Pressure Transmitter Types AKS 32 and AKS 33 Danfoss Pressure Sensors
Pressure transmitter types AKS 32 and AKS 33 Danfoss Pressure sensors product introduction
AKS 32 and AKS 33 are pressure transmitters that measure a pressure and convert the measured value to a standard signal:
1 – 5 V DC or 0 – 10 V DC for AKS 32
4 – 20 mA for AKS 33
A robust design makes the AKS very suitable for application within a number of fields e.g.
Air conditioning systems
Refrigeration plant
Process control
Laboratories
Pressure transmitter types AKS 32 and AKS 33 Danfoss Pressure sensors Features
Highly developed sensor technology means high pressure regulation accuracy, a very important factor in the precise and energy-economic capacity regulation of refrigeration plant.
• Temperature compensation for LP and HP pressure transmitters, developed specially for refrigeration plant.
LP: -30 – 40 °C (≤ 16 bar)
HP: 0 – 80 °C (> 16 bar)
• Compatibility with all refrigerants incl. ammonia means less stock and greater application flexibility.
• Built-in voltage stabiliser, i.e. the AKS pressure transmitters can be powered from an unregulated voltage supply of any output within given limits.
• Effective protection against moisture means that the sensor can be mounted in very harsh environments, e.g. in the suction line encapsulated in an ice block.
• Robust construction gives protection against mechanical influences such as shock, vibration and pressure surge. AKS sensors can be mounted direct on to the plant.
• No adjustment necessary. With the highly developed sensor technology and sealed gauge principle, the accuracy ofthe factory setting is maintained independent of variations in ambient temperature and atmospheric pressure. This is very important when ensuring evaporating pressure control in air
conditioning and refrigeration applications.
• EMC protection according to EU EMC-directive (CE-marked)
• UL approved
• Polarity protected inputs.
• For use in zone 2 explosive atmospheres
Pressure transmitter types AKS 32 and AKS 33 Danfoss Pressure sensors Technical data
Performance
Accuracy (incl. non-linearity, hysteresis and repeatability) ± 0.3% FS (typ.) / ± 0.8% FS (max.)
Non-linearity BFSL (conformity)
Hysteresis and repeatability ≤ ± 0.1% FS
Thermal zero point shift
≤ ± 0.1% FS / 10K (typ.)
≤ ± 0.2% FS / 10K (max.)
Thermal sensitivity (span) shift
≤ ± 0.1% FS / 10K (typ.)
≤ ± 0.2% FS / 10K (max.)
Response time
Max. working pressure See ordering table
Burst pressure min. 300 bar
Electrical specifications AKS 33, 4 – 20 mA output signal
Rated output signal 4 – 20 mA
Supply voltage [U B ], polarity protected 10 – 30 V DC
Supply voltage dependency
Current limitation (linear output signal up to 1.5 × rated range) 28 mA
Max.Load, [R L ] R L ≤ U
B - 10 V
0.02A [Ω]
Electrical specifications for AKS 32, 0 – 10 V DC output signal
Rated output signal (short-circuit protected) 0 – 10 V DC
Supply voltage [U B ], polarity protected 15 – 30 V DC
Supply current consumption
Supply voltage dependency
Output impedance
Load resistance, R L R L ≥ 15 kΩ
Electrical specifications for AKS 32, 1 – 5 V DC output signal
Rated output signal (short-circuit protected) 1 – 5 V DC
Supply voltage [U B ], polarity protected 9 – 30 V DC
Supply current consumption
Supply voltage dependency
Output impedance
Load resistance, R L R L ≥ 10 kΩ
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