Vaisala INTERCAP HMDW80 SERIES Especificaciones Pagina 91
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Dew Point
Technical Data
Measured Variables DMT345
DEW POINT DMT345
Sensor Vaisala DRYCAP
®
180S
Measurement range -40 ... +100 °C (-40 ... +212 °F) Td
Accuracy ±2°C (±3.6 °F) Td
See the accuracy graph below
TEMPERATURE DMT345
Measurement range 0 ... +180 °C (+32 ... +356°F)
with sensor warming upper range limited by humidity
(at 80 %RH warming is switched on and T
reading not actual process temperature)
Accuracy ±0.4 °C at 100 °C
Temperature sensor Pt100 RTD Class F0.1 IEC 60751
RELATIVE HUMIDITY DMT345
Measurement range 0 ... 100 %RH
with sensor warming 0 ... 80 %RH
Accuracy
below 10 %RH ±10% of reading
above 10 %RH ±1.5 %RH + 1.5% of reading
MIXING RATIO DMT345
Measurement range (typical) 0 ... 1000 g/kg (0 ... 7000 gr/lbs)
Accuracy (typical) ±12% of reading
Response time 63% [90%] flow rate 1 l/min and 1 bar pressure
from dry to wet 5 s [10 s]
from wet to dry including auto-calibration 45 s [5 min]
The stainless steel probe is especially designed for high
temperatures and has an optional installation flange for
easy adjustment of the probe’s installation depth and,
therefore, more precise positioning.
DMT346: Reliable in Very Hot Processes
The DMT346 provides the best measurement performance
at process temperatures between 140 °C and 350 °C.
The DMT346 includes a cooling set as standard. The
cooling effect can be regulated by adding the cooling
fins, or they can be removed from the set for optimal
measurement performance.
The cooling system has no moving parts, and requires no
additional power or cooling utilities, so there is no risk of
sensor damage due to mechanical cooling failure.
Additionally, sensor warming minimizes the risk of
condensation accumulating on the sensor. In low humidity
conditions the combination of auto-calibration and
DRYCAP
®
ensures accurate measurement.
Graphical Display of Measurement Data
and Trends for Convenient Operation
The DMT345 and DMT346 transmitters feature a large
numerical and graphical display with a multilingual menu
and keypad. It allows users to easily monitor operational
data, measurement trends, and access measurement
history for the past 12 months.
The optional data logger, with real-time clock, makes
it possible to generate over four years of measurement
history and zoom in on any desired time or time frame.
The display alarm allows tracking of any measured
parameter, with freely configurable low and high limits.
Versatile Outputs and Data Collection
DMT345 and DMT346 transmitters can support up to three
analog outputs; an isolated galvanic power supply and
relay outputs are also available.
For serial interface the USB connection, RS232, and RS485
can be used.
DMT345 and DMT346 are also capable of applying
the MODBUS communication protocol and, together
with an appropriate connection option, provide either
MODBUS RTU (RS485) or MODBUS TCP/IP (Ethernet)
communication.
The data logger, with real-time clock and battery backup,
guarantees reliable logging of measurement data for over
four years. The recorded data can be viewed on the local
display or transferred to a PC with Microsoft Windows
®
software. The transmitter can also be connected to a
network with an optional (W)LAN interface, which enables
a (wireless) Ethernet connection. A USB service cable
makes it easy to connect the DMT345/346 to a PC via the
service port.
Units are delivered installation-ready.
