• Fully automated pressure generation and control with integrated pump
• Selectable dual-range of ±30 inH2O(75mbar)or ±60 inH2O(150mbar)
• Accuracy to 0.01%FS
•Control stability of 0.003%FS

• External pressure modules available

• WIFI enabled communications

• Fully temperature compensated accuracy over 0°C to 50°C

• HART Communication and Profibus PA

• Large7-inch color touch screen display

• Easy-to-use icon based user interface

• ISO 17025-accredited calibration w/data included

The Additel 770 Low Pressure Controller is a new affordable controller to calibrate low pressure sensors, transducers, gauges and transmitters. This controller comes with a built-in pump that allows for stand-alone pressure generation without the need for an external supply. The Additel 770 is supplied with an internal quartz-base pressure transducer with dual-range selection of  ±30 inH2O(75mbar)or ±60 inH2O(150mbar). Utilizing multiple ranges with a single sensor design, allow you to achieve a 0.01%FS precision over the dual range selection. The Auto-range feature of the 770 will automatically select and switch the sensor range based on the set point pressure selected. This feature ensures you get the best accuracy and stability performance as you move throughout the range of the instrument.


There are two models for this Low pressure Controller. The Additel770S is the standard controller option without any electrical measurement capability. The Additel 770 has expanded functionality including electrical measurement and HART and Profibus PA communication.

Pressure range±30 inH2O (75 mbar)±60 inH2O (150 mbar)
Control stability0.003% FS
Precision (includes 1 year stability)0.01% FS
1 Year stability0.005% FS
MediaClean gas
Over-range indication1.2
Resolution4, 5, 6, or 7 digits
Pressure typeDifferential, gauge, Absolute
Warm up time15 minutes
Measurement unitsPa, hPa, kPa, MPa, bar, mbar, psi, mmHg@0°C,cmHg@0°C, mHg@0°C, inHg@0°C, inH2O@4°C, mmH2O@4°C, cmH2O@4°C, mH2O@4°C, mmH2O@20°C, cmH2O@20°C, mH2O@20°C, kg/m2, kg/cm2, mtorr, torr, atm, lb/ft2, tsi, user selectable
Minimum control pressure[3]0.001 inH2O0.01 inH2O
Power100 to 240V, 50/60 Hz
Pressure portsG1/8 F
Storage temperature-20°C to 70°C
Operating environment0-95% RH non-condensing
Display7 inch (17.8 cm) color, touch screen display
Weight31.7 lbs (14.4 kg)
Dimensions (DWH)16.5 x 17.3 x 5.2 inch (419 x 440 x 132 mm)
MountingStandard desktop, optional rack mount kit
Vibration1G 10Hz~500Hz
WiFi specifications802.11 b, g, and n
Stability indicatorUser selectable
Typical pressure control timeTypically 30 seconds
Operating modesControl, measure, and vent
Display modesController – shows pressure indication and control
Calibrator – shows pressure indication, control, and electrical measurement (excl ADT770S)
LocalizationEnglish, Chinese (simplified), German, Spanish, French, Italian, Portuguese, Russian, Japanese
Calibration certificationNIST-traceable certificate of calibration with data included
Warranty1 year

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