Key facts
- Brand
- Vaisala
- Model
- DMT340
- Industry
- Industrial
- Documents
- 7
- Languages
- EN · JA · FR
- Last added
- 2012-04-06
Start here
Vaisala HMT330 DMT340 MMT330 Quick Reference Guide
This guide provides concise installation instructions for the Vaisala HUMICAP® HMT330, DRYCAP® DMT340 and HUMICAP® MMT330 transmitters. It covers key considerations for dew‑point, relative humidity and oil‑moisture measurements, recommended sampling‑system materials, and proper probe mounting to avoid condensation.
The document also details wiring recommendations (single screened cable 8‑11 mm diameter, 3‑10 conductors), standard mounting with four M6 screws, language‑selection menu on first power‑up, start‑up time for the DMT340 (≈6 minutes), and calibration information. Service center contacts for North America, Europe, Japan and China are provided.
Vaisala DMT340 specifications
| Cable diameter | 8‑11 mm |
|---|---|
| Start‑up time (DMT340) | about 6 minutes |
| Recommended sampling material | stainless steel (PTFE down to -40 °C) |
All Vaisala DMT340 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
The shortest path to a working setup, usually only a few pages.
Questions answered in these manuals
How long does the DMT340 take to become operational after power‑up?
The DMT340 requires about six minutes for its self‑diagnostics before the outputs become active.
How do you change the language on the DMT340?
Use the Display/Keypad menu to select the language setting.
How can you perform a one‑point dewpoint adjustment?
Select the one‑point dewpoint adjustment function on the Display/Keypad.
How do I change the display language?
Select the language option on the display using the menu; the manual notes “Changer de langue.”
What voltage is required to power the DMT340?
The transmitter is powered from a 24 VCA supply, as described in the installation section.