Atec Vaisala-DMT348 - Manual (Page 4)

Measured Parameters
Dew point
Sensor Vaisala DRYCAP ® 180M
Measurement range -60 ... +80 °C (-76 ... +176 °F) Td
For continuous use -60 ... +45 °C (-76 ... +113 °F) Td
Accuracy
up to 20 bar/290 psia ±2 °C/±3.6 °F see the accuracy
graph below
20 ... 50 bar/290 ... 725 psia additional inaccuracy +1 °C Td
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) 5s [10s]
-20 ... -60 °C Td (-4 ... -76 °F Td) 45s [10min]
temperature
Measurement range 0 ... +80 °C (+32 ... +176 °F)
Accuracy ±0.2 °C at room temperature
Temperature sensor Pt100 RTD Class F0.1 IEC 60751
Technical Data
Operating Environment
Operating temperature
for probes -40 ... +80 °C (-40 ... +176 °F)
Mechanical durability Up to +180 °C (+356 °F)
for transmitter body -40 ... +60 °C (-40 ... +140 °F)
with display 0 ... +60 °C (+32 ... +140 °F)
Storage temperature range -55 ... +80 °C (-67 ... +176 °F)
Pressure range for probes See probe specifications
Sample flow rate No effect
Measured gases non corrosive
Complies with EMC standard EN61326-1, Electrical equipment
for measurement, control and laboratory use - EMC requirements;
Industrial environment.
relative humiDity
Measurement range 0 ... 70 %RH
Accuracy (RH <10 %RH, at + 20 °C) ±0.004 %RH + 20 % of reading
ppm
Measurement range (typical) 10 ... 2500 ppm
Accuracy (at + 20 °C, 1 bar) 1 ppm + 20 % of reading
Other measurement parameters available (depends on model)
mixing ratio, absolute humidity, pressure dew point calculated
to 1 bar, temperature difference (T-Td), water vapor pressure
Digital outputs RS-232, RS-485 (optional)
Service connection RS-232, USB
Relay outputs 0.5 A, 250 VAC, SPDT (optional)
Ethernet interface (optional)
Supported standards 10/100Base-T
Connector RJ45
Protocols Telnet
WLAN interface (optional)
Supported standards 802.11b
Antenna connector type RP-SMA
Protocols Telnet
Security WEP 64/128,WPA
Authentication / Encryption
Open / no encryption
Open / WEP
WPA Pre shared key / TKIP
WPA Pre shared key / CCMP (a.k.a. WPA2)
Optional data logger with real-time clock
Logged parameters max. three with trend/min/max values
Logging interval 10 sec (fixed)
Max. logging period 4 years 5 months
Logged points 13,7 million points per parameter
Battery lifetime min. 5 years
Display LCD with backlight, graphic
trend display of any parameter
Display menu languages English, Chinese, Spanish, German,
French, Japanese, Russian, Swedish,
Finnish
Inputs and Outputs
Operating voltage 10 ... 35 VDC, 24 VAC
with optional power supply module 100 ... 240 VAC 50/60 Hz
Power consumption @ 20 °C (U
in
24VDC)
RS-232 max 25 mA
U
out
2 x 0...1V / 0...5V / 0...10V max 25 mA
I
out
2 x 0...20 mA max 60 mA
display and backlight + 20 mA
during sensor purge + 110 mA max
Analog outputs (2 standard, 3rd optional)
current output 0 ... 20 mA, 4 ... 20 mA
voltage output 0 ... 1 V, 0 ... 5 V, 0 ... 10 V
Accuracy of analog outputs at 20 °C 0.05 % full scale
Temperature dependence of the
analog outputs ± 0.005 %/°C full scale
External loads
current outputs R
L
< 500 ohm
0 ... 1V output R
L
> 2 kohm
0 ... 5V and 0 ... 10V outputs R
L
> 10 kohm
Max wire size 0.5 mm 2 (AWG 20) stranded wires recommended