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Crystal Engineering Corporation
Differential.Temperature.(Temperature.versus.Temperature)
The nVision is capable of measuring differential temperature:
1
Modules Required: Two RTD100 temperature modules.
2
Change the display to the Differential Screen. This screen
is automatically activated when two similar modules
are present. You will find this screen just after the Dual
Module Numerical Screen.
3
Select the desired units for your upper and lower
modules and differential temperature using the Setup
menu.
4
Connect the nVision as shown.
5
You may equalize or TARE both RTD100 sensor elements
by subjecting them to the same temperature source (ex:
source A). The TARE may be implemented by pressing
the
button until (- - - - -) appears. To ensure that
you are subjecting both sensor elements to the same
temperature source it may be necessary to swap locations
to determine their repeatability. As with all temperature
measurement, adequate mixing of the media is essential
for quality measurements.
6
Move your RTD100 sense elements to your target
locations (ex: source A and B) and take or record
temperature readings as necessary.
7
Before disconnecting the nVision, isolate, disconnect and
return to service.
Calibration
If adjustment is required, we recommend returning the nVision or separate modules to the fac-
tory. Factory service offers benefits you won’t find anywhere else. We have the A2LA accredited
Calibration Laboratory facilities to test your nVision Reference Recorder at a variety of tempera-
tures utilizing NIST traceable standards, resulting in calibration certificates that provide per-
formance data over temperature. Furthermore, upgrades may be available to add or enhance
operating features. We designed the product to last, and we support it so that you can get the
most from your investment.
Under normal operating conditions, we recommend the nVision be calibrated on an annual
basis. Your quality system may require more or less frequent calibration, or your experience with
the gauge, or operating environment may suggest longer or shorter intervals.
A
B
A
B
Temperature:
Source
A
< Source
B
Differential Pressure
Equalization
Summary of Contents for nVision Lab Reference Recorder
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