- True continuous mercury measurement (not measuring cycle)
- No wet-chemistry, no use of reagents
- Maintenance-free solid state catalyst
- Range 1 to 45; 0 to 75; 0 to 500 µg/m³ Hg (other ranges upon request)
- Corrosion protected, rugged construction
- Compact size, mobile operation possible
- Detects elemental, ionic and bound mercury
ENVEA Automatic Stack Gas Mercury Monitor SM-3
Automatic Mercury Stack Gas Monitor
The SM-3 mercury analyzer measures continuously the elemental, bound and ionic mercury in stack fluegas
The operating principle of the SM-3 is based on a completely new technique: mercury compounds cracking and the reduction of ionic mercury contained in stack gas is performed applying the thermocatalytic method.
Wet chemical sample gas treatment using reagents and bubblers is avoided. Maintenance and servicing of the SM-3 are therefore extremely easy.
Specifications
| TECHNICAL SPECIFICATIONS | |
|---|---|
| Signal outputs | analogue: 4 – 20 mA (max. 500 Ω); serial: RS 232; Modbus (option) |
| Status output | 3 x pairs of relay contacts (dry contacts) |
| Max. sample temperature | 200 °C |
| Ambient temperature range allowed | 5 – 40 °C |
| Sample line length | 30 m |
| Power supply | 230 VAC / 50 Hz (110 VAC / 60 Hz option) |
| El. Power consumption | Analyzer: max. 100 VA; sample line: max. 150 VA / meter |
| Dimensions (W x H x D) | approx. 55 x 160 x 70cm (mounted on stand) |
| Weight | approx. 50 kg |
| TECHNICAL DATA | |
|---|---|
| Measuring principle | thermocatalytic reduction at stack, cold vapor atomic absorption (CVVAAS) at 253.7 nm |
| Measured component | Total Gaseous Mercury (TGM) |
| UV-Source | Electrodeless low pressure mercury lamp (EDL) |
| Stabilization method | Reference beam method |
| Optical cell | Fused silica (Suprasil), l: approx. 230mm, heated approx. 45° |
| Measuring ranges | 0 – 50 µg/m³; 0 – 75 µg/m³; 0 – 500 µg/m³ |
| Detection limit | < 1 µg/m³ |
| Response time T90 | approx. 1 minute |
| Air supply | oil-free compressed air, approx. 1.5 bar |
