Vaisala HMD70U Service Manual Page 93

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Technical Data
Measured Values
WATER ACTIVITY
Measurement range a
w
0 ... 1
Accuracy (including nonlinearity, hysteresis and repeatability)
0 ... 0.9 ±0.02
0.9 ... 1.0 ±0.03
Response time (90 %) at +20 °C in still oil
(with stainless steel filter) 10 min.
Sensor HUMICAP
®
Performance
TEMPERATURE
Measurement range
MMT332 -40 ... +180 °C (-40 ... +356 °F)
MMT337 -40 ... +180 °C (-40 ... +356 °F)
MMT338 -40 ... +180 °C (-40 ... +356 °F)
Accuracy at +20 °C (+68 °F) ± 0.2 °C (0.36 °F)
Operating Environment
Operating temperature
for probes same as measurement ranges
for transmitter body -40 ... +60 °C (-40 ... +140 °F)
with display 0 ... +60 °C (+32 ... +140 °F)
Pressure range for probes See probe specifications
Complies with EMC standard EN61326-1, Electrical equipment for
measurement, control and laboratory use - EMC requirements;
Industrial environment.
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
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
Digital outputs RS-232, RS-485 (optional)
Protocols ASCII commands, MODBUS RTU
Service connection RS-232, USB
Relay outputs 0.5 A, 250 VAC, SPDT, Potential Free (optional)
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)
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
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. 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, graphic
trend display of any parameter
Display menu languages English, Chinese, Spanish, German,
French, Japanese, Russian, Swedish,
Finnish
Mechanics
Cable bushing M20x1.5 for cable diameter 8 ... 11mm/0.31 ... 0.43”
Conduit fitting 1/2”NPT
Interface cable connector (optional) M12 series 8 pin (male)
option 1 with plug (female) with 5 m / 16.4 ft black cable
option 2 with plug (female) with screw terminals
USB-RJ45 Serial Connection Cable
(incl. Mi70 Link software)
219685
Probe cable diameter 5.5 mm
Probe cable lengths 2 m, 5 m or 10 m
Housing material G-AlSi 10 Mg (DIN 1725)
Housing classification IP 65 (NEMA 4X)
Sensor protection Stainless steel grid standard filter/
Stainless steel grid filter for high flow rates (>1 m/s)
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