Hach Ultra ORBISPHERE 510, Руководство оператора

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Orbisphere 510/511/512 Analyzers - Measurement Menu 47 of 138
Operator Manual
ORBISPHERE
4.2 Measurement Configuration
4.2.1 EC Sensor
4.2.2 TC Sensor
Sensor’s membrane number selection
Medium: Liquid or gas phase.
Gas unit type: Partial, Fraction, Dissolved.
Gas unit *: The list of available units depends on unit
type selected above.
Liquid: When the medium is liquid, select water or a
liquid with a different solubility (if available).
Note:
* This is the gas concentration measured by the EC sensor. When a composite unit is
selected (e.g. ppm ppb) the unit will change depending on the range of the value to
display.
Display resolution: Maximum resolution depends on gas, membrane and unit. A
maximum of 5 digits can be displayed. Decimals can be limited to 0, 1, 2 or 3
decimals for easier reading. That does not affect the actual resolution of data
measured and stored, but only the data displayed.
Thermal cutoff: To protect the sensor, the thermal cutoff function allows for setting a
sample high temperature limit. If exceeded the electrical signal to the sensor is cut
off, 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
cutoff temperature.
- Thermal cut off options: Disabled / enabled.
- Thermal cut off temperature: To be set according to conditions.
The measurement configuration for a TC sensor is the
same as for an EC sensor with the addition of one extra
selection criteria:
Purge gas: From the drop-down list, select the purge
gas being used for the TC sensor.