PD650, PD655 PD656

Large digit displays

Large Display Process Meters with flow rate, totalizer and batch control capabilities. Each accepts the common process signals such as 4-20 mA, 0-5 VDC, 1-5 VDC and 0-10 VDC and displays these signals in engineering units on a large, high efficiency, 41 D2 digit red LED display. All units also provide two isolated 24V power supplies to drive both the input and output loops. Options include up to 4 relays for alarms or batch controlling, as well as an isolated 4-20 mA transmitter output.

Features

• Two 24 VDC isolated transmitter power supplies
• 115 or 230 VAC field selectable power
• Rate display in units per day, in addition to second, minute and hour
• Programmable set points for latching and non-latching relay operation
• Built-in snubbers on each relay contact
• Any set point programmable for process/rate or total
• Automatic square(1/2), 3/2 & 5/2 root extraction for weirs and flumes

Versatile, Rugged Enclosures

PD650 NEMA 4X

The PD650 is housed in a heavy-duty die-cast aluminum NEMA 4X enclosure. This enclosure can be easily wall-mounted or panel-mounted and features four pre-drilled conduit connections for easy installation.

PD655 NEMA 4X

The PD655 is housed in a rugged, impact-resistant glass-filled polycarbonate, NEMA 4X enclosure. This enclosure has four holes for wall-mounting and a panel mounting kit is available.

PD656 NEMA 4 Explosion-Proof

The PD656 is housed in a rugged, explosion-proof NEMA 4 sand-cast aluminum enclosure. Additionally, the PD656 has two magnetic reed switches located above the ENTER and ACK buttons. The reed switches allow the user to program and operate the meter without having to remove the enclosure cover.

Explosion-Proof Control Stations for the PD656

The explosion-proof control stations can be used to control the PD656 while in operation in a hazardous area. Control stations may be ordered with one, two or three push buttons. The buttons can be labeled ENTER, ACK and RESET. External connections are available at J1 connector on the main PCB.

Large, Bright, High Efficiency Red LEDs

The large, bright, high efficiency red LED display of these new Large Display Process Meters is designed to make it easy to read these displays from far away in a dimly lit process plant.

The PD650’s 2.3" high display, PD655’s 1.0" high display and PD656’s 0.8" high display are expanded 41 D2 digit plus selectable extra zero displays, excellent for displaying large numbers in easy-to-read formats. Most 41 D2 digit meters display process/rate only to 19,999. These large,bright displays provide an expanded process/rate range to handle numbers to 29,999; and to 299,990 with the extra zero.

Each meter also has a full six digit display for displaying total from 0 to 999,999. Additionally an operator can easily toggle back and forth between rate and total, automatically or manually. When the meter is displaying rate a green LED ® illuminates to indicate rate function.

Simplify Loops with Two 24 V Supplies

The PD650, PD655 and PD656 are ideal for loops that consist of a transmitter, a digital panel meter and a DCS or computer because they can provide isolated power to drive both the input and output loops.

This standard feature saves time and money by simplifying wiring and eliminating the cost of an external power supply. In addition, the isolated power supply can be used to power 3 and 4 wire transducers with either current or voltage output.

Universal Process Inputs & Linearization

The PD650, PD655 and PD656 accept both voltage and current inputs and can be scaled for virtually any engineering units.

In addition, the units feature automatic linearization for square root, three-halves and five-halves power functions for direct readout of flow from DP transmitters, weirs and flumes.

The user can also select a low-flow cutoff point so the meters always display zero below this point. For other non-linear applications, the PD650, PD655 and PD656 provide up to 11 custom calibration points.

Peak Hold

The peak hold feature captures the highest displayed value and stores it in memory for later viewing. Push ENTER when meter reads dSPy P. A green LED labeled "R" will flash indicating the display is showing the peak value. To erase the current peak value press ENTER when meter reads rSEt P and a new peak value will be captured.

Menu-title disabling and Lockout capabilities

Each unit can be programmed so certain menu titles do not appear during the normal menu scan sequence and so operators are "locked out" from making changes to the way the meter was programmed. For instance, if the PD650 was to be used as a temperature display, the user may want to disable all the menu titles relating to the totalization feature. Or the user may want to restrict the ability to change programming values like calibration points, relay set points and 4-20 mA output set points.

