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Hydran* 201i Instruction Manual
Force 100%
Table 5-7: Electrical Current Generated by the Analog Output for Each Operation Mode
The maximum value of the Hydran 201Ci-1's display scale is 1999 ppm. If the signal
is over scale, the display indicates 1... when the operation mode is set to Force 100 %.
5.5.7.5
TDM Out
• TDM State: Displays the state of the Hydran 201Ti's TDM signal, in percentage.
-
Used with the H201Ci-1 Controllers only, the TDM signal is integrated to the
supervisory link and is used to transmit the state of the H201Ti's alarm relays
and analog output. Only one pair of wires is necessary to transmit this
information. For details on the supervisory link, see Section 10.1.
-
The TDM signal relates to the gas level being measured. The displayed
percentage is thus directly proportional to the gas level (%output=ppm/20;
2,000 ppm = 100 %).
• TDM Mode: Is used to set the operation mode of the TDM signal. The three Force
x % modes are used only to test the operation of the Hydran 201i System.
5.5.8
New Sensor Submenu (Extended Menu Only)
The NewSensor submenu is used to:
• Set the Hydran 201 sensor parameters.
• Install a new H201 sensor.
This submenu is very similar to the Service;SensorCal Data submenu (see
Section 5.5.4.1), except that in the latter submenu the parameter values cannot be
changed.
The NewSensor command requires password No. 2.
immediately tested and the result (Good or else) is displayed after three seconds. For
details, see Section 5.5.4.2.
CAUTION
5.5.9 Calibration Submenu (Extended Menu Only)
The Calibration submenu is used to calibrate:
• The three analog inputs:
-
The Hydran 201 sensor signal.
-
The H201 sensor temperature.
MA-033
Rev. 14.0, 12-Nov-18
20.00 ± 0.40 mA
Use this submenu only to install a new H201 sensor, because it
changes the "Service; ServiceData" parameters. These
parameters are used to evaluate the state of the H201 sensor.
1999 ppm
a
The H201 sensor is then
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