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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*

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Vaisala HMT140 Guía de usuario Pagina 16