Sigrist

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Sigrist-Photometer of Switzerland, has been developing, manufacturing and marketing the highest quality optical measuring instruments for water treatment, food & beverage processes and many more industrial processes since 1946.

Below you will discover instruments based on turbidity scatter and absorption, colour and UV wavelengths, fluorescence and bacteriology that offer innovate solutions with an emphasis in low maintenance and ease of use.

AquaScat 2

AquaScat 2

The AquaScat measures turbidity of potable, recycled and  raw water according to IEC 27027 using 90° scattered light detection in a non-contact, free-falling water stream. This contactless design eliminates window fouling and eliminates the need for regular maintenance (other than an annual filter change).

Calibration is performed either automatically (AquaScat WTMA) or manually (AquaScat TWM or HT) with a calibration checking unit specific to that instrument.

With a range of 0-4,000NTU, the AquaScat is sensitive enough to be used for post-filtration potable water to a heavy rain event raw water. There are 8 pre-set 4-20mA measuring ranges in the AquaScat, but any of these can be easily modified to suit your specific purpose (see the AquaScat video on setting your own measuring range).

Sirel Ex

AquaScat S

The AquaScat measures the turbidity of potable water according to IEC 27027, with the measurement carried out through multiple process connection options such as immersion tube, in pipe (metal or PE), in vessel. There is also a retractable option which allows the AquaScat S to be withdrawn for CIP and maintenance.

Calibration is done with a checking unit that has no consumables which enable the operator to return the instrument calibration to factory calibration.

 

 

AquaMaster

AquaMaster

AquaMaster is a compact multi-parameter measuring system providing critical information on: turbidity, pH, conductivity, Redox, dissolved oxygen and temperature. The “brains” of the AquaMaster system is the AquaScat, with the colour touch screen being the central operator control and display unit, as well as being the combined connection to the host control system. Up to 8 measuring values can be transmitted. The measuring station is delivered pre-assembled. The AquaMaster then requires only power and the connection of water inlet and water outlet, then … Measure!

TurBiScat

TurBiScat

The Sigrist TurBiScat monitors turbidity in liquids. Depending on your application, The TurBiScat can monitor turbidity at 90° and/or 25° using the highly accurate scattered light principle. There is an additional option of measuring Colour at a 430nm wavelength to monitor beer colour in EBC.

The combination of Hastelloy and sapphire in a seal-less design allows operating the unit in practically all process applications. Window fouling is monitored, compensated and can be checked using an anti-fouling control. Calibration is easily performed easily and at lab values of accuracy using a secondary reference standard.

 

 

TurBiGuard

TurBiGuard

The brewing, wine, sugar and beverage industries have the Sigrist TurBiGuard specifically designed for monitoring medium to high turbidity, in hygienic process liquids. The TurBiScat measures turbidity using the absorption method and is typically mounted inline using a Varivent connection. The focus of the TurBiScat is for easy installation and extremely low maintenance. There are no seals to replace and the calibration only requires a zero setting.

 

LabScat

LabScat

The TurBiScat monitors turbidity in liquids. Depending on your application, we can offer 90°/25° scattered light measurement with the option of Colour at a 430nm wavelength. The combination of Hastelloy and sapphire in a seal-less design allows operating the unit in practically all process applications. Turbidity measurement is done with colour compensation. Window fouling is monitored, compensated and can be checked using an anti-fouling control. Calibration is easy and very accurate with a precision optical calibration check cell, specific to each instrument.

 

PhaseGuard

PhaseGuard

The PhaseGuard monitors phase change of product with water, yeast or CIP transitions by methods of turbidity or colour. The three models of the PhaseGuard cover most the possible applications: phase switch for turbidity (model T), for high turbidity (model HT) or based on of the products (model C). 

The PhaseGuard is factory adjusted with a universal measuring range based on absorption. For simple applications and system integration the instrument configuration and communication can be easily done using the serial interface in the instrument itself. combination with the existing outputs. For local monitoring and control, the optional control unit SICON with touch screen technology and colour display can be connected. 

OilGuard 2 Ex

OilGuard 2 Ex

The OilGuard works on the fluorescence principle. The design uses a non-contact measuring cell that eliminates contact between the sample and the flow cell. This ensures that the measuring cell remains clear from contamination and the drift in results that follows. If water doesn’t touch optics, the windows won’t foul.

The OilGuard Ex is the most dependable instrument available for monitoring mineral oils in hazardous environments with extremely low maintenance. The OilGuard Ex is doing service on many Australian oil platforms, FPSOs and Refineries today.

The instrument can be returned to factory calibration using the included highly stable, mono-crystalline calibration checking unit. Recalibration requires no consumables or tools to return the instrument back to factory calibration.  Furthermore, the OilGuard can be calibrated to your own specific oil profile by Sigrist during manufacture of your OilGuard, or by your team on site.

