RKI GD-81D Smart Gas Transmitter hydroponics with an optional 0-25% volume

with an optional 0-25% volume oxygen channel

hydrocarbon-free air to the inlet so the PID channel can be zeroed properly before a survey — zeroing on ambient air in a contaminated area is a common cause of readings that drift low

An internal pump pulls a continuous sample at roughly 0

occupying one of the monitor's sensor slots

bump-test balloons

RKI GD-81D Smart Gas Transmitter hydroponics with an optional 0-25% volumeThe RKI GD 81D is a sample draw smart transmitter built on a common sensing platform compatible with 300+ existing RKI sensor types, letting one wall mounted housing cover combustible gas, a wide range of toxics, oxygen, or CO2 depending on the sensor installed. An internal pump draws roughly 0. 5 L min, and dual 3 wire or 2 wire 4 20mA outputs pair with Ethernet (10 100BASE T) connectivity and dry contact relays for flexible integration. Powered by