The FCLA7000 eXact^® Micro 7 is EPA-compliant for Free Chlorine, Total Chlorine, and Chlorine Dioxide regulatory testing. It's the ideal choice for calibrating our FCL400 series free chlorine and CLD400 series chlorine dioxide sensors. It can also be used for field spot tests for commercial and municipal testing.

The FCLA7000 eXact^® Micro 7 is EPA-compliant for Free Chlorine, Total Chlorine, and Chlorine Dioxide regulatory testing. It's ideal for calibrating our FCL400 series free chlorine and CLD400 series chlorine dioxide sensors. It can also be used for field spot tests for commercial and municipal testing.

Calibration of our online free chlorine and chlorine dioxide sensors is accomplished using the DPD methodology. The FCLA7000 eXact^® Micro 7 is designed to provide an effiecient real time on site measurement for calibrating our online sensors. It is EPA-compliant and carries the CE mark. Four AAA batteries (not included) power the FCLA7000. It is supplied with test strips to perform 1000 tests 0-6ppm. (Note: For higher 6-11ppm, use the HR strips ordered seperately. For chlorine dioxide, the use of an additional glycine strip to bind any chlorine present is required. These additional strips are ordered seperately from the FCLA7000 kit.)

Compare the performance and 1000 tests of the FCLA7000 eXact Micro 7 with models costing three times as much. You will quicly notice the value. With a 4 mL sample cell it's environmental friendly, using less chemicals than the ordinary 10 ml test. The meter provides accuracy you can rely on, minimum variation, and fast results (uses 20 second test method) at 0.01 resolution. To interpet the data for chlorine dioxide, use the graph located in the instruction manual.

The FCL series Free Chlorine sensors are available for real time 0-2ppm, 0-5ppm and 0-10ppm measurements. An isolated 4-20mA output offers versatility in interfacing these sensors.

The FCL series Free Chlorine sensors are available for real time 0-2ppm, 0-5ppm and 0-10ppm measurements. An isolated 4-20mA output offers versatility in interfacing these sensors.

The FCL series Free Chlorine sensors utilize amperometric technology for real time Free Chlorine measurements. Applications include water treatment disinfection and free chlorine generators. These sensors integrate a temperature element for ATC and provide a fixed temperature compensated 4-20mA output. A power supply voltage of 12-24VDC is required. The FCL-402D is designed for 0-2ppm measurements and the FCL410D features a measuring range of 0-10ppm. The newest addition to this line is the FCL-405D which measures 0-5ppm. Membrane caps are easily replaceable. Electrolyte is also available and should be used to refill the membrane cap when replaced. The sensor's body is constructed of Black PVC. A specialized acrylic flow cell (FC72) provides a controlled flow enviornment for stability.

To learn more about re-fill solutions and replacement membrane caps, visit our ClO₂ and Free Cl- sensor replacement parts page.

Also, download our Free Chlorine product instructions for more information.

Inductive non-contacting toroidal conductivity cells resist fouling and coatings common with contacting cells. They feature a very wide measuring range from near 0 - 2,000,000 uS. Use for long term deployment with no maintenance

Resists fouling and coatings common with contacting cells.

Very wide measuring range of 0 - 2,000,000 uS.

Use for long term deployment with no maintenance.

The TCS series toroidal conductivity sensor provides a non-contacting, inductive type conductivity measurement over a wide measuring range from 0 - 2,000,000 uS.

Choose the New TCS3020 for use with our TCSMA or TCSTX toroidal two-wire 4-20mA transmitter. 

The TCS3000 cells can be connected directly to many toroidal controllers and transmitters manufactured by Rosemount, Foxboro, and many others. Contact Sensorex for compatability.

Measurements can be made in samples from concentrated acids to microsiemen water with the same cell.

Fouling and coatings are eliminated (or at least substantially reduced) with non-contacting cells. They will provide long term, trouble free operation.

All toroidal sensors are submersion ready to mount in tanks. Our standard Noryl TCS3020 and TCS3000 sensors can be mounted in-line with our unique 2" keyed CPVC flowcell.

Model FC95C Special CPVC keyed flow cell for TCS toroidal series sensors.

All models include a standard style ATC measuring element and a 20' (6 meter) cable. Be sure to specify your ATC element when ordering. Standard construction is Noryl.

PRECONFIGURED KIT:

PN: TCS3200: Kit includes TCSMA Blind Transmitter, TCS3020 Toroidal Conductivity Sensor, FC95C 2" Flow Cell.

PN: TCS3300: Kit includes TCSTX Transmitter with local display and intuitive menu, TCS3020 Toroidal Conductivity Sensor, FC95C 2" Flow Cell.

Low Ionic pH applications can cause pH electrodes to appear unstable and sensitive to drift. Sensorex offers special models in low ionic configuration to help solve these issues.

Special electrodes are available for low ionic pH applications.

