Vaisala DMP5 User manual

EN
JA
M212356EN-B
Quick Guide
Vaisala Indigo Compatible
Dew Point and Temperature Probes
DMP5, DMP6, DMP7, DMP8

PUBLISHED BY
Vaisala Oyj
Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland
P.O. Box 26, FI-00421 Helsinki, Finland
[phone]
Visit our Internet pages at www.vaisala.com.
© Vaisala Oyj 2020
No part of this document may be
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Translated documents and translated
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applicable, not the translations.
The contents of this document are subject
to change without prior notice.
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information contained in this document.
Vaisala makes no representations on this
document’s compliance with the local
rules and regulations applicable at any
given time, and hereby disclaims any and
all responsibilities related thereto.
This document does not create any legally
binding obligations for Vaisala towards
customers or end users. All legally binding
obligations and agreements are included
exclusively in the applicable supply
contract or the General Conditions of Sale
and General Conditions of Service of
Vaisala.
This product contains software developed
by Vaisala or third parties. Use of the
software is governed by license terms and
conditions included in the applicable
supply contract or, in the absence of
separate license terms and conditions, by
the General License Conditions of Vaisala
Group.

Table of contents
English.............................................................................................................................................5
日本語...............................................................................................................31
3

4 M212356EN-B

Table of contents
Product Overview..............................................................................................6
Probe Structure............................................................................................................................ 6
Basic Features and Options......................................................................................................6
Output Parameters......................................................................................................................7
Installation...........................................................................................................8
DMP5 Probe........................................................................................................ 9
Installing with Mounting Flange 210696............................................................................. 10
DMP6 Probe........................................................................................................11
Installing Probe Head with Cooling Set DMP246CS.........................................................13
Cooling Set Installation Example........................................................................................... 15
DMP7 Probe.......................................................................................................16
DMP8 Probe.......................................................................................................18
Tightening the Clasp Nut........................................................................................................ 20
Attaching Ball Valve Kit to Process....................................................................................... 21
Wiring.................................................................................................................23
Attaching Probe to Indigo 200 Series Transmitter.................................24
Vaisala Insight Software.................................................................................25
Connecting to Insight Software.............................................................................................25
Modbus.............................................................................................................. 26
Default Communication Settings..........................................................................................26
Measurement Data Registers.................................................................................................26
Diagnostic Data Registers.......................................................................................................27
Configuration Registers...........................................................................................................28
Test Value Registers..................................................................................................................28
Technical Support............................................................................................29
More Information.......................................................................................................................29
Warranty...................................................................................................................................... 29
Recycling..................................................................................................................................... 29
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ENGLISH

Product Overview
DMP series probes are dew point and temperature measurement probes with a digital output
(Modbus protocol). The probes are designed for demanding dew point measurement
applications. The probes have a two-part structure, with measurement electronics contained in
the probe body and sensor(s) in the probe head. The probe body and the probe head are
connected by a cable. Length options for this connecting cable depend on the probe model.
The probes are compatible with Vaisala Indigo transmitters. They can also be connected to
Vaisala Insight software for configuration, calibration, diagnostics, and temporary online
monitoring.
Probe Structure
1
2
3
4
5
6
7
8
Figure 1 Probe Parts
1Protection cap (remove before use)
25-pin M12 connector
3Probe body with type label
4Status indicator:
Green Power on and probe online,
flashes when communicating
Red Error
O Power o or indicator
disabled
5Probe cable (do not cut)
6Probe head (DMP7 model shown)
7Location of sensors on the probe head.
DMP series probes have a removable
filter over the sensors that can be
replaced if it gets dirty or damaged.
8Protection cap (remove before use)
Basic Features and Options
• Comprehensive list of output parameters. For example: relative humidity, temperature,
dew point temperature, wet-bulb temperature, absolute humidity, mixing ratio, water
vapor pressure, enthalpy. See Output Parameters (page 7).
• Sensor purge provides superior chemical resistance
• Sensor warming function minimizes condensation on sensor
• Traceable calibration certificate
• Standalone Modbus RTU over RS-485
• Compatible with Indigo series of transmitters
• Can be connected to Vaisala Insight PC software for configuration, calibration,
diagnostics, and temporary online monitoring
6 M212356EN-B

