CẢM BIẾN ÁP SUẤT WIKA IS-3

Applications
* Chemical, petrochemical industry
* Oil, natural gas
* Machine building
Special features
Measuring ranges: from 0 ... 0.1 to 0 ... 6,000 bar [0 ... 3 to 0 ... 15,000 psi]
Approved: for use in hazardous areas, e.g. ATEX, IECEx, FM and CSA

Overload safety:
      The overload safety is based on the sensor element used. Depending on the selected process connection and sealing, restrictions in overload safety can result.
      A higher overload safety will result in a higher temperature error.
      Measuring ranges ≤ 25 bar [≤ 400 psi]: 3-fold
      Measuring ranges 40 ... 600 bar [500 ... 8,000 psi]: 2-fold 1)
      Measuring ranges ≥ 1,000 bar [≥ 10,000 psi]: 1.15-fold

Output signal

Analogue signal: 4 ... 20 mA

Permissible load in Ω

Model IS-3: ≤ (supply voltage - 10 V) / 0.02 A - (cable length in m x 0.14 Ω)

Model IS-3 with field case:

      ≤ (supply voltage - 11 V) / 0.02 A

      For the test circuit signal of the IS-3 model with field case a load of ≤ 15 Ω applies

Voltage supply

Supply voltage U+:

      Model IS-3: DC 10 ... 30 V

      Model IS-3 with field case: DC 11 ... 30 V

Supply and signal circuit for ATEX/IECEx ignition protection type Ex i (see product label):

      Voltage: Ui = DC 30 V

      Current: Ii = 100 mA

Reference conditions (per IEC 61298-1)

Temperature: 15 ... 25 °C [59 ... 77 °F]

Atmospheric pressure: 860 … 1,060 mbar [86 … 106 kPa/12.5 … 15.4 psig]

Air humidity: 45 ... 75 % r. h. (non-condensing)

Mounting position: Calibrated in vertical mounting position with process connection facing downwards.

Supply voltage: DC 24 V

Time response

Settling time:

      ≤ 2 ms

      ≤ 10 ms for medium temperatures below -30 °C [-22 °F]

Accuracy specifications

Accuracy:

      Standard ≤ ±0.5 % of span

      Option ≤ ±0.25 % of span 1)

      Including non-linearity, hysteresis, zero offset and end value deviation (corresponds to measured error per IEC 61298-2).

Non-linearity (IEC 61298-2): ≤ ±0.2 % of span BFSL

Non-repeatability: < 0.1 % of span

Mean temperature coefficient of zero point:

      [0 ... 80 °C / 32 ... 176 °F]

      Measuring range ≤ 0.25 bar: ≤ ±0.4 % of span/10 K

      Measuring range > 0.25 bar: ≤ ±0.2 % of span/10 K

Mean temperature coefficient of span:

      [0 ... 80 °C / 32 ... 176 °F]

      ≤ ±0.2 % of span/10 K

Long-term stability at reference conditions: ≤ ±0.2 % of span/year

Adjustability of zero point and span:

      Adjustment is made using potentiometers inside the instrument.

      Zero point: ±5 %

      Span: ±5 %

      For use in hydrogen applications, observe the Technical information IN 00.40 at www.wika.com regarding long-term stability

Electrical connections: Available connections see “Dimensions in mm”

Operating conditions

Ingress protection (per IEC 60529): The ingress protection depends on the respective electrical connection. The stated ingress protection only applies when plugged in using mating connectors that have the appropriate ingress protection.

IP65: Angular connector DIN EN 175301-803 A

IP67: 

      Circular connector M12 x 1 IEC 61076-2-101 A-COD

      Circular connector M16 x 0.75 IEC 61076-2-106

      Cable outlet IP67

      Cable outlet IP67 with protective cap (precondition: Avoidance of water accumulation in the protective cap)

      Bayonet connector MIL-DTL-26482

IP68:

      Cable outlet IP68 cable gland (72 h / 300 mbar)

      Cable outlet IP68 (permanent use in the medium, max. pressure 2 bar)

IP69K: Field case