Danfoss AKS 32, AKS 33 Data sheet

Data Sheet

Pressure transmitter Type AKS 32 and AKS 33

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 elds e.g.

• Air conditioning systems

• Refrigeration plant

• Process control

• Laboratories

AI309147088294en-000303

Pressure transmitter, Type AKS 32 and AKS 33

Features

Highly developed sensor technology means high pressure regulation accuracy, a very important factor in the precise and energy-economic capacity regulation of refrigeration plants.

• Fully digitally compensated, developed specially for refrigeration plants.

◦ LP: -30 – 40 °C (≤ 16 bar) ◦ HP: 0 – 80 °C (> 16 bar)

• Compatibility with all refrigerants incl. ammonia means less stock and greater application exibility

• Built-in voltage stabiliser, i.e. the AKS pressure transmitters can be powered from an unregulated voltage supply of any output within given limits

• Eective 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 inuences such as shock, vibration and pressure surge. AKS sensors can be mounted direct on to the plant application

• No adjustment necessary. With the highly developed sensor technology and sealed gauge principle, the accuracy of the 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 ATEX 2 explosive atmospheres

Accuracy (incl. non-linearity, hysteresis and repeatability)

± 0.3% FS (typ.) / ± 0.8% FS (max.)

Non-linearity BFSL (conformity)

< ± 0.2% FS

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

< 4 ms

Max. working pressure

See ordering table

Burst pressure

min. 300 bar

Power-up time

< 50 ms

Rated output signal

4 – 20 mA

Supply voltage [UB], polarity protected

9 – 32 V DC

Supply voltage dependency

< 0.1% FS / 10 V

Output limitation

22.4 mA

Max.Load, [RL]

RL≤

UB − 9V

0.02A

[Ω]

Rated output signal (short-circuit protected)

0 – 10 V DC

Supply voltage [UB], polarity protected

15 – 32 V DC

Supply current consumption

< 8 mA

Supply voltage dependency

< 0.05% FS / 10 V

Sink / source

< 1 mA

Load resistance, R

RL ≥ 15 kΩ

Rated output signal (short-circuit protected)

1 – 5 V DC

Supply voltage [UB], polarity protected

9 – 32 V DC

Supply current consumption

< 5 mA

Supply voltage dependency

< 0.05% FS / 10 V

Sink / source

< 1 mA

Load resistance, R

RL ≥ 10 kΩ

Operating temperature range Normal

-40 – 85 °C

ATEX Zone 2

-10 – 85 °C

Media temperature range [°C]

-40 – 85 °C

Compensated temperature range

LP: -30 – 40 °C / HP: 0 – 80 °C

Transport/storage temperature range

-50 – 85 °C

EMC – Emission

EN 61000-6-3

EMC – Immunity

Electrostatic discharge Air

8 kV

EN 61000-6-2

Contact

4 kV

EN 61000-6-2

eld

10 V/m, 26 MHz – 1 GHz

EN 61000-6-2

conducted

3 V

rms

, 150 kHz – 30 MHz

EN 61000-6-2

Transient burst

4 kV (CM)

EN 61000-6-2

surge

1 kV (CM,DM)

EN 61000-6-2

Insulation resistance

> 100 MΩ at 500 V DC

Vibration stability Sinusoidal

20 g, 25 Hz – 2 kHz

IEC 60068-2-6

Random

7.5 grms , 5 Hz – 1 kHz

IEC 60068-2-34, IEC 60068-2-36

Pressure transmitter, Type AKS 32 and AKS 33

Product specication

Technical data

Table 1: Performance

Table 2: Electrical specications AKS 33, 4 – 20 mA output signal

Table 3: Electrical specications for AKS 32, 0 – 10 V DC output signal

Table 4: Electrical specications for AKS 32, 1 – 5 V DC output signal

Table 5: Environmental conditions

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