The Extech SD750 Pressure Datalogger uses 2‐wire pressure transducers (optionally available). The meter displays and stores pressure measurement data over time storing the information on a SD card whose data can then be downloaded to a PC.
Extech SD750 3-Channel Pressure Datalogger Features
- Triple LCD simultaneously displays 3 pressure channels
- Up to 5000psi with 4-20mA output
- 4-20mA input with readout in 9 units of measure
- Datalogger date/time stamps and stores readings on an SD card in Excel® format
- User-selectable data sampling rate: 5, 10, 30, 60, 120, 300, 600 seconds or auto
- Complete with six AAA batteries, 2G SD card, universal AC adaptor, three connectors, and mounting bracket
- Transducers sold separately
| Meter Specifications | |
| Display | 60 x 50 mm (2.4 x 2.0”) LCD |
| Measurements | Pressure from up to 3 two‐wire pressure transducers |
| Input signals | Linear 4‐20 mA DC process signal |
| Accuracy | ± (0.5% + 2 digits) of reading (meter only, does not include transducer error) |
| Memory Card | SD memory card, 1 GB to 16 GB (4 GB maximum recommended) |
| Datalogger Sampling Rate | 5/10/30/60/120/300/600 seconds or Automatic |
| Datalogger errors | 0.1% maximum for total saved data (typical) |
| Temp. Compensation | Automatic |
| Display update rate | Approx. 1 second |
| Data Output | RS 232 Serial Interface; 16‐bit data stream via 3.5mm jack |
| Operating Temperature | 0 to 50°C (32 to 122°F) |
| Operating Humidity | Less than 85% RH |
| Power Supplies | Six (6) ‘AAA’ Alkaline, heavy duty 1.5 V batteries and |
| 9V AC adaptor. Both methods must be used for proper operation. | |
| Batteries maintain time and date (even when the AC adaptor is disconnected) | |
| AC adaptor power all other functions | |
| Weight | 199 g |
| Dimensions | 132 x 80 x 32mm |
| Optional Accessories | 2‐wire transducers, RS232 serial cable, RS232 USB adaptor |
3-Channel Pressure Datalogger Specifications
| Specifications | 30 psi | 150 psi | 300 psi |
|---|---|---|---|
| bar | 0.002 to 2 bar | 0.01 to 10 bar | 0.02 to 20 bar |
| psi | 0.02 to 30 psi | 0.2 to 150 psi | 0.2 to 300 psi |
| kg/cm2 | 0.002 to 2.040 kg/cm2 | 0.01 to 10.19 kg/cm2 | 0.02 to 20.40 kg/cm2 |
| mmHg | 2 to 1500 mmHg | 10 to 7500 mmHg | 20 to 15000 mmHg |
| inHg | 0.05 to 59.05 inHg | 0.2 to 295.2 inHg | 0.5 to 590.5 inHg |
| mH2O | 0.02 to 20.40 mH2O | 0.1 to 101.9 mH2O | 0.2 to 204.0 mH2O |
| inH2O | 1 to 802 inH2O | 5 to 4010 inH2O | 10 to 8020 inH2O |
| atm | 0.002 to 1.974 atm | 0.01 to 9.87 atm | 0.02 to 19.74 atm |
| kPa | 0.2 to 200.0 kPa | 1 to 1000 kPa | 2 to 2000 kPa |
| Datalogging | Datalogs using 4GB SD memory card | ||
| Dimensions/ Weight | 132x80x32mm / 199g | ||
Optional Pressure Transducers:
Universal Pressure Transducers available in three ranges (30psi, 150psi, and 300psi). Purchase the transducer with the range that best fits your application needs.
| Sensor type | PT30 ‐ SD | PT150 ‐ SD | PT300 ‐ SD | ||||||||||||||||||||||||||
| Max. | Max. | Max. | |||||||||||||||||||||||||||
| Range | Resolution | Range | Resolution | Range | Resolution | ||||||||||||||||||||||||
| bar | 2 | 0.002 | 10 | 0.01 | 20 | 0.02 | |||||||||||||||||||||||
| Psi | 30 | 0.02 | 150 | 0.2 | 300 | 0.2 | |||||||||||||||||||||||
| Kg/cm2 | 2.040 | 0.002 | 10.19 | 0.01 | 20.40 | 0.02 | |||||||||||||||||||||||
| mm Hg | 1500 | 2 | 7500 | 10 | 15000 | 20 | |||||||||||||||||||||||
| inch Hg | 59.05 | 0.05 | 295.2 | 0.2 | 590.5 | 0.5 | |||||||||||||||||||||||
| meter H20 | 20.40 | 0.02 | 101.9 | 0.1 | 204.0 | 0.2 | |||||||||||||||||||||||
| inch H20 | 802 | 1 | 4010 | 5 | 8020 | 10 | |||||||||||||||||||||||
| Atmosphere | 1.974 | 0.002 | 9.87 | 0.01 | 19.74 | 0.02 | |||||||||||||||||||||||
| kPA | 200.0 | 0.2 | 1000 | 1 | 2000 | 2 | |||||||||||||||||||||||
