Banjo MFM100 Manuel utilisateur

The 1" Flow Meter Series are a full-bore, plastic-bodied electromagnetic

ow meter designed for ow and usage monitoring applications in 1" pipe.

The polypropylene ow tube oers corrosion resistance to a wide range of

chemicals. Its light weight and clamp anges allow it to be easily installed

or removed from the pipe for inspection. There are multiple congurations.

With no moving parts, the magmeter permits unobstructed ow,

minimizing ow disturbances. The 1" Meter Series can be used in

piping congurations where there is little space between the meter

and valve. The 1" Meter Series, like other magmeters, are resistant to

wear from debris. Since there are no bearings or propeller to wear out,

downtime and maintenance are kept to a minimum. Because there are no

mechanical parts in the ow stream, the meter tolerates high ows without

damage. Please note that ow does not automatically turn the meter on.

The hinged, polyethylene cover protects from dust and UV rays, while

permitting easy access to the LCD ow rate and total display. The

electronics housing is made of rugged powder-coated die-cast aluminum.

Flow rate and total can be displayed in a variety of units, customer-

selected and factory-set.

The 1" Meter Series are used for tracking ow rates and total ow in

usage monitoring applications. These would include wells, industrial

wastewater, leach mining discharge, cooling tower deduct metering, turf

and landscape applications, and other water reclamation operations. In

the event of DC power loss, or when changing batteries, the ow meter

will retain internal settings and ow total.

The ow meters are externally powered via a 5-pin connector cable

(20ft/6m) which also provides pulse output for use with a variety of

displays and controls for remote reading, data logging, pulse-to-analog

conversion, and telemetry applications.

The ow meters are battery-operated units for use when pulse output

is not required. The batteries are user replaceable with an approximate

1-year life under continuous use, or more depending on the duty cycle.

The ow meters shut o after minutes of inactivity to preserve battery life.

MFM100 & FM100

MFM100DC & FM100DC

Plastic-Bodied Magmeter

APPLICATIONS

Usage monitoring, such as:

• Industrial wastewater discharge monitoring

• Cooling tower deduct metering

• Heap leach mining discharge monitoring

• Well monitoring

• Turf and landscape water monitoring

• Agriculture liquid monitoring

FEATURES

• Simple as a mechanical meter

• No moving parts

• Minimal straight pipe required

• Battery powered

• Built-in rate & total indicator

• Corrosion resistant

Unobstructed Flow

150 Banjo Drive Crawfordsville, IN 47933

ph: 765-362-7367 fax: 800-458-0232

www.banjocorp.com Manual# FMM1000

* Will not read petroleum

based liquids.

1. When placing the owmeter in line, it is important to rotate the

owmeter so that it is approximately at a 45-degree angle. (See

gure 1) This will improve performance of the ow meter. The ow

meter can be placed vertical as long as ow is sucient to ll the

pipe.

2. There are 3 photoeyes located on the face of the ow meter.

Note: These are not buttons so you will not push them, instead, to

activate you must hold your nger over the photoeye for 2-4

seconds. To reset the running total you must hold your nger over

both the “batch reset” and the “batch/total” photoeyes. If you would

like liters rather than gallons, you will need to hold your nger over the

rst and third photoeyes at the same time. (See gure 2)

3. There are six (6) AA batteries located inside the ow meter.

To replace the batteries, simply remove the four cover bolts and

gently remove the top cover. Replace batteries and fasten cover

back in place. Be careful not to pinch any wires when assembling the

cover. It is a good idea to change the batteries yearly.

4. The ow rate of the meter is designed to have an unlimited ow,

meaning that the meter will read as much ow as one can push

though a 1" full port coupling. However, the accuracy of the meter

decreases as the meter reaches ows under 2.3 GPM. From 2.3 to

110 GPM the meter is within 2-3% accuracy.

5. It is good to thoroughly clean the meter and the electrodes at least

once a year. This can be done by gently rubbing the electrodes with a

piece of emery cloth.

FIGURE 1 FIGURE 2

photoeye

6. The “EP” is an error message meaning that the system is idle and

there is no uid traveling through it at that time.

7. It is recommended to have at least 10 inches of straight pipe before

the ow meter and at least 10 inches after.

8. The cover can be rotated. To rotate cover 90°, remove the 4 cover

bolts and carefully rotate the cover to the desired position. Take note

not to pull or pinch any of the connecting wires. To rotate the cover

180°, remove the 4 cover bolts, the 6 AA batteries and the 2 screws

that hold the battery holder in place. Then rotate the battery holder

and the cover together to the desired location. Take note not to pull

or pinch any of the connecting wires.

