FLOW RATE / TOTALIZERS FOR PULSE INPUTS
MODEL PD693 FREQUENCY/PULSE INPUT |
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Common Features
- 4½ digit + extra zero display for rate
- 6 digit display for total
- Alternating rate/total display
- Any relay for rate or total
- Time base in seconds, minutes, hours, or days
- Quick points for easy batch setting
- Pulse, open collector, NPN, PNP, TTL, switch contact, square wave inputs
- 12 VDC @ 50 mA or 24 VDC @ 20 mA excitation
- Gate function for rate display of slow pulse rates
- K-Factor, internal or external calibration
- 4-20 mA output option converts the pulse
input to an isolated 4-20 mA output
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FEATURES
The PD693 is a six digit rate/totalizer/batch controllers used to display flow rate and total, control automatic or manual batching, and provide various higher level functions including programmable root extraction and pump alternation control. The PD693 accepts pulse, square wave, and 0-5 V or 0-12 V @ 30 kHz inputs.
Single Button Scaling
Single button scaling means that these meters can be completely programmed using only one button. Simply press the ENTER button to initiate the automatic menu scan. When the desired menu appears press the ENTER button again. Once in a menu, press the ENTER button when the display reads the desired value. To exit setup & programming press the ACK (Acknowledge) button while displaying any of the main menus. It’s that simple!
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Stand Alone Scaling
The PD693 may be scaled without a signal source or calibrated with a signal source. |
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Lockout and Menu-Title Disabling
The ability to modify programming values can be restricted by installing a lockout jumper on terminals at the rear of the instrument. In addition, certain menu titles can be programmed not to appear during the menu scroll with the display menu.
Menu titles that can be excluded with menu functions
 Functions that can be locked out with the lockout jumper
Four Visual Alarms Standard
The PD693 have four visual independent alarm points. Each is easily programmed for high or low set point and 100% deadband. Front panel LEDs indicate alarm status and assist in set point/reset point programming.
Simplify Loops with Internal Power Supply
The PD693 provides 12 VDC at 50 mA or 24 VDC at 20 mA to power either the flowmeter input or the 4-20 mA output.
FLOW FEATURES
The PD693 may be used to display flow rate and total from a wide variety of flowmeters. For flow rate applications, these meters feature programmable time base of seconds, minutes, hours, and days, a 4½ digit plus extra zero display, and low-flow cutoff capability. For total applications, these meters feature a full six-digit display, a programmable totalizer conversion factor, and the ability to automatically or manually toggle back and forth between rate and total display. New features include gate function and contact de-bounce filter functions for the PD693. In addition, these meters’ new full diagnostic menu simplifies programming troubleshooting.
OPTIONS
The PD693 can be equipped with 2 or 4 SPDT relays and 4-20 mA output options. Any one of the relays can be programmed to function on the rate or the total. The 4-20 mA output option provides signal isolation and is very useful for converting the pulse output from a flowmeter into a 4-20 mA signal.
Rate Relays
Rate relays are field programmable as latching or non-latching and 0-100% adjustable deadband. They can be used as high or low alarms or for simple on-off control, such as sump-pump control. Pairs of rate relays can also be programmed to alternate making these meters ideal for pump control applications.
Total Relays
Total relays can be programmed for manual ( for External Reset) or automatic ( for Internal Reset) batch control. To simplify and speed up batch-size changes, total relays can be programmed so the first preset always trips at a user-defined offset value before the main preset trips. In addition, the Priority Batch Programming feature allows the user to program the batch presets without having to go through the entire menu. Simply hold the ENTER button for three seconds and the meter jumps right to batch presets.
4-20 mA Output Option
The PD693 can be equipped with an isolated 4-20 mA output signal option that can be programmed to produce a 4-20 mA output signal for virtually any input. The 4-20 mA output signal can be powered either by the internal or an external power supply. If the internal power supply is used, it is not available to power the transmitter input. The 4-20 mA output provides 500 VDC or peak AC, input-to-output or input/output-to-power isolation.
PUMP ALTERNATION
Precision Digital products are used in many applications for pump control because they are simple to use, provide local display of level, power the transmitter, and can be used for pump alternation. Most Precision Digital products can have up to four relays so two can be used to control the pumps and two can be use for high and low alarm. The pump alternation feature is particularly useful because it extends the life of the pump and reduces maintenance costs. |
Relay #1 turns the main pump on at 6000
gallons and turns it off at 1000 gallons
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With the Pump Alternation feature activated,
the next time the level reaches 6000 gallons,
relay #2 transfers and starts the backup pump.
