Introduction To The Hmt140; Models - Vaisala HMT140 User Manual

Introduction to the HMT140

Introduction to the HMT140
The Vaisala HMT140 Wi-Fi Data Logger measures relative
humidity and temperature using the connected probe and
analog signals – RTD, Voltage, Current Loops and Boolean
Contacts. It is powered with three 3.6 volt DC batteries (or
an optional 9-30VDC power supply), outputs data via
wireless transmission, and comes with or without an
optional LCD display.
The HMT140 supports several different signal measurements
(channels), which are monitored in viewLinc:
• Relative Humidity (RH)
• Temperature (T)
• Switch Contact
• Voltage and Current.
Channel types are set at the factory during time of order.
Other wireless parameters can be changed at a later date
using an HMT140 Configuration Cable and HMT140 Utility
software.

Models

The following HMT140 models and options are available:
• HMT141: Vaisala Humicap Humidity and Temp Probe
(RH/T)
• HMT143: Dual RTD Temperature Inputs w/5M Probes
(-90C to 90C)
• HMT144: Voltage Inputs (0-5 VDC)
• HMT145: Voltage inputs (0-10 VDC)
• HMT146: Current Inputs (0-20 mA)
• HMT147: Boolean Inputs
• HMT148: RTD Temperature Input w/5M Probe &
Boolean Input
•
HMT14C: RTD Inputs (customer-supplied Probe)
HMT14D: RTD and Current Inputs
•
HMT14E: RTD and Voltage Inputs (0-5 VDC)
•
HMT14F: RTD and Voltage Inputs (0-10 VDC)
•
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