Product

Accutech DP20 Wireless Differential Pressure

 The Accutech DP20 differential pressure field unit provides differential pressure data in a variety of ranges up to +/-300in H20. Both traditional (side-mount) and low profile (bottom mount) connections are available to enhance installation options. The DP20 may be operated in any one of four modes: Differential Pressure, Orifice Flow, Open Channel Flow and Level, and may be configured with a 22-point custom curve capability.

 The DP20 is suited for level applications, especially in pressurised tanks (e.g. propane & butane). The product also has a square root function for use with orifice plates, v-cones, and pitot tubes, providing volumetric flow measurement in general industrial processes. Accutech field units automatically report field data to a centralised Accutech base radio over distances of up to 3000ft (~1000m). Each field unit is self-contained, featuring an integrated 900MHz or 2.4GHz (license-free band),frequency hopping, spread-spectrum transceiver and antenna, and long-lasting battery that offers 3+ years of maintenance-free service (up to 10 years depending on data rates and battery options). Accutech networks are highly scalable with the possibility of 100 field units per base radio and 256 base radios per installation. Accutech field units are housed within a compact and weather-resistant NEMA4 enclosure with options for a remote sensor and remote antenna on select models. Field units are available in a wide range of certifications and come with a 3-Year warranty (parts and labor).
 

Accutech DP20 Wireless Differential Pressure

• Sensor Type Differential Pressure
• Location Field Unit
• Frequency Range 900MHz and 2.4GHz license-free bands
• Power Integrated battery
• Network Capacity - Max. 100 field units per base radio
                             - Max. 256 base radios per network
• Operational Modes • Differential Pressure, Orifice Flow, Open Channel Flow, Level
• Accuracy ± 0.2% of sensor URL including combined effects of linearity, hysteresis, repeatability and temperature (applies to standard unit without isolating seals).
• Addition of seals will reduce accuracy due to thermal effects of fill fluid. Special ranges and accuracy may be available on request.
• Field Spanning Zero offset (to correct for positioning changes) and two-point (zero and span) calibration
• Stability Combined zero and span stability: less than ± 0.1% of sensor URL per year at 21°C (70°F)
• Maximum Static Pressure 3000psi
• Differential Pressure Ranges +/- 100in H2O, +/- 300in H2O, +/- 25psi, -25 to +100psi, -25 to +300psi
• RF Characteristics 2.4GHz:
 : 2400 to 2483.5MHz ISM license-free band Frequency Hopping Spread Spectrum (FHSS) Radio
 : Data Rates: 50/100kbps (FSK Modulation), 200kbps (GFSK Modulation)
 : Typical Electrical Transmit Power: +10.6dBm
 : Typical Receive Sensitivity (0.1% BER): - 102dBm @ 50kbps, - 99dBm @ 100kbps, - 99dBm @ 200kbps
 : Typical CW Receiver Blocking Rejection: 64dB for CW @ +/- 5MHz, 74dB for CW @ +/- 30MHz
• Contains software and hardware that continuously monitors operation. Any sensor or device parameter that is out of spec is identified and reported
• Operating Ambient: -40° C to +104°C (-40° F to +220°F)
: Materials of Construction
: Base Plate: 304 Stainless Steel
: Cover: GE Lexan, V-0 rating and UV resistant
: Sensor Diaphragm: 316L Stainless Steel (Hastelloy C available upon special request)
: Flange: 316L Stainless Steel
: Bolts and Nuts: High Strength Alloy Steel
• Power - Self-contained power
: Standard Accutech field units include a single C-Cell (900MHz) or D-Cell (2.4GHz) lithium battery that offers battery life up to 10 years of service, depending on data rates and battery options.
: Sensor Filling Fluid • DC 200 silicone (Fluorolube available upon special request)
• Operating Shock and Vibration: Tested per IEC 60068-2-6 (vibration) and 2-27 (shock)
• Random Vibration Characteristics: Tested to withstand 6 g’s, 15 minutes per axis from 9 – 500Hz
• Electromagnetic Compatibility Operates within specification in fields from 80 to 1,000MHz with field strengths to 30V/m. Meets EN 50082-1 General Immunity
• Standard and EN 55011 compatibility emissions standard
 

Accutech DP20 Wireless Differential Pressure