Panametrics DewPro MMR30, Руководство по установке и эксплуатации

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Chapter 4. Optional Display/User Interface
22 DewPro® MMR30 Installation & Operation Manual
4.4.3 Setting the Output Range for the Humidity 4-20 mA Output (cont.)
3. Calibrating the Current Output
Table 13:
Location in
Matrix Description of Function
VH
38
VH
39
These locations are used to calibrate the 4 mA and
20 mA settings of the humidity output current loop.
This output comes calibrated from the factory and
should not normally need adjustment. To check the
setting, connect a current meter in series with the
power terminals for loop (see Chapter 3). Move to
matrix location VH 38. The output will automatically
change to the 4 mA setting. Adjust as necessary
using the “+” and “-” keys. Move to location VH 39.
The output will automatically change to the 20 mA
setting. Again, adjust as necessary. Move to any
other matrix location to return the output to normal
operation.

Note
: If the matrix input is locked (VH 89), the
calibration values are displayed but the current
output is unaffected.
4.4.4 Temperature Measurement Functions
CAUTION!
The standard MMR30 does not offer a temperature measurement output. The second
analog output is only available at special request. These functions only apply to this
special version.
1. Displaying the Measured Temperature
Table 14:
Location in
Matrix Description of Function
VH
40
Selecting this location displays the present process
temperature. The unit of measure (°C/°F) is the unit
selected in location VH 41 (see Table 1 on page 16).
The bar graph displays the percentage of output
for the programmed output range.
2. Selecting the Temperature Unit
Table 15:
Location in
Matrix Description of Function
VH
41
This location allows the user to select either °C or °F
as the temperature measurement unit to be
displayed in location VH 40. Setting this location to
“0” selects °C, and setting to “1” selects °F.

Default: 0