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If the backup pump is not able to keep up, and the level reaches 7000 gallons, relay #1
transfers and starts the main pump as well
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Relay #3 trips the High Level Alarm at 7500 gallons and resets at 6900 gallons
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Relay #4 trips the Low Level Alarm at 495
gallons and resets at 750 gallons |
AUTOMATIC BATCH CONTROL OPERATION
The valve KEY Legend is as shown:
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Both valves are open to fill the barrel. Meter displays barrel contents.
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Full-flow valve #1 is closed and restricted-flow valve #2
“dribbles” in the remaining 5 gallons. |
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| When the total reaches 55.00, relay 2 trips and closes the restricted-flow valve #2. This automatically causes the total to reset to zero |
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| The full barrel is removed and a new barrel is inserted. The valves are still closed, and the two relays are still in the tripped condition. |
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| After the programmed delay has elapsed, the two relays will reset and the two valves will open. |
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| The new barrel will now begin to fill |
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Notes:
1. The top valve is the full-flow valve
2. The bottom valve is the restricted-flow valve
MANUAL BATCH CONTROL OPERATION
The valve and External Switch KEY Legend is as shown:
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Both valves are open to fill the barrel. Meter displays barrel contents.
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Full-flow valve #1 is closed and restricted-flow valve #2 “dribbles” in the remaining 5 gallons.
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| When the total reaches 55.00, relay 2 trips and closes the restricted-flow valve #2. Display freezes on 55.00 and relays 1 and 2 will not reset until external switch is pushed |
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| Both valves are still closed and a new barrel is positioned. Meter displays previous barrel's contents until external reset button is pushed |
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Operator presses reset switch to reset total. Total goes to zero. Both relays reset causing both valves to open and begin filling the new barrel.
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| Both valves are open to fill the barrel. Meter displays barrel contents. |
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PRIORITY BATCH PROGRAMMING
This feature allows the user to quickly change preset values without going into the main menu. This is accomplished by simply pressing and holding the ENTER button for more than three seconds.
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Program the new Preset Value |
APPLICATIONS
Batch Control with Varying Batch Sizes
To simplify batch control applications with varying batch sizes, use one or more switches to control the relay outputs. The switch allows the operator to disable the process when changing presets in the meter and then enable the process after all the changes have been made and the process is ready to resume. The switch serves as a “Stop/Ready” control.
See application note AN-0001 at www.predig.com.
OPTIONAL FIELD ENCLOSURES
The PD693 can be mounted in a variety of different optional field enclosures. Enclosures are available in plastic, steel, stainless steel, or cast aluminum depending on the process evironment.
NEMA 4X
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PDA2600 Series Stainless Steel Enclosures |
| PDA2400 Series Plastic Enclosures with Clear Cover |
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PDA2700 Series
Painted Steel Enclosures for 4 to 6 Meters |
Explosion-Proof
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PDA2444
Explosion-Proof Enclosure for 1 Meter
or
PDA2446
Explosion-Proof Enclosure for 2 Meters |
INSTALLATION
Dimensions
SPECIFICATIONS
Except where noted all specifications apply to operation at +25°C.
General
Display: 6 digits, 0.56" (14.2 mm) red LED
Rate: -19,999(0) to 29,999(0) with selectable extra zero
Total: 0 to 999,999
Decimal Point: Process/rate: 2.9999, 29.999, 299.99, 2999.9, or extra zero may be turned on 299990. Total: 9.99999, 99.9999, 999.999, 9999.99, 99999.9, 999999.
Multi-Point Linearization: 2 to 11 points
Front Panel: NEMA 4X, IP65; panel gasket provided
Max Display (Peak):Captures the peak process/rate and displays it via the front panel ENTER button
Max Display Indication: Front panel flashing R LED
Non-Volatile Memory: Settings stored for a minimum of 10 years.
Power Options: 115 VAC ±10%, 50/60 Hz, 10 VA; or 22-28 VDC, 6 W maximum; option for PD693 only.
Isolation: 100-240 VAC, 50/60 Hz, 10 W
Required Fuse: UL Recognized, 1 A, 250 V, slow-blow
Isolation: AC powered: 1500 V; DC powered: 500 V
Operating Temperature: 0 to 60°C
Storage Temperature: -40 to 85°C
Relative Humidity: 0 to 90% non-condensing
Enclosure: 1/8 DIN, high impact plastic, UL 94V-0, color: black
Weight: 19.7 oz (559 g) (including options)
Connections: Removable screw terminals accept 12 to 22 AWG
Alarm Points: 4, any combination of high or low alarms
Alarm Status Indication: Front panel LED
Alarm Deadband: 0-100%, user selectable
UL File Number: E160849; 508 Industrial Control Equipment
Warranty: 2 years parts & labor
Extended Warranty: 1 or 2 years, refer to Price List for details.
