The RKI GD-70D is a compact, sample-draw smart transmitter built around a common sensing platform covering 50+ specialty toxic, corrosive, and combustible gases from one wall-mounted housing. An internal 0.5 L/min auto-adjusting pump draws sample to the sensor, and an optional Pyrolyzer/PLU-70 conditioning unit extends coverage to compounds like TEOS, TEB, TEOP, and NF3 used in vaporized hydrogen peroxide (VHP) disinfection and semiconductor CVD processes.

Standard output is 4-20mA, with optional Ethernet (10/100BASE-T) connectivity or Lonworks networking, and dry-contact relays for 1st/2nd/trouble alarms. Choose the compact standard housing or a NEMA 4X enclosure, the latter available with an integrated horn/strobe or Federal Signal strobe for local alarm annunciation; a no-sensor base unit is also available for facilities specifying their own sensor cartridge separately. Power is 24VDC ±10% (~1.5-4W standard, up to 25W with the Pyrolyzer). The configurations listed here cover the most commonly ordered gas types and housings — RKI builds dozens of additional gas-specific and housing configurations by quote.