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