Brooks Instrument MT3810 - Manual (Page 36)

2-10
Model MT 3810
Installation and Operation Manual
X-VA-MT3810-eng
Part Number: 541B050AHG
June, 2008
Section 2 Installation
2-9 Installation of Model MT 3810 Flowmeter with a Smart Meter Manager Transmitter
with Inductive Alarms (1 or 2 Switches)
a. Install the meter as described in Section 2-7.
b. Install the transmitter as described in Section 2-8.
c. Install the inductive alarms as indicated below Section 2-10.
2-10 Installation of Model MT 3810 Flowmeter with Inductive Alarms (1 or 2 Switches)
Since this is a magnetically activated device, strong magnetic
fields and materials with magnetic properties may cause faulty
operation when in close proximity to the flowmeter. This includes
steel pipes, steel conduit, motors, and transformers.
CAUTION
Flowmeters with a transmitter must be mounted at least 18 inches
apart to prevent the interaction of adjacent float magnets and
transmitter.
CAUTION
To prevent ignition of hazardous atmospheres and serious
personal injury, proper installation methods must be used as
defined in Article 505 of the National Electrical Code and the
Canadian Electrical Code and ISA Stnadard 12.6.
WARNING
Install the meter as described in Section 2-7.
8. After installation and powering of the loop, the transmitter must be
zeroed, both electrically and mechanically. This operation will
compensate for any stray magnetic effects in the vicinity of the
transmitter. Flow must be zero and when the zero function is
momentarily activated. The pointer must also be adjusted to the
reference line on the scale using the adjustment screw on the face of
the pointer, next to the hub. The zero function may be activated as part
of a periodical maintenance check.
9. Under actual flow conditions, verify that the transmitter output matches
the mechanical pointer position and that the alarms and pulse outputs
are working properly. If a discrepancy is noted, the HART
communications channel can be used to verify or adjust the transmitter
settings. The Emerson Model 275 hand held communicator provides a
simple means to accomplish this check anywhere in the loop. Refer to
Figure 3-2 for connection instructions.