Turner Designs Hydrocarbon Instruments, Inc.

- Model NexTD - Next Generation Oil in Water Monitor

Protecting the environment from unwanted hydrocarbon discharges, protecting sensitive water treatment systems from unwanted oil contamination, and 24/7 monitoring of industrial processes to prevent upsets has been the sole purpose of Turner Designs Hydrocarbon Instruments and its team for more than 20 years. Continuous improvement of field measurement, ease of use, and reliability has led to the development of our NexTD oil in water monitor. It uses a non-purged explosion proof/flame proof enclosure in 316 stainless or aluminum, and is rated to CID1 and CI Zone1. The new generation oil in water monitor grew out of the popularity of our industry standard TD-4100XD E09 powered products and the need to deploy where purge air for explosion protection was not available.

All NexTDs use our popular “E09” firmware package and on-board data logger. See the E09 data sheet for details. They are Ethernet and wireless capable and now are available with more optical choices and configurations for added field flexibility and new applications.

The difficulty in specifying all measurement parameters on new-field applications prior to purchase has meant having to supply the best information available at the time and requiring extended field work during commissioning. With the new NexTD product, all optical systems are “plug and play” with field work during commissioning reduced by over 80%. With Ethernet we can assist from our office, start up and commissioning can be accomplished with technician level assistance.

The NexTD is available with the standard non-contact EZ Access Flow Cell and Bubbletrap with Auto-Valve or the “C” type flow cell for high pressure, clean water applications. Dual-stream sampling is available with separate calibration curves for each sample stream. Clean-in-Place systems for cleaning the complete sample system are available with a variety of configurations. Optional ultrasonic cleaning is available on the C type flow cells.

  • Envelope Dimensions: 22' W x 28' D x 70' H [55.9 cm W x 71.1 cm D x 178 cm H]
  • Weight: 300 lbs 316SS, 224 lbs [Alum136 Kg 316SS, 102 Kg Alum] plus accessories
  • Power Requirements: 90 - 240 VAC, 50/60 Hz +/- 10%, 184 W, 1 ph, (24 VDC Optional)
  • Inlet Connection ½' MNPT (standard) or ½' tube
  • Outlet Connection 1-1/2' MNPT
  • Inlet Sample Flowrate: 2 - 3 US gallons/min [7.5 - 11.5 L/min], optional sample pump
  • Inlet Sample Pressure: 5 - 20 psig [ 34 - 136 kPag ]
  • Outlet Sample Pressure: Atmospheric (standard) or optional sample return pump
  • Sample Temperature: 32 - 190 ˚F [ 0 - 88 ˚C ] standard, higher temperatures optional
  • Ambient Temperature: -29 ˚F to +140 ˚F [-20 ˚C to + 60 ˚C ]
  • Operational Principle: Fluorescence
  • Detection Range: 1ppb - 1000 ppm depending upon target hydrocarbon and water quality
  • Stability: 10 % or better over 6 months
  • Response Time: <10 seconds continuous real - time response
  • Calibration: Multiple-point or un-calibrated linear or non-linear. Holds two calibrations (one for each sample stream).
  • Alarms: Baseline, early warning, high alarm, system-function, local display and audible tone
  • Alarm Outputs: Two user - settable, independently-protected, solid-state AC relay standard or optional dry contact relays
  • Analog Output: 4-20 mA or 0-20 mA, isolated, powered (standard), other protocol options available
  • Diagnostics: System failure reports to relay and local display
  • Security: Two level password protected
  • Electronics Cabinet: 316 stainless steel or aluminum, NEMA 7, I P 66
  • Explosion Proof North America: Class I Division 1, Groups B, C, D, T4; ATEX & IECEx: II 2 G Ex d IIB T4 Tamb -20 °C to +60 °C

ATEX Zone 1 and IECEx explosive atmospheres

Produced Water

  • Overboard discharge compliance and process control
  • Re-injection or water flood water quality control
  • Produced water reuse – RO feed water, steam generator feed water
  • Noncontact cooling water

Heat Exchanger Leak Detection

  • Boiler feed protection
  • Cooling tower protection
  • Open-loop discharge


  • Process water discharge
  • Industrial discharge

Marine Water

  • Drilling and production rig slop tanks/deck drains
  • Bilge water discharge
  • Ballast water discharge

Other Water Types

  • Hydroelectric water
  • Storm water
  • Groundwater
  • Municipal wastewater
  • Potable water

Hydrocarbons Detected

  • BTEX
  • Gasoline
  • Diesel
  • Jet fuel
  • PAH’s (polycyclic aromatic hydrocarbons)
  • Creosol
  • Crude oil
  • Heat transfer fluids
  • Aromatic solvents
  • Aromatic chemicals (styrene, phenol, etc.)
  • Lubricating oils
  • Fuel oil
  • Longwall fluid