Additel 761-L/M/H Automated Pressure Calibrator

Additel 761-L/M/H Automated Pressure Calibrator

  • Description
  • Features
  • Applications
  • Specifications
  • Order Info


With a built-in high performance electronic pump and precision pressure controller, the 761 series portable automated pressure calibrators provide a turn-key solution for calibration of gauges, transmitters, and switches both in the field and in the laboratory. In a portable package, this calibrator can automatically generate pressures from 90% vacuum to 600 psi (40 bar) with 0.005% FS pressure control stability and 0.02% FS accuracy. To improve the calibrator accuracy, two pressure modules with differing ranges are built-in and integrated with the internal pump and controller.

With optional external pressure modules (160 series), the 761 can measure pressures up to 10,000 psi (700 bar) with 0.025%FS accuracy. In addition to the pressure generation, control, and measurement capabilities, the 761 also features HART communication capability, supplies 24V loop power, and reads the current or voltage produced by the pressure transducers. The 761 is a state of the art automated pressure calibrator which brings automated pressure calibration to the field.

  • Fully automated pressure calibrator with built-in pressure generator / controller to as high as 600 psi (40 bar)
  • 0.02%FS accuracy
  • Dual pressure modules
  • Built-in filter and liquid trap with venting system prevents contamination of the calibrator
  • Portable (16.3 lb)
  • Dial Pressure Gauge Calibration
  • Digital Pressure Gauge Calibration
  • Pressure Transmitter Calibration
  • Pressure Switch Calibration
  • I/P Converter Calibration

• Control Stability
ADT761-LLP: < 0.05 Pa (0.0002 inH2O)

• Pressure Connections
One ADT100-761 Hose Test Kit with quick connector (included except with ADT761-LLP)
1/8 BSP female connector on calibrator
Two 1/4NPT(or 1/2NPT, 1/4BSP, M20×1.5) female hand-tight connectors on the external pressure manifold (included except with ADT761-LLP)

• External Pressure Module Connection
External pressure module connector

• Electrical Connection
0.156 inch (Ø4mm) banana sockets

• Documenting and data logging
Task management capability
Internal memory stores 200 tasks
Download tasks and upload results

• Display
7" LCD color screen (800×480)
Display rate: 5 readings per second

• Pressure Units
Pa, kPa, MPa, psi, bar, mbar, inH2O 4°C, mmH2O 4°C, inH2O 20°C, mmH2O 20°C, inHg 0°C, mmHg 0°C, kgf/cm2

• Power
Battery: Rechargeable Li-ion Polymer battery (included)
Li-Battery working time: ~8 hours
Recharge time: ~3 hours
External Power: 110/220V Power adapter (DC 27 V) (Included)

• Environmental Specification:
Operating temperature: 32°F to 122°F (0°C to 50°C)
Compensated Temperature: 32°F to 122°F (0°C to 50°C)
Storage temperature: -20°C to 60°C
Humidity: <90%, non-condensing

• European Compliance:
CE Marked

• Communication
RS232 (DB9/F, environmentally sealed)
Baud rate: 2400, 4800, 9600, 19200, 38400, 57600, 115200
Data length: 7 Bits, 8 Bits
Stop bit: 1 Bit, 2 Bits
Address: from 1 to 121

• Dimension
11.65" X 7.32" X 7.09"(296mm X186mm X180mm)

• Weight:
16.3 lb (7.4 kg)

• Pressure Range

TypeModelPressure RangePressure Module 1Pressure Module 2



Low/Differential Pressure


-25 to 25 mbar
(-10 to 10 inH2O)

-2.5 to 2.5 mbar
(-1 to 1 inH2O)


-25 to 25 mbar
(-10 to 10 inH2O)



-0.95 to 1 bar
(-13.5 to 15 psi)

-25 to 25 mbar
(-10 to 10 inH2O)


-0.95 to 1 bar
(-13.5 to 15 psi)


* One year accuracy (including 1 year stability). FS specification applies to the span of the module range.

** 0.05% FS accuracy (including 6 months stability). One year accuracy is 0.05% FS calibration accuracy combined with 0.05% FS one year stability.

*** Additel 761 calibrators support 160A series intelligent digital pressure modules that are available for gauge, vacuum and absolute pressure from -15 psi to 10,000 psi (-1 bar to 700 bar). Accuracy from 0.025%FS includes operation over 14°F to 122°F (-10°C to 50°C), one year stability and calibration uncertainty. For detailed specification refer to 160A series pressure modules datasheet.

• Electrical Measurement and Source Accuracy


Voltage Measurement



±(0.01%RD + 1.5 mV)

Current Measurement



±(0.01%RD + 1.5 μA)

Current Source

0.000 to 22.000mA


±(0.02%RD + 2.2 μA)

Switch Test

If the switch has detective Voltage, the range is from 3V to 24V

DC 24V output

24V ± 0.5V, max:50mA


ADT761 -

Pressure Range -

Pressure port type on external pressure manifold
(N = 1/4 NPT male)
(N2 = 1/2 NPT male)
(B = 1/4 BSP male)
(M = M20 x 1.5 male)