Vaisala HMM170 Guía Rápida página 5

HMM170 Quick Guide
Vaisala HUMICAPâ Humidity and Temperature Module HMM170 is an open frame OEM
transmitter for integration into demanding environmental chambers and harsh conditions. The
module provides a digital RS-485/Modbus RTU and three freely configured analog output
channels.
Table 1 Inputs and outputs
Property
Three analog outputs (selectable and scalable)
Typical accuracy of analog output at +20 °C
(+68 °F)
Typical temperature dependence of analog
output
External load
Digital output
Service port
Start-up time
Wire size
Supply voltage
when condensation prevention and chemical
purge features are not used
all features available
Power consumption
Analog outputs
Chemical purge at 24 VDC
Warmed probe at 24 VDC
Table 2 Operating environment
Property
Operating temperature for component board
Operating humidity for component board
Storage temperature
Operating pressure
Description/value
0 ... 20 mA, 4 ... 20 mA
0 ... 1 V, 0 ... 5 V, 1 ... 5 V, or 0 ... 10 V
±0.05 % full scale
0.005 %/˚C (0.003 %/°F) full scale
R < 500 Ω
L
RS-485 serial, Modbus
M8 connector for USB cable
3 s at power-up
2
0.5 ... 1.5 mm (20 ... 16 AWG)
12 ... 35 VDC
18 ... 35 VDC or 24 VAC ±10 %
12 mA (voltage), 50 mA (current)
+220 mA
+240 mA
Description/value
−40 ... +60 °C (−40 ... +140 °F)
0 ... 100 %RH, non-condensing
−55 ... +80 °C (−67 ... +176 °F)
0 ... 10 bar
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