Enclosure – Liquid Controls Sponsler IT400 Electronic Register User Manual
Page 17
Liquid Controls
Sponsler, Inc.
IT400 Remote Totalizer & Rate Indicator
Page: 14
DOC#: MN-IT400-R2d.doc
• Internal Battery
External
DC
functions either as a primary power source or as a backup to either of the
external power sources. Battery life estimates are in the Power Mode chart below and are
affected by the options enabled. The battery may be replaced at any time with the only side
effect being a loss of normal operation (all calibration and configuration information is
maintained). Total, Grand Total, and service hours may be saved at any time by activating the
Grand Total display or by entering the menu system. Upon system startup, the saved values
will be retrieved.
Loop
Isolation
Battery
Powered
SW5-1 SW5-2 SW5-3
Main
IT400
Power
Modulated
Carrier
Power
Yes
Yes*
No
Off
Off
On
External
External
No
No**
No
On
On
On
Loop
Loop
No
No**
Yes
On
On
Off
Battery
Loop
*For External power, the loop isolation switches SW5-1, 2 must be “Off” (isolated).
** Loop powered operation; the loop isolation switches SW5-1, 2 must be “On” (non-isolated).
• Power Mode
Mode
: controls the refresh rate of both the display and outputs of the IT400 and is a
user selectable menu item. Refresh times and approximate battery life are in the following
table:
Refresh
Input frequency
Approximate
Battery (years)
1
16 refreshes/s
0
500
2
8 refreshes/s
0
500
3
4 refreshes/s
0
6.5
500
3.2
4
1 refreshes/s
0
500
5
2s/refresh
0
500
*Battery life calculations are worst case based on continuous flow, enabled linearizer,
temperature compensator, 4-20mA output, and pulse output.
Enclosure
The IT400 is contained in an explosion proof enclosure. This enclosure is typically meter mounted
via a union or a temperature extension (consult factory for lengths and applications). There is
typically a short cable (4 feet) that connects the IT400 to an external temperature probe (a few inches
downstream). Rigid conduit is recommended for this connection to maintain the explosion proof
rating of the enclosure and to maintain CE marking.