Pulse Input Specifications
Inputs: Field selectable: Pulse or square wave 0-5 V or 0-12 V @ 30 kHz; TTL; open collector 4.7 kΩ pull-up to 12 V @ 30 kHz; NPN or PNP transistor; switch contact 4.7 kΩpull-up To 12 V @ 40 Hz.
Accuracy: ±0.1% FS
Calibration: May be calibrated using K-factor scaling, internal calibration or by applying an external calibration signal. Field programmable K-factor converts input pulses to rate in engineering units. May be programmed from 0.0001 to 999,999 pulses/unit.
Input Impedance: Pulse input: Greater than 300 kΩ @ 1 kHz.
Open collector/switch input: 4.7 kΩpull-up to 12 V.
Sensor Power Supply: Isolated, field selectable: 12 VDC @ 50 mA to power the sensor or 24 VDC @ 20 mA ±5% for output option. Note: AC powered only.
Filter: Programmable contact debounce filter
Gate: Low gate: 1 to 98 seconds; High gate: 2 to 99.9 seconds
Lockout: Jumper JP2 restricts modification of programmed settings.
Rate/Totalizer/Batch Controller
Rate Display Indication: LED labeled R on right illuminates when meter is displaying rate or process input
Low-Flow Cutoff: Any input below the low-flow cutoff value will result in a display of zero. May be set from 1 count to 100% FS, user selectable. To disable low-flow cutoff, program cutoff value to zero. Totalizer is based on rate display; inputs below the low-flow cutoff value will not affect the totalizer (low-flow cutoff is ignored in PD693 K-factor mode).
Alternating Display: Display may be programmed to alternate between rate and total every 10 seconds.
Total Display: 0 to 999,999
Total Decimal Point: May be set in any of the following positions: 9.99999, 99.9999, 999.999, 9999.99, or 99999.9, 999999. Total decimal point is independent of process/rate decimal point.
Time Base: Seconds, minutes, hours, or days.
Total Conversion Factor: Programmable from 0.00001 to 59999
Totalizer: Calculates total based on rate and field programmable multiplier to display total in engineering units. Total is stored innon-volatile memory.
Totalizer Rollover: Totalizer rolls over when total exceeds 999,999. Relay status reflects the display value.
Totalizer Presets: Up to four, user selectable under Setup menu. Any set point can be assigned to total and may be programmed anywhere in the range of the meter.
Preset Offset: Relays assigned to total can be programmed to trip at any point below the next relay's preset value.
Programmable Delay on Release: If the meter is programmed to reset total to zero automatically when the highest preset is reached, then a delay will occur before the total relays reset. This delay can beprogrammed anywhere between 1 and 999 seconds.
Priority Batch Programming: This feature allows the user to quickly change preset values without going into the main menu by holding the ENTER button for more than 3 seconds.
Total Reset: Via front panel ENTER button, external contact closure, or automatically via user selectable preset value.
Total Reset Lockout: Meter may be programmed so total cannot be reset from the front panel.
