Emerson 3-9000-771A Manuel D’Utilisation
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:
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:
Module Write PROT. switch as follows:
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.
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)
B. 24V Loop power
C. 2 Ampere fuse (used for the main power input)
C.