Low ionic samples can cause pH electrodes to appear drifty and unstable, making it difficult to use as a process control. Sensorex offers special models of our most popular electrodes in a low ionic configuration to help solve these issues. Samples less than 100 microsiemens conductivity should use these special models. By balancing the chemistry inside the electrode we created a pH and reference cell suited for low ionic environments. The result is an electrode which is stable and repeatable which will allow users to utilize them for process control. 

The following are our most popular models; however, any pH electrode can be supplied in a special low ionic configuration.

Low Ionic pH  Electrodes

The S600 series of flat surface pH electrodes changed the way the world approached process pH measurements. Available in configurations for in-line, side stream, insertion, and submersion, these pH electrodes save time and money and provide users with real benefits.

The S600 series of flat surface pH electrodes changed the way the world approached process pH measurements. Available in configurations for in-line, side stream, insertion, and submersion, these pH electrodes save time and money and provide users with real benefits.

The S600 series of flat surface pH electrodes can be ordered in configurations for in-line, side stream, insertion, and submersion. These pH electrodes save time and money and provide users with real benefits. The flat surface measuring glass, when used in turbulent flow, reduces coating and build up in dirty applications. Choose electrodes for general use in low ionic samples or samples containing acidic HF. The cartridge type design allows sensor replacement in seconds which reduces downtime. Models are available in CPVC. Optional PVDF versions of the side stear, submersion, and insertion models are also available. Learn more about the four standard configurations:

Submersion - In-Line - Side Stream - Insertion

Insertion assembly, also known as wet-tap and hot-tap, are used through side walls of tanks or pipe diameters larger than two inches. Use of a one inch full port ball valve allows users to remove sensors from full vessels or pressurized lines.

Known as wet-tap, insertion assembly, or hot-tap, these sensors may be side-mounted into tanks or installed in large diameter pressurized pipes. Use of a one inch full port ball valve allows removal without system shutdown.

Because of its cost effective CPVC construction, the Sensorex Insertion Assembly allows pH measurements to be made in pressurized tanks and main lines without having to use expensive stainless steel components.

The insertion depth can be easily adjusted by the user to be positioned in a turbulent area of the tank or line. This will optimize the self-cleaning feature of the flat surface electrode. In abrasive applications, the electrode is usually positioned close to the pipe wall. This assembly is well suited for measurements in liquids with high suspended solids and for measurements in viscous liquids.

The insertion assembly can be fully retracted through an optional one inch full port ball valve (Sensorex part number BV-1). The ball valve is then closed, isolating the electrode and holder from the pressurized system. This is accomplished without draining the tank or de-pressurizing the line.

The special electrode used in the insertion assembly allows it to be mounted in any position; for example, it can be mounted through the bottom of a tank with its measuring surface facing upward. The vast majority of pH electrodes in the world should be installed above the horizontal plane due to the intentional placement of an air bubble in the pH stem (The air bubble compensates for pressure changes due to thermal expansion and contraction). The standard S655CD is the original electrode. The model S656CD is offered with HT gels for general or severe use. Also, special models are available for low ionic samples and samples containing acidic HF. Note the S656CD features protection for the flat measuring surface to help prevent breakage.

Order the pH cartridge electrode, an insertion assembly, and a cable assembly for the initial installation. In the future, replacement electrode cartridges are all that you will need to maintain your system. Standard components are constructed in CPVC. Choose parts with a "K" suffix for PVDF  components.

Insertion Mounted pH Electrode Assembly

* For cable assemblies, please specify the "L" in feet and the "EC" = End Connections to match with your controller, i.e. BNC + Bare Wire

Sensorex self-cleaning flat surface combination pH electrodes are available in fluoride resistant designs. A special glass formulation is used to enhance the resistance of the pH glass from fluoride attack, resulting in an extended life and reduced maintenance cost.

Available in both S8000 and S600 series, these electrodes are identical in size and shape to the standard self-cleaning flat surface electrodes. They are available for mounting in all configurations of the standard mounting hardware.

Semiconductor manufacturing, electroplating and glass etching solutions, and waste waters containing acidic fluorides such as Hydrofluoric Acid are ideal applications for these new electrodes. For certain fluoride applications, customers have experienced double, triple, and even five times longer life from this special glass formulation compared to competitive electrodes. One customer converted his whole plant (fluoride and non-fluoride applications) to these electrodes because of their superior stability, longer life, and reduced maintenance.

These cost effective electrodes are mounted into standard Sensorex gland fittings and can be used for submersion installations as well as in 3/4", 1", and 2" size pipe Tee's. They use our standard cap cables for ease of use. 

Short electrode service life? Electrodes shift when system is running? You may have a ground loop in your measurement system. Ground loops are fairly common and Sensorex has simple solutions to solve these issues.

Short electrode service life? Electrodes shift when system is running? You may have a ground loop in your measurement system.

