Sierra FLAT-TRAKTM 780S - Manual (Page 13)

Series 780S Instruction Manual Chapter 2 Installation
IM-78S-B 2-1
Chapter 2 Installation
Installation Overview
The Series 780S Flat-Trak ™ is available with ANSI or DIN flanges,
NPT or butt-weld connections. For ease of installation, the meter is
pre-assembled with the sensor probe installed in the flow body.
When selecting an installation site, make sure that:
1. Line pressure and temperature will not exceed the flow meter
rating. Temperature should not vary more than 200°F (100°C)
around the calibration temperature. Line pressure should not
vary more than 50 psi (3.4 bar) around the calibrated pressure.
2. The location meets the required minimum number of pipe
diameters upstream and downstream of the sensor head (see
Table 2-1).
3. Safe and convenient access with adequate clearance. Also, verify
the meter is located where the gas is clean and dry and the meter
is calibrated for the gas to be measured.
4. When using a CSA, FM or EEx approved flow meter, verify that
the cable entry into the instrument meets the specific standard re-
quired for that approval.
5. For remote installations, verify the supplied cable length is suffi-
cient to connect the flow meter sensor to the remote electronics.
(Do not extend or shorten the supplied cable between the probe
and the electronics.)
Also, before installation check your flow system for anomalies
such as:
•
leaks
•
valves or restrictions in the flow path that could create dis-
turbances in the flow profile that might cause unexpected
flow rate indications
•
heaters that might cause rapid excursions in the measured
temperature
Warning!
Agency approval for hazardous
location installations varies
between flow meter models.
Consult the flow meter name-
plate for specific flow meter
approvals before any hazard-
ous location installation.