

NON-VOLATILE MEMORY
All programming values are stored in nonvolatile memory for a minimum of ten years if power is lost. No battery required.

PULSE OUTPUT RATING
Isolated open collector, 24 VDC @ 20 mA; maximum pulse output, 30 pulses per second; pulse width: 16 ms. If the pulse output exceeds the maximum pulse output (30 pulses per second), the total will flash and counts will be lost in the totalizer and the output.

LOCKOUT
Jumper JP1 restricts modification of calibration values.

TOTALIZER
Calculates total based on rate and field programmable totalizer conversion factor to display total in any engineering units.

TOTALIZER CONVERSION FACTOR
Any number between .00001 and 59999.

TOTAL RESET
Via front panel button, or external contact closure

EXTERNAL TOTAL RESET
Connect terminals R and CM

LOW-FLOW CUTOFF
1 count to 100% F.S., user selectable. To disable low-flow cutoff, program cutoff value to zero. Meter does not totalize below low-flow cutoff value.

LOOP-POWERED BACKLIGHTING OPTION
Powered directly off the 4-20 mA loop, no batteries required. The display brightness will increase as the input signal current increases.

ENVIRONMENTAL
Operating temperature range: 0 to +65°C
Storage temperature range: -30 to +80°C
Relative humidity: 0 to 90% non-condensing

ENCLOSURE
Cast aluminum, approved by FM and CSA; NEMA 4,7 & 9; Class I, Groups B, C & D and Class II, Groups E, F & G. Two 3/4" NPT holes provided.

CONNECTIONS
Removable screw terminal block (provided), accepts 22 to 12 AWG wire.

WARRANTY
1 year parts & labor.

EXTENDED WARRANTY
Warranty may be extended an additional 12 months by returning the Product Registration Form within 2 months from date of purchase.

ORDERING INFORMATION

Model Description
PD698-N Explosion-Proof Loop-Powered Totalizer
PD698-N-EX FM, CSA & CENELEC Certified Explosion-Proof
PD698-B Explosion-Proof Loop-Powered Totalizer with Loop-Powered Backlighting Option
PD698-B-EX FM, CSA & CENELEC Certified Explosion-Proof with Loop-Powered Backlighting Option

 
Accessories
PDA6844 Panel Mounting Kit *Does not provide NEMA 4X seal to panel
PDA6845 2" Pipe Mounting Kit
PDA-MAG Reed Switch Magnet
PDA2451-R Explosion Proof Control Station for 1 Total Reset Switch