Vaisala HUMICAP HMP41 User's Guide Page 15

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Chapter 2 __________________________________________________________ Product Overview
VAISALA _______________________________________________________________________ 13
CHAPTER 2
PRODUCT OVERVIEW
Thank you for choosing the Vaisala HUMICAP® Humidity and
Temperature Transmitter Series HMT130. This chapter introduces you to
its features.
The Vaisala range of relative humidity measurement instruments covers
all the applications from ventilation to process control in demanding
conditions. For more information about other Vaisala relative humidity
instruments, please contact your Vaisala representative or visit
www.vaisala.com.
Introduction to the HMT130
The Vaisala HUMICAP
®
Humidity and Temperature Transmitter Series
HMT130 measures relative humidity and temperature and outputs the
measurements to voltage outputs and RS-485. Other quantities, such as
dewpoint (Td) can be calculated from the basic RH and T values
according to the device configuration. HMT130 is powered with a
10 ... 35 VDC or a 24 VAC supply (15 ... 35 VDC or 24 VAC required
when using 0 ... 10 V output). It outputs two analog voltage signals with
nominal 0 ... 10 V range. HMT130 has also an RS-485 digital interface
and a relay.
HMT130 transmitter's output quantities are configurable. Available
quantities for outputs are limited to two at the time. These two quantities
can be used freely at any outputs (display, service port and voltage
outputs).
Available quantities are RH, T, Td, Td/f, a, x, h, Tw, pws and pw.
The default output quantities are set at the factory during order time.
These factory preset quantity selections can be changed afterwards via
the service port if necessary.
The HMT130T and HMT130H models are single-parameter transmitters.
The only output quantity of HMT130T is temperature. The output of the
HMT130H can be configured to be any one of the humidity-related
quantities (RH, Td, Td/f, a, x, h, Tw, pws and pw).
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