This manual describes the features and functions of the Vaisala DRYCAP® DMT340 series humidity and temperature transmitters.
This manual covers all aspects of the Vaisala DMT340 DRYCAP humidity and temperature transmitter, including safety considerations, product overview, installation options, wiring, and configuration of communication interfaces. Detailed sections describe the operation of the display, analog and relay outputs, and optional modules such as power supply and data logger.
Additional chapters provide guidance on calibration, periodic maintenance, troubleshooting, and technical specifications. Appendices list optional accessories, dimensions, and calculation formulas for advanced use. This manual is written in French.
| Operating voltage | 24 VCA |
|---|---|
| Communication interfaces | LAN, WLAN, RS‑422/485 |
| RS‑422/485 interface | Supported |
| Analog output configuration | Adjustable mode and range |
| Relay output | Configurable with hysteresis |
| Optional power supply module | Available |
Select the language option on the display using the menu; the manual notes “Changer de langue.”
The transmitter is powered from a 24 VCA supply, as described in the installation section.
Send the RESET command over the serial interface; the manual references “Réinitialisation du transmetteur au moyen de la ligne série.”