Service Submenu; Sensorcal Data - GE Hydran 201 i Instruction Manual

Chapter 4 • Hydran 201Ti's Displays and Menus
• SP Span (Extended Menu only): Temperature variation according to Temp SetPoint.
For example: the temperature varies between 30 and 40 °C (86 and 104 °F) if Temp
SetPoint is set to the recommended temperature of 35 °C (95 °F) and SP Span to 10 °C
(18 °F).
• Period A (Extended Menu only): Modulation period of the temperature variation.
• Period B (Extended Menu only): Reserved for General Electric Canada's personnel. If
the H201Ti is powered up after a power-down longer than five minutes, the Period B
ceases to affect the gas level fluctuations for two hours, whether its value has changed or
not.
• SP(Actual) (Extended Menu only): Current temperature set point.
• HeatPower (Extended Menu only): Current heating power (in %) of the heating plate.
• HeaterTemp (Extended Menu only): Current temperature (in °C) of the heating plate.
4.5.4

Service Submenu

The Service submenu allows the user to:
• Read the value of the Hydran 201 sensor parameters.
• Test the H201 sensor operation.
• Read the battery voltage.
• Set the parameters of the battery alarm.
• Read the service data of the H201 sensor.
4.5.4.1

SensorCal Data

This function gives access to the Hydran 201 sensor parameters. Each sensor has its own
set of parameter values; the values are indicated on the Test Certificate and Data Sheet
supplied with the Hydran 201Ti.
• SerialNumber: Serial number of the H201 sensor (engraved under the sensor
connector).
• B, M, N, S, A1, A2, A3, A4, A5 and A6: The ten parameters of the H201 sensor in a
normalized format (integer numbers).
– The H201Ti calculates the gas level in ppm by performing two readings: The H201
sensor temperature (provided by the thermistor incorporated in the sensor body) and
the sensor output (gas level). The calculation also requires these ten parameters (from
B to A6).
– These ten parameters characterize the behavior of the H201 sensor by modeling the
offset, linearity and sensitivity fluctuations of the sensor according to the temperature.
4-18 Rev. 6, March 2011 Part 17997