®
Technical Specifications
LSF
®
INSTRUMENTS, LLC.
Flowmate Flowmeter
Description
The Sparling/OVAL Flowmate is a positive displacement
flowmeter designed for the measurement of very small flow
rates in applications requiring high accuracy. It is an ideal flow
measurement device for various fuels like kerosene, diesel, fuel
oil, etc. Units are available for remote registration and
totalization using either a reed switch or pulse generator output.
Applications
The simple unique construction enables the Sparling/OVAL gear
meter to measure various fuels with the highest accuracy for
accountability and control.
Common Applications Include:
•
List(0)
Features
•
Sizes include: 0.125", 0.125" and 0.25".
•
Aluminum or SST Body Chambers.
•
Accuracy is within ±1% Reading of actual flow for the
specified meter range.
•
Carbon Steel, Resin, Coated Gears - can apply for most
liquids
•
Reed Switch or MR Sensor for remote registration or
totalization.
•
Scaled or Unscaled Pulse Output.
•
NPT or Metric End Connections
•
Special SST body and rotors
•
Low Pressure Drop
•
Viscosity up to 1000cp
Principle of Operation
Each meter is equipped with two OVAL shaped gears which
rotate when fluid passes through a fixed measuring chamber.
Rotation of gears displaces a fixed volume of fluid. The sensor
picks up gear rotation, which is proportional to fluid volume and
flow rate.
The meter is designed to minimize the slippage bettween gears
and measuring chamber body. As a result, the OVAL gear meter
is less affected due to liquid viscosity and lubricity than other
flowmeter designs.
Standard Specifications
Accuracy:
Standard ±1% Accuracy
Process Fluid:
Clean Liquid
Max. Working
Pressure:
150 psi
Max. Working
Temperature:
-4°F to 176°F
Flow Ranges:
See Table
Construction:
Housing: Aluminum or SST
Material:
Rotor: Carbon Steel or Resin
Process
Connections:
NPT Threaded Adapters
R 3/8 - 19
.........
0.125" NPT Female
R 1/2 - 14
.........
0.25" NPT Female
Pulse Generator
Solid State Hall Effect Switch
Detection Method:
MR Sensor
Response Frequency:
1000Hz Max
Ambient Temp:
-4°F to 176°F
Output Pulse:
Voltage Pulse: 0/1 = 0.5V Less than/
6.4V - 7.4V (at load resistance more
than 10 kiloohms)
Wave form ratio (%):
Power Supply:
12-24VDC, ±10%
Power Consumption:
7mA (200 mW) Max
Reed Switch (Option)
Max. Voltage:
100VAC; 100VDC
Contact Capacity:
10 W or 5000mA
Electric Durability:
250VDC RMS; 1 minute
Output Pulse:
Two wire contact pulse (unfactored)
Ambient Temp:
-4°F to 185°F*
Note: Application is limited by meter temperature standard of -
4°F to 176°F.
®
INSTRUMENTS, LLC.
Flow Range
Size
More than 0.3cp
& less than 0.8cp
More than 0.8cp
& less than 2cp
More than 2cp &
less than 5cp
More than 5cp &
less than 200cp
More than 5cp &
less than 1000cp
Rotor Material
40
0.4 - 13.2
0.3 - 13.2
0.2 - 13.2
*
0.1 - 13.2
Special Resin
41
0.8 - 26.4
0.5 - 26.4
0.4 - 26.4
*
0.3 - 26.4
Special Resin
41
1.9 - 26.4
1.06 - 26.4
0.5 - 26.4
0.3 - 26.4
*
Stainless Steel
45
2.6 - 132.1
1.99 - 132.1
1.06 - 132.1
*
0.7 - 132.1
Special Resin
45
6.6 - 132.1
4 - 132.1
1.9 - 132.1
0.9 - 132.1
*
Stainless Steel
Meter Body
Item
Description
Meter Size
40
41
45
Parallel Internal
Threads
0.125"
0.125"
0.25"
Accuracy
±1% Reading
Operating Temp.
-4°F to 176°F
Max. Press.
150 psi
Material
Body
L
C
L
C
C
L
C
C
Rotor
K
K
K
K
C
K
K
C
C: Stainless Steel
L: Aluminum +Alumite treatment
K: Special Resin
Pulse Generator
MR Sensor
- See specifications on front page
MR Sensor Output Pulse Unit
Size
Scaled Pulse
Unscaled Pulse
Max. Flow
Rate (GPH)
Pulse Unit
(ml/pulse)
Freq @
Max Flow
Rate (Hz)
Meter
Factor (ml/
pulse)
Freq @
Max Flow
Rate (Hz)
40
1
13.9
0.25
55.6
13.2
41
1
27.8
0.5
55.6
26.4
45
10
13.9
2.5
55.6
132
Reed Switch (Option)
- See specifications on front page
Reed Switch Output Pulse Unit
Size
Unscaled Pulse
Max. Flow Rate
(GPH)
Meter Factor
(ml/pulse)
Freq @ Max Flow
Rate (Hz)
40
0.25
55.6
13.2
41
0.5
55.6
26.4
45
2.5
55.6
132
Meter Error and Pressure Drop
Dimensions
Size
A
B
C
D
0.128"
1.5625"
1.5625"
1.0625"
1.375"
0.25"
2"
2"
1.25"
2"
How to order a Flowmate
Table 1: BaseModelNumber
LSF
-
Sparling/Oval M-III
Table 2: Size
40
-
0.125" (N/A in all Stainless Steel-C Option)
41
-
0.125"
45
-
0.25"
Table 3: MatMeterElements
C
-
316 SS Body & Rotor
L
-
Aluminum Body and Special Resin Rotor
P
-
Aluminum Body & Special Resin Rotor
Table 4: Connection
0
-
None
8
-
With Connector (Option)
Table 5: Generation
M
-
MR Sensor
R
-
Reed Switch
Table 6: PulseType
1
-
Unscaled Pulse
2
-
Pulse Output (MR Sensor Only)
Model
Size
Material
Conn.
Gen.
Pulse
LSF
40
C
0
M
1
