Humidity And Temperature Meters
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Optimize your process with the Vaisala DMPx dew point series. Patented DRYCAP technology, auto-purge drift protection, and Indigo ecosystem compatibility.
Managing moisture isn’t just about measurement; it is about protecting your infrastructure, optimizing energy consumption, and ensuring product quality. The Vaisala DRYCAP® DMPx Series Dew Point and Temperature Probes deliver unmatched long-term stability and rapid response times in the most challenging industrial environments.
Built around Vaisala’s patented DRYCAP® sensor technology, the DMPx portfolio is engineered to withstand water condensation, particulate contamination, oil vapor, and harsh chemicals. Each probe features an automated chemical purge that periodically heats the sensor to drive off volatile contaminants, eliminating drift and drastically reducing maintenance cycles to a long, two-year interval.
As part of the Vaisala Indigo ecosystem, these smart probes offer total flexibility. They can operate as standalone digital Modbus RTU transmitters over RS-485 for seamless integration into existing control systems, connect to the Indigo handheld indicator for easy spot-checking, or pair with Vaisala Indigo series transmitters for advanced data visualization, local displays, and expanded analog or relay outputs.
Built for direct, in-line dew point measurement in hot processes, the DMP5 eliminates the need for complex sampling systems or expensive sample line trace heating. Its robust, long steel probe and optional installation flange allow for easily adjustable depths through heavy process insulation.
| Optimized For | Industrial drying ovens, baking systems, and textile processing. |
|---|---|
| Core Capabilities | Handles process temperatures up to 180 °C (356 °F). |
| Measurement Range | Dew point range from -40 to +100 °C Td with accuracy up to ±2 °C. |

When process temperatures climb beyond the limits of standard instruments, the DMP6 steps in. It features an innovative passive cooling set with removable fins that conduct heat away from the probe head. This purely mechanical design operates flawlessly without moving parts or external utilities, meaning there is zero risk of sensor failure due to cooling utility loss.
| Optimized For | Very high-temperature industrial drying, metal heat treatment, and specialized kilns. |
|---|---|
| Core Capabilities | Operates seamlessly in extreme process temperatures from 100 to 350 °C (212 to 662 °F). |
| Measurement Range | Dew point range from -25 to +100 °C Td with accuracy up to ±2 °C. |

Space constraints shouldn’t compromise your measurement accuracy. The DMP7 features an ultra-compact probe length of just 41 mm (1.61 inches), specifically engineered for installations where clearance is minimal. Paired with a pressure-tight Swagelok fitting, it ensures pristine low-humidity tracking in volatile, high-tech environments.
| Optimized For | Semiconductor manufacturing equipment, dry rooms, glove boxes, blanket gases, and compact industrial dryers. |
|---|---|
| Core Capabilities | Compact form-factor; rated for pressures from 0 to 10 bar (0 to 145 psi). |
| Measurement Range | Deep low-humidity dew point tracking from -70 to +80 °C Td with accuracy up to ±2 °C. |

Moisture is the primary enemy of compressed air networks and pressurized gas lines. The DMP8 is designed with a heavy-duty sliding seal that allows operators to easily adjust the insertion depth within pressurized lines. For seamless maintenance without shutting down operations, it pairs perfectly with an optional ball-valve installation kit, allowing safe insertion and removal under full process pressure.
| Optimized For | Pressurized pipelines, compressed air systems, and dynamic industrial gas distributions. |
|---|---|
| Core Capabilities | Built to withstand heavy mechanical stress and process pressures up to 40 bar (580 psi). |
| Measurement Range | Deep low-humidity dew point tracking from -70 to +80 °C Td with accuracy up to ±2 °C. |
