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Daniel 3818 LNG Liquid Ultrasonic Meter Installation Manual Section 3: Electrical installation
3-9000-771 Rev A May 2012
DHCP server switch settings 53
3.6.5 DHCP server switch settings
The meter can be configured to act as a DHCP server. The DHCP server is enabled/disabled via
CPU Module DHCP switch as follows:
3.6.6 Configuration protect switch settings
The meter’s configuration parameters and firmware can be protected against changes via CPU
Module Write PROT. switch as follows:
A complete list of write-protected parameters are in Appendix A.
3.6.7 External power source connection and fuse
Located inside the Transmitter Electronics Enclosure is a connector for a user-provided external
power source, a 2 Ampere fuse and a 24V loop power connection for ultrasonic meter analog
outputs, temperature or pressure transmitter devices. The current is limited to 88mA.
Figure 3-7 CPU Module power source connections
Table 3-6 DHCP server switch settings
CPU Module switch DHCP server disabled DHCP server enabled
DHCP OFF ON
Table 3-7 Configuration protect switch settings
CPU Module switch Configuration protected Configuration unprotected
WRITE PROT. ON OFF
A.
B.
A. Power In connector (main power)
B. 24V Loop power
C. 2 Ampere fuse (used for the main power input)
C.