Technical Data
Operating Environment, DMT345 and DMT346
Mechanical durability up to +180 °C (+356 °F) for DMT345
of probes up to +350 °C (+662 °F) for DMT346
of 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 slight pressure difference (~ 200 mbar)
Measured gases non-corrosive gases
Electromagnetic compatibility Complies with EMC standard
EN61326-1, Industrial environment
Note: Transmitter with display test impedance of
40 ohm is used in IEC61000-4-5 (Surge immunity)
Measured Variables DMT346
DEW POINT DMT346
Sensor Vaisala DRYCAP
®
180S
Measurement range -25 ... +100 °C (-13 ... +212 °F) Td
Accuracy ±2 °C (±3.6 °F) Td
See the accuracy graph below
Dew point accuracy vs. measurement conditions
Response time 63% [90%] flow rate 1 l/min and 1 bar pressure
from dry to wet 5 s [10 s]
from wet to dry including auto-calibration 45 s [5 min]
MIXING RATIO DMT346
Measurement range (typical) 0 ... 1000 g/kg (0 ... 7000 gr/lbs)
Accuracy (typical) ±12% of reading
Inputs and Outputs, DMT345 and DMT346
Operating voltage 10 ... 35 VDC, 24 VAC ±20%
with optional power supply module 100 ... 240 VAC 50/60 Hz
Default start-up time
initial reading after power-up 3 s
full operation after sensor purge and autocalibration about 6 min
Power consumption @ 20 °C (U
in
24 VDC)
U
out
2x0 ... 1V/0 ... 5V/0 ... 10V max. 25 mA
I
out
2x0 ... 20mA max. 60 mA
RS232 max. 25 mA
display and backlight + 20 mA
during sensor purge max. + 110 mA
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
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
Digital outputs RS232, RS485 (optional)
Protocols ASCII commands, MODBUS RTU
Service connection RS232, USB
Relay outputs 2+2 pcs (optional) 0.5 A, 250 VAC, SPDT
Ethernet interface (optional)
Supported standards 10BASE-T, 100BASE-TX
Connector 8P8C (RJ45)
IPv4 address assignment DHCP (automatic), static
Protocols Telnet, MODBUS TCP/IP
WLAN interface (optional) DHCP (automatic), static
Supported standards 802.11b
Antenna connector type RP-SMA
IPv4 address assignment DHCP (automatic), static
Protocols Telnet, MODBUS TCP/IP
Security WEP 64/128, WPA WPA2/802.11i
Authentication / Encryption (WLAN)
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. four 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, graphical trend display
Menu languages English, Chinese, Finnish, French, German,
Japanese, Russian, Spanish, Swedish
Mechanics, DMT345 and DMT346
Cable bushing M20x1.5 for cable diameter
8 ... 11mm/0.31 ... 0.43"
Conduit fitting (optional) 1/2"NPT
User cable connector (optional) M12 series 8-pin (male)
option 1 female plug with 5 m (16.4 ft.) black cable
option 2 female plug with screw terminals
USB-RJ45 Serial Connection Cable 219685
Probe cable diameter 5.5 mm
Standard probe cable lengths 2 m, 5 m or 10 m
(Additional cable lengths available, please
see order forms for details)
Housing material G-AlSi 10 Mg (DIN 1725)
Housing classification IP 66
IP65 (NEMA4X) with local display
Weight
depending on selected probe, cable, and modules 1.0 – 3.0 kgs
Dew point temperature (°C)
(14 paginas)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentarios a estos manuales