Additel ADT761-LA/MA/HA Automated Pressure Calibrators

Additel ADT761 Pressure Calibrator

  • Fully automated pressure calibrator with built-in pressure generator / controller to as high as 600psi (40bar) or 615psi.a (41 bar.a) 
  • 0.02%FS accuracy 
  • Dual pressure modules 
  • Built-in filter and liquid trap with venting system prevents contamination of the calibrator 
  • Portable (12.4 lb)


With a built-in high performance electronic pump and precision pressure controller, Additel's 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.

Pressure Range
Ordering Info
Video Demo

Pressure Range 
Pressure generated by built-in pump and controlled automatically from 90% vacuum to 600 psi (40 bar)
Pressure measured with external pressure modules (160 series) to 10,000 psi (700 bar)
Accuracy (Fully temperature compensated) 0.02%FS 
Control Stability
Contamination prevention system
Built-in filter and liquid trap with venting system prevent contamination of the calibrator 
Solid particles can be blocked by built-in filter
A small amount of Liquid can be collected by the built-in liquid trap
Both solid particles and liquid can be blown out through the venting system
Automation and Test Program
Fully Automated pressure calibration
Task preset and auto run
Auto step
Easy to Use
User friendly interface 
Intuitive icon driven menu structure
Sourcing and Measuring electrical signals
Measure mA or V with 0.01% RD + 0.005%FS accuracy
Source/sink 0 to 22mA current
24 VDC loop power supplied to pressure transmitter during test
Automated switch test
Misuse Protection
Up to 30V misuse protection  on any two sockets
7" LCD color screen (800X480)
Documenting and data logging
Task management capability
Internal memory stores 200 tasks
Download tasks and upload results
HART Communication capability
Support HART instrumentation
Rechargeable battery: 
Rechargeable battery with up to 8 hours operation between charges
Leak testing: 
Apply leak test to an external pressure system to determine the magnitude of pressure variations due to leaks
Pipeline Protection: 
Special design the pipeline layout to avoid possible blockage and leakage
Only 12.4 lb
Multi Lingual Interface
English, German, French, Italian, Spanish, Portuguese, Simplified Chinese (Traditional Chinese, Japanese and Russian are available per request)
NIST Traceable: 
NIST traceable calibration with data (included)

Control Stability
Pressure Connections
G1/8 Female on calibrator   Two 1/4NPT(or 1/2NPT, 1/4BSP, M20×1.5) female hand-tight connectors on the external pressure manifold (included)
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
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
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
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  296mm X186mm X180mm
Weight 12.4 lb (5.6 kg)
Warranty 18 months

Pressure Range

Pressure Range 
Pressure Module 1 
Pressure Module 2
 ADT761-LA -0.95 to 7 bar
(-13.5 to 100 psi)
-0.95 to 2.5 bar
(-13.5 to 35 psi)
0.95 to 7 bar
(-13.5 to 100 psi)
 0.05 to 8 bar.a
(1.2 to 115 psi.a)
 0.05 to 3.5 bar.a
(1.2 to 50 psi.a)
 0.03%FS  0.05 to 8 bar.a
(1.2 to 115 psi.a)
-0.90 to 25 bar
(-13 to 375 psi)
-0.9 to 2.5 bar
(-13 to 35 psi)
-.09 to 25 bar
(-13 to 375 psi)
 0.01 to 26 bar.a
(1.7 to 390 psi.a)
0.1 to 3.5 bar.a
(1.7 to 50 psi.a)
0.1 to 26 bar.a
(1.7 to 390 psi.a)
ADT761-HA  -0.90 to 40 bar
(-13 to 600 psi)
-0.9 to 2.5 bar
(-13 to 35 psi)
-0.9 to 40 bar
(-13 to 600 psi)
 0.01 to 41 bar.a
(1.7 to 615 psi.a)
 0.1 to 3.5 bar
(1.7 to 50 psi)
 0.03%FS   0.1 to 41 bar.a
(1.7 to 615 psi.a)

* One year accuracy (including yearly stability) except ADT761-LLP which is 0.05%FS calibration accuracy and 0.05%FS yearly stability.

* * Additel ADT761 calibrators support ADT160 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. 

Electrical Measurement and Source Accuracy

Range  Resolution  Accuracy 
 Voltage Measurement
±[0.01%RD + 0.005%FS]
 Current Measurement 
 ±[0.01%RD + 0.005%FS]
 Current Source 
0.000 to 22.000mA 
 ±[0.02%RD + 0.005%FS]
 On-Off Measurement   if the switch has detective voltage, the range is from 3V to 24V
 DC 24v ouput  24V ± 0.5V, max: 50mA


Additel ADT761 Ordering Guide 









ACCESSORIES [included]

 Code      Description  Qty 
 ADT106   External Pressure Manifold [except ADT761-LLP]  1 pc 
 9618   110V / 220V external power adapter   1 pc
 9722  Chargeable Li-ion battery 1 pc
 9022  Test leads for calibrator 1 sets
 9020  Short circuit cable 1 set
 9907  Carry case for ADT761 calibrator and accessories 1 pc
 9060  Pressure module connection cable 1 pc
 O-rings [except ADT761-LLP] 20 pcs
 Manual 1 pc
 Tools 1 set
 Hose 2 pc
 NIST traceable Calibration Certificate 1 pc


ACCESSORIES [optional]

  Code    Description 
  ADT100-761-4N   Hose test kit, 5 feet flexible hose, 04mm tube to 1/4NPT hand-tight quick connector
  ADT100-761-4B  Hose test kit, 5 feet flexible hose, 04mm tube to 1/4BSP hand-tight quick connector
  ADT106-N  External Pressure Manifold [with two 1/4NPT hand-tight quick connectors]
  ADT106-B  External Pressure Manifold [with two 1/4BSP hand-tight quick connectors]
  ADT106-M  External Pressure Manifold [with two M20X1.5 hand-tight quick connectors]
  ADT160  Pressure modules [please check Additel AST160 datasheet]
  9060  Pressure module connection cable

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