Output Parameters
Values of all available output parameters are always locked (showing the latest
valid value) when chemical purge, autocalibration, or extra heat functions are
active.
Output parameter is available
Output parameter is unavailable during sensor warming unless temperature is written to
register 0334hex from an external source
Output parameter is not available on this model
Table 1 Availability of Output Parameters
Output Parameter Output Unit DMP5 DMP6 DMP7 DMP8
Relative humidity %RH
Temperature °C
Dew point temperature °C
Dew/frost point temperature °C
Dew/frost point temperature at
1 atm
°C
Dew point temperature at 1 atm °C
Absolute humidity g/m3
Mixing ratio g/kg
Water concentration ppmv
Water vapor pressure hPa
Water vapor saturation
pressure
hPa
Enthalpy kJ/kg
Dew point temperature
dierence
°C
Absolute humidity at NTP g/m3
Water mass fraction ppmw
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ENGLISH

Installation
When you choose the installation location for the probe, consider the following:
• Verify the operating environment specification of the probe model. The probe head
typically has a much wider operating temperature range than the probe body.
• If the temperature of the measured environment diers greatly from ambient
temperature, the entire probe head and preferably plenty of cable must be inside the
measured environment. This prevents measurement inaccuracy caused by heat
conduction along the cable.
• Probe mounting options are model-specific.
1
2
3
4
Figure 2 Example Installation
1Mount the probe head horizontally to prevent any water condensing on the probe head
from running to the sensors.
2Let the cable hang loosely to prevent condensed water from running along the cable to
the probe body or probe head.
3Attach the probe body to a wall or other surface using the two mounting clips (Vaisala
item 243257SP) supplied with the probe. Each clip attaches to the installation surface with
one screw (screw hole Ø 4.2 mm).
4Cable to Modbus master or Indigo transmitter.
The supplied mounting clips are not designed to withstand strong
vibration. Use other methods to secure the probe body if necessary. For
example, attach the probe body using a cable tie.
CAUTION!
8 M212356EN-B

DMP5 Probe
mm
[in]
136 [5.35]
Ø 25
[0.98]
M12/5
41 [1.61]
242 [9.53]
192 [7.56]
Ø 12
[0.47]
Ø 13.5 [0.53]
Ø 5
[0.2]
Probe cable
2 m [6.56 ft] or 10 m [32.8 ft]
Figure 3 DMP5 Dimensions
Vaisala DRYCAPâDew Point and Temperature Probe DMP5 is designed for humidity
measurement in applications with high temperatures. The long and robust steel probe and an
optional installation flange allow easy installation with adjustable depth through insulation, for
example, in ovens.
DMP5 is built for direct measurement in hot and dry processes, up to +180 °C (+356 °F). As the
probe can be directly placed in the process, there is no need for a sampling system or trace
heating. As a result, high measurement accuracy and constancy are maintained. DMP5
provides unmatched dry-end measurement accuracy at temperatures up to 140 °C; however, it
can operate safely at temperatures up to 180 °C.
• Operating temperature of probe body −40 … +80 °C (−40 … +176 °F)
• Operating temperature of probe head −40 ... +180 °C (−40 ... +356 °F)
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ENGLISH

Installing with Mounting Flange 210696
Mounting flange 210696 is designed for attaching Ø13.5 mm probe heads through the wall of a
process chamber or duct. The flange kit includes a flange, a sealing ring, and screws.
75 [2.95]
50 [1.97]
Drilling 16 ... 22
[0.63 ... 0.87]
105 ... 200 [4.1 ... 7.87]
1
2
3
4
5
mm
[in]
1Wall of chamber or duct
2Flange
3Sealing ring
4Self-tapping screws (B 4.2×16 DIN 7981)
5Probe
When the temperature dierence between the process or duct and the
surroundings is large, insert the probe head as deep in the process or duct as
possible. This prevents errors caused by heat conduction along the probe cable.
10 M212356EN-B