Delta Mobrey MSM400 Ultrasonic Solids Monitoring and Control System

Delta Mobrey MSM400 Ultrasonic Solids Monitoring and Control System continuously monitors the suspended solids or sludge density contained in, or flowing from, a clarifier or settlement tank during de-sludging. continuously monitors the suspended solids or sludge density contained in, or flowing from, a clarifier or settlement tank during de-sludging. To run at your full potential and maximize process control, you need reliable instrumentation throughout your facility.

Many years of practical experience have shown that measurement of ultrasonic attenuation in a slurry is directly proportional to the percentage of suspended solids.The MSM400 system uses this principle to produce a digital display of the suspended solids measurement.

Delta Mobrey MSM400 Features:

Control unit

  • Bright local display of the measured value and statuses
  • 4–20 mA / HART output signal of measured value
  • Two SPDT (single-pole-double-throw) relays for control and alarm indication purposes
  • A digital trigger input can perform various control actions
  • Comes complete with a range of user-selectable calibration settings for simple initial set-up, but can also be calibrated against samples analyzed for % solids in a laboratory
  • Provides the automatic control sequence to start a pump or control a valve for sludge or settled product removal
  • Local programming of the control unit is supported using the integral keypad and an easy to navigate menu structure
  • Remote programming and monitoring is supported using a Field Communicator or a smart wireless THUM™ adapter
  • Auto-selection of AC or DC power supply, allowing back-up if one power supply fails

Intrinsically safe sensors:

  • Dual-operating-frequency gap sensors, 1 MHz or 3.3 MHz

Another Article:

Delta Mobrey MSM400 Specification:

Product: Mobrey MSM400 control unit

  • Physical:

Mounting style

  • Wall mount (brackets included)
  • Six mounting holes, 0.2 in. (5 mm) diameter

Display: Integral 32 x 122 pixels LCD with backlight, providing up to four lines of characters

Keypad: Integral membrane keypad with six buttons for menu system navigation and configuring the application

Conduit/cable entries

  • Six conduit/cable entry positions, pre-drilled at bottom of the enclosure
  • Supplied with three M20 glands and three M16 glands Dimensions

Construction materials

  • ABS enclosure with clear polycarbonate lid
  • 304-grade stainless steel cover-fixing screws
  • UV resistant polycarbonate membrane keypad
  • Nylon cable glands and blanking/stopping plugs

 

  • Electrical:

General

  • Cage clamp terminal blocks in separate compartment
  • Maximum wire size is 2.5 mm2 (12 AWG)

Power supply input connections

  • Alternating Current (AC) mains and Direct Current (DC) terminal connections on each control unit for external supply
  • Auto-selection of AC or DC supply, allowing back-up if one power supply fails

AC power supply requirements:

  • 115 or 230 Vac ±15% (switch selectable)
  • Power consumption: 10 VA nominal
  • Fuse (F1): 200 mA (T), 5×20 mm, 240 V

DC power supply requirements:

  • 15 to 30 Vdc, 24 Vdc nominal
  • Power consumption: 6 W nominal

Sensor input connections

  • Captive screw terminal block for 1 x ultrasonic gap sensor
  • 1 MHz or 3.3 MHz operating frequency auto-selection

Digital input connections

  • Accepts two 5 Vdc trigger input signals
  • 5 Vdc provided by control unit

Other input connections

  • Field communicator connection points
  • Current output connections
  • Nominal signal range 4–20 mA (default) or 0–20 mA, software selectable
  • Full output range (linear): 3.8 to 20.5 mA
  • Load: maximum resistance is 1 K Ohm at 22 mA
  • Maximum applied voltage: 48 Vdc
  • Isolated from other terminals to 500 Vdc
  • Update rate (software): 10 times every second

Relay output connections: Two SPDT (single-pole-double-throw) relays, rated 5 A at 240 Vac resistive

  • Environment:

Ambient temperature: –22 to 131 °F (–30 to 55 °C)

Relative humidity: 95%

Enclosure rating: P65 indoor and outdoor

Download Data Sheet: ultrasonic solid monitoring control system

Ref: delta-mobrey.com

Share