Vaisala HMD60 Series - Introduction to HMD60 Series; HMD65 Basic Features and Options

Introduction to HMD60 Series
The duct mounted HMD60 HUMICAPâ Humidity and Temperature Transmitters are designed
for monitoring humidity and temperature in demanding HVAC and light industrial applications.
HMD60 series transmitters provide stable, reliable, and highly accurate (up to ±1.5 %RH and
±0.1 °C (0.18 °F)) measurements, and are resistant to chemicals and dust.
HMD60 series transmitter options include the HMD62 and TMD62 analog output transmitters
with loop powered 4 … 20 mA current output, and the analog and digital output transmitter
HMD65 with analog voltage output (0 … 10 V) and digital Modbus RTU and Bacnet output
(RS-485).
Thanks to easy access to electronics also when the transmitter is installed to a duct,
configuration and adjustment can be carried out quickly and conveniently. Available
configuration and adjustment interface options range from physical trimmers and DIP switches
on the transmitter's circuit board to Modbus, BACnet, and Vaisala Insight PC software for
Windowsâ.
HMD65 Basic Features and Options
• Humidity and temperature measurement:
• available humidity parameters: RH, T
d
, T
df
, A, X, T
w
, H
• T measurement in °C or °F
• Analog output: 2 analog 0 … 10 V output channels for humidity and temperature
measurements
• Digital output (RS-485): Modbus RTU and BACnet MS/TP
• Power supply input: 15 … 35 VDC / 16 … 24 VAC
• Configuration and adjustment options:
• RH and T measurement field adjustment with trimmers
• Humidity output parameter selection and Modbus/BACnet serial setting configuration
with DIP switches
• Configuration and adjustment with Vaisala Insight PC software
• Configuration with Modbus and BACnet
• Field adjustment with MI70 hand-held indicator
Output Parameter Scaling
• Default temperature analog output scale: -20 … +80 °C (-4 … +176 °F)
• Default scaling for humidity parameters: see Table 2 (page 15).
• To change the default scaling of an analog output parameter, use Vaisala Insight PC
software. See the instructions in HMD65 User Guide.
More Information
For more detailed instructions for installing, configuring, and maintaining the HMD60 series
transmitters, see HMD62 and TMD62 User Guide in English M212016EN and HMD65 User Guide
in English M212243EN available at www.vaisala.com/HMD60.
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