Sample Conditioning & Probes
The Tekran® Model 3400-COND gas conditioning unit allows virtually any combustion gas matrix to be analyzed for total gaseous mercury, elemental mercury and ionic mercury. The Model 3400-COND is designed around a modular framework, allowing a wide range of applications from bench-scale research to full-scale installations.
After conditioning, the two sample gas streams are sent to the Model 3400-ANLZ atomic fluorescence (AF) analyzer for quantification of mercury. The use of AF produces an extremely low detection limit, a wide dynamic range, and results free from interferences. Unlike CEM systems using conventional analytical techniques, the 3400 system is immune to even the highest levels of potential interferents present in a combustion sample stream.
- Measurement range: 0.05 – 1500 μg/m3
- Direct determination of total and elemental mercury
- Full temperature and system status logging
- No chemical reagents or consumable solid absorbers
The Tekran® Model 3400-WTR Water Filtration System is an inexpensive, convenient source of deionized, mercury free water for the Tekran® 3400 Mercury CEM. With two stages of pre-filtration eliminating particulate and organic contamination, the final stage R/O membrane and ion-exchange filters have extremely long life. The Model 1306 can supply enough water for up to four CEM systems. The filter elements are simple to change, inexpensive, and last in excess of one year in normal operating environments. (Lifetime may vary with local water conditions.)
- Holding tank has one day supply of purified water
- Water purity monitor verifies proper operation
- Optional booster pump for low water supply pressures
- Simple, rapid changing of filter elements
The Tekran® Model 3400-AIR Air Filtration System is an inexpensive, convenient conditioning unit for plant compressed air. The Tekran® Series 3400 Mercury CEM requires two types of air in order to operate. Motive air is required to drive the inertial filter sample flow via an eductor. Zero Air is used for dilution and calibration functions. Both types of air should be dry, oil free and particulate free, however the Zero Air is also scrubbed of all traces of mercury. The long-life filter elements and mercury scrubbers are simple to change, inexpensive, and last in excess of one year under normal operating conditions.
- Pressure regulators and shut-off valves for each supply
- Automatic draining water knockout traps
- Multi-stage particulate traps
- Quick disconnects allow rapid changing of Hg traps
The Tekran® Model 3443 is a customized version of an JCT Dilution Probe (Model JES-301). JCT probes are well-known for their dependability and ease of servicing. The probe incorporates a non-corrosive heated, replaceable Teflon filter element. The filter element is mounted in an electrically heated stainless steel housing covered by a thermal isolated weather protection enclosure. Temperature regulation is performed by a maintenance-free, fully electronic temperature controller with under temperature alarm.
The Tekran® Model 3400-OVEN is an integrated component of the 3400 System and provides a temperature controlled interface between the heated umbilical line and the 3400 cabinet. This heated zone is critical to ensure quantitative transfer of mercury species to the 3400 system while maintaining the same speciated mercury fractions that are present at the sample probe inlet.
For more information and a full listing of specifications and uses, please Download the Fact Sheet.