INSTRUCTIONS

Polyethylene protective cover

LCD rate and total indicator

Powder-coated die cast-aluminum

electronics housing

Corrosion-resistant glass-lled

polypropylene body

Lightweight for easy handling

Clamping anges for ease

of installation

316 SS electrodes

FEATURES

FM100 & FM100DC

DIMENSIONS

MFM100 & MFM100DC

/16

45/32

51/2

NPT

55/16

45/32

53/8

45/32"

55/16"

5½"

1" NPT

45/32"

55/16"

53/8"

SPECIFICATIONS

Pipe Size 1" Full Port

Fittings Flange Clamps/NPT Pipe Fittings

Pressure 150 PSI or 10.3 bar working pressure @ 70°F

Operating Temperature Range 10° to 130°F (-12° to 54°C)

Accuracy +/-1% of reading from 100% to 10% of full scale

+/-3% of reading from 10% to 10% of full scale to cut o=> 2% to 10%

Flow Range Minimum 2.3 GPM & 8.7 LPM

Maximum 110 GPM & 416.4 LPM

Materials Body Glass-lled polypropylene

Electrodes 316 stainless steel

Electronics Housing Die cast aluminum, powder-coated

Display Cover Polyethylene

Display Rate

Digits 6

Units Gallons/Minute

Liters/Minute

Power 6 AA alkaline cells, replaceable Life: 1 year with meter in use; 3 years dry

10-30 Vdc @ 60 mA max (15 mA average) Note: Using an unregulated power

supply >18 Vdc may damage the meter due to AC line input voltage uctuation.

Pulse Output Signal Current sinking pulse, opto isolate, 32 Vdc max at 10 mA max

Standard Pulse Rate 1 unit/pulse out, pulse width of 10 ms depending on unit selection

High Frequency 80 Pulse per unit, pulse width 1.1 ms, min-max frequency, 3-150 HZ

Empty Pipe Detection Hardware/software, conductivity-based

Conductivity >20 microSiemens

Environmental NEMA 4X standard; -40° to 176°F (-40° to 80° C) storage

Electrical Connection 5 pin male circular connector, mates to industry standard cable (20ft/6m)

* Specications subject to change • Please consult our website for current data (www.banjocorp.com)

SPECIFICATIONS*

Piping Conditions

Installing the meter with a length of straight pipe at least two

times the diameter upstream and one diameters downstream is

highly recommended. Some piping conditions require more than

this. See chart for recommendations.

If hose is used, use smooth bore hose.

Follow the diagram below to make the connections.

INSTALLATION

Step 1.

Position gasket

at either end Step 2.

Place adapter against

gasket, open screw

clamps to clear anges

Step 3.

Place screw clamps over

both adapter and meter

anges and tighten screws

This is an all position meter which can be installed either vertically

or horizontally, register up, down or angled. However, entrained air

or solids may make some positions preferable to others. See the

position diagram for guidance.

POSITION

Recommended:

May prevent sediment

or bubble problems

Electrode

moved from

top by rotating

meter

Intermittent air bubbles

miss electrode

Electrodes free

from sediment

build-up

Intermittent air

bubbles pass

over electrode

Possible

sediment

build-up

Less Ideal:

Air bubbles and sediment

on the electrodes can

aect accuracy

STRAIGHT AND FULL PIPE RECOMMENDATIONS

10x

It is recommended to have at least 10 inches of straight pipe before the ow meter and at least 10 inches after.

X = Diameter

ELECTRICAL CONNECTIONS, CABLE CONNECTIONS & OPERATION

10x

ELECTRICAL CONNECTIONS

A connector is provided on the outside of the ow meters. To connect to the meter, plug the cable in and hand tighten the retaining threads. Follow

the diagram to make connections. If you are using the pulse output, connect power rst and determine that the meter is working properly by

observing the display, then connect the pulse output.

CABLE CONNECTIONS

OPERATION - GROUNDING

For best performance, especially in noisy environments, the gray ground wire and the bare drain wire should be connected together and to a good

earth ground as close to the meter as possible. Metal pipe and ttings in contact with the uid, should also be bonded to the same earth ground with

corrosion-resistant connections.

MAINTENANCE, REPAIR AND TROUBLE SHOOTING

MAINTENANCE AND REPAIR

There are no user-serviceable parts in the 1" Meter Series meters except the batteries.

Battery Replacement

When the “Lo Batt” indicator appears, the batteries should be changed. Six alkaline AA cells are required. To change the batteries, rst remove the

four screws which hold the top cover in place. Be careful not to lose the washers. Move the top cover to one side and remove the foam retainer

which covers the battery tray. Remove the old batteries and replace them with fresh ones, taking care to follow the polarity indicators in the battery

tray. Replace the foam retainer, then put the top cover back in place. Put the four screws with washers back and tighten them rmly.

TROUBLE SHOOTING

PROBLEM PROBABLE CAUSE TRY

Blank Display Batteries dead or incorrectly installed Check polarity, replace batteries

Reading “-EP-” Empty or partly lled pipe

Excessive air pockets or foaming Rearrange piping to ensure full pipe

Flow but no ow rate reading Heavily coated electrodes Remove meter and wipe electrodes

Display

The display reads ow rate and accumulated total, in the units for which it was ordered. The top line is total, the bottom line is rate, and indicators