Description 

This is a portable, handheld clamp-on ultrasonic flow metre that is used to measure the flow speed of liquids in metal, plastic, and rubber pipes and tubes with a diameter of 20-108 mm (about 2-28 in.) without damaging the pipe or tube and with high accuracy. This ultrasonic flow metre is great for use in the oil and gas, water and wastewater, chemical, food and beverage, pharmaceutical, metals and mining, pulp and paper, power, and heating, ventilation, air conditioning, and refrigeration (HVACR) industries. It has velcro-strap clamps that make it easy to move the electroacoustic transducers.

acetone, alcohol, ammonia, benzene, butyrate, chloroform, ethanol, ethyl alcohol, ethyl ether, freon R 12, petrol, glycerin, glycol, isobutanol, isobutane, isopentane, kerosene, linseed oil, methanol, 1-propanol, antifreeze, lubricating oil, silicone oil, transformer

Using the transit-time principle, the following equation is used to figure out the flow rate:

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v = 

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v = measured velocity
T1 = run time of the ultrasonic signal in the flow direction
T2 = run time of the ultrasonic signal against the flow direction
L = length of the ultrasonic wave
α = ultrasonic signal angle to the flow

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The transit-time principle says that pipes must be full, with no bubbles or particles.

Note: SOFT-PCE-TDS software is needed to transfer data to a computer. This software is sold separately. For more information, see "Accessories."

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Each PCE-TDS series metre is made in Germany by PCE Instruments and calibrated at the factory (without any documentation). PCE has a valid DAkkS calibration certificate for the reference display on the in-house test stand that is used for calibration. This makes sure that the data can be traced back to the German national standard set by the Physikalisch-Technische Bundesanstalt (PTB). Please keep in mind that the measured values of the metre depend on the shape, material, and coating of the pipe, the type, temperature, and speed of the medium; and the type of sensor and measuring method.

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• 0.5% linearity

• 0.2% repeatability

• Bi-directional flow measurement

• Quick and adjustable response time

• Eliminates interfering frequencies

• Includes data logger functionality

• Stores up to 2000 measurement values

• Auto power-off battery-saving function (can be disabled)

• Saves time- and date-stamped measurement data to internal memory

• Rechargeable, battery-operated flow measuring device

Note: To transfer data to a computer, SOFT-PCE-TDS software is required. SOFT-PCE-TDS software is sold separately - see accessories for details.

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Specifications 

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Measuring range                                                  -32 ... 32 m/s, -105 ... 105 ft/s

Resolution                                                             0.0001 m/s, 0.00033 ft/s

Accuracy for DN ≥ 50 mm:                                  ± 1.5% of the measured value

for DN < 50 mm:                                                   ± 3.5% of measured value

Reproducibility                                                      ± 1.0% of the measured value

Units                                                                       Meters, feet, cubic meters, litres, cubic feet, gallon, oil barrel, liquid barrel, million gallon

Response time                                                      0 ... 999 seconds, freely configurable

Pipe diameter                                                        DN 15 ... 700, 20 … 720 mm / approx. 3/4" ... 28"

Measuring media                                                  All liquids with an impurity <5% and a flow >0.03 m³/h

Heads                                                                     Type M1 and S1

Cable length                                                           Approx. 5 m / 16.4 ft each (x 4)

Display                                                                    4 x 16 LCD, 7 digits for net flow, positive and negative flow

Power supply                                                         3 x  AAA Ni-H rechargeable batteries

Battery life                                                              Approx. 10 hours continuous use at full charge

Battery charger                                                     100 .. 240V / AC

Interface                                                                 RS-232C

Memory                                                                  Stores up to 60,000 values

Housing material                                                   ABS plastic

Dimensions                                                             Device:
                                                                                 100 x 66 x 20 mm / 3.93 x 2.60 x 0.79 in
                                                                                 Transducers:
                                                                                 2 x M1 each 60 x 45 x 45 mm / 2.36 x 1.77 x 1.77 in
                                                                                 2 x S1 each 90 x 85 x 24 mm / 3.54 x 3.35 x 0.95 in

Operating temp.                                                     0 ... 70ºC / 32 ... 158ºF

Weight                                                                     514 g / 1.14 lb (with batteries)

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Delivery Scope

1 x PCE-TDS 100H Ultrasonic flow meter
2 x Sensors TDS-M1
2 x Sensors TDS-S1
2 x 5 m / 16.4 ft transducer connection cables
4 x Velcro-strap clamps
3 x AAA Ni-H rechargeable batteries
1 x Battery charger
1 x Container of coupling gel
1 x Measuring tape
1 x Carrying case
1 x User manual

Note: To transfer data to a computer, SOFT-PCE-TDS software is required. SOFT-PCE-TDS software is sold separately - see accessories for details.

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