testo 6452 – flow rate transmitter 0.8 … 225 m³/h
Flow measurement - 0.8 ... 225 m³/h
- Suitable for pipe diameter DN 25
- Thread connection R 1
- Best system integration thanks to two analog outputs: 4 ... 20 mA
12 450:-
The testo 6452 flow transmitter fits the pipe diameter DN 25. Four measurement parameters in one instrument: air flow, totalizer, temperature and pressure.
- Thread connection R 1
- Direct compressed air measurement with simultaneous display of three measured values thanks to standard TFT display
- Best system integration thanks to two analog outputs: 4 … 20 mA
- Highest measurement accuracy and integrated measuring tube avoid measurement errors
- Simple and cost-effective installation
In industrial companies, compressed air is an important energy source with high consumption costs. With Testo flow transmitters you get a very accurate measurement of compressed air consumption, allowing you to identify the potential for energy savings and lower costs. The flow transmitters can also be used for a targeted implementation of an environmental management system – e.g. according to ISO 50001 or ISO 14001.
Another application is leakage monitoring in compressed air systems. The flow transmitter can also be used to perform a peak load analysis to determine if compressed air is being generated with sufficient capacity. The newly developed “all-in-one sensor” records not only compressed air consumption and temperature, but also pressure, eliminating the need for a separate pressure measurement.
The flow transmitters of the testo 645X family use the calorimetric measurement principle, which makes additional pressure and temperature measurements unnecessary. In addition, there is no wear and tear on moving parts.
See the data sheet under the Download tab for full technical data.
Included in delivery
testo 6452 Flow meter for compressed air
Product features | See the datasheet under the PDF tab above for full technical data. |
Diameter | DN25 |
Process connection | Thread connection R 1 |
Airflow measurement/adjustment range | |
Measurement range | 14 ... 3 750 l/min 0,4 ... 103,7 m/s 0,8 ... 225 m³/h |
Temperature Coefficient (TC) | ±0,07 % mv. 1/K |
Accuracy (within measurement range) | Class 141: ±(2% mv. + 0.5% final weight); class 344: ±(6% mv. + 0.6% final weight) ; air quality according to ISO 8573-1:2010; at medium temperature + 23 °C |
Repeat accuracy | 0.8% etc. + 0.2% final |
Max display | 0 ... 4500 l/min 0 ... 124,4 m/s 0 ... 270 m³/h |
Resolution | 2 l/min / 0,1 m/s / 0,1 m³/h |
Analog start point ASP | 0 ... 3 000 l/min 0 ... 83 m/s 0 ... 180 m³/h |
Analog endpoint AEP | 750 ... 3 750 l/min 20,7 ... 103,7 m/s 45 ... 225 m³/h |
Low Flow Shutdown LFC | 4 ... 40 l/min 0,1 ... 1,1 m/s 0,3 ... 2,4 m³/h |
Incremental area | 1 l/min / 0,1 m/s / 0,1 m³/h |
Measuring/adjusting range for totalizer | |
Measurement range | 0 ... 100 000 000 m³ | 0 ... 353 146 667.2 scf |
Max display | 0 ... 100 000 000 m³ | 0 ... 353 146 667.2 scf |
Pressure measurement/adjustment range | |
Measurement range | -1 ... 16 bar |
Max display | -1 ... 20 bar |
Resolution | 0,05 bar |
Analog start point | -1 ... +12,8 bar |
Analog endpoint | 2,2 ... 16 bar |
In steps about | 0,01 bar |
Temperature measurement/adjustment range | |
Measurement range | -10 ... +60 °C | +14 ... +140 °F |
Max display | -24 ... +74 °C | -11,2 ... +165,2 °F |
Resolution | 0,2 °C| 0,5 °F |
Analog start point | -10 ... +46 °C | +14 ... +114,8 °F |
Analog endpoint | +4 ... +60 °C | +39,2 ... +40 °F |
In steps about | 0,1 °C| 0,1 °F |
Scope of use | |
Media | Compressed air |
Average temperature | -10 ... +60 °C | +14 ... +140 °F |
My. breaking pressure | 64 bar |
Pressure load | max. 16 bar |
Electrical data | |
Operating voltage | 18 ... 30 VDC (according to EN 50178 SELV/PELV) |
Power consumption | < 80 mA |
Protection class | III. |
Protected against polarity reversal | Yes |
Outputs | |
Output signal | 2 analogue output signals; 4 ... 20 mA (scalable) |
Max. load | 500 Ω |
Short circuit protection | Yes |
Pressure measurement | |
Repeat accuracy | “±0.2% of full scale value |
Characteristic curve deviation | "< ±0.5% of final value; (BFSL = Best Fit Straight Line (minimum value adjustment)) |
The area's largest TC | "±0.15% final / 10 K |
Largest TC for the zero point | "±0.25% final / 10 K |
Temperature measurement | |
Accuracy | ±0.5 K; (flow at the limits of the flow measurement range) |
Reaction time | |
Response time | 0,1 s; (dAP = 0) |
Pressure measurement | |
Response time | 0,05 s |
Temperature measurement | |
Response dynamics | T09 = 0,5 s |
Environmental conditions | |
Ambient temperature | 0 ... +60 °C |
Storage temperature | -20 ... 85 °C |
Moisture | Max. permissible relative humidity < 90% |
Protection class | IP 65; IP 67 |
Approvals / tests | |
EMF | DIN EN 60947-5-9 |
Vibration resistance | DIN EN 68000-2-6 | 5 g (10 ... 2 000 Hz) |
Mechanical data | |
Weight | 1 598,5 g |
Material | PBT+PC-GF30; PPS GF40; 1.4301 (stainless steel / 304); 1.4305 (stainless steel / 303); 1.5523 (steel) galvanized; 2.0401 (brass / CW614N); FKM |
Contact with the media | 1.4301 (stainless steel / 304); 1.4305 (stainless steel / 303); FKM; glass passivated ceramic; PPS GF40; Al2O3 (ceramic); acrylate |
Display / buttons | |
Display | Color screen - 1.44" | pixel resolution - 128 x 128 |
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cabling
695:- Art.nr 0699 33935 meter long connection cable with screw thread M12 and loose ends. -
Power supplies for Hygrotest
2 590:- Art.nr 0554 1748Power supply 220 V - 24 V DC, for Hygrotest. Input: 110 ... 240 VDC. Output: 24 VDC/350 mA. -
Power supply unit (DIN rail mounting)
3 150:- Art.nr 0554 1749Mesh thread for DIN rail. Input: 85 ... 264 VAC | 110 ... 300 VDC. Output: 24 VDC/2.5 A.
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testo 6451 – flow transmitter 0,25 … 75 m3/h
Flow measurement - 0,25 ... 75 Nm3/h
- Suitable for pipe diameter DN 15
- Four measurement parameters in one instrument: air flow, totalizer, temperature, operating pressure.
- Best system integration thanks to two analog outputs: 4 ... 20 mA