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

Adjustment 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