Omega Products FLMH-1002SS User Manual

ECONOMICAL IN-LINE LIQUID
FLOWMETERS

FLMW and FLMH Series

†

Optional

U Direct-Reading

Dual Scales

U Ranges from

0.05 to 150 GPM

U High Pressure: 3500 psi

(Brass or Aluminum);
6000 psi (Stainless Steel)

U High Temperature:

116°C (240°F) Standard,
204 or 316°C
(400 or 600°F) Optional

U Mounts in Any Position
U Relay Alarms and Analog

Outputs Optional

The FLMW and FLMH flowmeters
can be installed directly in the fluid
line without flow straighteners or
special piping.

The spring-and-piston type
assembly enables these flowmeters
to be mounted in any position and
protects them against changes
in viscosity.

The FLMW or the FMLH Series with
the optional analog output
(-MA) are typically used to transmit
a signal proportional to the flow rate
to a process controller, a PLC, a
recorder, or a panel-mount display.
With the -MA options the user can
choose between reading a 0 to
2000 Hz square-wave pulse, a
0 to 5 Vdc analog signal, or a
2-wire 4 to 20 mA analog signal by
connecting the appropriate pins.

Specifications

Measuring Accuracy: ±2.5% FS in

the center third of the measuring range;
±4% FS over the entire scale range

Repeatability: ±1% FS
Flow Measuring Range:

0.2 to 560 LPM (0.05 to 150 GPM)

Max Operating Pressure:
Aluminum and Brass Monitors:

240 bar (3500 psig)
Stainless Steel Monitors: 410 bar
(6000 psig) up to 116°C (240°F)

Max Operating Temperature:

116°C (240°F)

[Note: For high temperature (“-HT”,
“-UHT”), see chart on next page.]

†

Refers to NIST calibration.

Standard Calibration Fluids:
Oil Monitors:
DTE 25 @ 43°C (110°F), 0.873 sg
Water Monitors:
Tap water @ 21°C (70°F), 1.0 sg
Maximum Particle Size:
76 microns

Relay (Optional): 1 or 2 form “C”
relays, rated 10 A @125 or 250 Vac
or 0.25 A @ 250 Vdc
Mechanical Life:

7

cycles

>10
Analog Output (Optional):
Supply voltage 12 to 35 Vdc,
field selectable for 0 to 5 Vdc
(100 W minimum load), 0 to 2000 Hz
square-wave pulse or 4 to 20 mA

= 50 (VS-12). VS = supply

R

max

voltage DC

Materials of Construction (Wetted Components)

Aluminum
Description (Not for Water) Brass Stainless Steel

High-pressure Aluminum Brass 304 SS
casing, end ports
and tapered shaft

Seals Buna (STD), Buna (STD), FKM with PTFE
EPR, FKM or EPR, FKM or backup (STD) Buna,
Perfluoroelastomer Perfluoroelastomer EPR or Perfluoroelastomer

Transfer magnet PTFE-coated Alnico PTFE-coated Alnico PTFE-coated Alnico
Floating orifice disk Stainless steel Stainless steel Stainless steel
All other Stainless steel Stainless steel Stainless steel

internal parts

Materials of Construction (Non-Wetted Components)

Description Aluminum Brass Stainless Steel

Window tube Polycarbonate (STD), Polycarbonate (STD), Polycarbonate (STD),
Pyrex® Pyrex Pyrex

Window seals Buna (STD), PTFE Buna (STD), PTFE Buna (STD), PTFE

Port Sizes

Installation
Dimensions

11⁄4 and 11⁄2 Port: 31⁄2 OD x 257 mm (10.1") length

FLMW-1205BR-MA

5 GPM oil meter with

4 to 20 mA output

All models

shown smaller

than actual size.

1

⁄4 and 1⁄2 Port: 17⁄8 OD x 168 mm (6.6") length

3

⁄4 and 1.0 Port: 23⁄8 OD x 183 mm (7.2") length

B-X

FLMH-3810AL

1

⁄4 to 11⁄2 FNPT

FLMW-3405BR

5 GPM water meter

Oil Flowmeters

To Order Visit omega.com/flmh_flmw for Pricing and Deatils

Max
Rate Conn
Model No. GPM Size

FLMH-1401(*) 1 ¹⁄₄ NPT
FLMH-1402(*) 2 ¹⁄₄ NPT
FLMH-1405(*) 5 ¹⁄₄ NPT
FLMH-1410(*) 10 ¹⁄₄ NPT
FLMH-1415(*) 15 ¹⁄₄ NPT
FLMH-3801(*) 1 ³⁄₈ NPT
FLMH-3802(*) 2 ³⁄₈ NPT
FLMH-3805(*) 5 ³⁄₈ NPT
FLMH-3810(*) 10 ³⁄₈ NPT
FLMH-3815(*) 15 ³⁄₈ NPT
FLMH-1201(*) 1 ¹⁄₂ NPT
FLMH-1202(*) 2 ¹⁄₂ NPT
FLMH-1205(*) 5 ¹⁄₂ NPT
FLMH-1210(*) 10 ¹⁄₂ NPT
FLMH-1215(*) 15 ¹⁄₂ NPT

Indicate material: AL = aluminum,

*

standard; BR = brass, SS = stainless steel

for additional cost.

