Daniel 3818 LNG Liquid Ultrasonic Meter Installation Manual

Section 3: Electrical installation

3-9000-771 Rev A

May 2012

 

 

 

3.6.5DHCP 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:

Table 3-6 DHCP server switch settings

CPU Module switch

DHCP server disabled

DHCP server enabled

 

 

 

DHCP

OFF

ON

 

 

 

3.6.6Configuration protect switch settings

The meter’s configuration parameters and firmware can be protected against changes via CPU Module Write PROT. switch as follows:

Table 3-7 Configuration protect switch settings

CPU Module switch

Configuration protected

Configuration unprotected

 

 

 

WRITE PROT.

ON

OFF

 

 

 

A complete list of write-protected parameters are in Appendix A.

3.6.7External 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

C.A.B.

A. Power In connector (main power)

B. 24V Loop power

C. 2 Ampere fuse (used for the main power input)

DHCP server switch settings

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