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665 Dual Input Differential Manometer with Data Logging

665L Dual Input Tuffman up to 100psi (6.89 Bar) Digital Manometer for Liquids


665L Manometer With Data Logging. Dual Input Differential Manometer with ±100 psi range and 0.01 psi resolution.

In stock


Dual Input Differential Manometer with ±100 psi range and 0.01 psi resolution. Can be used in non-corrosive liquid applications. Data logging with optional A665 software and docking station. Seven units of pressure: inH2O, mbar, KPa, PSI, mH2O, mmHg, inHg, Auto power off, Record/Min/Max, Backlight display, Zero function, Trim mode to stabilize readings. ¼” NPT fittings.

  • Differential input with +/-100psi range
  • Can be used in non-corrosive liquid applications
  • Seven units of measure (bar, kPa, PSI, mmHg, inHg, mH2O,  inH2O)
  • Data Logging: Record test data with time stamp and display with optional software
  • PC Communication: IR to USB Interface and PC Application software (optional p/n A665)
  • Display: 5 digit dual line with backlight
  • Printing: Print test results directly to the optional A740 IR printer
  • Data Storage: Save up to 16 readings
  • Min / Max: Records Min/Max readings
  • Auto Off: Conserve battery power



Product Documentation & Softwarepdf-icon1

Click below to view or download product documentation PDFs and Data Logging Software:

665L Manual

665L Data Sheet

TPI665L Application (ZIP)


 Model 665L Specifications
 Measurement Range±101.5 psi (±7bar)
 Display5 Digit Dual line LCD with backlight
 Input TypeDifferential (1/4” NPT)
 Resolution (max)0.01 psi (0.001 bar) (0.1 inH2O)
 Accuracy0.2% Full scale
 Repeatability0.1% Full scale
 Mean Temperature Coefficient0.1% of reading per ºC
 FunctionsOne Touch Zero, Data Hold, Back-light, Unit Selection, Smoothing, Auto power Off, Min / Max Record, Resolution Selection
 Units of Measure7 Units (bar, kPa, PSI, mmHg, inHg, mmH2O, inH2O)
 Data logging5000 Data, 1sec ~ 24 hour
 Data Storage16 data points
 CommunicationIR to USB Interface and PC Application software (optional p/n A665)
 Battery TypeAA (1.5V)*2 alkaline (MN1500, LR6)
 Battery Life600 hours (Typical)
 Auto Power Off20 minutes
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