Vaisala HMW90 - Manual (Page 23)

Chapter 3 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 21
CHAPTER 3
INSTALLATION
This chapter provides you with information that is intended to help you
install the HMW90 series transmitters.
Configuration Before Installation
If you need to change the settings of the transmitter, it is best to do this
before it has been installed. Available configuration options are different
for analog output models (such as HMW93) and digital output models
(for example, HMW95).
Configuration of Analog Output Models
You can configure analog output models of HMW90 series transmitters
in two ways:
- Using the DIP switches (and rotary switch on the HMW93 and
TMW93) on the component board. See the following sections for
instuctions:
- DIP Switches of Analog Output Models on page 22
- Relay Configuration in DIP Mode on page 23
- Configuring the settings in software through the service port. See
connection instructions and serial line commands in Chapter 4,
Operation, on page 35.
These two configuration methods are mutually exclusive. If the DIP
switch configuration is used, software settings have no effect on settings
that are controlled by the DIP switches. DIP switch number 8 is the
master switch that controls which configuration method is used.