I
NSTALLATION
&
O
PERATION
I
NSTRUCTIONS
F
OR
KOBOLD
KFR-1000
THRU
KFR-45000
S
ERIES
F
LOWMETERS
C
AUTION
T
HIS FLOWMETER IS DESIGNED FOR USE WITH NON
-
HAZARDOUS FLUIDS AT PRESSURES UP TO
100
PSI
(690
K
P
A
)
AND TEMPERATURES
UP TO
150
°F
(65
°C).
D
O NOT USE HAZARDOUS FLUIDS AND DO NOT EXCEED TEMPERATURE OR PRESSURE LIMITS
.
U
SE WITH
HAZARDOUS FLUIDS OR EXCEEDING THE PRESSURE AND TEMPERATURE LIMITS MAY CAUSE FAILURE WHICH COULD RESULT IN INJURY
.
The KFR-1000 through KFR-45000 acrylic block
flowmeters are available in various ranges in both
SAE and SI units for air and water (see chart on other
side). These direct reading meters are also available
for other gases and liquids. If the meter will be used
with fluids other that air or water, please consult
chemical compatibility data for possible effects on the
meter. When properly installed and maintained, these
durable acrylic meters will provide years of trouble-
free operation.
SPECIFICATIONS
ACCURACY:
KFR-1000/2000 Series
± 5% Full Scale
KFR-3000/45000 Series
± 3% Full Scale
FLOATS:
Black Glass, Stainless Steel,
Aluminum or Black POM
METER BODY:
Clear Acrylic
FITTINGS:
Brass or Stainless Steel
O-RINGS:
NBR O-rings with Brass
Fittings
FKM O-rings with
Stainless Steel fittings
VALVES:
Brass or Stainless Steel
Cartridge Type (Optional)
MOUNTING
INSERTS:
10-32 UNF
MAXIMUM
TEMPERATURE:
150 °F (65 °C)
MAX. PRESSURE:
100 PSIG (690 kPa)
U
NPACKING
Precautions have been taken to prevent any damage
from occurring during shipment. If the meter is
received damaged,
report it to your carrier
immediately
. Before installing, verify that you have
the model and flow range required.
A
CHIEVING
A
CCURATE
F
LOWRATES
To obtain an accurate flowrate, the float must be read
at the position indicated on the meter. If the meter
uses a ball float, the flowrate is determined by reading
the center of the ball. Additionally, the flowmeter
should be installed in a manner, which minimizes
both external vibrations and internal flow variations.
Special care should be taken so that the connections
to the meter’s inlet and outlet fittings do not overly
restrict the liquid or gas flow being metered. This
could result in a reduced flow volume, preventing the
meter from reaching its maximum flowrate.
Furthermore, internal pressures could be affected,
which can cause inaccurate flow readings. On start-
up, slowly purge any fluid trapped in the meter.
I
NSTALLATION
These meters are supplied with a 5/8" or 7/8" hex nut
on the inlet and outlet fittings. When installing 1/8-
27 MNPT or 1/8-18 MNPT fittings into the
meter
,
place the appropriate size wrench on the hex to
prevent the inlet/outlet fitting from rotating.
Torque only to 60 in-lbs.
Failure to do so will cause
the fitting to rotate, and may damage the meter body,
causing leaks and/or meter failure. Use pipe thread
sealant or PTFE tape to ease installation and provide a
better seal. This meter is supplied with #10-32
threaded inserts for mounting. When installing, use
slotted screws and torque to a maximum of 35 in-lbs.
Mounting dimensions are shown in the figure on the
reverse side.
C
LEANING AND
D
ISASSEMBLY
Occasional cleaning may be required if dirt appears in
the flow tube or if float movement becomes restricted.
To clean, remove the top plug and remove the float.
Wash the tapered hole and top plug with a mild liquid
detergent and soft brush. Rinse all parts with clean
water and dry thoroughly with clean air or nitrogen.
Do not use solvents to clean this meter
as they will
attack the acrylic and destroy the meter.
R
EASSEMBLY
Check to make sure that all parts are clean and dry.
To lubricate the o-rings, apply a small amount of
halocarbon grease prior to reassembly. If applicable,
reinstall the rod guide assembly into the flowmeter
body. Make sure the rod guide is seated firmly in the
body of the meter. Reinstall the top plug, making sure
that the rod guide is properly aligned. If you have any
questions regarding the installation, maintenance or
use of this flowmeter, please call one of our friendly
engineers at (412) 788-2830.
