Commissioning; Safety Instruction; Checks Prior To Commissioning; Mid/Anti-Tamper Seals - ABB AquaMaster4 Manual

A Q U A M A S T E R 4 | E L E C T R O M A G N E T I C F LO W M E T E R T R A N S M I T T E R | O I/ F E T4 0 0 - E N R E V. B

6 Commissioning

Safety instruction

WARNING – INTEGRAL FLOWMETERS
Risk of burns due to hot measuring media.
The sensor surface temperature may exceed 70 °C
(158 °F), depending on the measuring medium
temperature! Before starting work on the flowmeter,
make sure that it has cooled sufficiently.
If there is a chance that safe operation is no longer possible,
take the flowmeter out of operation and secure it against
unintended startup.

Checks prior to commissioning

The following points must be checked before commissioning
the flowmeter:
• The wiring must have been completed as described in
Installation – page 10.
• The sensor must be grounded correctly.
• The ambient conditions must meet the requirements set
out in the technical data.
• The power supply must meet the requirements printed on
the identification plate.
• The sensor and transmitter must be correctly assigned –
see page 8 for label information.
IMPORTANT (NOTE)
The Flow Settings > Mains Noise Rejection Frequency
(Hz) setting must match the mains frequency in the
country of installation – see page 29.

MID/Anti-tamper seals

For flowmeters ordered with the Measuring Instrument
Directive (MID) option it is a legal requirement that,
at the end of installation, the flowmeter is sealed to prevent
unauthorized changes to the meter settings and configuration.
A read-only switch is used to prevent login through any
communication means and modification of any parameters on
the AquaMaster4 – see Figure 30.
For MID flowmeters this switch must be set to MID Read-only
position. A suitable anti-tamper seal (see page 22) must be
fitted such that, in the event of unauthorized tampering, it is
clearly visible that the fitted legal metrology seal has been
broken.
MID/Read-only switch
Figure 30 Read-only switch
MID sealed
read-only position
Read/Write position
21