Vaisala HMT140 - Manual (Page 16)

Introduction to the HMT140
8 VAISALA
Introduction to the HMT140
The Vaisala HUMICAP® Humidity and Temperature
Transmitter HMT140 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 transmitter
and comes with or without an optional LCD display.
The HMT140 transmitter 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
Options and Accessories
Humidity & temperature probe HMP110*
Humidity & temperature replacement probe HMP110R*