GE Hydran 201i Instruction Manual page 76

• Read the state of the alarm relays: On or Off.
• Set the operation mode of the three alarm relays.
• Select the triggering conditions of the fail alarm (FaultTrig.).
• Read the state of the analog output and TDM signal (in %).
• Set the operation mode of the analog output and TDM signal.
5.5.7.1 Gas H Relay
• RelayH State: Displays the status of the High alarm relay. The two possible
states are explained in Section 11.2.2.
• RelayMode: Is used to set the operation mode of the High alarm relay. The four
operation modes are explained in Section 11.2.3.
5.5.7.2 Gas HH Relay
• Relay HH State: Displays the status of the High-High alarm relay. The two
possible states are explained in Section 11.2.2.
• RelayMode: Is used to set the operation mode of the High-High alarm relay. The
four operation modes are explained in Section 11.2.3.
5.5.7.3 SysOK Relay
• SysOK State: Displays the status of the fail alarm relay. The two possible states
are explained in Section 11.2.2.
• RelayMode: Is used to set the operation mode of the fail alarm relay. The four
operation modes are explained in Section 11.2.3.
• FaultTrig.: Is used to set to Off or On each fail alarm condition. For details, see
Section 11.5. Press CHANGE to turn on a condition (an asterisk [*] is then
displayed at the right of the parameter's name) or turn it off (only the parameter's
name is displayed).
5.5.7.4 AnalogOut
• AnalogState:
percentage of the maximum electric current. The analog output provides the gas
level being measured; the displayed percentage is thus directly proportional to
the gas level. For details on the analog output, see Section 3.5.2.
• AnalogMode: Is used to set the operation mode of the analog output. The three
Force x % modes are used only to test the operation of the Hydran 201i System.
Table 5-7 shows the electrical current generated for each mode.
Operation Mode
Force 0%
Force 50%
Page 76
Displays the state of the Hydran 201Ti's analog output in
Analog 4–20 mA Output
4.00 ± 0.10 mA
12.00 ± 0.20 mA
Hydran* 201i Instruction Manual
Hydran 201Ci-1 Display
0 ± 2 ppm
1000 ± 5 ppm
MA-033 Rev. 14.0, 12-Nov-18