A1 15 DTR.APC.APR.ALW.03
(ENG)
Appendix MID
8. APC-2000ALW in MID application. Protection against unauthorized
manipulation.
8.1. Blocking by the transmitters manufacturer. Access to the local configuration buttons and to the
transmitter internal components is blocked by the sealing of the side cover and a measuring head locking screw
to the housing of the transmitter. The transmitter rated plates are made of materials self-destructive during
detachment, or alternative used metal rated plates have one of the screws sealed to the casing. Access “spec
MID locking” protects against unauthorized interference to transmitters from a Hart system. APC-2000ALW
Series transmitters manufacturer is using with a plastic seal in its MID realization. Change of the "spec MID
locking” status ("ON" or "OFF") is possible after removing of the manufacturer sealing from the local buttons
side cover only.
8.2. Blocking by the gas volume conversion manufacturer. Turn on the "spec MID locking" with local
buttons using local menu of transmitter (p.10.2.5.2., MID_WP – “ON”). Put the seals of the gas volume
conversion producer on the side cover, screw of a sensor head and a label if it is metal made. Places of seals
application is shown by the arrows at Fig. 1c. Seal should be made in accordance with the documentation of
gas volume conversions in the place/country their use.
Fig 1c. APC-2000ALW in MID application. Sealed up transmitter.
user's seal
producer's seal
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blocking of cover plates against unscrewing
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FIELD TERMINALS
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