Seametrics EM 101 v.2 - Manual (Page 4)

Page 2
INSTALLATION and OPERATION
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.
CONNECTIONS
CAUTION: Although this meter has 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.
INSTALLATION
.218” DIA
3.75”
3.00”
2.50”
3.00”
3.50”
4.90”
2.30”
4.40”
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.
FLOW METER
4.93”
SET
.71”
.59”
1.25” 1.25” 1.25”
1.00”
4.93”
2.92”
DISPLAY
6 ft. cables
to display
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).
OPERATION