DATA SHEET DM231 Series with Modbus RTU Protocol Magnetostrictive Liquid Level Sensor Modbus RTU digital output for total level, interface level, temperature and system diagnostics Accurately Measures: Proven Magnetostrictive Sensing Performance with Field Programmable Span. • Total Level • Interface Level • Temperature - 5 sensors over active range. Easy Installation High Accuracy DM231 Magnetostrictive Liquid & Interface Level Sensor with Temperature outputs Sensors are available in 316SS rigid designs with a choice of Single or Dual NPT mountings. Systems include an explosion-proof condulet housing containing a wiring terminal strip. All systems offer totally welded construction. The DM231 is an Explosion Proof sensor with Modbus digital output (optional analog output converter available) for total level, interface level and temperature sensor outputs. Temperature sensors are evenly distributed over the active length of the rigid 316SS tube. • 0.01% of measured span - less than 1 mm absolute, over full measurement range. Minimal Maintenance • Unique diagnostic output provides float position beyond active range, as well as loss of float(s). Explosion Proof Design • Meets FM approved for Class 1 Div. 1, Zone 1 Explosion Proof hazardous area installations • ATEX and CE Approvals A variety of floats and mounting accessories are available to fit virtually any application. Contact your local representative to match your needs today.

Specifications Technology: • Magnetostrictive Calibration: • None Operating Voltage: • 10 - 30 VDC Output Signal: • Modbus RTU / ASCII • 4-20mA analog (Via Optional Converter) Response Time: • 1.0 Second Temperature Range: • Process: -40°F to 257° F +/-1° F (-40° C to 125° C +/- 0.5° C) • Ambient: -40° F to 185° F (-40°C to 85°C) Pressure Rating: • 316SS tube: 1000 psig. (69 bar) • Float: Dependant, 316SS floats typical to 350 psig, (24 bar) consult factory Resolution: • +/- 0.0001” Repeatability: • +/- 0.0001” Accuracy: • Level: 0.01% or +/- 0.023” (0.06mm) which ever is greater • Temperature:...

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Phone: +1 215-674-1234 • Fax: +1 215-674-2731 E-mail: [email protected] 205 Keith Valley Road | Horsham PA 19044 U.S.A. AMETEK DREXELBROOK www.Drexelbrook.com