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Hydran* 201i Instruction Manual
Display
(Alarm set point)
Gas Level
xxx PPM
Hourly Trend
+xx/24h
Daily Trend
+xx/30d
(Date)
a
(Time)
a: The H201i's clock is set at the factory. Local time may differ from the displayed time; to set it see
Section 7.2.3.
b: Sensor exposed to air; for example during initial verification or the installation.
5.2.3 Menu Navigation Mode
The Menu Navigation mode is used to access the Main Menu or the Extended Menu,
and thus to all H201Ti's parameters and commands without requiring the use of a host
computer.
• The Main Menu gives access to the most frequently used parameters and
commands.
• The Extended Menu gives access to all parameters and commands.
Note: The H201Ti automatically returns to the Main Display mode if the keypad is not used
for five minutes.
Each submenu of the Main Menu and Extended Menu is described in detail in Section
5.5.
5.2.4 Parameter Modification Mode
The Parameter Modification mode is accessed by pressing the CHANGE key when an
adjustable parameter is displayed. In the Main Menu, a password is then requested; in
the Extended Menu, a password is requested only for parameters requiring password No.
MA-033
Rev. 14.0, 12-Nov-18
and if the alarm condition is still present. See Section 5.2.1.
• Gas level measured by the Hydran 201 sensor
• Range: 0 to 2,000 ppm
• Initial value
: 0 to 20 ppm
b
• Variation in ppm of the gas level for a period in hours.
• Period adjustable from 1 to 99 hours.
• Initial value
: 0 ppm/24 hours (default value of the period)
a
• Variation in ppm of the gas level for a period in days.
• Period adjustable from 1 to 99 days.
• Initial value
: 0 ppm/30 days (default value of the period)
a
Date (year-month-day format)
Time (24 hour format)
Table 5-1: Messages Displayed in the Main Display Mode
Description
Page 59
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