Vaisala INTERCAP HMDW80 Series - Chapter 5 Troubleshooting; Problem Situations; Table 7 Possible Problem Situations and Their Remedies

User's Guide _______________________________________________________________________
40 ___________________________________________________________________ M211510EN-E
CHAPTER 5
TROUBLESHOOTING
This chapter describes possible problems, their probable causes and
remedies, and provides contact information for technical support.
Problem Situations
Table 7 Possible Problem Situations and Their Remedies
Problem
Probable Cause and Remedy
Transmitter outputs an
incorrect humidity reading.
1. Models with probes: check if the yellow
transport protection cap has been left over
the probe. Remove it if present.
2.
Models with configurable output parameter:
check that the desired output parameter
has been selected using the DIP switches.
Temperature reading shown
by the transmitter is too high.
1. The transmitter may be installed in an
unsuitable location, for example, near a
heat source or in sunlight. Use a portable
reference meter to check this.
2. HMW82 and HMW83: Check that the
transmitter is installed in proper orientation,
with the arrow on the mounting base
pointing up.
Current output on the
temperature channel is
~24 mA.
Check that the humidity output channel is
powered. Loop powered HMDW80 series
models that have humidity measurement
require that the humidity output channel is
connected, even if only measuring
temperature.
Analog output reading is
unchanging and incorrect.
The analog output channel may be in an
error state. See section Analog Output Error
State on page 41.