The Vaisala CARBOCAP® Carbon Dioxide and Temperature Transmitter GMW116 is a compact, wall-mounted carbon dioxide and temperature transmitter for demand-controlled ventilation. Ideal for HVAC applications, the GMW116 features advanced single-beam dual wavelength measurement with no moving parts.
The Vaisala GMW116 is a compact, wall‑mounted carbon dioxide and temperature transmitter designed for demand‑controlled ventilation in HVAC applications. It measures indoor CO₂ (0‑2000 ppm) and temperature (0‑50 °C) and sends analog 0‑10 V signals to a ventilation controller.
The guide provides step‑by‑step installation instructions, wiring diagrams for power and signal connections, mounting details, and diagnostic LED information. Technical data such as measurement accuracy, power consumption and environmental limits are also listed.
| CO₂ measurement range | 0 … 2000 ppm |
|---|---|
| CO₂ measurement accuracy | ±(2.0 % of range + 2 % of reading) |
| Temperature measurement range | 0 … +50 °C |
| Temperature measurement accuracy | ±0.7 °C at 25 °C |
| Operating humidity range | 0 … 85 %RH |
| Operating pressure range | 700 hPa … 1200 hPa |
| Power supply voltage | 24 V (±20 %) AC/DC |
| Power consumption | < 2 W |
| Analog output | 2 × 0‑10 V |
The transmitter operates on a 24 V (±20 %) AC or DC power supply.
The device measures carbon dioxide from 0 to 2000 ppm.