Totalizer Features

Each unit is supplied with all the features and functions needed to perform flow totalizing and simple automatic or manual batching. Totalizing features include a full 6 digit display, programmable time base of second, minute, hour and day; user programmable totalizer conversion factor and automatic or manual alternating rate/total display. Batching features include preset value tracking, priority batch programming, relay delay and multiple totalizer reset capabilities. Combine these features with the general capabilities of easy scaling in any engineering units, powering the transmitter, low-flow cutoff, and handling non-linear flow signals and you’ve got one of the most powerful flow totalizer/batch controllers on the market.

Programmable totalizer Conversion factor

The Totalizer Conversion Factor is a number which is multiplied by the rate to compute the total. This factor can be any number between .59999 and 59999. For example, if the rate display is gallons per hour and total is desired in barrels, (1 gallon = .02381 barrels) a total conversion factor of .02381 should be used. If the rate display is gallons per hour and total is desired in gallons, a factor of 1 should be used.

Programmable time base

Rate can be displayed in any engineering units per second, minute, hour or day.

Alternating Rate/Total Display

The Totalizer can be programmed so the display automatically changes between displaying rate and total every 10 seconds. This function is particularly useful if the unit is mounted out of reach, high on a wall.

Relays and 4-20 MA Output Options

The relay capabilities of the these meters expand their usefulness beyond simple indication to provide users with alarming and controlling functions. These capabilities include front panel alarm status LEDs and 2 or 4 optional relays. Any relay can be assigned to either total or process/rate. Typical applications include high or low temperature, level, pressure or flow alarms, simple control applications like sump-pump or tank-filling and automatic or manual batch controlling.

Front Panel LEDs

Wall and Panel Mounting

PD650 Wall Mounting

There are four mounting holes on the rear of the enclosure that are used to mount the instrument to a wall. The dimensions for the mounting holes are shown in the following figure.

PD650 Panel Mounting Kit - PDA6504

PD655 Wall Mounting

There are four mounting holes on the rear of the enclosure that are used to mount the instrument to a wall. The dimensions for the mounting holes are shown in the following figure.

PD655 Panel Mounting Kit - PDA6554

PD656 Wall Mounting

The enclosure contains two 3 D4" NPT conduit holes located at opposite sides. The electronics inside the enclosure can be rotated 90° in any direction allowing the enclosure to receive vertical or horizontal conduit entry.

Specifications

PD650 NEMA 4X 2.3" High Red LED

DISPLAY: 2.3" (58.4 mm) high efficiency red LED, six digit, -19,999(0) to 29,999(0) with selectable extra zero. Total: 0 to 999,999. Automatic lead zero blanking.
ENCLOSURE: Die-cast Aluminum, NEMA 4X, modified specifically for PDC; four holes for 1/2" conduit provided at base, 3 plugs provided.
MOUNTING: Enclosure contains four 1/4" holes for wall-mounting. Panel mounting kit available.
OVERALL DIMENSIONS: 125 x 362 x 81 mm (4.9 x 14.3 x 3.2 in.).
WEIGHT: 7.0 Lbs. (3.2 Kg.).

PD655 NEMA 4X 1.0" High Red LED

DISPLAY: 1.0" (25.4mm) high efficiency red LED, six digit,-19,999(0) to 29,999(0) with selectable extra zero. Total: 0 to 999,999. Automatic lead zero blanking.
ENCLOSURE: Impact-resistant glass-filled polycarbonate, NEMA 4X, modified specifically for PDC; two holes for 1 D2" conduit provided at base.
MOUNTING: Enclosure contains four holes for wall-mounting. Panel mounting kit available.
OVERALL DIMENSIONS: 170 x 140 x 95 mm (6.7 x 5.5 x 3.7 in.).
WEIGHT: 3.8 Lbs. (1.73 Kg.).

