Wika Pressure transmitter, Models D-20-9, D-21-9
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Pressure Transmitter with CANopen Interface - D-20-9, D-21-9

Brand: WIKA Instruments Ltd.

Wika Pressure transmitter, Models D-20-9, D-21-9
The model D-20-9 and model D-21-9 pressure sensors are the ideal solution in the field of industrial pressure measurement when a high-performance yet cost-effective solution with a CANopen interface is needed.

These pressure sensors feature a high accuracy and flexibility with their alignment to the widest variety of measuring tasks.
Features
  • CANopen interface per DS-301. 
  • CANopen. 
  • interface per DS-301. 
  • Device profile DS-404. 
  • Pressure ranges: 0 ... 250 mbar up to 0 ... 1,000 bar. 
  • Compact size. 
  • Design with integrated Y-connector. 

Specifications

Brand

Measuring Ranges [bar]

  • 0.25 ... 25
  • 0.4 ... 40
  • 0.6 ... 60
  • 1 ... 100
  • 1.6 ... 160
  • 2.5 ...250
  • 4 ... 400
  • 6 ... 600
  • 10 ... 1000
  • 16 ... 1000

Overload Safety

  • Measuring ranges ≤ 1.6 bar: 5-fold
  • Measuring ranges 2.5 ... 16 bar: 4-fold (measuring range 10 bar: 3-fold)
  • Measuring range 1,000 bar: 1.5-fold
  • {Vacuum, overpressure, +/- and absolute pressure are available}
  • Measuring ranges 25 ... 600 bar: 2-fold

Material

  • Wetted parts
  • Model D-20-9: Stainless steel
  • Model D-21-9: Stainless steel (option: Hastelloy); O-ring: NBR (option: FPM/FKM or EPDM)
  • Case: Stainless steel

Internal Transmission Fluid

  • Synthetic oil
  • Halocarbon oil for oxygen versions (option)
  • Listed by FDA for food industry (option)
  • No transmission fluid for model D-20-9 with Measuriing Range > 25 bar

Power Supply U+

  • DC 10 ... 30 V

Output Signal

  • CANopen protocol in accordance with CiA DS-301 V. 4.02, device profile DS-404 V. 1.2

Power Consumption

  • < 0.7 W with galvanic isolation (option)
  • < 0.5 W

Communication Services

  • LSS (CiA DSP 305, version 1.1.1) services
  • Configuration of the instrument address and baud rate
  • Sync/Async, Node/Lifeguarding, Heartbeat
  • Individually programmable filter in order to suppress, for example, specific resonant frequencies

Response Time (10 ... 90 %)

  • 1.5 ms (baud rate ≥ 125 K)

Internal Measuring Rate

  • 1.000 Hz (adjustable up to approx. 4 Hz)

Insulation Voltage

  • DC 500 V

Accuracy

  • ≤ 1% of Span
  • ≤ 0.5% of Span (option)
  • ≤ 0.3% of Span (option, not possible in combination with DIP switch)
  • Including non-linearity, hysteresis, zero offset and end value deviation (corresponds to measured error per IEC 61298-2). Calibrated in vertical mounting position, process connection facing downwards.
  • In individual cases equipment exposed to strong electromagnetic fields with frequencies from 300 MHz to 700 MHz and 1 GHz to 2 GHz may show increased measuring errors of up to 3.2 %. to avoid such influences on the measuring signal do not operate the equipment in proximity to strong transmitting devices or radio installations, or use suitable sheath current filters.

Non-Linearity

  • ≤ 0.2% of Span (BFSL) per IEC 61298-2

Non-Repeatability

  • ≤ 0.1% of Span

Long-term Stability

  • ≤ 0.2% of Span / year (at reference conditions)

Permissible Temperature Ranges

  • Also meet EN 50178, tab. 7, operation (C) 4K4H, storage (D) 1K4, transport (E) 2K3
  • Medium: -30 ... +100° C
  • Medium: -40 ... +125° C (option)
  • Ambient: -20 ... +80° C
  • Storage:  -40 ... +100° C

Compensated Temperature Range

  • 0 to 80° C

Temperature Coefficients in the Compensated Temperature Range

  • Mean TC of zero: ≤ 0.2 of span / 10 K
  • Mean TC of span: ≤ 0.2 of span / 10 K

Documentation

Data Sheet

Operating Instructions

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