
99
Technical Data
Performance
DEW POINT
Measurement range -20 ... +50 °C (-4 ... +122 °F) Td
Accuracy (at +20 °C (+68 °F) ±1 °C for -3...20 °C (+26.6 ... +68 °F) Td
±2 °C for -15...-3 °C (+5 ... +26.6 °F) Td
see accuracy graph below
* when dew point is below 0 °C (+32 °F), the transmitter outputs
frostpoint
Response time at 20 °C (+68 °F) gas temperature and 1 bar pressure
-14 -> +3 °C (+7 -> +37 °F) Td 17 s (63%)
40 s (90%)
+3 -> -14 °C (+37 -> +7 °F) Td 33 s (63%)
85 s (90%)
CALCULATED VARIABLES
Dew point converted to atmospheric pressure Tdf atm
Operating Environment
Operating temperature -10 ... + 60 °C (+14 ... +140 °F)
Operating pressure 0 ... 20 bar
Relative humidity 0 ... 100 %RH
Sample flow rate no effect on measurement accuracy
Measured gases non-corrosive gases
Outputs
Analog output (scalable) 4...20 mA, 2-wire
Resolution for current output 0.002 mA
Accuracy of analog outputs at +20 °C ±0.05% full scale
Typical temperature dependence ±0.005% of full scale/ °C
Connector 4-pin M8 (IEC 60947-5-2)
LED indication available for defined
dew point limit/ error state indication
RS485 serial line for service use
General
Sensor Vaisala HUMICAP
®
180R
Recommended calibration interval
(in refrigerant dryer application)
2 years
Mechanical connection G 1/2" ISO
Operating voltage 10 .... 28 VDC
External load max 100 ohm for supply voltages <20 VDC
max 500 ohm for supply voltages 20...28 VDC
Weight 65 g (2.3 oz)
Housing material PPS + 40% GF
Housing classification IP65 (NEMA 4)
Storage temperature range -40 ... + 80 °C (-40 ... +176 °F)
Start-up time 3 s
Complies with EMC standard EN61326-1, Electrical equipment
for measurement control and laboratory use - EMC requirements;
Industrial environment
Options and Accessories
Tube filter 230602
Special cover set for HMK15
(calibrator fitting DMT132 and HMP60) 230914
NPT Adapter 210662SP
Sample cells DMT242SC, DMT242SC2, DSC74,
DSC74B, DSC74C, DMCOIL
Duct installation flange DM240FA
Cables (several lengths available) HMP50Z032, HMP50Z300SP,
HMP50Z500SP, HMP50Z1000SP
Loop powered external display 226476
USB Service cable 219690
Connection cable to DM70/HM70 219980
LED plug 230388
ISO" 1/2 plug 218773
NPT1/2" plug 222507
Sealing ring set (3 pcs U-seal) 221525SP
Dew point temperature (°C)
0
20
20
0
10
30
-10
-20
-30
-10 10
30
40 50 60
Temperature of measured gas (°C)
50
40
60
Accuracy
±1 °C
Accuracy
±2 °C
2.5
12
4580.5
125.5
6
36
G1/2" ISO 228-1
33
AW
30
R19.5
Ref. B211105EN-B ©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.
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Dew Point
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