Max
Rate Conn
Model No. GPM Size

FLMH-3402(*) 2
FLMH-3405(*) 5
FLMH-3410(*) 10
FLMH-3415(*) 15
FLMH-3420(*) 20
FLMH-3425(*) 25
FLMH-3430(*) 30
FLMH-3440(*) 40
FLMH-1002(*) 2 1 NPT
FLMH-1005(*) 5 1 NPT
FLMH-1010(*) 10 1 NPT
FLMH-1015(*) 15 1 NPT
FLMH-1020(*) 20 1 NPT
FLMH-1025(*) 25 1 NPT
FLMH-1030(*) 30 1 NPT
FLMH-1040(*) 40 1 NPT

Indicate material: AL = aluminum,

*

standard; BR = brass, SS = stainless steel

for additional cost

³⁄₄
³⁄₄
³⁄₄
³⁄₄
³⁄₄
³⁄₄
³⁄₄
³⁄₄

NPT
NPT
NPT
NPT
NPT
NPT
NPT
NPT

Max
Rate Conn
Model No. GPM Size

FLMH-114025(*) 25 1¹⁄₄ NPT
FLMH-114050(*) 50 1¹⁄₄ NPT
FLMH-114075(*) 75 1¹⁄₄ NPT
FLMH-114100(*) 100 1¹⁄₄ NPT
FLMH-114150(*) 150 1¹⁄₄ NPT
FLMH-112025(*) 25 1¹⁄₂ NPT
FLMH-112050(*) 50 1¹⁄₂ NPT
FLMH-112075(*) 75 1¹⁄₂ NPT
FLMH-112100(*) 100 1¹⁄₂ NPT
FLMH-112150(*) 150 1¹⁄₂ NPT

Indicate material: AL = aluminum,

*

standard; BR = brass, SS = stainless steel,

for additional cost

Note: Minimum flow rate = 10% of maximum.

B

Water Flowmeters

To Order Visit omega.com/flmh_flmw for Pricing and Deatils

Max
Rate Conn
Model No. GPM Size

FLMW-1401(*) 1
FLMW-1402(*) 2
FLMW-1405(*) 5
FLMW-1410(*) 10
FLMW-3801(*) 1 ³⁄₈ NPT
FLMW-3802(*) 2 ³⁄₈ NPT
FLMW-3805(*) 5 ³⁄₈ NPT
FLMW-3810(*) 10 ³⁄₈ NPT
FLMW-3815(*) 15 ³⁄₈ NPT
FLMW-1201(*) 1 ¹⁄₂ NPT
FLMW-1202(*) 2 ¹⁄₂ NPT
FLMW-1205(*) 5 ¹⁄₂ NPT
FLMW-1210(*) 10 ¹⁄₂ NPT
FLMW-1215(*) 15 ¹⁄₂ NPT

Indicate material: BR=brass, standard;

*

SS=stainless steel for additional cost.

¹⁄₄
¹⁄₄
¹⁄₄
¹⁄₄

NPT
NPT
NPT
NPT

Options

Order Suffix Description

-HT High temperatures, 204°C (400°F) max

-UHT Ultra high temperatures, 315°C (600°F) max

-R1 Single SPDT relay, 10 A @ 220 Vac

-R2 Dual SPDT relays, 10 A @ 220 Vac

-MA 4 to 20 mA ouput (12 to 35 Vdc powered)

-BDF Bi-directional flow (not available with 1¹⁄₂" size units, or with UHT, R1, R2, or MA options)

¹⁄₄ to ¹⁄₂", ³⁄₄ to 1", 1¹⁄₄" sizes for additional cost

-NIST NIST traceable certificate

Note: Only one option may be ordered with each unit for additional cost. Options are available for additional cost.

Max
Rate Conn
Model No. GPM Size

FLMW-3402(*) 2
FLMW-3405(*) 5
FLMW-3410(*) 10
FLMW-3415(*) 15
FLMW-3420(*) 20
FLMW-3425(*) 25
FLMW-3430(*) 30
FLMW-3440(*) 40
FLMW-1002(*) 2 1 NPT
FLMW-1005(*) 5 1 NPT
FLMW-1010(*) 10 1 NPT
FLMW-1015(*) 15 1 NPT
FLMW-1020(*) 20 1 NPT
FLMW-1025(*) 25 1 NPT
FLMW-1030(*) 30 1 NPT
FLMW-1040(*) 40 1 NPT

Indicate material: BR=brass, standard;

*

SS=stainless steel for additional cost.

³⁄₄
³⁄₄
³⁄₄
³⁄₄
³⁄₄
³⁄₄
³⁄₄
³⁄₄

NPT
NPT
NPT
NPT
NPT
NPT
NPT
NPT

Max
Rate Conn
Model No. GPM Size

FLMW-114025(*) 25 1
FLMW-114050(*) 50 1
FLMW-114075(*) 75 1
FLMW-114100(*) 100 1
FLMW-114150(*) 150 1
FLMW-112025(*) 25 1
FLMW-112050(*) 50 1
FLMW-112075(*) 75 1
FLMW-112100(*) 100 1
FLMW-112150(*) 150 1

Indicate material: BR=brass, standard;

*

SS=stainless steel for additional cost.

¹⁄₄
¹⁄₄
¹⁄₄
¹⁄₄
¹⁄₄
¹⁄₂
¹⁄₂
¹⁄₂
¹⁄₂
¹⁄₂

NPT
NPT
NPT
NPT
NPT
NPT
NPT
NPT
NPT
NPT

B-X