Instruction Manual

100 Commerce Way, Woburn, MA 01801
Tel: 1-888-VAISALA (824-7252) Fax: [phone]
Email: [e-mail] Online: www.vaisala-usa.com
DMP74 Dewpoint Measurement Probe
Measured variables
Dewpoint
Measurement range (typical) -76+140 °F (-60...+60 °C)
Accuracy -50...+60 °C ±3.6 °F (±2 °C)
see the graph below
Response time
63% (90%) at flow rate 0.2 m/s, 1 bar pressure, +68 °F (+20 °C)
-58 to 32 °F T
d
(-50 to 0 °C T
d
) 10 s [35 s]
32 to -4 °F T
d
(0 to -20 °C T
d
) 10 s [35 s]
32 to -40 °F T
d
(0 to -40 °C T
d
) 15 s [120 s]
32 to -58 °F T
d
(0 to -50 °C T
d
) 35 s [300 s]
Temperature
Measurement range 14 °F 140 °F (-10....+60 °C)
Accuracy at +68 °F (+20°C) ±0.36 °F (±0.2 °C)
Typical temperature dependence of electronics ±0.005 °C/°C
Temperature sensor Pt100 IEC751 1/3 class B
ppm volume concentration
Measurement range (typical) 40...200 000 ppm
Accuracy at +68 °F (+20°C) 7.3 ppm + 8.3% of reading
Relative humidity
Measurement range 0...100 %RH
Accuracy at +68 °F (+20°C)
RH < 10% ±0.025 %RH + 8.75% of reading
RH > 10% ±0.7 %RH + 2% of reading
Measurement environment
Temperature 14 °F 140 °F (-10....+60 °C)
Pressure 0...20 bar
Sample flow rate no effect
Probe general
Sensor DRYCAP

180S
Probe material (wetted parts) Stainless steel (AISI 316L)
Sensor protection Sintered filter (AISI 316L)
part no: HM47280
Mechanical connection G1/2" ISO228-1 thread
with bonded seal ring (U-seal)
Housing classification IP65 (NEMA4)
Weight 350 g
MI70 Measurement Indicator
Indicator general
Menu languages English, German, French,
Finnish and Spanish
Display LCD with backlight
Graphic trend display of any parameter
Character height up to 16 mm
Probe inputs 1 or 2
Power Supply Rechargeable NIMH battery pack
with AC-POWER or
4xA4 size alkalines, type IEC LR6
Analog output 0...1 VDC
Output resolution 0.6 mV
Data interface RS232C
Data-logging capacity 900...2700 points with real time
Alarm Audible alarm function
Operating temperature range 14 °F 104 °F (-10....+40 °C)
Operating humidity range non-condensing
Housing classification IP54
Weight 400 g
Battery operation time
Continuous use 48 h typical at +68 °F (+20°C)
Data logging use up to 30 days
DMP74 Probe + MI70 Indicator = DM70 Hand-held
Dewpoint Meter
General
Housing materials ABS/PC blend
Storage temperature -40 158 °F (-40...+70 °C)
Storage humidity 0..100 %RH non condensing
Total weight 750 g
Electromagnetic compatibility
Complies with the following standard:
EN 61326-1:1997 + Am1:1998, Electrical equipment for
measurement, control and laboratory use - EMC requirements
- Generic Environment.
Accessories and DM70KIT
DSC74 sample cell adapter
sampling system for pressurized processes
Pressure range 0...10 bar
g
Weight 300 g
Connection cables
for DMT242 Transmitter order no: 27160ZZ
for DMP248 Transmitter order no: 27159ZZ
Analog output cable order no: 27168ZZ
Windows
®
software including PC connection cable
order no: MI70LINK
Carrying Case MI70Case
DM70 Calibration Kit order no: DM70KIT
includes DM70 indicator with rechargeable battery and 115 VAC
adapter; MIK70 link & analog output signal cable; DMP74 probe;
DSC74 Sample cell and quick adapter; carrying case; certificate of
calibration, traceable to NIST.
Specifications subject to change without prior notice. DRYCAP® is
a registered trademark of Vaisala. ©Vaisala Oyj
TECHNICAL DATA - DM70
Dewpoint 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
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