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4.4 Temperature control
The DVNext Rheometer provides the ability to control the temperature of a connected AMETEK Brookfield
temperature control device such as the Thermosel (HT-106 controller) and water baths with SD or AP controllers (for
example: TC-550SD). The Thermosel or water bath can then be used to control the temperature of the sample under
test.
The DVNext connects to the temperature control device through a dedicated communication cable. The Thermosel
requires cable DVP-141. The water baths require cable DVP-207. These cables are available from AMETEK Brookfield.
When configured for control of a temperature control device, the DVNext may have two temperature inputs:
•
The temperature probe supplied with the DVNext (DVP-94Y, CPA-44PYZ, or SC4- 13RPY) and
•
The temperature probe supplied with the temperature control device (water bath or Thermosel).
Only one temperature probe can be used for display of live temperature, control, and data collection. Select the
probe to be used in the Temperature menu (see Figure 4-3).
Temperature control must be initiated each time the DVNext is powered on. Be sure that the temperature control
device is powered on prior to initiating communication. Choose Device Setup in the Settings menu. Choose
Temperature and the Temperature menu will appear (see Figure 4-4). Temperature Offset is described in Section
4.4.`
Select Temperature Controller and you will be presented with the Default Temperature menu (see Figure 4-4). This
menu allows the user to 1) initiate communication with the temperature controller and 2) set a default temperature.
Initiate temperature control by pressing the Test Connection. The connection status will be confirmed with a message
box and the appearance of the bath icon in the status bar (see Section 2.3).
The Default Temperature is the temperature value that the control device will return to at the conclusion of a Test.
This value is set only if the check box is checked. When the check box is unchecked, the temperature controller will
hold at the last set point used in the Test.
TIP: When a test involves several temperature set points, set the Default Temperature to the first set point used in
the Test. This will reduce the transition time from one Test run to the next Test run.
Note that temperature controllers can also be controlled through the RheocalcT software when they are connected
to the computer using the proper cable. The Thermosel requires the HT-106 cable (RS-232), available from AMETEK
Brookfield. The water bath requires the 225-173 cable (RS-232), which comes with the bath.
M19-2101 REVISION 2.0
Figure 4-3
D V N E X T R H E O M E T E R - O P E R AT I O N A L M A N U A L
Figure 4-4
53
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