2. Product Overview
2.1 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.
2.2
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
2.3
Available Parameters and Default Scaling
HMD65 Measurement Parameters and Default Analog Output
Scaling
Table 3 (page 6) shows the available output parameters and the default analog output
scaling of the parameters for HMD65.
Chapter 2 – Product Overview
5