Pressure calibration pressure controller Additel ADT773

gasdifferentialdigital

Overview
The Additel ADT773 is a modular low-pressure differential pressure controller designed for precision control and calibration at low pressure ranges. It combines modular interchangeable pressure modules with an integrated low-pressure pump and an intuitive 7-inch color touchscreen to support a wide variety of laboratory and production calibration tasks.

Main features

• Pressure ranges from -380 inH2O (-0.95 bar) to 400 inH2O (1 bar)
• Two removable internal pressure modules
• Accuracy: 0.02 % FS
• Typical control stability: 0.001 % FS (≤ 0.003 % FS)
• High-speed pressure generation and control
• Optional barometric reference module
• Integrated differential low-pressure pump
• Large 7-inch color capacitive touchscreen
• Automated test functions: pressure switch test, leak test, PSV test, etc.
• Modular design for easy maintenance

Application and modular design
Quick-change pressure modules (replacement in about 30 seconds). Opening the upper edge of the chassis automatically vents pressure and enables safe installation or removal of ADT151 modules. The controller supports varied ranges through interchangeable ADT151 modules.

Speed and stability
20 % pressure step within 10 seconds to meet production test requirements. Typical control response time ≤ 10 s. Typical control stability ≤ ±(0.001 ~ 0.003) % FS depending on configuration and pressure.

Integrated pump
The ADT773 features an internal automatic low-pressure pump providing a turnkey solution for low-pressure calibration tasks with high speed and stability.

External controls and compatibility
Supports control of up to 3 external valves via external drive ports. One channel is allocated for the Contamination Prevention System (CPS) to reduce contaminant ingress. Remaining channels can drive external vacuum pumps or isolation valves for added flexibility.

Contamination Prevention System (CPS)
Integrated solution enabling automatic fluid evacuation and purging between cycles to limit contamination of valves, lines and filters, improving durability and reliability of the calibration system.

Technical specifications

• Maximum pressure range (system capability): 400 inH2O (14.5 psi, 1 bar)
• Minimum pressure range: -380 inH2O (-13.5 psi, -0.95 bar) (based on 100 kPa atmosphere)
• Accuracy: 0.02 % full scale (FS)
• Control stability: < 0.003 % FS, typically 0.001 % FS
• Control response time: < 10 seconds (typical)
• Pressure type: low differential pressure
• Number of interchangeable pressure module bays: 2 (front bays)
• Maximum internal module control range: (-400 ~ 400) inH2O / (-1 ~ 1) bar
• Minimum internal module control range: (-1 ~ 1) inH2O / (-2.5 ~ 2.5) mbar
• Range switching mode: fixed or automatic
• Supply source: integrated air pump
• Control mode: fast, standard or custom
• Maximum overshoot: < 1 % PE
• Maximum load volume: 500 ml
• Fluid exhaust system (FES): optional
• Pressure port: 1/8 BSP F
• Port filters: optional (all ports can accept 40–100 μm filters)
• Power: AC 100 ~ 240 V, 50/60 Hz
• Fuse: T3.15 A 250 V AC
• Maximum power consumption: 150 W
• Chassis size: 440 (W) × 133 (H) × 380 (D) mm
• Rack mounting: 3U-19" horizontal
• Chassis weight: 17.6 kg
• ADT151 pressure module weight: 0.4 kg
• Operating ambient: 10 °C ~ 50 °C
• Storage temperature: -20 °C ~ 70 °C
• Operating humidity: 5 % RH ~ 95 % RH, non-condensing
• Operating altitude: < 2000 m
• Ingress protection: IP20 (indoor use only)
• Vibration level: 2 G
• Shock resistance: 4 G
• Warm-up time: 15 minutes
• Drop test height: 250 mm
• Compliance: CE, UKCA
• Communication: RS232, USB-A ×2, LAN (extensions via USB modules for WIFI, Bluetooth, GPIB, etc.)
• External valve drive ports: 3 channels, green terminal connector with latch, max capacity 24 V / 12 W, port withstand max. 30 V
• Alarm I/O port: 3-pole green terminal connector with latch, potential-free relay No/NC max 24 V/0.5 A (30 V max)
• Pressure switch test port: 1 channel, lockable green terminal connector, max load 24 V / 0.1 A (30 V max). Supports mechanical and electronic pressure switch testing
• Display: 7-inch capacitive touchscreen, 1280 × 800 resolution, selectable black/white background panels
• Communication update rate: 10 times per second
• Display refresh rate: 5 times per second
• Maximum displayed pressure value: +9 999 999 (digits adjustable)

ADT151 pressure module specifications (examples)

• ADT151-XX-DP400: Range (-400 ~ 400) inH2O, 1st range (-200 ~ 200) inH2O; Type: DP; Typical accuracy: 0.015 % FS; Uncertainty: 0.02 % FS
• ADT151-XX-DP300: Range (-300 ~ 300) inH2O, 1st range (-150 ~ 150) inH2O
• ADT151-XX-DP200: Range (-200 ~ 200) inH2O, 1st range (-100 ~ 100) inH2O
• ADT151-XX-DP150: Range (-150 ~ 150) inH2O, 1st range (-100 ~ 100) inH2O
• ADT151-XX-DP100: Range (-100 ~ 100) inH2O, 1st range (-50 ~ 50) inH2O
• ADT151-XX-DP50: Range (-50 ~ 50) inH2O, 1st range (-30 ~ 30) inH2O
• ADT151-XX-DP30: Range (-30 ~ 30) inH2O, 1st range (-20 ~ 20) inH2O
• ADT151-XX-DP20: Range (-20 ~ 20) inH2O, 1st range (-10 ~ 10) inH2O; recommended calibration interval: 180 days
• ADT151-XX-DP10: Range (-10 ~ 10) inH2O, 1st range (-5 ~ 5) inH2O
• ADT151-XX-DP5: Range (-5 ~ 5) inH2O, 1st range (-2 ~ 2) inH2O; Accuracy: 0.025 % FS; Uncertainty: 0.05 % FS
• ADT151-XX-DP2: Range (-2 ~ 2) inH2O, 1st range (-1 ~ 1) inH2O