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The Flow Rate Alarm is a rugged “flow switch” device that monitors flow and sends a signal using simple on/off logic if rates are out of spec. The weather tight NEMA 4x cast aluminum enclosure allows for outdoor installation and washdowns. Alarm settings are easily adjusted in the field with an allen wrench. The standard Hirschman interconnection provides easy installation and maintenance.

Applications include:

  • Cooling systems
  • Lubrication systems
  • Mobile hydraulic equipment
  • Industrial process control systems
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Unit of Measure
Items AL Alarm-450x469.jpg
M3A4AB02
Flow Rate Alarms
List Price $633.00
AL Alarm-450x469.jpg
M3A4AB05
Flow Rate Alarms
List Price $633.00
AL Alarm-450x469.jpg
M3A4AB10
Flow Rate Alarms
List Price $633.00
AL Alarm-450x469.jpg
M3A4AB15
Flow Rate Alarms
List Price $633.00
AL Alarm-450x469.jpg
M3A4AE02
Flow Rate Alarms
List Price $633.00
Manufacturer Name N/A AW-Lake Company
Type N/A Flow Rate Alarm
Meter Style N/A 1 Switch
Port Size Range N/A 1/4" - 1/2"
Material N/A Aluminum
Operating Pressure [Max] N/A 40 bar600 psi
Fluid Media N/A Air & Gases
Porting/Thread Type N/A 1/2" NPTF, dry seal N/A 1/2" NPTF, dry seal N/A 1/2" NPTF, dry seal N/A 1/2" NPTF, dry seal N/A #6 SAE, O-ring seal
Flow Range - Liquid N/A
Flow Range - Air N/A 4 to 23 scfm N/A 5 to 50 scfm N/A 10 to 100 scfm N/A 25 to 150 scfm N/A 4 to 23 scfm
Optional Flow Direction N/A Standard Flow, Uni-Directional
Measuring Accuracy N/A ±2.0% of Full Scale
Repeatability N/A ±1% of full scale
Flow Measuring Range N/A 0.1 to 150 gpm0.5 to 550 L/min1 to 600 slps2 to 1300 scfm
Operating Temperature [Max] N/A 185 ºF85 ºC
Standard Calibration Fluids N/A Air meters: air at 70°F (21°C), 1.0 sg and 100 PSIG (6.8 Bar) Oil meters: DTE 25® at 110°F (43°C), 0.873 sg Water meters: tap water at 70°F (21°C), 1.0 sg
Alarm Switch Dead-band N/A 4% of full scale
Alarm Switch Contacts N/A SPDT (dry contact). 10 amps and 1/4 hp, 125 or 250 VAC. 1/2 amp, 125 VDC (regulated); 1/4 amp, 250 VDC (regulated); 3 amps, 125 VAC “L” (lamp load)
Filtration Requirements N/A 74 micron filter or 200 mesh screen minimum
Viscosity N/A Standard viscosities up to 110 cSt. For viscosities between 110 to 430 cSt contact factory.
Enclosure & Cover Material N/A Painted Aluminum
Seal Material - Non-wetted N/A Buna-N®
Window Material N/A Pyrex®
Din Connector Material N/A Polyamide
Casing & End Ports Material N/A Anodized Aluminum
Seal Material - Wetted N/A Buna-N (STD), EPR, FKM or Kalrez®
Transfer Magnet Material N/A PTFE coated Alnico
All Other Internal Parts Material N/A Stainless Steel
A N/A 6-9/16 in167 mm
B N/A 2-3/16 in56 mm
C N/A 4 in101 mm
D N/A 1-7/8 in47 mm
E N/A 4-7/8 in128 mm
F N/A 2-1/4 in57 mm
Quantity Available N/A {Unknown} N/A {Unknown} N/A {Unknown} N/A {Unknown} N/A {Unknown}
*1-5 Pieces N/A {Unknown} N/A {Unknown} N/A {Unknown} N/A {Unknown} N/A {Unknown}
*6-10 Pieces N/A {Unknown} N/A {Unknown} N/A {Unknown} N/A {Unknown} N/A {Unknown}
Std Lead Time N/A {Unknown} N/A {Unknown} N/A {Unknown} N/A {Unknown} N/A {Unknown}