- Detects high dust emissions or filter malfunctions (e.g., broken bags) on the clean gas side of dust collection systems.
- Based on a modified triboelectric principle—only moving particles generate a proportional signal; ignores dust build-up on the sensor rod.
- Models & outputs: GM01 — Relay output (max 48 V AC/DC, 1 A); GM02 — Transistor output (max 31 V DC, 15 mA); GM20 — Analog output 4–20 mA
- 17–31 V DC; GM01/02 draw max 60 mA, GM20 draws max 90 mA.
- Temperature & pressure limits: Standard ambient— –4°F to +158°F; Standard process — up to 194°F; Optional high-temp versions — 266°F / 392°F; Max pressure — 84 psi
- Stainless steel (AISI 303 or 316Ti), insulation options include PTFE, PEEK, or PA; standard seal NBR (optional FPM or silicone).
- Mount via welded threaded bush (G 0.5″ or G 1.5″); rod length = 1/3–2/3 of duct diameter (max 31.5″); requires 3 duct diameters straight run upstream and downstream.
- Sensitivity range 1–180,000; high/low switching; damping adjustable 0–10 s (GM01/02) or 0–180 s (GM20).
- IP67; optional ATEX Zone 2 & 22 certification.
- Thread bush options in AISI 304 or 316Ti; optional tri-clover clamp
