Vaisala HMD70U Service Manual Page 71
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69
Technical Data
Ref. B210765EN-C ©Vaisala 2011
This material is subject to copyright protection, with all
copyrights retained by Vaisala and its individual partners. All
rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. The reproduction, transfer,
distribution or storage of information contained in this brochure
in any form without the prior written consent of Vaisala is strictly
prohibited. All specifications — technical included — are subject
to change without notice.
Dew point temperature (°C)
0
20 40 60
0
40
-60
-80
Process temperature (°C)
10
20
30
50
60
70
-10
-20
-30
-50
-40
-70
3010
50
Accuracy < ± 2°C Td
Dew point measurement range lower limit
Water vapor saturation line
For more information, visit
www.vaisala.com or contact
us at sales@vaisala.com
Dew Point Temperature
Measurement range (typical) -60 ... +60 °C (-76 ... +140 °F)
Analog output scalings
Option A -80 ...+20 °C (-112 ... +68 °F) T
d
Option B -60 ... +60 °C (-76 ... +140 °F) T
d
Option X free scaling
(when the dew point is below 0 °C (32 °F),
the transmitter outputs frost point)
Accuracy with DRYCAP
®
180M ±2 °C (±3.6 °F)
(see graph below)
Operating Environment
Temperature 0 ... +60 °C (32 ... +140 °F)
higher temperature peaks Short-term OK
Relative humidity 0 ... 100 %RH
Pressure 0 ... 20 bara (0 ... 290 psia)
Sample flow rate no effect
Output
Analog output 4 ...20 mA
Resolution for analog output ±0.002 mA
Typical temperature dependence 0.0008 mA/ °C
Serial line for service use RS232
General
Sensor DRYCAP
®
180M
Optimal sensor for refrigeration dryers DRYCAP
®
180S
Operating voltage 18 - 35 VDC, 20 - 28 VAC
Power consumption at 24 VDC max. 220 mA
External load for analog output max. 500 Ω
Optional connection cable with
DMT242 connector 2 m or 10 m
Connector for supply voltage and
signal output
max. wire size 0.75 mm
2
max. cable diameter 6.5 mm /PG7
Service cable for serial interface
RS232 product code DMT242RS
Probe material (wetted parts) stainless steel
(AISI 316L)
Sensor protection stainless steel
sintered filter (HM47280)
Mechanical connection G½” ISO228-1 thread with
bonded seal ring (U-seal)
Eletronics housing material plastic (ABS/PC)
Housing classification IP65 (NEMA4)
Storage temperature range -40 ... +70 °C, (-40 ... +158
°F)
Complies with the EMC standard EN61326-1, Electrical equipment
for measurement, control and laboratory use - EMC requirements;
Industrial environment.
DEW POINT ACCURACY VS. MEASUREMENT CONDITIONS
Response time 63 % [90 %] at +20 °C gas temperature
Flow rate >1 l/min and 1 bar pressure
-60 -> -20 °C Td (-76 -> -4 °F Td) 5 s [10 s]
-20 -> -60 °C Td (-4 -> -76 °F Td) 45 s [10 min]
Accuracy with DRYCAP
®
180S ±2 °C (±3.6 °F)
(see graph below)
- HUMIDITY / DEW POINT / 1
- PRESSURE / WEATHER 1
- ACC URATE 2
- Humidity 4
- Dew Point 4
- Mounting Options 9
- Graphical Display of 10
- History and 10
- Measurement Trends 10
- Outputs and Power Supply 10
- Options for Every Need 10
- Flexible Installation 11
- For Moderate Humidities 11
- Vaisala HUMICAP® 12
- Performance 12
- Measurement Trends and 12
- Real Time History 12
- 41 (1.6) 13
- 51 (2.0) 13
- 192 (7.56) 13
- 253 (9.96) 13
- 37.5 (1.48) 14
- 79.5 (3.13) 14
- 99.5 (3.92) 14
- Temperature Transmitters 16
- HMP361 for wall mounting 17
- HMP363 for confined spaces 17
- HMP364 for high pressure 17
- HMP365 for high temperature 18
- HMP367 for high humidities 18
- HMP368 for pressurized 18
- Transmitter 22
- Interchangeable Probe 24
- Fast, On-Site Calibration 26
- Measures both Humidity 26
- Resistant to Chemicals 28
- Vaisala INTERCAP 30
- Humidity and Temperature 30
- Transmitter Series HMW80 30
- HVACApplications 32
- Demanding Applications 34
- Unique Warmed Probe 34
- Vaisala HUMICAP® Sensor 34
- Chambers 36
- Probe HMP60 38
- Vaisala HUMICAP 40
- Probe HMP110 40
- Three Probes 42
- MI70 Link 42
- Reliable and Cost-ecient 47
- HVAC Products 47
- Fast and Easy-to-Use 48
- HMK15 Humidity Calibrator 50
- DTR500 Solar Radiation 54
- Versatile Outputs and 61
- (Wireless) Data Collection 61
- Easy Installation 61
- Probe Specifications 62
- Ensure dry 65
- Measure Humidity Directly 66
- DMT345, Accurate in Hot 66
- OEM Applications 70
- Low Maintenance 72
- Dewpoint temperature (°C) 75
- DMT132 Dewpoint Transmitter 76
- DEW POINT 77
- CALCULATED VARIABLES 77
- Indoor Applications 78
- 110 (4 .33) 79
- 85 (3.35) 79
- 33 (1.30) 79
- DSS70A Portable 82
- Sampling System 82
- Sampling Cells for 82
- Pressurized Processes 82
- Online Reliability 86
- Savings Across the Board 86
- Risk-Free, Greener 86
- Solution 86
- The Fruit of Experience 86
- Multiparameter Transmitter 88
- When Moisture is a Problem 89
- Knowledge is Power 89
- Literally 89
- Transmitter Series for Oil 90
- Moisture in Oil 90
- The Vaisala HUMICAP 91
- Hand-Held 91
- R1/2" ISO7/1 92
- Prevent it 95
- Transmitter for Oil 96
- Features/Benefits 100
- Technical Data 101
- 0 ... 2 % 102
- Interchangeable Probes 104
- Demanding OEM Applications 106
- GMM111 Carbon Dioxide Module 108
- Vaisala CARBOCAP 110
- Technology 110
- Two Sampling Methods 110
- Features/Benefi ts 112
- Demand-controlled Ventilation 114
- GMM112 Carbon Dioxide Module 118
- GMM20W Carbon Dioxide Module 120
- Pressure 122
- PTU300 Models 123
- Mechanics 126
- Accessories 126
- Dimensions 126
- IN CONTROLLED ENVIRONMENTS 127
- Take the Lab to the Field 130
- For more information, visit 131
- Standard PTB330TS 132
- PTB210 Digital Barometer 134
- Calculate 137
- Vaisala BAROCAP® 138
- Accuracy and Stability 138
- Applications 138
- Ideal for outdoor 140
- Carefree maintenance 140
- Operating Environment 142
- Available Options 142
- Figure 1 143
- Figure 2 with Process 143
- Valve Actuator and 143
- Test Jacks 143
- Measuring Acoustic 146
- Precipitation 146
- Wind Measurement 150
- Vaisala Service Offering 152
- Accredited Body 153
- Accredited Parameters 153
- Vaisala Filters 154
- Vaisala Filters continued 155
- Vaisala Contact Information 158
- ASIA AND PACIFIC 159
- NORTH AMERICA 159
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