Emerson MICRO MOTION 1500, Configuration And Use Manual, Page: 136 / 282

126 Micro Motion Series 1000 and Series 2000 Transmitters
Custody Transfer
11.4 Special restrictions when using custody transfer transmitters
Some of the transmitter’s functionality is restricted when it is ordered with a custody transfer
configuration. These restrictions include:
• Restricted I/O – The inputs/outputs of your transmitter may be disabled or their use may be
restricted. Therefore, certain functionality described in this manual may not be available. The
behavior of the transmitter’s outputs differs depending on whether the transmitter is in secure
mode or security breach mode (see Sections 11.6 and 11.7).
• Locking clamps – The Model 2700 transmitter can be ordered with locking clamps (see
Figure 11-1) so that a weights and measures authority can mechanically seal the housing
against unauthorized access. If your transmitter is equipped with locking clamps, you may not
be able to open the housing.
Figure 11-1 Model 2700 transmitter with locking clamp
• Alarm password – Transmitters configured for OIML compliance may require a password
when accessing the alarm menu on the display. Compliance with PTB type approval under
German law for custody transfer of gas requires the alarm menu password to be enabled.
11.5 Switching between security breach and secure mode
Secure mode is enabled and disabled with ProLink II software. To switch between secure and security
breach modes, choose
Plugins > Enable/Disable Custody Transfer
. In addition, a hardware seal
may be used by a weights and measures authority.
Note: If this option is not available in ProLink II, it means the transmitter was ordered without the
custody transfer configuration.
11.6 Security breach mode
The transmitter leaves the factory with an active alarm (code A027). This alarm indicates a security
breach. In other words, the transmitter is not yet secure for custody transfer. This allows the operator
or a weights and measures authority to perform essential transmitter configuration before “locking”
the transmitter into secure mode.
If the transmitter has a status LED, the LED will flash red when the transmitter is first started,
indicating that the transmitter is in security breach mode. After the alarm is acknowledged, the status
LED will be solid red, and will remain solid red until the transmitter is secured.