PD656 Explosion-Proof 0.8" High Red LED

DISPLAY: 0.8" (20.3mm) high efficiency red LED, six digit, -19,999(0) to 29,999(0) with selectable extra zero. Total: 0 to 999,999. Automatic lead zero blanking.
ENCLOSURE: Explosion-proof sand-cast Aluminum, NEMA 3, 4, 7, 9. For use in hazardous locations Class I Groups C & D, Class II Groups E, F & G. Two 3 D4" NPT holes provided at opposite sides. Up to four holes can be provided for an additional charge.
MOUNTING: Enclosure contains four 7/16" holes for wall-mounting
OVERALL DIMENSIONS: 203 x 203 x 145 mm (8.0 x 8.0 x 5.7 in.).
WEIGHT: 14.6 Lbs. (6.6 Kg.).

Basic Meter Specifications for All Units

INPUTS:Field selectable: 4-20 mA, 0-20 mA, 0-5 V, 1-5 V, 0-10 V.
DECIMAL POINT: Process/rate display: Decimal point may be placed in any of the following positions. 2.9999, 29.999, 299.99, 2999.9 or 299990. Total decimal point: 9.99999, 99.9999, 999.999, 9999.99, 99999.9. Rate and total decimal points are independent of each other.
CALIBRATION RANGE: 4 mA (1 V) input may be set anywhere in range of the meter. 20 mA (5 V) 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:

INPUT IMPEDANCE: Voltage ranges, greater than 300 Kohms; current ranges, 100 ohms.
LOOP POWER: Two isolated power supplies, 24 VDC ± 5% @ 20 mA each, regulated. Maximum loop resistance is 1200 ohms.
LINEAR INPUT ACCURACY: ±0.05% of calibrated span, ±1 count.
ROOT EXTRACTION ACCURACY: ±0.1% F.S. ± 2 counts.
11 POINT LINEARIZATION:

e.g. Minimum span for an 11-point, 4-20 mA calibration is 0.16 mA between inputs.
ALARM POINTS: Four, any combination of high or low alarms.
ALARM POINT DEADBAND: 0-100% of full scale, user selectable.
ALARM STATUS INDICATION: Front panel LED.
PEAK HOLD (DISPLAY PEAK): Captures the peak process/rate and displays it via the front panel ENTER button. (Dspy p)
PEAK HOLD INDICATION: Front panel flashing "R" LED.
LOCKOUT: Jumper JP1 labeled "LOCK" restricts modification of calibration values.
NON-VOLATILE MEMORY: All programming values are stored in non-volatile memory for a minimum of ten years if power is lost.
NORMAL MODE REJECTION: 64 db. at 60 Hz.
POWER: AC power, 115 or 230 VAC (field select) ±10%, 50/60 Hz, 12 VA. DC Power, 22-28 VDC; 12 watts maximum.
ENVIRONMENTAL: Operating temperature range: 0 to +65°C. Storage temperature range: -40 to +85°C. Relative humidity: 0 to 90% non-condensing.
CONNECTIONS: Removable screw terminal blocks (provided), accept 22 to 12 AWG wire.

Rate/Totalizer/Batch Controller Features

RATE DISPLAY INDICATION: LED labeled "R" in lower 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% F.S., user selectable. To disable low flow cutoff, program cutoff value to zero. Totalizer is based on rate display. So, inputs below the low flow cutoff value will not affect the totalizer.
ALTERNATING DISPLAY: Display may be programmed to alternate between rate and total every 10 seconds.
TOTAL DISPLAY: 0 to 999,999, automatic lead zero blanking.
TOTAL DECIMAL POINT: May be set in any of the following positions: 9.99999, 99.9999, 999.999, 9999.99, 99999.9. Total decimal point is independent of process/rate decimal point.
TOTALIZER: Calculates total based on rate and field programmable multiplier to display total in any engineering unit.
TOTALIZER ROLLOVER: Totalizer "rolls over" when display exceeds 999,999. Relay status reflects display.
TOTALIZER PRESETS: Up to four, user selectable under Setup. Any set point can be assigned to total and may be programmed anywhere in the range of the meter. Relays assigned to total trip when total reaches the preset value and reset when total is reset to zero or when acknowledged manually. can be programmed so when the highest preset value is reached the total automatically resets to zero. In addition, a programmable delay on release of between 1 and 999 seconds can be programmed to reset the total relays after the delay has elapsed.
PRESET OFFSET: Relays that are assigned to total can be programmed to trip at any point below the next relay’s preset value. If preset offset mode is selected the corresponding relay will always trip at a programmed offset value before the next relay trips.
Example: Set Point 1 and 2 are setup for total, with Offset selected (under Set Point 2). If the preset offset is set at 10, (during Set Points programming for Set Point 1), then relay 1 will trip 10 counts before relay 2.
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 be programmed 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 can not be reset from front panel.

