Tekran - Model 3425 -Portable Elemental & Oxidized Mercury Calibrator
The Tekran Model 3425 Elemental & Oxidized Mercury Calibrator provides NIST traceable calibration gas for system calibration. The 3425 is an added, programmable calibration gas source that complements the standard calibration gas source already installed inside the 3400 HgCEMS, necessary to comply with USEPA and other government regulations.
It can be used as a stand-alone mercury source and calibration system for monitoring or control technology research. The 3425 can be set to automatically generate multi-point calibration gas. The 3425 delivers elemental mercury gas using a NIST traceable, temperature controlled, saturated mercury vapor source. It generates oxidized mercury using a patented method that reacts HCl with elemental mercury to produce gaseous HgCl2 for system calibration or converter efficiency evaluation. Precision mass flow controllers dilute the mercury source output to the desired value. The mercury generator is capable of continuously producing large flow rates of calibration gas at virtually no ongoing cost.
Unlike other saturated sources, the Model 3425 contains a host of advanced features providing superior accuracy and unattended, remote operation. The 3425 Mercury Calibrator connects to any manufacturer`s external mercury analyzer, via a supplied 2-meter heated umbilical, enclosing a single 3/8-inch (9.5mm) Teflon tube, terminated with a SS compression fitting.
- Hg output range1: 0.5 to 300 (jg/m3
- Calibration gas delivery rate1: 4 to 20 SLPM
- Mercury source life: many years
- Allowable ambient temp: +5 to +45°C
- Hg source control range2: +4.00 to +30.00°C
- Independent linearization tables for each MFC
- Coal fired power plant MATS monitoring
- Waste incinerator emissions
- Third party CEMS auditing
- Metrology labs
- Cement plant MACT compliance monitoring
- Bench scale testing
- Mercury removal process monitoring
- Laboratory & field research
- Calibration gas output port
- High output rate: up to 20 SLPM
- Heated/cooled saturated mercury source
- Ultra-precise source control
- Repeatability: ±0.02°C
- Accuracy: ±0.05°C
- Range2: +4.00 to +30.00°C
- HCI reservoir and peristaltic pump located on back panel for easy access
- Precision pressure sensor for constant output concentration despite back pressure variations
- MFCs individually calibrated to minimize errors at low flow settings
- Multi-point calibration tables
- Linear interpolation between calibration points
- Solenoid valves provide control functions
- Isolation of Hg source until safe to activate
- Selection between main and auxiliary outputs