Extech SD750 3-Channel Pressure Datalogger

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Records data to SD card in Excel® format

Extech’s 3-Channel Pressure Data logger allows technicians to easily monitor and record pressure levels from three sources using one meter instead of three. Applications include pressure measurements from hydraulic, pneumatic, air compressor and process gas systems, as well as other industrial applications. Complete with six AAA batteries, 2G SD card, universal AC adaptor, 3 connectors, and mounting bracket.

CE    1 Year

PDF Logo    SD750 Datasheet
PDF Logo    SD750 User Manual
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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.

PT150-SD-Small

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

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