Blue Sky

Flowmaster 250

Hydrant flow and pressure test instrument – Model 34-2001

Easy and simple to use everywhere.

The TSI Flowmaster provides the most reliable and accurate flow and pressure measurements. Invaluable for hydrant testing, pump testing, flushing and water main condition testing. Simply attach, switch on and take flow and pressure readings. Saves time and money.

Measures flow rates up to 3,000lpm and pressures up to 25 bar. The electromagnetic sensor has no moving parts – measurement is not affected by debris in the water stream. Weighing only 12kg, the TSI Flowmaster has a convenient carry handle contributing to its overall ease use.

“The Flowmaster 250 is a robust, reliable but simple to use measuring instrument. Just ‘Plug and Read. The product is technically superior and its cost efficient”

Mahyuddin Bin Alias, Perisai Cekap Sdn Bhd, Malaysia

Technical Data fpr Flowmaster (EN292 & EN60204)


Art. No. 34-2001
Power Supply: Internal battery pack 12V DC, 2.4Ah Separate charging device included
Operating temperature: -10 to +50 ºC Working pressure 16 bar, maximum pressure 25 bar.
Weight: 12.5kg.
Dimensions: 210 (H) x 240 (W) x 390 (L) mm


Type: Bourdon tube
Operating Range: 0 to 25 bar, ±1%, 60mm dial, dual bar/psi gauge.
Optional 0-25 bar digital pressure transducer with bright LED readout of pressure.
Art. No. 34-2005
Adapters: 2.5” BS Inst. M/F or 2.5” BSP male thread as standard.
Flanged to 4” BSP male or to ¾” male tapered adaptors also available.
Housing: LM25 aluminium.
Colour: Red RAL 3020/natural aluminium.


Type: Electromagnetic
Operating Range: 30 to 3,000lpm
Can be extended to 5,000lpm.
Accuracy: >750lpm: ±15lpm. < 750lpm: ± 2%

Digital readout of flow rate.

- 4-digit backlit LCD display
- 17.6mm digit size
- Bar chart of flow reading
- LPM or US GPM display


- Display of current flow rate
- Display of total volume used.

Read More »

Digital Flowmaster 250 DL

Portable flow & pressure test instrument with data logger. – Model 34-2005

The Flowmaster 250DL measures the flow rate and the pressure at every water drawing off point and produces verifiable reports. All measurements are digitally recorded and can be downloaded to a computer and predefined reports and graphs can be printed.

“TSI Flowmeters Ltd products are very well received on the market and we have always found TSI Flowmeters to be a reputable company with which to do business”

Brandschutztechnik Müller GmbH has been selling the TSI portable flow meter products in Germany since the year 2001.

Technical Data fpr Flowmaster (EN292 & EN60204) Model No. 34-2005


Type: Electromagnetic
Operating Range: 30 to 3,000 lpm, can be extended to 5,000 lpm
Accuracy: 30 to 750 lpm: ±15 lpm > 750 lpm: ± 2%

Digital readout of flow rate

- 4-digit backlit LCD display
- Volume readings to 1,000,000 litres
- Flow readings in LPM or in US GPM


- Display of current flow rate
- Display of total volume used

Power Supply: Internal battery 12V DC, 2.4Ah Up to 10 hours continuous operation External charging device included as standard. Mains charger is supplied with either UK, euro or USA style plug.

Operating temperature: -10 to +50 ºC
Weight: 12.5kg
Dimensions: 210 (H) x 240 (W) x 390 (L) mm
Housing: Solid and corrosion resistant LM25 aluminium
Colour: Red RAL 3020/natural aluminium


Sensor: Piezoresistive pressure transducer
Range: 0-25bar in 0.1bar increments
Accuracy: ± 1%
Readout: High brightness LED
Readings in BAR or PSI


- Record 12 hours of fl ow and pressure data at 1 second recording interval
- Upload data to laptop by USB
- Auto logging feature whereby data logging starts and stops automatically according to flow rate
- LED indication of logging in progress
- Can also log directly to PC using USB cable supplied


FMSv4 software for file management and report preparation is supplied.

Read More »



Transport case with castor wheels and extension handle. Weight 7kg.


For UK: 2.5” BS Inst. M/F
For North America: 2.5” NH
For EU: 2.5” BSP male thread
For Hose reels: 3⁄4” or 1” BSP

Follow Us

Join us on Facebook and Twitter.