CẢM BIẾN ÁP SUẤT WIKA HP-2

Applications
* Test bench construction
* Water-jet cutting
* High-pressure pasteurisation
* High-pressure cleaning
Special features
* High number of load cycles through patented design
* Exchangeable process connection in case of hairline cracks
* Suitable for highly dynamic pressure due to diaphragm protection system
* Reduced recalibration costs thanks to excellent long-term stability

Specifications

Overview of versions

Model HP-2-S: Standard version

Model HP-2-D:

      Additionally with DIPS (diaphragm impact protection system)

      DIPS protects the pressure sensor from cavitation and micro-diesel effects; it is  articularly recommended for use with water as a medium.

Model HP-2-E:

      Additionally with EPC (exchangeable pressure connection)

      EPC enables the changing of the process connection without having to change the entire pressure sensor.

      This system is particularly recommended when hairline cracks can occur.

Accuracy specifications

Accuracy: → See “Max. measured error per IEC 61298-2”

Max. measured error per IEC 61298-2

Measuring ranges < 10,000 bar [145,000 psi]:

      ≤ ±0.5 % of span

      ≤ ±0.25 % of span

Measuring range 10,000 bar [145,000 psi]:

      ≤ ±0.5 % of span

      ≤ ±0.25 % of span, typical

Measuring ranges 12,000 bar and 15,000 bar [217,500 psi]

      ≤ ±0.5 % of span, typical

Adjustability of current and voltage output:

      Zero point: ±5 % of span

      Adjustment is made using potentiometers inside the instrument

Adjustability of USB output:

      Zero point: -5 ... +20 % of span

      Span: -50 ... +5 % of span

      djustment is made via “EasyCom 2011” software

Temperature error: at 0 ... 80 °C [32 ... 176 °F]

Typical:

      ≤ ±1 % of span

      ≤ ±2 % of span for special measuring ranges

Maximum: ≤ ±2.5 % of span

Long-term stability per DIN 16086:

      ≤ 0.1 % of span/year

      0.2 % of span/year for special measuring ranges

Reference conditions: Per IEC 61298-1

Signal type

Analogue

Current (2-wire): 4 ... 20 mA

Voltage (3-wire):

      DC 0 ... 5 V

      DC 0 ... 10 V

Digital: USB 2.0

Load in Ω:

      Current (2-wire) ≤ (supply voltage - 10 V)/0.02 A

      Voltage (3-wire) > max. output signal/1 mA

Voltage supply

Supply voltage:

      Output signal: 4 ... 20 mA DC 10 ... 30 V

      Output signal: DC 0 ... 5 V DC 10 ... 30 V

      Output signal: DC 0 ... 10 V DC 14 ... 30 V

      Output signal: USB 2.0 DC 5 V

Current supply:

      Current (2-wire): Signal current, max. 35 mA

      Voltage (3-wire): 8 mA

      USB 2.0: 40 mA

Overvoltage resistance:

      DC 36 V

      DC 5.25 V with USB output

Dynamic behaviour

Settling time per IEC 61298-2:

      Current and voltage output < 1 ms

      USB output < 10 ms

      Warm-up time < 10 min

Operating conditions

Medium temperature limit: 0 ... +80 °C [32 ... 176 °F]

Ambient temperature limit: -20 ... +80 °C [-4 ... +176 °F]

Storage temperature limit: -40 ... +85 °C [-40 ... +185 °F]

Vibration resistance per IEC 60068-2-6: 0.35 mm (10 ... 55 Hz)

Shock resistance per IEC 60068-2-27: 100 g (2.4 ms)

Ingress protection (IP code) per IEC 60529: → See “Electrical connection”

Service life: On request, since the service life depends on the actual pressure profile.

Options for specific media

Hydrogen

Measuring ranges: 2,500, 4,000, 5,000 and 10,000 bar.

Long-term drift: On request

Material:

      Process connection: MP35N

      Sensor:  2.4711 Elgiloy

Packaging: Individual packaging

Instrument labelling:

      WIKA product label, lasered

      Customer-specific product label on request