Dewpoint temperature measurement

Measurement range
Accuracy
Sensor

-80 ... -30 °C (-112 ... -22 °F) T_d
± 2 °C (3.6 °F) T_d
Vaisala DRYCAP® 180U

ppmvolume concentration measurement

Measurement range (typical)
Accuracy at +20 °C (+68 °F), 1013 mbar

0 ... 500 ppm
±(0.2 ppm + 20 % of reading)

Operating environment

Temperature
Relative humidity
Pressure
Measured gases
Sample flow rate

-40 ...+60 °C (-40 ... +140 °F)
0 ... 100 %RH (up to +20 °C / +68 °F)
0 ... 50 bar (725 psia)
non-corrosive gases
no effect on measurement accuracy

Inputs and outputs

Two analog outputs (scalable)
Digital output
On/Off output is available (instead of the 2nd analog output)
Operating voltage with
     RS485 output
     voltage output
     current output

4 ... 20 mA, 0 … 20 mA (3-wire), 0 ... 5 V,
0 … 10 V
RS485 (2-wire)




11 …28 VDC
15 ... 28 VDC
21 ... 28 VDC

Mechanics

Housing material (wetted parts)
Housing classification
Stainless steel mesh filter
Mechanical connections
     option 1
     option 2
     option 3
Weight (ISO G1/2")

AISI316L

IP65 (NEMA 4)
AISI303, filter grade, 18 µm

ISO G1/2"
NPT1/2"
UNF 3/4" -16
190 g (6.70 oz)

Calibration services

Calibration parameters
Traceability

dewpoint, temperature
NIST

Calibration services are available at the Vaisala European Service Center for a fixed price.
-Factory calibrations (ISO9001)

Calibration price includes:
-adjustment to meet specifications
-calibration and certificate before and after adjustment
-replacement of wearing parts

Spare parts

Common spare and wearing parts are available. For availability contact sales.

Repair

Repair services are available at the Vaisala European Service Center for a fixed price.

Repair price includes:
-repair work
-required parts
-calibration certificate
-service report

Technical support

Technical support for your installed units, contact helpdesk@vaisala.com.