Transcript MultiTrode
23 Years in the Industry Over 1000 End-Users Specify MultiTrode MultiTrode - Company • • • • Specialists in level sensing and control for pump stations USA, UK and Australia 23 years in this market Corporate offices – – – Boca Raton, FL Bristol, UK Brisbane, Australia • Supply products to 15 countries through our own sales team or value-added reps & distributors Conductive Level Probes • Reduces maintenance costs • No more false readings or burnt-out pumps • Simple to install and guaranteed for 10 years • Cuts the risk of spills Two Basic Types • Multiple measurement points for primary level control – 10-sensor probe most common • Single point for back-up control The Probe – how does it work? • No electronics or moving parts in the wetwell • The control or monitoring device in the wetwell: • • applies 10v a.c. to each “sensor” looks for current flowing to ground • With 10 sensors we get 10% resolution of level • Works in spite of fats, oils and grease (FOG) Fat and Grease This probe was installed in a wastewater pit 10 years ago, without being cleaned. The probe still works reliably today. Over 100,000 pump stations installed with probes. Examples Extreme Foam Heavy Sludge Fat and Grease MultiTrode Probe - Installation • Mount near the inflow (turbulence keeps it cleaner) • Install bottom of probe a little above the snore point of the pump • Ensure 12 inches of clearance around the probe MultiTrode Probe - Installation • Single sensor example - for single pump start/stop application • Mounting bracket not included with single sensor probes • The extended bracket is shown here Probe comparisons • Compared with other level devices, the probe is simpler and more reliable – – – – Ultrasonics are complex and hard to troubleshoot Pressure transducers fail and need cleaning Ball floats need constant cleaning Bubblers have mechanical parts Ultrasonic transducer Hydrostatic pressure transducer MultiTrode probe Ball floats Floats / transducer replacement • MTIC – – – – Works with a 10-sensor probe 10 relay outputs (corresponding to level) 4-20mA output (stepped) Level indication • How is control done? – MTIC connects into the existing control system – Can be used for simple control but has no pump logic, no alternation, etc Duplex pump control • MTDPC – Works with a 10-sensor probe – Operator interace with level indication, manual/off/auto control, pump fault and level alarm reset – Alternation or fixed lead/lag – Setpoint adjustment via keypad • How is control done? – MTDPC is the control system – Replaces relay logic or PLC – Replaces switches, lights, push buttons Single pump control • MTR and MTRA – MTR works with 2 single-sensor probes – MTRA works with 2 or 3 single sensor probes – Simple but effective & economic and always ultra-reliable • How is control done? – ON/OFF from the 2 sensors – With MTRA, alarm from a 3rd sensor, or level stays above ON sensor – MTR can do “pump up” or “pump down” – MTRA is “pump down” only Level alarm relay • SafeSmart, Safe-FS – Works with failsafe single-sensor probe – Two Relay outputs – level alarm and probe fail • How does the failsafe probe work? – Two wires connected to the same sensor – Checks for continuity every 10 seconds SafeSmart Backup controller • Safe-TL & Safe-FSP – Works with failsafe 3-sensor probe (ON, OFF, ALARM) – Provides a backup control system for 1 pump in any wastewater pump station – Or primary single pump control • How does the unit work? – Level from backup probe – Manual/hand input – Won’t run pump if it’s too hot Comparison - SafeSmart controllers & MTR SAFETL SAFEFSP One pump control + alarm X X Thermal fault input inhibits pump (including thermal FLS from Flygt pumps) X X Seal fault input inhibits pump X Manual (hand) input X Keypad for inner door X Works with failsafe probe input X Relay output when loss of probe MTR A Comments X Stops pump running when too hot Potential miniCAS replacement X Allows over-ride which can be inhibited on pump thermal fault X LED indication for loss of probe X Control or telemetry system can discriminate between high level and loss of probe Conclusion • The MultiTrode probe is the best solution for wastewater level measurement – Simple, reliable and low maintenance • • • • • MTIC – float or transducer replacement MTDPC – duplex pump controller MTR / MTRA – single pump control Safe-FS – failsafe high level alarm Safe-FSP & Safe-TL – backup pump controller (single pump)