Red Seal Measurement Neptune RML2000 - Display, Keypad, and Temperature Compensation

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3.3. Display
The 2x20 character LCD display is primarily intended to
show the volume of product being delivered. The two-line
display conguration also allows two parameters to be shown
simultaneously, such as delivered volume and price during
delivery or net and gross volume during calibration. The
display is also the method by which the E4000 communicates
instructions to operators as they navigate through the
software menus.
3.4. Keypad
The 4 button keypad is the method used to enter conguration data and select function options for the
E4000 register.
START/ENTER Conrms/accepts selected option on display
^ Increments the displayed character through the available character set
> Moves cursor to the right .
STOP/CANCEL Terminates delivery or exits current selection.
Pressing the up arrow on the control panel will scroll the selected character through a complete ASCI
character set (upper and lower case letters, all numerals and symbols). A space character is also included
in the character set. It is the fth character after the lowercase z and is located between the right facing
arrow and the exclamation point:
→, [space], !
Access the Weights and Measures functions by depressing the internal switch beneath the seal screw on
the side of the register and pressing the > button simultaneously.
3.5. Electronic Temperature Compensation (Optional)
A temperature probe is available as an option for electronic temperature correction of the delivered volume
of product. This correction is mandatory for some products under Weights and Measures legislation in
certain states and countries. The probe is a 100 ohm RTD. The E4000 measures the product temperature
during delivery and uses the approved API volume correction table for the product at that temperature.
The resulting calculation when applied to the gross volume gives a net volume corrected to 60
O
F or 15
O
C
depending on the chosen units or product (505 LPG/510 LPG).
The use of electronic temperature correction has been shown to reduce the amount of unmeasured
product by approximately 1% versus mechanical ATC. For uids without a recognized correction table,
approved formulas or expansion factors are used to calculate net volume. The RTD probe can be installed
in a Neptune meter, replacing the mechanical ATC bellows, or in the strainer cover.
Figure 3-3. LCD Display
Figure 3-4. E4000 Keypad