For 1/4" - 2" Pipe Sizes
 Style R Flow Transmitters 
Ideal for batching, industrial process control, mobile hydraulic equipment and computer/PLC-controlled hydraulic system monitoring applications.
SIMPLE TO INSTALL
All transmitters are factory calibrated and ship fully assembled. Simply install the transmitter into your system and apply power.
INDUSTRY STANDARD OUTPUTS
Transmitters provide proportional analog outputs of 4-20mA, 0-5 Vdc and 1-5 Vdc1, and 20-2000 Hz square-wave pulse. These outputs will drive popular data acquisition devices, meters and analog input cards.
DIRECT READING
All transmitters provide a visual indication of flow rate proportional to the transmitted output.
WEATHER-TIGHT CONSTRUCTION
The rugged cast aluminum NEMA type 4X enclosure allows installation in outdoor applications and in environments where liquid tight seals are required.
RUGGED AND RELIABLE
Without delicate internal components to break, abrade or corrode, the Lake flow transmitter will provide many years of low-maintenance service.
COMPATIBLE WITH LAKE MONITORS' R/T100 AND R100 FLOW ANALYZERS
The Lake flow rate transmitter combines with these Lake analyzers to make a powerful flow instrument capable of remote monitoring of rate and total flows.
1The 1-5Vdc output requires an external 249 ohm resistor (not included with transmitter) to be wired at the receiving device.
Flow Transmitter Engineering Specification
THE IN-LINE FLOW RATE METER/TRANSMITTER SHALL:
- Be factory calibrated for 4-20mA, 0-5Vdc, 1-5Vdc, and square wave pulse outputs.
- Use the variable annular orifice technique with compression spring recoil.
- Not require inlet or outlet straight plumbing, or require vertical orientation.
- Have a measuring accuracy of ±2.5% of full scale in the center third of the measuring range, and ±4% in upper and lower thirds.
- Have a stainless steel sharp-edged orifice
- Have a maximum working pressure rating of 3500 or 6000 PSIG for liquids.
- Have a maximum working pressure rating of
600 or 1000 PSIG for gasses.
- Have a weather-tight external construction.
- Be Lake Monitors No. R _ _ ? _ _ _ ? _ _.
| Flow Transmitter Materials of Construction (Wetted Components) |
|
Aluminum |
Brass |
Stainless Steel |
|
High-pressure casing, end ports and tapered shaft |
Aluminum |
Brass |
#303 Stainless Steel |
|
Seals |
Buna-N (STD.), EPR, Viton® or Kalrez® |
Buna-N (STD.), EPR, Viton® or Kalrez® |
Viton® with Teflon® backup (STD.), Buna-N,
EPR or Kalrez® |
|
Transfer Magnet |
Teflon® coated Alnico |
Teflon® coated Alnico |
Teflon® coated Alnico |
|
Floating Orifice Disk |
Stainless Steel |
Stainless Steel |
Stainless Steel |
|
All other internal parts |
Stainless Steel |
Stainless Steel |
Stainless Steel |
Teflon is a registered trademark of DuPont de Nemours & Co.
Viton and Kalrez are registered trademarks of Dow DuPont Elastomers
| Materials of Construction (Non-Wetted Components) |
|
Aluminum |
Brass |
Stainless Steel |
|
Enclosure & Cover |
Aluminum |
Aluminum |
Aluminum |
|
Seals |
Buna-N |
Buna-N |
Buna-N |
|
Window |
Pyrex® |
Pyrex® |
Pyrex® |
|
Din Connector |
Polyamide |
Polyamide |
Polyamide |
Pyrex is a registered trademark of Corning Inc.
| Meter Performance |
|
Measuring accuracy: |
±2.5% of full-scale in the center third of the measuring range; ±4% in upper and lower thirds |
|
Repeatability: |
±1% of full-scale |
|
Flow measuring range: |
0.05-150 GPM (0.2-560 LPM); 1.5-1300, SCFM (0.75-610 SLPS) |
|
Pressure differential: |
Click here for specific pressure differential graphs |
|
Maximum operating pressure: |
aluminum and brass meters: 3500 PSIG (240 Bar)
stainless steel meters: 6000 PSIG (410 Bar) |
|
Maximum operating temperature: |
media: 240°F (116°C), ambient: 180°F (82°C) |
|
Standard calibration fluids: |
Oil meters: DTE 25® @ 110°F (43°C), 0.873 sg
Water meters: tap water @ 70°F (21°C), 1.0 sg
Air meters: air @ 70°F (21°C), 1.0 sg and 100 PSIG (6.8 Bar) |
|
Filtration requirements: |
74 micron filter or 200 mesh screen minimum |
DTE 25 is a registered trademark of Exxon Mobil
| Electronic Transmitter Performance |
|
Power requirements: |
12-35 Vdc |
|
Load driving capacity: |
4-20mA: Load resistance is dependent on power supply voltage. Use the following equation to calculate maximum load resistance:
Max Loop Load (Ω) = 50(Power supply volts - 12).
0-5 VDC: Minimum load resistance 1000 Ω
1-5 VDC: Minimum load resistance 25 K Ω
Square Wave Pulse: Minimum load resistance 1000 Ω |
|
Transmission distance: |
4-20mA and 1-5 VDC are limited only by wire resistance and power supply voltage.
<200 feet recommended for 0-5 VDC and square wave pulse. |
|
Over-current protection: |
self limiting at 35mA |
|
Resolution: |
10 bit (0.1%) |
|
Isolation: |
Inherently isolated from the process |
|
Response time: |
<100 milliseconds |
| Mechanical Size Code |
|
|
|
DIM |
Series 3 |
Series 4 |
Series 5 |
Series 5 |
|
A |
6-9/16"
(167mm) |
7-5/32"
(182mm) |
10-1/8"
(258mm) |
12-5/8"
(322mm) |
|
B |
2-3/16"
(56mm) |
2-15/16"
(75mm) |
3-13/16"
(97mm) |
3-13/16"
(97mm) |
|
C |
4"
(101mm) |
4-1/2"
(114mm) |
5-5/16"
(135 mm) |
5-5/16"
(135 mm) |
|
D |
1-7/8"
(47mm) |
1-7/8"
(47mm) |
1-7/8"
(47mm) |
1-7/8"
(47mm) |
|
E |
4-7/8"
(128mm) |
5"
(127mm) |
6-3/4"
(172mm) |
6-3/4"
(172mm) |
|
F |
2-1/4"
(57mm) |
2-7/8"
(73mm) |
3-3/4"
(95mm) |
3-3/4"
(95mm) |
|
Port Size |
NPTF: 1/4", 3/8", 1/2"
SAE: #6, #8, #10
BSP: 3/8", 1/2" |
NPTF: 3/4", 1"
SAE: #12, #16
BSP: 3/4", 1" |
NPTF: 1-1/4", 1-1/2"
SAE: #20, #24
BSP: 1-1/4", 1-1/2" |
NPTF: 2"
SAE: #32
BSP: 2" |
Note: Consult factory for SAE brass meter requirements.
|
