DMP8

DMP8 VAISALA | Alldatasheet

Document overview

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Technical content

Features

• Dew point measurement range
• Dew point measurement accuracy up to ±2 °C (±3.6 °F) Td/f
• Operating pressure of probe head 0 … 4 MPa (0 … 40 bar)
• Adjustable installation depth
• Tolerates condensation, oils, dust, and most chemicals
• Sensor purge improves long-term stability and chemical resistance
• Modbus RTU over RS-485
• Compatible with Vaisala Indigo products and Insight PC software
• Traceable calibration certificate Vaisala DRYCAPâ Dew Point and Temperature Probe DMP8 is designed for industrial low-humidity applications such as industrial drying, compressed air systems, and semiconductor industry. It can be installed in a 1/2" NPT or ISO thread with adjustable insertion depth. Stability at low dew points The Vaisala DRYCAPâ sensor is immune to particulate contamination, water condensation, oil vapor, and most chemicals. The sensor tolerates condensation and recovers perfectly if exposed to liquid water. Fast reaction time and stability make its performance unmatched also in dynamic and low dew point applications. Outstanding stability provides a long calibration interval. Sensor purge minimizes effects of contaminants In environments with high concentrations of chemicals and cleaning agents, the sensor purge option helps to maintain measurement accuracy between calibration intervals. Sensor purge involves heating the sensor to remove harmful chemicals. The function can be initiated manually or programmed to occur at set intervals. Easy installation Thanks to the sliding sealing, it is easy to adjust the installation depth of the DMP8 probe head. An optional ball valve kit allows for inserting or detaching the probe from a pressurized line. Flexible connectivity The probe can be used as a standalone digital Modbus RTU transmitter over an RS-485 serial bus, and it can also be connected to Indigo transmitters and the Indigo80 handheld indicator. For easy- to-use access to field calibration, device analytics, and configuration functionality, the probe can be connected to Vaisala Insight software for Windowsâ. For more information, see www.vaisala.com/ insight. Vaisala Indigo product family Indigo transmitters extend the capabilities of Indigo-compatible measurement probes. The transmitters can display measurements on the spot as well as transmit them to automation systems through analog signals, digital outputs, and relays. Cable length between probe and transmitter can be extended to up to 30 meters. The Indigo80 handheld indicator is ideal for spot-checking and process monitoring, as well as for configuring and troubleshooting the probe. For more information, see www.vaisala.com/ indigo.

Sensor DRYCAPâ 180M Measurement range −70 … +80 °C (−94 … +176 °F) Td/f Measurement range for continuous use −70 … +45 °C (−94 … +113 °F) Td/f Accuracy up to 20 bar/290 psia ±2 °C/±3.6 °F Td/f See accuracy graph Accuracy, 20 … 40 bar/290 … 580 psia Additional inaccuracy +1 °C Td/f Response time 63 % [90 %] 1): From dry to wet 5 s [15 s] From wet to dry 45 s [8 min] Temperature Measurement range 0 … +80 °C (+32 … +176 °F) Accuracy ±0.2 °C at room temperature Temperature sensor Pt100 RTD Class F0.1 IEC 60751 Relative humidity Measurement range 0 … 70 %RH Accuracy (RH <10 %RH, at + 20 °C) ±0.004 %RH + 20% of reading Concentration by volume (ppm) Measurement range (typical) 10 … 2500 ppm Accuracy (at + 20 °C, 1 bar) 1 ppm + 20% of reading 1) Tested with sintered filter. -40 -20 0 20 40 60 -40 -20 -60 -80 Area not recommended for continuous measurement Temperature of measured gas (°C) Dew point temperature (°C) Water vapor saturation line Accuracy ±2 °C Td/f Accuracy ±3 °C Td/f Dew point accuracy vs. measurement conditions Operating environment Operating temperature for probe head −40 … +80 °C (−40 … +176 °F) Operating temperature for probe body −40 … +80 °C (−40 … +176 °F) Storage temperature −40 … +80 °C (−40 … +176 °F) Operating pressure for probe head 0 … 40 bar (0 … 580 psia) Measurement environment For air, nitrogen, hydrogen, argon, helium, oxygen 1), and vacuum IP rating for probe body IP66 Mechanical durability of probe head Up to +180 °C (+356 °F) Up to 70 bar/1015 psia 1) Consult Vaisala if other chemicals are present. Consider safety regulations with flammable gases. Inputs and outputs Operating voltage 15 … 30 V DC Current consumption 10 mA typical, 500 mA max. Digital output RS-485, non-isolated Protocols Modbus RTU Output parameters Absolute humidity (g/m3) Relative humidity (%RH) Absolute humidity at NTP (g/m3) Relative humidity (dew/frost) (%RH) Dew point temperature (°C) Temperature (°C) Dew/frost point temperature (°C) Water concentration (ppmv) Dew/frost point temperature at 1 atm (°C) Water concentration (wet basis) (vol‑ %) Dew point temperature at 1 atm (°C) Water mass fraction (ppmw) Dew point temperature difference (°C) Water vapor pressure (hPa) Enthalpy (kJ/kg) Water vapor saturation pressure (hPa) Mixing ratio (g/kg) Compliance EU directives and regulations EMC Directive (2014/30/EU) RoHS Directive (2011/65/EU) amended by 2015/863 EMC compatibility EN 61326‑ 1, industrial environment Compliance marks CE, China RoHS, RCM Mechanical specifications Connector M12 5-pin A-coded male Weight 512 g (18.1 oz) Probe cable length 2 m (6.56 ft) Materials Probe AISI 316L Probe body AISI 316L Cable jacket FEP

Probe body 136 [5.35] Fixed probe cable Ø 25 [0.98]M12/5 Ø 12 [0.47] 41 [1.61] Ø 13.5 [0.53] Fitting body ISO 1/2” or NPT 1/2” Ø 5 [0.2] Probe head 268 [10.55] 230 [9.06] mm [in] DMP8 dimensions Accessories Fitting body ISO R 1/2" with leak screw ISOFITBODASP Fitting body ISO R 1/2" (no leak screw) DRW212076SP Fitting body NPT 1/2" (no leak screw) NPTFITBODASP Sampling cell DMT242SC Sampling cell with Swagelok connectors DMT242SC2 Ball valve kit ISO 1/2" with welding joint BALLVALVE-1 Duct installation flange for ISO R 1/2" thread DM240FASP Thread adapter ISO 1/2" to NPT 1/2" 210662SP Blind plug ISO 1/2" 218773 Indigo USB adapter 1) 242659 1) Vaisala Insight software for Windows available at www.vaisala.com/insight. Published by Vaisala | B211794EN-E © Vaisala 2022 All rights reserved. Any logos and/or product names are trademarks of Vaisala or its individual partners. Any reproduction, transfer, distribution or storage of information contained in this document is strictly prohibited. All specifications — technical included — are subject to change without notice. www.vaisala.com