Hach-lange ORBISPHERE KM1100 Basic User Manual Manuel d'utilisateur télécharger pdf (Page 16)

Option Description

T cut off If this temperature is exceeded the measurement session is suspended and the system

displays a HOT alarm message. The system resumes when the temperature drops to

90% of the specified temperature. It is recommended to Enable this feature to maximize

sensor life and system performance.

T cut off value Set to 5°C above the sample temperature.

Measurement advanced configuration

Note: The offset feature described below should be used for minor measurement adjustments only, and not as an

alternative to a sensor calibration. Make sure your sensor has been correctly calibrated before applying this feature.

1. Select the Advanced button on the Measurement configuration screen:

Option Description

Offset enabled Check this box to enable the user measurement offset option. If checked enter an

offset value or a target value:

Offset value Enter an offset value to manually adjust the measurement value. If the gas unit type

or gas unit (defined in the Measurement configuration screen) are changed the

offset value is automatically reset to zero.

Measurement This field cannot be updated. It shows the current measurement value with the offset

applied.

Target value Enter a target measurement value. The offset value is automatically computed so the

displayed measurement value will be equal to the target value.

Compute offset Select this button to recompute the offset value at any time during the measurement

process. The offset value will be computed based on the current and target

measurement values.

Out of range

protection

Check this box to enable the out of range protection (recommended). When enabled

and the measured value exceeds the instrument specification, the measurement

interval will be increased to 1 minute to protect the lifetime of the sensor spot. If

disabled, the lifetime of the spot can be negatively impacted if the sensor is exposed

to high oxygen concentrations for long periods of time.

Measurement

interval

Set the value to between 2 and 60 seconds to define the interval for refreshing the

measurement value on the display.

Ext. pres. sensor The external pressure sensor option is not available.

Measurement alarms configuration

Set the thresholds for the low/high concentration levels according to the application.

1. Select the Alarms button on the Measurement configuration screen:

Option Description

Low Low 2nd stage for too low concentration alarm.

Low 1st stage for too low concentration alarm.

High 1st stage for too high concentration alarm.

High High 2nd stage for too high concentration alarm.

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Hach-lange ORBISPHERE KM1100 Basic User Manual Manuel d'utilisateur Page 16

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