ROTRONIC MP400H - Manual (Page 8)

E-M-HM-V1_10
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
HygroMet MP Humidity Temperature
Meteorological Probe: User Guide Instruction Manual
Document Type
Page 8 of 19
Document title
© 2009; Rotronic AG E-M-HM-V1_10
configured, enabled or disabled
DEVICE SAFEGUARDS
Functions Description
► Device write protection
Used to protect the HygroMet with a password to prevent
unauthorized digital access by a digital user. Can be configured,
enabled or disabled
PROCESS PROTECTION AND PROTECTION OF OTHER DEVICES
AirChip 3000 Functions Description
► Limit humidity output to 100 %RH
This probe function is used to prevent the humidity signal from
exceeding 100 %RH when condensation forms on the sensor.
Can be enabled or disabled
► Out-of-limit value alarm
Used to specify the normal range for humidity, temperature and
the calculated parameter depending on the user application.
Can be configured, enabled or disabled
Out-of-limit values trigger a digital alarm which can be also be
seen on the optional display
► Bad sensor alarm
This is a built-in probe function. Cannot be disabled
A bad humidity or temperature sensor triggers a digital alarm,
provided that the HygroMet is set to monitor probe alarms
► Fail safe mode
Used to specify a "safe" fixed value for humidity and for
temperature (HygroMet or probe) in the event of:
o
Loss of communication with the probe (HygroMet function)
o Sensor failure (probe function)
Can be configured, enabled or disabled
4.3 Factory default settings
Configurable Settings
Factory default
Unit system (Metric or English) As per ordering code
Analog signal type (4…20 mA or other) As per ordering code
Psychrometric calculation As per ordering code
Fixed pressure value 1013.25 hPa or 29.92 In Hg
Output 1 parameter, scale and unit As per ordering code (%RH or other)
Output 2 parameter, scale and unit Temperature, unit as per ordering code
Communication protocol RO-ASCII
RS-485 address 0
Device name Instrument model
Functions Factory default
Humidity / temperature adjustment
Device write protection Disabled (HygroMet and probe)
Limit humidity output to 100 %RH Enabled (probe)