This instrument is for application in a hazardous area. If your proposed installation is in a safe are, then the lower cost OilGuard 2W may suit you better.

There is a closed cell version of the OilGuard for when your application calls for it.

OilGuard Ex M

OilGuard Ex M

The OilGuard Ex M complies with the IMO standard MEPC.107(49) Guidelines and Specifications for Pollution Prevention Equipment for Machinery space Bilges on Ships and 46 CFR 162.050

The OilGuard Ex M works on the fluorescence principle. The design uses a non-contact measuring cell that eliminates contact between the sample and the flow cell. This ensures that the measuring cell remains clear from contamination and the drift in results that follows. If water doesn’t touch optics, the windows won’t foul.

The OilGuard Ex M is the most dependable instrument available for monitoring potential pollution from bilge water in hazardous environments and with extremely low maintenance.

The instrument can be returned to factory calibration using the included highly stable, mono-crystalline calibration checking unit. Recalibration requires no consumables or tools to return the instrument back to factory calibration.

 

OilGuard 2W

OilGuard 2W

The instrument is used for monitoring oil traces in raw, surface run-off, process and wastewater. As a result of the non-contact (free-fall) measurement, there is no drift in readings as a result of window fouling. Another benefit of this design feature is the extremely low need for maintenance. This instrument is for non-hazardous applications.

No external operator interface is required as the colour touch-pad is integral to the analyser.

If the environment is hazardous, please refer to the OilGuard Ex

 

ColorPlus 2

ColorPlus 2

Knowing the organic load of your raw water and the colour staining of your raw water intake can provide a feed-forward element of control to your water treatment process to optimise the treatment process and save money.

Until now, measuring the dissolved organics and colour required an expensive system. With the Sigrist ColorPlus the upfront cost is low enough so that your ROI is going to be much higher, much sooner.

The ColorPlus measures the colour by absorption online using up to three different wavelengths. The bypass measuring cell has been specifically designed for applications within the water industry. Depending on the configuration you select, it allows measuring DOC (UV absorption) and colour (Hazen) simultaneously while compensating for turbidity, which would otherwise influence the results

ColorPlus 2 03 Water and Gas

ColorPlus 2 03 Water and Gas

The ColorPlus O3 analyuser can be setup to measure ozone in either gases or ultra-pure water. Let’s have a brief overview of both versions.

Measuring Ozone O3 in Water: The Sigrist ColorPlus 2 O3 Ozone meter for ultra-pure water measures the ozone concentration at a wavelength of 254nm according to standard DIN 19627 and the IOA (International Ozone Association). This instrument has a special measuring cell with a path-length of 100mm which allows measuring ozone in ultra pure water in the ppb range.

Measuring Ozone for Gases measures the ozone concentration according to standard DIN 19627 and the IOA at a wavelength of 254nm. According to these standards, the extinction coefficient is 3024 l/mol cm. Therefore, the ozone measurement can be regarded as an absolute measurement requiring no calibration with ozone.

VisGuard

VisGuard

The Sigrist VisGuard is your partner in the safety and monitoring of road and rail tunnels. To ensure safety in a critical tunnel application you need to have dependable information on 

  • Visibility measurement 
  • Ventilation control 
  • Early fire/smoke detection in road and rail tunnels 
  • Dust concentration in air 
  • Detection of oil mist 

Visibility, CO concentration, and sometimes NO concentration are vital criteria for assessing air quality in road tunnels. These parameters are used for controlling the ventilation system in order to minimise energy consumption and also for closing down the tunnel whenever pre-established safety limits are exceeded.  

The  VisGuard is available in different versions:  In-situ, Extractive or Mini-extractive Installation  

FireGuard

FireGuard

The Sigrist FireGuard detects emerging fires at their early stages (cold smoke). The sensor uses the available natural air stream in the tunnel. This leads to a greater time for escape and orderly evacuation. (If fog is a potential issue, any influence caused by fog will be eliminated by optional heating elements).  

The sensor is very compact and has no moving parts needs no consumables.  

There are a variety of mounting methods: 

  • Wall 
  • Arched or flat ceiling 
  • Ventilation dampers  

 

ColorPlus 3 Nitrate

ColorPlus 3 Nitrate

Nitrate is one of the most common groundwater contaminants in rural areas. Higher nitrate levels can pose a direct threat to health, but they also indicate the possible presence of other more serious contaminants, such as bacteria or pesticides.  Nitrate in groundwater originates primarily from fertilizers, septic systems, and manure storage or agricultural spreading operations.

The Sigrist ColorPlus 3 offers you online measurement of nitrate. We use a long-life xenon flash lamp is which offers a well-defined light spectrum over the wavelengths we require with a very low loss of intensity.

ScrubberGuard

ScrubberGuard

To meet the challenges of maritime shipping, SIGRIST combines established individual components in an innovative all-in-one system – complemented by unique maritime refinements!