THM Analyzer for the measurement of Trihalomethanes (THMs) at low levels in drinking water. THM’s may have serious affects on human health. Regulatory requirements of less than 100ppb of THMs can be difficult to measure continuously. Measuring THMs with gas chromatography, colorimetry and mass spectrometry can also be slow and/or expensive.
Multisensor simplifies THM monitoring with the MS2000 on-line monitoring system. By utilizing methodology based on Henry’s Law and reliably measuring the water THM concentration in the gas phase of the sample vessel headspace, maintenance is significantly reduced and measurement intervals are shortened greatly.
The MS2000 THM Analyzer operates in the range of 0-200 ppb, making it an ideal instrument for odor control and water safety in potable water plants. Rely on Multisensor’s MS2000 to monitor and control THMs in the pre-treatment and post-treatment stages of your drinking water plant to help save on energy, chemicals, filters, water and regulatory costs.
THM Analyzer Spec | Analyzer Value |
|---|---|
| Range | 0 – 200 ppb in water |
| Accuracy | +/-10% |
| Repeatability | +/-2% |
| Sampling Frequency | 20, 30 and 60 Minutes |
| User Interface | 8″ resistive touchscreen |
| Data Storage | µSD Card and Internal Memory |
| Data Interface | 4 – 20 mA and USB (Standard); Profibus, Modbus, Wireless (Optional) |
| Alarms | x2 Via Relay Drivers, Levels User Definable |
| Operating Temperature Range | 0 °C– 40 °C |
| Water Temperature Range | 1 °C – 40 °C |
| Power Consumption | 25 W Continuous (90-240 VAC or 24 VDC) |
| Reagents | None |
| Carrier Gas | None |
| Consumables | GAC filter media, Air Filter every 6 months |
| Validation | Every 6 Months |
Trihalomethanes (THM) are a group of four chemicals that are formed along with other disinfection byproducts.
When chlorine or other disinfectants are used to control contaminants in potable water, they react with organic and inorganic matter to produce THM’s.
The THMs are:
THM levels tend to increase with pH, temperature, time, and the level of “precursors” present. Precursors are organic material which reacts with chlorine to form THM’s. One way to decrease THM’s is to eliminate or reduce chlorination before the filters and to reduce precursors. There are more precursors present before filtration, so it is best to reduce or eliminate the time chlorine is in contact with this water.
The US EPA, for example, has indicated that the best available technology for THM control at treatment plants is removal of precursors through “enhanced coagulation”. Enhanced coagulation refers to the process of optimizing the filtration process to maximize removal of precursors. Removal is improved by decreasing pH (to levels as low as 4 or 5), increasing the feed rate of coagulants.
The principle of operation of the MS2000 THM Analyzer is the measurement of headspace gases from a sample tank containing the water to be measured.
Through the use of Henry’s Law the concentration of gases in the headspace is proportional to the concentration of the substance in the water.
Calibration of the instrument is done by presenting a known concentration to the sensors and generating calibration coefficients from the responses obtained.
The MS2000 works by passing water through a sample tank as shown below. The volatile components in the water will pass into the headspace above the water where they will be trapped. This will continue until equilibrium is reached.
A sample of the headspace gases are then passed across sensors in the MS2000 THM Analyzer sensor head, which respond to the THMs in the headspace. This response is then analysed by the instrument and a concentration value is generated based upon the relationship between the concentration present in the headspace and that in the water.
The MS2000 measures the concentration of Total Trihalomethanes in water, which is given by the sum of chloroform, bromoform, Bromodichloromethane and Dibromochloromethane.
Compared with other on-line parameters, THMs tend to vary slowly over the course of the day. The MS2000 Total THM monitor provides a reading every hour which is far quicker than our nearest competitor (once every 4 hours)
The instrument will report the Total THMs value.
The instrument is factory calibrated against a chloroform standard. Other requests can be considered
The instrument requires a service every 6 months which include a sensor replacement as part of the low cost service pack. This is part of a sensor replacement scheme which can be discussed with Multisensor or your distributor.
E-nose technology allows for non-contact measurement meaning that:
The MS2000 uses up to 1 litre per minute, which is simple to dispose of, but since no reagents are used the water could be returned to the water supply.
The MS2000 employs temperature and humidity control and compensation techniques to remove the effects of these parameters. Some volatile chemicals can be an interferer, but if these were found in any concentration in drinking water, where the MS2000 would be employed, they would represent a serious health risk in themselves.
The MS2000-SYS is packaged in a small enclosure and requires no additional chemical reagents for operation. The system includes both the measurement instrument and the sample presentation system, to allow the simple fitting of the unit within existing facilities.A variety of communications options can be provided including 4-20mA loop, Wireless, Modbus and Profibus. The sensors can detect Total Trihalomethanes, or TTHMs including Chloroform, Bromoform, Bromodichloromethane and Dibromochloromethane.For more information, please download the MS2000 Total Trihalomethane Analyzer Datasheet.
