Relays and other accessories – Vaisala GMW20 Benutzerhandbuch
Seite 10
User’s Guide_____________________________________________________ GMW20
8
Weight
GMW21
GMW21 with display
GMW22
GMW22 with display
100g
130g
90g
120g
Relays and Other Accessories
Transmitters can be ordered with or without relays. The default
relay trigger point has been set to 1000 ppm. This can be
changed with the optional software kit 19222GM.
Description Or
der Code
Display and relay output option
GMI21
Relay output option
GMR20
LonWorks module with CO
2
signal
(Not available when display option is added)
GML20
LonWorks module with both CO
2
signal and
temperature signals (not available when display
option is added)
GML20T
Analog temperature module for GMW21
(not available when display option is added)
GMA20T
Serial COM adapter
19040GM
Hand-held meter for field verification
GM70