The prices for the PD693 have been increased by $50 on October 5, 2009. Click here for alternative products
Products |
| Model |
Description |
Price |
 Blue dot denotes item as a Quick Ship product
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| PD693-2-N |
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Pulse Input Rate/Totalizer/Batcher; No Options; Powered from 24 VDC |
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$409.00 |
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| PD693-2-14 |
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Pulse Input Rate/Totalizer/Batcher; 2 Relays; Powered from 24 VDC |
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$469.00 |
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| PD693-2-15 |
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Pulse Input Rate/Totalizer/Batcher; 4-20 mA Output; Powered from 24 VDC |
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$509.00 |
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| PD693-2-16 |
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Pulse Input Rate/Totalizer/Batcher; 2 Relays + 4-20 mA Output; Powered from 24 VDC |
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$569.00 |
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| PD693-2-17 |
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Pulse Input Rate/Totalizer/Batcher; 4 Relays; Powered from 24 VDC |
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$584.00 |
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| PD693-2-18 |
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Pulse Input Rate/Totalizer/Batcher; 4 Relays + 4-20 mA Output; Powered from 24 VDC |
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$639.00 |
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| PD693-3-N |
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Pulse Input Rate/Totalizer/Batcher; No Options; Powered from 115 VAC |
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$299.00 |
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| PD693-3-14 |
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Pulse Input Rate/Totalizer/Batcher; 2 Relays; Powered from 115 VAC |
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$359.00 |
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| PD693-3-15 |
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Pulse Input Rate/Totalizer/Batcher; 4-20 mA Output; Powered from 115 VAC |
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$399.00 |
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| PD693-3-16 |
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Pulse Input Rate/Totalizer/Batcher; 2 Relays + 4-20 mA; Powered from 115 VAC |
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$459.00 |
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| PD693-3-17 |
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Pulse Input Rate/Totalizer/Batcher; 4 Relays; Powered from 115 VAC |
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$474.00 |
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| PD693-3-18 |
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Pulse Input Rate/Totalizer/Batcher; 4 Relays + 4-20 mA Output; Powered from 115 VAC |
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$529.00 |
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Enclosures |
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| Model |
Description |
Price |
| PDA2407 |
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Plastic NEMA 4X Enclosure for 1 Meter (Any Type) |
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$199.00 |
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| PDA2411 |
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Plastic NEMA 4X Enclosure for 2 Meter (Any Type) |
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$274.00 |
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| PDA2412 |
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Plastic NEMA 4X Enclosure for 3 Type A Meters |
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$304.00 |
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| PDA2414 |
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Plastic NEMA 4X Enclosure for 1 Type D + 1 Type A, B, C or E Meter |
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$274.00 |
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| PDA2415 |
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Plastic NEMA 4X Enclosure for 4 Type A Meters |
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$464.00 |
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| PDA2504 |
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Plastic NEMA 4X Enclosure for 4 Type A, B, C, or E Meters |
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$334.00 |
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| PDA2505 |
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Plastic NEMA 4X Enclosure for 5 Type A, B, C, or E Meters |
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$354.00 |
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| PDA2506 |
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Plastic NEMA 4X Enclosure for 6 Type A, B, C, or E Meters |
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$374.00 |
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| PDA2507 |
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Plastic NEMA 4X Enclosure for 7 Type A, B, C, or E Meters |
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$474.00 |
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| PDA2508 |
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Plastic NEMA 4X Enclosure for 8 Type A, B, C, or E Meters |
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$514.00 |
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| PDA2509 |
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Plastic NEMA 4X Enclosure for 9 Type A, B, C, or E Meters |
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$554.00 |
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| PDA2510 |
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Plastic NEMA 4X Enclosure for 10 Type A, B, C, or E Meters |
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$584.00 |
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| PDA2512 |
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Plastic NEMA 4X Enclosure for 2 Type A, B, C, or E Meters |
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$359.00 |
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| PDA2522 |
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Plastic NEMA 4X Enclosure for 1 Type D + 1 Type C Meter |
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$344.00 |
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| PDA2604 |
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Stainless Steel NEMA 4X Enclosure for 4 Type A,B, C or E Meters |
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$734.00 |
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| PDA2605 |
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Stainless Steel NEMA 4X Enclosure for 5 Type A,B, C or E Meters |
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$784.00 |
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| PDA2606 |
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Stainless Steel NEMA 4X Enclosure for 6 Type A,B, C or E Meters |
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$839.00 |
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| PDA2622 |
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Stainless Steel NEMA 4X Enclosure for 1 Type D + 1 Type C Meter |
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$499.00 |
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| PDA2704 |
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Steel NEMA 4 Enclosure for 4 Type A, B, C, or E Meters |
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$419.00 |
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| PDA2705 |
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Steel NEMA 4 Enclosure for 4 Type A, B, C or E Meters |
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$474.00 |
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| PDA2706 |
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Steel NEMA 4 Enclosure for 5 Type A, B, C or E Meters |
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$524.00 |
|
| PDA2722 |
|
Steel NEMA 4X Enclosure for 1 Type D + 1 Type C Meter |
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$329.00 |
|
| PDA2811 |
|
Low-Cost Plastic NEMA 4X Enclosure for 1 Meter (Type A, B, C or E) |
|
$114.00 |
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| PDA2812 |
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Low-Cost Plastic NEMA 4X Enclosure for 2 Meters (Any type) |
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$159.00 |
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| PDA2821 |
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Low-Cost Plastic NEMA 4X Enclosure for 1 Type D Meter + 1 Type A, B, C or E Meter |
|
$179.00 |
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Accessories
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| Model |
Description |
Price |
| PDX6901 |
|
Suppressor (snubber): 0.01µF/470Ω, |
|
$10.00 |
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DOCUMENTATION
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