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Contact: (415) 454-3729; herb@derex.com
Overstock Specials: Accessories; Transducer Sets; Flow Meters
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Dynasonics
Ultrasonic Flow Meters
Transit Time and Doppler

RENTALS
PURCHASE
DXN
TFXP
TFXB/E

Preso
Pitot Tube Flow Meters Elliptical Design


PURCHASE

Blancette
Positive Displacement Flow Meters


PURCHASE

Hedland
Variable Area Flow Meters


PURCHASE

Ultrasonic Portable Flow Meters

Available Rentals

DXN: Hybrid; Doppler/Transit Time; Energy Measurement

RENT IT

TFXP: Portable; Transit Time; Flow Meter

RENT IT

TFXB: Transit Time; Flow Meter; Energy Measurement

RENT IT

DXN: Portable Ultrasonic Transit Time/Doppler Flow Meter: Hybrid Doppler / transit time meter automatically switches and selects best technology. Closed full pipes size ½" and higher.
TFXP: Portable Ultrasonic Transit Time Flow Meter: For measuring piping systems larger than 2". Optional transducers are available for pipe sizes ½" to 2".
TFXB: Permanent or portable Transit Time Flow Meter: The TFX Ultra is available in two versions: a stand-alone flow meter, and an energy flow meter used in conjunction with dual clamp-on RTDs.

Get a Rental Quote: (415) 454-3729

Racine
Vortex Flow Meters for Steam Gases and Liquids


PURCHASE

Blancette
Turbine Flow Meters


PURCHASE

DFT
Control Valve Boiler Feedwater Severe Service
Abrasive Slurries


PURCHASE

SynFab
High Temperature Boiler / Kiln Cameras


PURCHASE

Our Transit Time and Doppler Ultrasonic Flow Meter rentals display rate and total in pipes 1/2" diameter to 120" diameter.

Ultrasonic Portable Transit Time Flow Meters satisfy 90% of Flow Meter applications.

City Water

Ultra-Pure Liquids

Hydraulic Oil

Non-Carbonated Beverages

Enhanced Ultrasonic Doppler Flow Meters are for liquids with greater than 25 ppm of 30 micron size suspended solids or entrained gases.

Raw Sewage

Waste Activated Sludge

Mining Slurries

Preprocessed Crude Oil

Ultrasonic Doppler Flow Meters are for liquids with greater than 100 ppm of 100 micron size suspended solids or entrained gases.

DXN
Doppler/Transit Time
Hybrid
Flow Meter

Dynasonics DXN Ultrasonic Hybrid Doppler Transit Time Portable Flow Meter

Automatically switches between

transit time
Doppler
energy measurement

The DXN includes a 7” full color touch-screen, site-specific settings, an advanced software interface and a rugged hardware platform.

Nugent
Oil Filters


PURCHASE

DFT
Non-Slam Check Valves


PURCHASE

Status Instruments Temperature Transmitters Data Loggers


PURCHASE

Igniters - Boilers - Gas Turbines
Dual Electrode for Truck Exhaust


PURCHASE

Waiste Activated Sludge

Return Activated Sludge

Carbonated Beverages

Dredging Applications

Crude Oil

Concrete Slurries

Quotations and Estimates

Please contact us with your project specs:

Phone:

Fax:

Email:

Online:

(415) 454-3729
(415) 329-2420
info@derex.com
Web Contact Form

Derex Inc. PO Box 2983, San Rafael, Ca. 94912

Ultrasonic flow meters have no moving parts, they suffer no pressure loss and they provide almost 100% maintenance-free operation - important advantages over conventional mechanical meters.

TFXB
Ultrasonic Transit Time
Flow Meter

This meter is not designed to be portable but can work as a portable

The TFX Ultra transit time flow meter is equipped with either two transducers that are clamped on the outside of a closed pipe at a specific distance from each other or a single clamp-around design.

Continuous Boiler Blowdown Valve


PURCHASE

Rupture Pin Relief Valves
Operate at 95% set pressure


PURCHASE

Status Instruments Data Loggers


PURCHASE

Igniters - Boilers - Gas Turbines
Dual Electrode for Truck Exhaust


PURCHASE

Ultrasonic flow meters are invariably more accurate and reliable than many competing systems. The case for ultrasonic flow meters is now stronger than ever with the emergence of 3-beam ultrasonic flow meters developed to replace the mass, vortex, positive displacement (PD) and turbine flowmeters that are used to measure non-conductive fluids.

Ultrasonic flow measurement uses the transit time principle, whereby opposite sending and receiving transducers are used to transmit signals through the flow. The signal travels faster when moving with the flow stream rather than against the flow stream. The difference between the two transit times is used to calculate the flow rate.

low-cost installation, no pressure head loss, no moving parts to maintain or replace, no fluid compatibility issue, and a large, bi-directional measuring range

How It Works:

Transducers clamp onto the outside of the pipe in one of three configurations: W, V, or Z. The mount letter refers to the signal path.

Dynasonics TFXP (DTFXP) Transit Time Portable Ultrasonic Flow Meter

Dynasonics
Ultrasonic Flow Meters
Transit Time and Doppler

RENTALS
PURCHASE
DXN
TFXP
TFXB/E

Preso
Pitot Tube Flow Meters Elliptical Design


PURCHASE

Blancette
Positive Displacement Flow Meters


PURCHASE

Hedland
Variable Area Flow Meters


PURCHASE

We Ship Internationally

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International

DXN
Doppler/Transit Time
Hybrid
Flow Meter

Automatically switches between

transit time
Doppler
energy measurement

The DXN includes a 7” full color touch-screen, site-specific settings, an advanced software interface and a rugged hardware platform.

Ultrasonic Portable Flow Meters

Available Rentals

Get a Rental Quote: (415) 454-3729

Your Name:

Email:

Phone:

Your Project:

Our Transit Time and Doppler Ultrasonic Flow Meter rentals display rate and total in pipes 1/2" diameter to 120" diameter.