Dew point accuracy vs. measurement conditions
Accuracy ±2°C Td
or better
Dew point temperature (°C)
Temperature of measured gas (°C)
Water vapor saturation line
Accuracy
± 4°C Td
or better
Accuracy not specified, output active
Dew point measurement range lower limit
Dew point accuracy vs. measurement conditions
- PRESSURE / WEATHER 1
- Measure 2
- Dew Point 4
- Relative Humidity 6
- Humidity Products 7
- What is Humidity? 8
- An Introduction 8
- Parameters 8
- Recommended 10
- Humidity 11
- Humidity Instrument 15
- Calibration 15
- Calibration of Dew Point 15
- Instruments 15
- Proven Vaisala HUMICAP® 16
- Performance 16
- Chemical Purge Minimizes 16
- Effects of Contaminants 16
- Flexible Installation 20
- Process is Running 23
- HMT331 probe 24
- HMT333 probe 24
- HMT334 probe 24
- HMT335 probe 24
- Looking for Accurate 25
- Instruments? 25
- Only Vaisala HUMICAP® 25
- Measures Up 25
- Temperature Transmitters 26
- HMP361 for wall mounting 27
- HMP363 for confined spaces 27
- HMP364 for high pressure 27
- HMP365 for high temperature 28
- HMP367 for high humidities 28
- HMP368 for pressurized 28
- Accessories 31
- Calculate 35
- Interchangeable Probe 36
- Remote probe dimensions 38
- BACnet in Brief 40
- Measures both Humidity 42
- Fast, On-Site Calibration 42
- Resistant to Chemicals 42
- Performance for Outdoor 48
- Easy Installation and 48
- Maintenance 48
- Easy Installation 50
- Reliable Operation 50
- Low Maintenance 54
- Chambers 56
- Vaisala INTERCAP 58
- Humidity and Temperature 58
- Probe HMP60 58
- Vaisala HUMICAP 60
- Probe HMP110 60
- Three Probes 62
- MI70 Link 62
- Temperature Meter HM40 64
- Features or Benefits 70
- Standard Contents of SHM40 70
- HMK15 Humidity Calibrator 72
- DTR500 Solar Radiation and 76
- Precipitation Shields 76
- Upper electrode 83
- Lower electrode 83
- Thin-film polymer 83
- Glass substrate 83
- Versatile Outputs and 85
- Data Collection 85
- Probe Specifications 86
- You Compress Air 89
- We Make Sure It’s Dry 89
- Measure Humidity Directly 90
- DMT345: Accurate in Hot 90
- OEM Applications 94
- DMT132 Dewpoint Transmitter 100
- Technical Data 101
- Spot-Checking Applications 102
- DSS70A Portable 104
- Sampling System 104
- Sampling Cells for 104
- Pressurized Processes 104
- Features/Benefits 106
- Dimensions 106
- Online Reliability 108
- Savings Across the Board 108
- Risk-Free, Greener 108
- Solution 108
- The Fruit of Experience 108
- Multiparameter Transmitter 110
- Outages 111
- Happen 24/7 111
- So Should Monitoring 111
- Moisture in Oil 112
- HUMICAP in Brief 113
- Transmitter Series for Oil 114
- Mounting Options 115
- MMT332 for High Pressure 116
- Installations 116
- MMT337 with Small-Sized Probe 116
- Transmitter for Oil 118
- Carbon Dioxide 124
- The CARBOCAP® Story 125
- Measurements 126
- Carbon Dioxide Probe 128
- Measurement 129
- Stability and Ability 129
- Interchangeable Probes 130
- Demanding OEM Applications 132
- GMM111 Carbon Dioxide Module 134
- Vaisala CARBOCAP 136
- Technology 136
- Two Sampling Methods 136
- Reliability from Unique 138
- Measurement Technology 138
- Convenient Installation 138
- Easy Calibration 138
- Please contact us at 140
- Demand Controlled Ventilation 144
- GMM112 Carbon Dioxide Module 148
- Pressure 150
- The BAROCAP Story 151
- PTU300 Models 153
- Digital Barometer 160
- SUBSCRIBE 161
- Take the Lab to the Field 162
- Standard PTB330TS 164
- PTB210 Digital Barometer 166
- Vaisala BAROCAP® 168
- Accuracy and Stability 168
- Applications 168
- Ideal for Outdoor 170
- Carefree Maintenance 170
- Operating Environment 172
- Available Options 172
- / TECHNOLOGY DESCRIPTION 176
- Vaisala WINDCAP® Sensor 177
- Vaisala RAINCAP® Sensor 177
- Measuring Acoustic 178
- Precipitation 178
- WMT52 Ultrasonic Wind Sensor 180
- Wind Measurement 182
- Vaisala Service Offering 184
- Service Offering 185
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