Options

Relays

RATING: 2 or 4 SPDT (form C); rated 2 Amp @ 30 VDC or 2 Amp @ 250 VAC resistive load; 1/14 HP @ 125 / 250 VAC for inductive loads. Built-in suppression.
ASSIGN TO PROCESS/RATE OR TOTAL: Any relay may be assigned to process/rate or total.
BUILT-IN SUPPRESSION: Each relay contact is protected by a built-in suppressor (snubber) to prolong the life of the relays and provide a degree of protection against electrical noise caused by inductive loads. Suppressors value, .01 uF/470 ohms, 250 VAC.
DEADBAND: 0-100% of full scale, user selectable.
HIGH OR LOW ALARM: User may program any alarm for a high or low trip point.
RELAY OPERATION: Latching or non-latching.
FAIL-SAFE OPERATION: Relay coils are energized in non-alarm condition. In case of power failure, relays will go to alarm state. Fail-safe operation may be disabled, by removing jumper J5 located on the Options PCB.
AUTO INITIALIZATION:When power is applied, relays assigned to total will reflect the state of the accumulated Total value in memory. Relays assigned to process/rate will reflect the state of the input to the meter.

Total relays reset:

1. When total is reset to zero, if setup for external total reset.
2. After delay has elapsed, if setup for internal total reset.
3. Manual any time, if setup for external total reset. Manual reset resets all manually resetable relays.

Process/rate relays reset:

Relays assigned to process/rate may be programmed to reset in any of the following ways:

1. Automatic reset when the input passes the reset point.
2. Manual reset at any time (via user supplied external contact closure at terminals AK and CM or front panel ACK button.) Manual reset resets all manually resetable relays.
3. Automatic plus manual reset at any time. Relays will automatically reset when input passes the reset point. Relays can also be manually reset at any time (via user supplied external contact closure at terminals AK and CM or front panel ACK button.) Manual reset resets all manually resetable relays.
4. Manual reset only after alarm condition corrected. Relays can be manually reset only after alarm condition has been corrected (via user supplied external contact closure at terminals AK and CM or front panel ACK button.) Manual reset resets all manually resetable relays.

Isolated 4-20 mA Transmitter Output

CALIBRATION RANGE: The transmitter output can be calibrated so that a 4 mA output is produced for any process/rate measured by the meter. The 20 mA output may correspond to any process/rate that is at least 501 counts greater or smaller than the process/rate corresponding to 4 mA. (Ex. 4 mA = 0, 20 mA = 501) If the span between 4 and 20 mA is less than 501 counts, an error message will appear.
EQUIPMENT NEEDED: The 4-20 mA output is calibrated without the use of a calibrator.
OUTPUT LOOP-POWER: 24 VDC ± 5% @ 20 mA, regulated. Maximum loop resistance is 1200 ohm. Isolated from input loop-power.
ACCURACY: ± 0.1% F.S., ± 0.004 mA.
ISOLATION: 500 VDC or peak AC, input-to-output or input/output-to-power line.
EXTERNAL LOOP-POWER SUPPLY: 35 VDC max.

OUTPUT LOOP RESISTANCE:

MODEL PD650 NEMA 4X 2.3" HIGH RED LED

MODEL PD655 NEMA 4X 1.0" HIGH RED LED

MODEL PD656 EXPLOSION PROOF 0.8" HIGH RED LED

Prices subject to change.

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