5 usb sample processor and robotic titrosampler – Metrohm 840 PC Control 5.0 / Touch Control User Manual

Page 70

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3.10 Device manager

58

PC Control / Touch Control

For the Measuring inputs the ADC type (Analog-Digital Converter)

and Serial number of the measuring interface are shown.

Select the Sensor type for the temperature sensor used at this

measuring input. If you use an NTC sensor then you must set two

further parameters that can be obtained from the technical

specifications of the sensor: the nominal resistance at 25 °C

(R (25 °C)) and the B value referring to measurements of the

resistance at 25 °C and 50°C. The default values apply to Metrohm

sensors with an NTC sensor. If no B-value is given for your sensor

then you can retain the default value. B-values of other NTC sensors

are frequently based on different reference temperatures (usually

25 °C / 50 °C – 100 °C). When entering the B-value the influence of

the second reference temperature is negligible in comparison with

the measuring accuracy of an NTC sensor.

For the MSB connections you can define when the request to carry

out a preparation function (PREP command) for the connected dosing

devices is to be displayed. The preparation of the exchange or dosing

unit is described in Section 3.24.2. For a description of the settings

please consult the online help.
The Dosing device type and the Serial number (for type 8xx dosing

devices only) are shown for the connected dosing devices.
The Stirrer type and Serial number are shown for the connected

stirrers.
No properties can be shown or edited for the connected remote

boxes.

3.10.5 USB Sample Processor and Robotic Titrosampler

Note!

The following settings apply to all USB Sample Processors.

The Robotic Titrosampler is a USB Sample Processor with a built-in

measuring input. The settings of the measuring input are described in

Section 3.10.4.
The tower (or the towers) and the devices at the MSB connections are

listed in a table for the USB Sample Processor that is connected. In

the following example a stirrer is connected to MSB 1 and a dosing

device to MSB 2. If the USB Sample Processor is not connected, only

the Device name and Comment can be edited.

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