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PDS-360 ULTRASONIC OPEN-CHANNEL FLOWMETER
The PDS-360 Ultrasonic Open-Channel Flowmeter is a highly accurate, non-contacting liquid flow measuring device. The system monitors flows non-intrusively through any standard primary flow device using sophisticated ultrasonic ECHO ranging techniques. The sensor is supported above the liquid flow surface in the primary device and is microprocessor controlled providing accurate, instantaneous flow rates with totalized volume flow and proportional analog flow rate signals (4-20 mA).
The PDS-360 system includes an extensive time-stamped data logging with a 200 day, 24 hour flow summary report providing date, time, min, max and average GPM flows with daily totals. The 200 daily flow totals can be viewed at the flowmeter or printed directly to a serial printer. All datalog, including the 24 hour summary, time stamped average flow rate and time stamped Event list can be downloaded to a PC or laptop directly or by MODEM using the RS-232 output. Any standard communication software package such as Microsofts Hyper Terminal may be used to receive the data and save it to file. No need to purchase and learn new software. The PDS-360 also provides one (1) programmable pulse output for a Sampler or remote counter, four (4) control relays and two (2) 4-20mA outputs. Model PDS-360DX system has the same features less Relay Outputs, RS-232 Output and Data Logging.
Precise flow depth measurements are continuously made under processor control. Ultrasonic sound pulses are transmitted from the sensor and elapsed time of echo return is accurately measured. This information is converted to a depth-of-flow and is applied to the respective equation for the primary flow device selected. The built-in equations or user defined equation produce a flow rate in PERCENT of scale, GPM, MGD, DEPTH in inches or feet along with temperature indication, totalized flow volume and data logging.
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PDS-360 Ultrasonic Open-Channel Flowmeter
Electronic Specifications
| Electronics |
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| Power Requirements: |
120/200 VAC, +/- 15%, 50/60 Hz, 12-24 VDC @ 15W max |
| Temperature: |
25° to 125° (-5° with optional heater)
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| Display: |
2 line x 20 character, Alphanumeric, LCD with LED backlighting |
| Totalizer (counter): |
One, 8 digit accumlative with programmable multiplier of x1, x10, x100, x1000. 200 daily time stamped 8 digit totalizer (data logg) |
| Outputs: |
Two (2) independent 4-20 mA isolated into 1000 ohm max. RS-232 (MODEM opt); Four (4) control relay outputs; One (1) Programmable Pulse (250ms. duration) relay output; relays rated SPDT 5A/250 VAC |
| Span Range: |
0-1.00" to 0-150.00" full scale |
| Dead Bands (blanking): |
Automatic 12" to 36" |
| Resolution: |
0.01", 0.01 GAL/MIN |
| Accuracy*: |
+/- 0.5% of range or better. Calculated error than +/- 0.04% |
| Memory: |
Flash and non-volatile RAM |
| Flow Equations: |
Parshall, Palmer/Bowlus, Leopold-Lagco, Rectangular Weirs with and without end contractions, V-notch Weirs, User defined, 20 point look up table |
| Data Log: |
200 day flow summary: min, max, avg GPM and total gallons; time stamped avg GPM flow rate with programmable log rate of 00-99 minutes in 1 minute increments; time stamped EVENT list to record flowmeter actions. |
| Download: |
Directly to serial printer (24 hour summary only); All data directly to PC/Laptop through COM port or Modem. All data is preformatted. |
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*field conditions, such as turbulance etc., may effect the apparent accuracy |
PDS-360 Ultrasonic Open-Channel Flowmeter
Sensor & Enclosure Specifications
| Sensor |
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| Exposed Material: |
PVC Housing, Epoxy |
| Beam Pattern: |
5° Conical (2.5° from centerline)
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| Temperature: |
-40°F to 160°F |
| Cable: |
20 Foot corrosion resistant, 1500 ft max., 2 twisted pair shielded, Belden #8723, Mx 50 Volts pulsed applied |
| Dimensions: |
3.0" dia x 2.5" len. |
| Mounting: |
3/4" NPT female |
| Temp Probe: |
Built into sensor head, +/- 2.0° in 1° increments |
| Enclosure |
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| Material: |
Fiberglass with clear hinged Polycarbonate cover |
| Rating: |
NEMA 4X, IP65, Water-tight, Dust-tight and Corrosion-resistant - CSA UL listed |
| Dimensions: |
7.2" x 11.8" x 6.8" |
| Mounting: |
4.92" x 12.3" with stainless steel mounting feet |
Options
Heater/Thermostat, PVC Sensor Mounting Bracket, Sensor Cable, Serial Printer, Modem, External Temperature Probe
Warranty
Systems are pre-tested and quality control inspected before shipping. Warranty is against defects in parts and workmanship for a period of one (1) year.
Specifications and design subject to change without notice.
Note: PDS-360X does not have Relay Outputs, Data Logging and RS-232 output.
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