THM Analyzer for the measurement of Trihalomethanes (THMs) at low levels in drinking water. THM’s may have serious affects on human health. Regulatory requirements of less than 100ppb of THMs can be difficult to measure continuously. Measuring THMs with gas chromatography, colorimetry and mass spectrometry can also be slow and/or expensive.
Multisensor simplifies THM monitoring with the MS2000 on-line monitoring system. By utilizing methodology based on Henry’s Law and reliably measuring the water THM concentration in the gas phase of the sample vessel headspace, maintenance is significantly reduced and measurement intervals are shortened greatly.
The MS2000 THM Analyzer operates in the range of 0-200 ppb, making it an ideal instrument for odor control and water safety in potable water plants. Rely on Multisensor’s MS2000 to monitor and control THMs in the pre-treatment and post-treatment stages of your drinking water plant to help save on energy, chemicals, filters, water and regulatory costs.
THM Analyzer Spec | Analyzer Value |
|---|---|
| Range | 0 – 200 ppb in water |
| Accuracy | +/-10% |
| Repeatability | +/-2% |
| Sampling Frequency | 20, 30 and 60 Minutes |
| User Interface | 8″ resistive touchscreen |
| Data Storage | µSD Card and Internal Memory |
| Data Interface | 4 – 20 mA and USB (Standard); Profibus, Modbus, Wireless (Optional) |
| Alarms | x2 Via Relay Drivers, Levels User Definable |
| Operating Temperature Range | 0 °C– 40 °C |
| Water Temperature Range | 1 °C – 40 °C |
| Power Consumption | 25 W Continuous (90-240 VAC or 24 VDC) |
| Reagents | None |
| Carrier Gas | None |
| Consumables | GAC filter media, Air Filter every 6 months |
| Validation | Every 6 Months |
Trihalomethanes (THM) are a group of four chemicals that are formed along with other disinfection byproducts.
When chlorine or other disinfectants are used to control contaminants in potable water, they react with organic and inorganic matter to produce THM’s.
The THMs are:
THM levels tend to increase with pH, temperature, time, and the level of “precursors” present. Precursors are organic material which reacts with chlorine to form THM’s. One way to decrease THM’s is to eliminate or reduce chlorination before the filters and to reduce precursors. There are more precursors present before filtration, so it is best to reduce or eliminate the time chlorine is in contact with this water.
The US EPA, for example, has indicated that the best available technology for THM control at treatment plants is removal of precursors through “enhanced coagulation”. Enhanced coagulation refers to the process of optimizing the filtration process to maximize removal of precursors. Removal is improved by decreasing pH (to levels as low as 4 or 5), increasing the feed rate of coagulants.
The principle of operation of the MS2000 THM Analyzer is the measurement of headspace gases from a sample tank containing the water to be measured.
Through the use of Henry’s Law the concentration of gases in the headspace is proportional to the concentration of the substance in the water.
Calibration of the instrument is done by presenting a known concentration to the sensors and generating calibration coefficients from the responses obtained.
The MS2000 works by passing water through a sample tank as shown below. The volatile components in the water will pass into the headspace above the water where they will be trapped. This will continue until equilibrium is reached.
A sample of the headspace gases are then passed across sensors in the MS2000 THM Analyzer sensor head, which respond to the THMs in the headspace. This response is then analysed by the instrument and a concentration value is generated based upon the relationship between the concentration present in the headspace and that in the water.
The MS2000 measures the concentration of Total Trihalomethanes in water, which is given by the sum of chloroform, bromoform, Bromodichloromethane and Dibromochloromethane.
Compared with other on-line parameters, THMs tend to vary slowly over the course of the day. The MS2000 Total THM monitor provides a reading every hour which is far quicker than our nearest competitor (once every 4 hours)
The instrument will report the Total THMs value.
The instrument is factory calibrated against a chloroform standard. Other requests can be considered
The instrument requires a service every 6 months which include a sensor replacement as part of the low cost service pack. This is part of a sensor replacement scheme which can be discussed with Multisensor or your distributor.
E-nose technology allows for non-contact measurement meaning that:
The MS2000 uses up to 1 litre per minute, which is simple to dispose of, but since no reagents are used the water could be returned to the water supply.
The MS2000 employs temperature and humidity control and compensation techniques to remove the effects of these parameters. Some volatile chemicals can be an interferer, but if these were found in any concentration in drinking water, where the MS2000 would be employed, they would represent a serious health risk in themselves.
The MS2000-SYS is packaged in a small enclosure and requires no additional chemical reagents for operation. The system includes both the measurement instrument and the sample presentation system, to allow the simple fitting of the unit within existing facilities.A variety of communications options can be provided including 4-20mA loop, Wireless, Modbus and Profibus. The sensors can detect Total Trihalomethanes, or TTHMs including Chloroform, Bromoform, Bromodichloromethane and Dibromochloromethane.For more information, please download the MS2000 Total Trihalomethane Analyzer Datasheet.
WJF Instrumentation Ltd.
#5 3610 – 29th Street N.E.
Calgary, Alberta
Canada
T1Y 5Z7
Calgary Head Office
Toll-Free: (877)291-5572
Standard: (403)291-5570
Ontario & Maritimes Sales:
(905)809-6918
