CDI Meters CDI 5400 User manual

cdimeters
CDI Meters, Inc. [email protected] 866-885-2462
www.cdimeters.com
Using the Outputs
The milliamp output is scaled so that four milliamps corresponds to zero flow and
20 milliamps corresponds to the range of the meter indicated on the data sheet.
The meter will display the milliamp full-scale value for a few seconds on startup.
It will also display it if the button on the main (lower) circuit board is pressed
twice.
The pulse output generates a square wave signal, sending one pulse for each
cubic foot of air that passes through the meter. The LED blinks with the pulse
output. At zero flow it may be on or off. The pulse output can be configured as a
threshold output, and the scaling of both the pulse output and the milliamp output
can be changed, using the optional configuration cable.
Using the Display
Pressing a button indicated by a circle on the front of the meter cycles the display
through four display options: rate, daily usage, cumulative usage and units of
measure, the last indicated by a digit: (0) for scfm, (1) for m
3
/min and (2) for
m
3
/hr. The cumulative values are indicated in thousands of cubic feet or cubic
meters. Holding the button pressed in either of the cumulative modes (daily
usage or cumulative usage) will reset that value to zero. The display normally
defaults to the rate display, but this can be changed, as can the units of measure
and the decimal point location in the cumulative modes. Please refer to
information on configuring the display.
Maintenance
If oil or dirt accumulates on the probes, the meter will read low. For this reason,
we recommend cleaning the probes from time to time. To clean the probes, wipe
them with a cloth dampened with alcohol or a similar degreaser. It may be found
that the system is clean enough that cleaning is not needed.
Warranty
CDI warrants solely to the buyer that the Model 5400 Flowmeter shall be free from
defects in materials and workmanship, when given normal, proper and intended
usage, for three years from the date of purchase. During the warranty period, CDI will
repair or replace (at its option) any defective product at no cost to the buyer. The
foregoing warranty is in lieu of any other warranty, express or implied, written or oral
(including any warranty of merchantability or fitness for a particular purpose). CDI’s
liability arising out of the manufacture, sale or supplying of the flowmeter, whether
based on warranty, contract, tort or otherwise, shall not exceed the actual purchase
price paid by the buyer, and in no event shall CDI be liable to anyone for special,
incidental or consequential damages.
© 2014 CDI Meters, Inc. 10.14
CDI 5400 Flowmeter Rev. 3
Installation and Operating Instructions
Limitations and Cautions
CDI 5400 flowmeters are not for use in hazardous areas or on pipes containing
gasses other than air or Nitrogen. They are not designed for installation under
pressure and they are not for use in control or safety applications. High-pressure
seals are required for all applications above 200 psig (14 barg). Contact CDI
about pressure limitations for applications above 200 psig on Type L or heavier
Copper and Sch. 40 or heavier steel pipe, and for all applications on other types
of pipe. The temperature compensation of the meters is suitable for use from 20
to 120°F (-7 to 49°C). The meters may be applied, at reduced accuracy, at
temperatures up to 150°F (66°C).
Locating the Meter
For accurate and reliable readings, the meters must be installed with adequate
straight pipe upstream, and, in compressed-air applications, they must be
installed downstream of a dryer.
Select a location with a straight run of pipe upstream equal to at least twenty
times the pipe diameter. If the meter is downstream of something that could
distort or concentrate the flow, such as a sweep elbow, a partially-closed valve,
an increase in pipe size or a hose, the run of pipe should be as long as possible;
thirty times the diameter at a minimum. Three diameters of straight downstream
piping is sufficient, unless the meter is immediately upstream of something that
would restrict the flow, such as a valve. If possible, locate and orient the meter
for good visibility from the plant floor.
The meters may, when necessary, be installed outdoors. For best visibility, avoid
direct sunlight.
Preparing the Holes
When the holes are drilled, metal shavings will enter the pipe. Make sure that
filters or other provisions are present downstream to prevent shavings from
damaging equipment or product or being blown out and causing injury.
For the larger size meters, the drill guide is a half ring with two drill bushings
mounted in it. Secure this half ring in place by bolting it to the back half ring that
came with the meter. For the smaller meters, the drill guide is an aluminum block
with two drill bushings. Secure this block to the pipe with a C clamp, a band
clamp or a chain clamp. A universal drill guide, similar to the small drill guide, is
also available; it can be used with all 5400 meter sizes.
Before starting to drill the holes, make sure that the air pressure is completely
bled down. With the drill guide firmly clamped to the pipe, drill the holes, using

© 2014 CDI Meters, Inc. 10.14
moderate pressure, pressing squarely on the drill, and retracting the bit from time
to time to clear the chips and cool the bit. After drilling the holes, remove any
burrs that were formed and make sure the pipe is reasonably smooth in the area
around the holes. Apply the “Holes in Pipe” decal so that it will be hidden when
the meter is in place but will be revealed when it is removed.
Installing the Meter
First prepare the meter for the pipe orientation and the direction of flow. To
switch the 5400 between horizontal and vertical orientation, loosen the screws on
the back of the housing, rotate the display, then re-tighten the screws. Be careful
to loosen the screws no more than necessary, and then tighten them securely.
The flow arrow on the meter must be oriented to match the direction of flow in the
pipe. If doing so will cause the display to be upside-down, remove the cover of
the meter, lift out the display, rotate both 180° and re-install.
Now mount the meter on the pipe and tighten the cap screws evenly. The torque
should be sufficient to seal the gasket but not so great that it will crush the gasket
or distort or over-stress a thin-walled pipe.
Wiring the Meter
Wiring must be in accordance with applicable codes and standards. In areas
where electrical interference may be present, signal wiring should be shielded
with the shield grounded remote from the meter. Signal cables must not be run in
conduit or cable trays shared with power wiring. The main terminal block inside
the meter is accessed by removing the cover and lifting out the display circuit
board.
P OWER
Either use the dc wall-plug supply furnished with the meter, or connect the
terminals marked “24V dc” to a distributed dc power supply and seal the unused
power opening with the plastic plug provided. The meter will draw a maximum of
250 mA. Unlike earlier 5200 and 5400 meters, the Rev. 3.0 meters do not
connect the dc- terminal to the pipe on which they are mounted. Please note that
18 Volt dc supplies furnished with some earlier CDI flowmeters do not provide
the voltage required for Rev. 3.0 meters.
R EMOTE D ISPLAY
If you are using the summing remote display (SRD), connect the three terminals
marked “display” to the corresponding terminals in the remote display. The meter
may be powered from the remote display if the cable is 22 gauge or heavier and
the distance is no greater than 200 feet.
M ILLIAMP O UTPUT
The 4 - 20 milliamp output is optically isolated within the meter and it is provided
with a factory-installed jumper which allows it to source a milliamp signal
powered from the meter. The resistance of the loop connected to the output
should not exceed 600 Ohms.
© 2014 CDI Meters, Inc. 10.14
P ULSE O UTPUT
The pulse output is open-collector, that is, a transistor switch to the meter’s
negative supply. To use it, connect it to the input of the receiving device; also
connect that input through a 10K Ohm resistor to a suitable positive supply and
connect the negative supply of the receiving device to the negative supply of the
meter. If an isolated relay contact is required, install the CDI 5200-IPO isolated
pulse output and wire it to the receiving device.
S ERIAL C OMMUNICATION O PTION
The RS-485 signal used with the Serial Communication option is wired to the
special Serial Communication display board. The two threaded openings in the
meter enclosure permit the signal to be wired from meter to meter without
external splices. Please refer to the data sheet for the Serial Communication
option.