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Thermo DCT7088 - 3.14 4-20 mA Submenu Configuration

Thermo DCT7088
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25
.....Other CALIBR submenu options
2. Date and Time setup menu (54): Use this menu to set the date and time in the flowmeters internal
clock. The time is expressed in military time (24-hour format), and the date is in the month-day-year
format (Figure 3.13-I, below). If you are NOT using UltraScan, set the time and date as follows:
a. Perform a Master Erase on the flowmeter according to Section 5.2 (page 45).
b. Reconfigure the flowmeter, and access Menu 54.
Performing a Master Erase and reconfiguring the flowmeter prior to changing
date or time prevents possible data corruption.
c. Press ENTER, and prompts are displayed, requesting entries for month, day, year and hour,
minute, second (Figure 3.13-J, below). Press ENTER after EACH entry.
d. To keep the current values displayed in any screen, scroll to the next screen with the DOWN
ARROW instead of pressing ENTER.
e. Once all parameters are entered, the new programmed date and time is displayed.
FIGURES 3.13-H THROUGH 3.13-J (LEFT TO RIGHT, TOP TO BOTTOM)
3.14 Additional Setup Menus Within the 4-20 mA Submenu
*Not included in the Quick Setup configuration
Within the 4-20mA submenu is the Current Loop Group menu (56) (Figure 3.14-A, page 26), which
contains 3 setup menus: Span, Cal., Test (menus 57 through 59).
The 4-20 mA current loop is factory calibrated and should not require field calibration prior to use. If
calibration and testing should become necessary, complete the following steps:
1. Connect a milliammeter to the input (IN) and output (OUT) terminals of the current loop module.
2. Access Menu 58 (Figure 3.14-B, page 26).
3. Press the RIGHT or LEFT ARROWS to adjust the 4 mA set point until the value reads exactly 4.00
mA on the milliammeter. Every 2 presses of the arrow key adjusts the calibration approximately .01
mA.

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