Installation; Operation - Seametrics EM101 Instructions Manual

INSTALLATION and OPERATION

INSTALLATION

Mounting. Mount the display housing to a secure surface
with screws or bolts. Remove the front cover to gain
access to the mounting holes, directly under the front cover
screws. Attach the flow meter to a secure surface using
the foot bracket. Alternatively, the unit can be supported
by the piping and the foot bracket removed. See mounting
diagrams below.
CAUTION:
an empty pipe detection function,
under certain conditions of empty or
partially-full pipe the meter may read
a flow when there is none. If this is a
hazardous condition, mount the meter in such a way
as to ensure the meter will always be full of liquid.
FLOW METER
.218" DIA
4.90"
DISPLAY
4.93"
SET
.71"
.59"
1.25" 1.25" 1.25"
Page 2
Although this meter has
3.75"
3.00"
2.50"
3.50"
3.00"
6 ft. cables
to display
4.40"
2.30"
2.92"
4.93"
1.00"
CONNECTIONS
The meter ships with the coil activation and signal leads
already connected to the display housing. To connect
optional output signal or alarm relay leads, remove
the front cover. See the Connections diagram, page 3.
Power connection uses a standard power cord. If conduit
connection is required, remove the cord and strain relief and
use the strain relief hole for a conduit connector.
Grounding. For proper operation, one or both of the ground
lugs must be well connected to a good quality earth ground.
(The ground lugs also retain the foot bracket). See the
Grounding diagrams, page 3. The meter comes with a 12
foot ground wire attached.

OPERATION

Display. The flow rate is displayed in the time and volume
units that have been selected in Set-Up (page 5) (liters/min,
for example). The cumulative total flow is displayed in the
chosen units, up to eight digits. When the total reaches its
maximum, the display resets to zero and begins again.
Outputs. The analog output varies continuously with the
flow. If the output is too "jumpy" (changes too frequently),
it can be damped in one of two ways: 1) increase the
averaging time (under the Fast Analog Output setting); or 2)
select "Disabled" (the default condition) under Fast Analog
Output and increase the amount of damping using the Low
Pass Filter setting.
The pulse output will produce a 50% duty cycle pulse at the
volume intervals for which it is set - one pulse per liter, for
example. Note: Since each pulse consists of equal times
on and off, if the interval between pulses is large, the pulse
may remain in the "on" condition for several seconds.
The relay alarm output will only energize if the flow goes
above (high) or below (low) the flow alarm setting. The
alarm relay will remain energized until the flow exceeds the
setpoint by .25% (hysteresis).