Orange Research home page  

 Orange Research home pageDifferential pressure gauges, switches and transmitters selection guideFlow gauges, switches and transmitters selection guideOrange Research contact

 

Flow Switches

0.1 to 1.5 GPM

Fixed Set-Point Flow Switches

with Piston Sensor for Liquids

 

Features

>> Compact size

>> Low cost

>> OEM design

>> Brass or stainless steel

 

Specifications

30000 Series fixed set-point flow switch

 

Set-points

0.1, 0.25, 0.5, 0.75, 1.0, 1.5 GPM

Wetted parts - Brass models

Brass and stainless steel

Wetted parts - SS models

Stainless steel

Maximum pressure

1000 psig (200 bar)

Accuracy

10% FS

Repeatability

1%

Dead Band

20% max.

Temperature

-20 F to +200 F (-29 C to +93 C)

Porting

1/4" NPT
   

Electrical

 

Options

SPST-N.O., SPST-N.C. or SPDT

Ratings - Pilot duty

20 VA max., 50-250 VAC

Ratings - resistive load

20 W max., 120-240 VAC or VDC

Wires

No. 18 AWG. wire, 24" long, PVC

To view catalog pages click here

 

Dimensions

 

30000 Series fixed set-point flow switch dimensional drawing  

 

How to Order

Select model based on switch set-point and materials. Special calibration and designs are available. Contact Orange Research or local Orange Research distributors for additional options and pricing information.

 

 

BRASS PART NUMBERS

STAINLESS STEEL PART NUMBERS

Set-point

SPST N.O.

SPST N.C

SPDT

SPST N.O.

SPST N.C

SPDT

0.1 GPM

30101

30141

30121

30201

30241

30221

0.25 GPM

30102

30142

30122

30202

30242

30222

0.5 GPM

30103

30143

30123

30203

30243

30223

0.75 GPM

30104

30144

30124

30204

30244

30224

1.0 GPM

30105

30145

30125

30205

30245

30225

1.5 GPM

30106

30146

30126

30206

30246

30226


Fixed Set-Point Flow Switches

Our 30000 Series fixed set-point flow switches have factory-preset settings. The many features and the adjustability found on our other models have been designed out.

Their compact size and basic profile results in low-cost switches that can be mounted where space is limited. This makes them popular for OEM applications where simple flow switch actuation is required.

Rugged materials are used to allow for long-term, high-pressure use. The switches are popular for portable systems where shock and vibration are common. Stainless steel springs and brass or stainless steel pistons and pressure bodies allow for use in a variety of applications, including lubricating systems, chillers, coolers and heat exchangers.

How It Works

Designed for in-line use, the fluid enters the end connection and exits the side port. As the fluid passes through the unit it pushes against a spring-loaded piston magnet sensor. As the sensor magnet moves into proximity of the reed switch, the switch is activated.

30000 Series flow switch cutaway drawing

 

Calibration

The switches are calibrated on increasing flow in the vertical position on water at 70 F. For other fluids or conditions special calibration is available. In this case, specify orientation, fluid, specific gravity and viscosity.

 

Back to Top


Orange Research Incorporated • 140 Cascade Boulevard • Milford CT 06460
(203) 877-5657 • FAX: (203) 783-9546 • Toll-Free: 1-800-989-5657