Pump controller 704

 

  • Standard measurement ranges​
      from 0 -10 ft. up to 0 - 100 ft. in liquids / sludge.
  • Accuracy​
    ± 1.0 %
  • Enclosure​
    IP 68
  • Output signal​
    4-20 mA,2-wire
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The 704 Pump Controller can be used to control up to 4 pumps or valves between adjustable levels. Functions for control, alarm, indication and flow calculation are selectable. The MJK 704 Level / Pump Controller is a microprocessor based unit used with either an ultrasonic sensor or a hydrostatic transmitter. The 704 Controller is designed to maintain level in tanks and control up to four pumps.Functions for control, alarm, indication and flow calculation are selectable. The 704 Controller can be configured to control speed of, and alternate, variable speed drives.

General Features

  1. Measures and indicates level, numbers of starts, pump run time, calculates capacity and output for each pump and total.
  2. Text display for programming and reading of measurement values with all indications in plain language (English, French, and Spanish).
  3. Direct indication of elevation for use in flood plains or areas where USGS elevations are required.
  4. Standard measurement ranges from 0 -10 ft. up to 0 - 100 ft. in liquids / sludge.
  5. Ultrasonic sensor, hydrostatic pressure transmitter or 4 - 20 mA input.
  6. capacity for the whole pumping station.
  7. English or metric measurement units.
  8. Non-contact measuring method.
  9. No moving parts, no maintenance.
  10. 4 relays for control and alarms.
  11. Lead/lag pump alternation.
  12. Survives immersion down to 30 ft.
 
General Specification
Measuring range Determined by sensor (see below)
Voltage supply

110-120 V AC, power consumption max. 10 W. (24 V AC and 230 V AC options available.)

Temperature range (-20) - 0 to + 150 °F
Input signal From Ultrasonic Sensor, Pressure Transmitter or 4 - 20 mA input signal
Accuracy ≤ ± .25 % of adjusted range
Outputs Analog: 0 - 20 / 4 - 20 mA, max. 500 Ω loop resistance
Digital: 4 x relays with voltage free switching contacts
Max. load: 250 V, 4 A resistive load, max. 100 W inductive load.
Data: RS232 serial port. Uses a Comli driver, consult factory for information.
Dimensions Height 7.28 “, width 9.45 “, depth 4.53 “
Materials & enclosure Polystyrol with transparent lid, NEMA 4X
Approvals UL-cUL listed, file # 194021 UL 508/c22: 2 No. 142-M1987

The 704 Controller is designed to maintain level in tanks and control up to four pumps.

Functions for control, alarm, indication and flow calculation are selectable.

The 704 Controller can be configured to control speed of, and alternate, variable speed drives.