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Brand: Swan Analytical
Swan AMI Turbiwell Turbidity Analyzer for Water and Water-Steam Cycles
Description
Contact-free turbidity measurement for potable water, effluents and steam cycles
The Swan AMI Turbiwell measures turbidity in potable water, surface water, effluents and water-steam cycles. It can also serve other liquids whose turbidity correlates with a suspended solid or an emulsified liquid, for example oil in water, using the ppm calculation described in the manual. The measurement is nephelometric: the detector reads light scattered at 90 degrees from a beam that strikes the water surface.
The turbidimeter is non-contact, which avoids fouling of the optical surfaces. The manual lists three models. The AMI Turbiwell 7027 uses an infrared LED according to ISO 7027, the AMI Turbiwell W/LED uses a white-light LED as an approved alternative to US EPA 180.1, and the AMI Turbiwell Power is a steel-panel variant with the infrared LED.
Technical specifications
Values are from the Operator’s Manual A-96.250.511, sections 2 and 2.1.
| Parameter | Specification |
|---|---|
| Measuring range | 0.000-200.0 FNU (7027 and Power); 0.000-100.0 NTU (W/LED) |
| Precision | +/-(0.003 FNU + 1% of reading) |
| Accuracy (formazine) | Range 0-40 FNU: +/-(0.01 FNU + 2% of reading); above 40 FNU: +/-5% of reading |
| Response time | t90 typically 3 minutes; chamber volume 0.75 l |
| Light source | IR LED 860 nm or white-light LED 400-600 nm |
| Calibration | Factory calibrated with formazine; formazine calibration possible in the field |
| Sample flow | About 20-60 l/h (10-15 l/h through the measuring chamber) |
| Sample temperature | 1 to 45 C, no more than 20 C above ambient |
| Inlet / outlet pressure | 1-10 bar with flow controller option / pressure-free |
| Connections | Sample inlet nozzle 10 mm; two 16 mm drains for 15 x 20 mm tubing |
| Power supply | 100-240 VAC (+/-10%), 50/60 Hz, or 10-36 VDC; maximum 35 VA |
| Transmitter | Aluminum, IP 66 / NEMA 4X; -10 to +50 C; backlit LCD 75 x 45 mm |
| Panel (7027, W/LED) | PVC, 400 x 850 x 200 mm, 11.0 kg |
Configurations and options
The 7027 and W/LED models are offered with automatic or manual drain valve, a sample degasser, a deltaT flow sensor, a flow controller option and a version on a small panel with a remote transmitter. That small PVC plate is 400 x 420 mm and weighs 3.5 kg. The Power model has a flow meter as standard and is available with an automatic or manual drain valve.
The sample enters at the inlet, where a constant head gives a constant flow into the measuring chamber and removes air bubbles. Excess sample runs to waste, and the chamber is calm while the LED beam hits the surface. A drain valve empties the chamber for cleaning or verification, and three verification kits (low turbidity, high turbidity and liquid) are available as options.
Choosing the model
Pick the 7027 for ISO 7027 compliance, the W/LED where the white-light method is accepted as an alternative to EPA 180.1, and the Power version for corrosion product trend monitoring in the water-steam cycle on a steel panel. The swan.ch page lists the Turbiwell Power with heated optics to prevent condensation effects.
The LED emission is monitored by an external photodiode and aging losses are compensated automatically. Keep the sample no more than 20 C above ambient to avoid condensation on the optics. State the model, drain valve type, degasser, flow controller and supply when requesting a quotation.
Documents and quotation
The attached Swan Operator’s Manual A-96.250.511 (firmware V6.26 and higher) and the swan.ch product pages are the sources for this page. Seven Star LLC supplies Swan products as an independent supplier in Muscat. Send the model, options and quantity with your enquiry. See other liquid analytical systems.
Datasheets & Documents
- Manual Swan AMI Turbiwell Operator's Manual A-96.250.511 (firmware V6.26 and higher, 2021) Download
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About brand
Swan Analytical Instruments (SWAN Analytische Instrumente AG) is a Swiss manufacturer of online water analysers, founded on 1 January 1991 in Hinwil by a group of engineers, chemists and physicists. It started with swimming pool and sanitary water, then grew quickly in water-steam cycle monitoring for power plants and ultrapure water for semiconductors. Swan is 100 % employee-owned.
Seven Star LLC is an independent supplier in Muscat. We list selected Swan AMI analyzers for power, desalination and water plants in Oman and the GCC.
Swan Analytical company profile
| Founded | 1 January 1991, Hinwil, Switzerland |
|---|---|
| Headquarters | Hinwil, Canton of Zurich, Switzerland |
| Ownership | 100 % employee-owned |
| Main markets | Power plant water-steam cycle, ultrapure water, potable water and pools |
| Product families | AMI online analysers for conductivity, pH, dissolved oxygen, silica, sodium, phosphate, hydrazine, chlorine and turbidity, steam and water analysis systems (SWAS), sample conditioning panels |
Milestones
- 1991: Swan is founded in Hinwil with about 10 people.
- 1997: Swan Systems is set up to supply steam and water sampling and analysis systems.
Swan Analytical product series
Analyzers on this site include the AMI Codes-II colorimetric chlorine analyzer and the AMI Trides amperometric disinfectant analyzer, the AMI Oxytrace trace dissolved oxygen analyzer, the AMI Powercon specific and acid conductivity analyzer, the AMI Silitrace trace silica analyzer, the AMI Soditrace, Sodium A and Sodium P sodium analyzers, the AMI Hydrazine analyzer for oxygen scavenger dosing, the AMI Turbiwell and Turbitrace turbidity analyzers and the AMI LineTOC total organic carbon analyzer.
Some of these models are marked as discontinued by Swan, which lists a newer AMI-II range separately; the product pages say so where it applies.
Where Swan analyzers are used
Feedwater, condensate and steam monitoring in power and desalination plants, demineralised and ultra-pure water systems, drinking water disinfection and pharmaceutical water.
Swan Analytical products we list
Ordering Swan analyzers: what we need
Send the model, measuring range, AC or DC supply, number of sample streams and options. We confirm the model status and configuration against the Swan operator manual before quoting. Reagents and sensor consumables are ordered separately.
Facts checked against Swan company profiles and industry directories, October 2026.
Browse Swan Analytical products by category: Liquid Analytical Systems.
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Frequently Asked Questions
Which models does the AMI Turbiwell manual cover?
The Turbiwell 7027 with an infrared LED, the Turbiwell W/LED with a white-light LED and the Turbiwell Power on a steel panel.
How does it measure turbidity?
It is a non-contact nephelometer. The detector reads light scattered at 90 degrees, so optical surfaces do not touch the sample.
What measuring range does it have?
0.000 to 200.0 FNU for the 7027 and Power versions and 0.000 to 100.0 NTU for the W/LED.
Does it need field calibration?
No. It is factory calibrated with formazine, with LED intensity monitored by a photodiode, though formazine calibration is possible.
Can it measure oil in water?
The manual describes a ppm calculation for liquids whose turbidity correlates with a suspended solid or emulsified oil.
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