Ground loops are a fairly common problem with pH measurements. Plastic tanks and piping lack adequate earth grounding if there is voltage leaking in the system. Look at our support section for a detailed explantion on ground loops. Sensorex offers some simple solutions to solve these issues.

Our S8000 system using our S8000CD pH electrode, mounting hardware EA899 or EA899TC with solution ground, and an optional differential electronic module EM801 can reject up to about 3V and provide a solution for this troublesome problem.

Within our S600 series we have a submersion sensor DA650CD with a built in differential amplifier. For in-line, our DA660CD (3/4"), DA661CD(1"), or DA662CD(2") also with internal differential amplifier can solve this issue up to about 3V in the system.

S8000 Ground Loop

S600 Ground Loop

 Use regular mounting hardware for S600 in-line or submersion installation.
 

This special in-line electrode is used in extremely oily or coating environments to increase velocity across the electrode face for maximum cleaning. Installed as bypass in a 3/4 inch line with ball valves to isolate the sensor.

These pH electrodes are available in special by-pass flow cells that optimize their self cleaning benefits. Customers in food and dairy applications or with oily wastewater use this unique design to solve many problems.

By-pass mountings are particularly useful in applications involving oily coatings, low suspended solids, or moderately viscous materials. The flow cell is easily isolated using inexpensive block valves to service the electrode without the need for any tools.

An inexpensive flow cell accelerates the velocity past the electrode in a predictable manner. Flow rates of one to five GPM provide excellent cleaning velocities in low viscosity applications. Exact control of flow rates is not required. Lower flow rates are used when viscosities are higher. Even one GPM still provides excellent flow in shear to assure that fresh material is always at the measuring surface.

In the food or dairy industry, only a tiny rate of fluid  product needs to be pumped through the flow cell. This material can then be directed to waste disposal with no chance of glass contaminating the consumers' product. Rates of 0.5 or even 0.2 gpm will provide accurate measurement of pH. The pH glass sensing technology is acknowledged to be the easiest to use, more repeatable, more accurate, more dependable, and cheaper in cost than solid state sensing technologies. 

The S8000 series in contructed in dependable PPS . The S600 series is offered standard in CPVC and is available in optional PVDF if required.

pH electrodes for submersion systems are used in open tanks and vessels such as wastewater treatment tanks. The pH sensors can be fully immersed and mounting hardware has threads to attach pipe to protect the cables from chemical attack.

Submersion systems are used in open tanks and vessels such as wastewater treatment tanks. The sensors can be fully immersed and mounting hardware has threads to attach standard couplers and pipe to protect the cables from chemical attack.

S8000 Submersion Systems

Our premium S8000CD pH electrode is a modular component system to customize your submersion installation needs. The S8000CD can be interfaced to original S653 or S653TC installations for submersion applications. Choose the S8000CD sensor of you choice, then select the EA890 mounting interface component for connection to an original S653 or S653TC. For a new submersion system installation with no ATC or a submersion system with ATC, choose the EA891, EA899, or EA899TC and choose the S853 coax or S855 Multi Conductor cable assembly as required. Optional preamplifier, differential amplifier, or two-wire 4-20mA transmitter modules can be placed in series to expand communication and signal transmission capabilities. The S8000 componets are constructed in PPS for dependability.

S600 Series Submersion Systems

Our S650CD or S651CD pH electrodes are combined with an S653 (non ATC) or an S653TC cap cable assembly for a simple submersion installation. Standard models are manufactured in CPVC. Choose the parts with a "K" suffix for PVDF components.

In-line mountings are ideal for replacing existing brands of in-line electrodes. In turbulent flow, they will perform as self-cleaning pH electrodes. They are available with or without temperature compensation and in our original S600 Series or our premium S8000 Series.

In-line mountings are ideal for replacing existing brands of in-line electrodes. They are designed for use in piping systems where the flow can be shut off for electrode maintenance. In turbulent flow, they will perform as self-cleaning electrodes. Choose our original S600 Series or our premium S8000 Series. Cartridge design saves time and money. Electrode replacement can be done in seconds with no tools.

S8000 Series

In-line measurements are accomplished with our 1.5 inch flow cell. Choose our premium flat surface electrode S8000CD, the in-line mounting adapter, flowcell, and cable assembly. Other pipe sizes are accomodated by reducing the flow cell with common slip fittings. For metric users, our FC801 adapters convert US slip size to accept metric 1" equivelent (32mm) pipe. Optional preamplifier, differential amplifier, or two-wire 4-20mA transmitter modules can be placed in series to expand communication and signal transmission capabilities.

S600 Series

A simple, reusable gland (FC66P 20% glass filled PP) is used to mount the electrode. Electrodes, glands, and flow cells are available to fit 3/4", 1", and 2" lines. Choose the S660CD electrode, mounting hardware with or without ATC as required.