AquaMaster 3
Electromagnetic flowmeter 3 Electrical Installation
24 User Guide OI/FET2XX–EN Rev. E
3.3.7 Anti-tamper Protection
In some applications, such as those covered by the Measuring Instruments Directive (MID) 2004/22/EEC or
OIML R49 the flowmeter can be sealed to prevent unauthorized changes to the meter settings and
configuration. A read-only switch / link is used (as detailed in Fig. 3.12) to prevent login through any
communication means and modification of any parameters on the AquaMaster 3.
Fig. 3.12 Read-only Switch Connections
Note. For MID installations the meter must be ordered with the MID calibration option.
A Not used
B Not used
C Not used
D Not used
E Read-only switch link
F Read-only switch link
To force the transmitter into read-only state,
link connections E & F* or fit adapters below
*ABB supply a plug with this link fitted –
part number WEBC2024 (Pack of 5)
If a pressure transducer is required, an adapter cable
(part number WEBC2025) can be used
D
A
BF
EC
Pressure socket
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