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Testo 6445-1 Flowmeter - Totalizer 80m/sec - 0699 6445 1
Item #:
0699-6445-1
Brand:
Testo
Share this product:
0699 6445 1 6445-1 Flowmeter - Totalizer 80m/sec by Testo
- Calibrated to air speed in m/s (calculates the volumetric flow rate Nm³/h if the diameter is entered)
- Choice of measuring range: up to 80 Nm/s or up to 150 Nm/s
- Bar probe design: versatile use for diameters from DN 50 to DN 300
- Output signals: Analog output: 4 to 20 mA (4-wire), Pulse output, RS232 digital output
- Including 5-point calibration certificate
- Robust, thermal silicon chip sensor
- Optional display: Totalizer function (sum display)/speed display/physical units (including volumetric glow rate Nm³/h) can be selected via software
| Sensor | Thermal silicon chip sensor, mass flow principle |
| Media | Compressed air, air, nitrogen, non-corrosive gases (caution: not approved for use in explosive areas) |
| Display | Optional, part no. 0699 6445/3, two-line |
| Measuring range | 0 to 80 Nm/s, min. 1 Nm/s (0699 6445 / 1) or 0 to 150 Nm/s, min. 2 Nm/s (0699 6445 / 2) |
| Accuracy | ±3 % of reading, ±0.4 % of final value |
| Pressure dependency | Measuring principle independent of pressure (mass flow measurement) For flows < 10 Nm/s: pressure influence 0.3 % of reading per bar |
| Temperature dependency | Compensated at 25 °C, deviating temperatures: 0.1% of reading/Kelvin |
| Response time | t90 approx. 5 seconds |
| Voltage supply | 12 to 24 V DC ±10 %, power consumption < 100 mA (starting current briefly 500 mA) |
| Electrical connection | Precision plug connection for distributor box, 0699 6445/4 or for cable 0699 6445/5 |
| Analog output | 4 to 20 mA = 0 to 80 or 0 to 150 Nm/s, 4-wire, max. load = 500 ohm, max. length 250 m (use shielded cable!) |
| Pulse output | Floating contact, 12 to 24 V DC switching voltage from external meter, corresponding to S0 meter signal (DIN 43864). Pulse value depends on internal diameter set |
| Digital output | RS 232, max. cable length 15 metres, easily accessible connected to distributor box for 0699 6445/4 |
| Process conditions | 0 to +50 °C (ideally +20 to +30 °C), PN 16, (max. 16 bar), rel. humidity < 90% RH (no lasting effect after re-drying), air quality (ISO 8573: classes 1/4/1) |
| Ambient temperature | -10 to +60 °C |
| Storage temperature | -40 to +80 °C. Avoid build-up of ice |
| Standard reference | Standard flow rate (e.g. Nm/s) and standard volumetric flow rate (e.g. Nm3/h) are based on DIN ISO 2533, 15 °C, 1013.25 mbar, 0% RH |
| Weight | Compressed air meter: 840 g, display: 140 g, 10 metre cable: 640 g, clamp ring screw connection: 100 g |
| Housing | Aluminium, painted. IP 65, however only approved for use in indoor installations |
| EMC | EN 50082-1 |
