Turner Designs TD-4100/XD Oil in Water Monitor 4100906

Turner Designs TD-4100/XD On-Line Oil in Water Monitor (MPN: 4100906)

The Turner Designs TD-4100/XD (Part Number / MPN: 4100906) is a continuous, non-contact optical ultraviolet (UV) fluorescence monitor engineered for real-time hydrocarbon-in-water detection. Specifically packaged with the 4100906 Mixed Fuel Optics Kit (Gasoline, Jet Fuel, Diesel, Lube Oils, and Synthetic/Mineral Hydraulic Oils), this heavy-duty skid/wall-mountable analyzer delivers continuous, un-attenuated measurement across low parts-per-billion (ppb) to high parts-per-million (ppm) concentration regimes.

The TD-4100/XD integrates a proprietary falling-stream (non-contact) optical flow chamber. The process liquid flows freely under gravity without contacting optical sight glasses or flow windows, eliminating optical coating from heavy hydrocarbons, particulate blinding, and maintenance shutdowns. The integrated E09 Electronics Platform houses precision photomultiplier tube (PMT) detection circuitry, galvanic isolated signal pathways, and extensive field diagnostics rated for extreme offshore, marine machinery space, and refinery deployments.

Model Details:

• Core Platform (TD-4100XD): The standard open-stream hazardous location analyzer base unit consisting of a 316 SS dual-compartment enclosure, an E09 processing core, and optical bench mounts.
• Kit Optics Configuration (4100906): Configured factory optical filter and excitation array specifically selected for broad-spectrum hydrocarbons. It is tuned to target polycyclic aromatic hydrocarbon ring structures typical of:
  • Distillate marine fuels (MGO, MDO)
  • Heavy residual fuels (HFO, LSFO, VLSFO)
  • Jet A / JP-8 aviation kerosene
  • Automotive and turbine gasolines
  • Heavy circulating lubrication oils
  • Mineral and synthetic ester hydraulic fluids

Technical Specifications

Features

1. Non-Contact Falling-Stream Optical Architecture: Process fluid falls under controlled laminar gravity through an open detection zone, preventing oily film adhesion, scale buildup, and suspended solid fouling on optical lenses.
2. Application-Specific Narrowband Fluorescence (Optics Kit 4100906): Tuned optical filters selectively excite aromatic polycyclic hydrocarbons (PAHs) while rejecting turbidity, silt, bio-fouling, and non-hydrocarbon suspended solids.
3. Robust Hazardous-Area Deployment: Heavy-gauge 316 stainless steel enclosure rated NEMA 4X / IP66, certified for Class I, Division 1 / Division 2, and ATEX/IECEx Zone 1 / Zone 2 hazardous atmospheres.
4. Advanced E09 User Interface & Control: Field-accessible external 316SS magnetic/push-button keypad, back-lit graphic display, multi-point calibration tables, internal data logger, and multi-relay alarm logic.
5. Turnkey Process Automation & Control: Features dual isolated 4–20 mA outputs (loop or instrument-powered), high-speed dry-contact alarm/divert relays, and direct SCADA/DCS integration via Modbus and Ethernet.

Compatibility

• Oily Water Separator (OWS) Discharges: Direct integration as a 15 ppm / 5 ppm overboard discharge monitor interfacing with standard 3-way diversion dump valves and engine room bilge automation.
• Marine Scrubbers & Ballast Water Systems: Compatible with Exhaust Gas Cleaning System (EGCS) washwater discharge loops and Ballast Water Treatment System (BWTS) de-ballast monitoring.
• Offshore Produced Water Treatment: Interfaces with hydrocyclone reject streams, induced gas flotation (IGF) units, and media polishing filtration skids.
• Steam Condensate & Cooling Water Loops: Direct coupling to main shell-and-tube surface condensers, marine auxiliary boilers, and industrial cooling towers for rapid lube/fuel heat exchanger rupture warning.
• DCS / AMS Interfacing: Compatible with major marine automation platforms including Kongsberg K-Chief, Wärtsilä Nacos Platinum, Siemens S7/PCS7, Emerson DeltaV, and Yokogawa CENTUM.

Applications

• Overboard Discharge Monitoring (MARPOL Annex I): Engine room bilge oily water separator (OWS) monitoring with automated overboard diverter control at the 15 ppm limit.
• Offshore Produced Water & Slop Tanks: Rig deck drain tracking, FPSO produced water discharge, and re-injection water flood quality verification.
• Condensate & Boiler Feed Protection: Continuous detection of trace fuel oil or lube oil ingress into steam generator loops, saving boiler tubes from baking and thermal blistering.
• Heat Exchanger Integrity Verification: Monitoring cooling water returns from marine diesel engine lube oil coolers, shaft bearing jackets, and hydraulic bulk plant systems.
• Industrial & Refinery Effluent Control: Stormwater run-off ponds, desalter effluent tracking, and cooling tower basin blowdown lines.

Frequently Asked Questions

What differentiates the TD-4100XD from the TD-4100XDC model?

The TD-4100XD features a non-contact falling stream flow cell where the sample flows freely through an open path, making it ideal for dirty, high-solids, or fouling-prone fluids. The TD-4100XDC is a closed-cell variant that contains the sample under line pressure inside a clear tube, designed specifically for clean water or closed steam condensate loops where atmospheric return is not permitted.

Can this instrument distinguish between diesel, lube oil, and crude oil?

The TD-4100/XD with the 4100906 Optics Kit detects polycyclic aromatic hydrocarbons present across all mineral-based fuels and lubricants. It provides a composite reading calibrated to a specific target hydrocarbon profile. If your process handles multiple fluctuating oil types, calibrate the baseline against the least fluorescent target compound to ensure safety thresholds are maintained across all operating conditions.

Does particulate matter or water turbidity cause false high oil alarms?

No. Because the optical excitation and emission filters are precisely tuned to the UV fluorescence spectrum of aromatic rings, non-fluorescing solids such as silt, sand, iron oxide scale, and bio-matter do not fluoresce at those wavelengths. This eliminates the false tripping common to turbidimetric and light-scatter sensors.

What routine maintenance is required on the optical bench?

Thanks to the non-contact falling stream cell, there are no glass windows exposed to the flowing sample, eliminating the primary source of fouling. Routine maintenance consists of periodic inspection of the falling stream weir, verifying sample inlet flow rates, and running a quick clean-water baseline calibration check once every 3 to 6 months.