DPT145 Multiparameter Transmitter for SF6 Gas

Measuring dew point, pressure and temperature - Vaisala Multiparameter Transmitter DPT145 for SF6 Gas
 

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    Overview
     

     Overview

     


    The Vaisala Multiparameter Transmitter DPT145 for SF6 Gas is a unique innovation that enables online measurement of dew point, pressure, and temperature. It also calculates four other values, including SF6 density. The DPT145 is especially well suited for integration into OEM systems.

    • First transmitter to offer online measurement of seven SF6 parameters in one unit
    • Measured parameters: dew point, pressure, temperature
    • Calculated parameters: SF6 density, normalized pressure, dew point in atmospheric pressure, ppm
    • Saves time and money across the board, from investment and installation to operation and servicing
    • More reliable assessment of the condition of SF6 insulation due to online measurement
    • Long calibration interval of years
    Technical Specifications
     

     Technical Specifications

     

    Measured Parameters


    Dew point
    Pressure, absolute
    Temperature
    -50 ... +30 °C (-58 ... +86 °F)
    1 ... 10 bar (14.5 ... 145 psi)
    -40 ... +80 °C (-40 ... +176 °F)


    Calculated Parameters



    Pressure, normalized to 20 °C
    (68 °F)
    1 ... 12 bar (14.5…174 psi)

    SF6 or SF6/N2 mixture density
    ppm moisture, by volume
    Dewpoint, converted to atmospheric pressure

    0...100 kg/m3
    40 ... 40 000 ppm
    -65 … +30 °C (-85 ... +86 °F)

    Performance



    Dew point accuracy
    Dewpoint stability

    Pressure accuracy at 23 °C (73.4 °F)
    Pressure temperature dependence
    ±3 °C (±5.4 °F)
    typical drift < 2 °C (3.6 °F) /5 years
    ±0.4 %FS
    ±0.1 %FS/10 °C (18 °F)

    Pressure stability
    Temperature accuracy
        0 ... 40 °C (+32 ... +104 °F)
        -40...80 °C (-40 ... +176 °F)
    typical drift < 1 %FS /5 years

    ±0.5 °C (± 0.9 °F)
    ±1 °C (± 1.8 °F)

    Density accuracy (pure SF6, 1 ... 10 bara)
        0 ... 40 °C (+32 ... +104 °F)

    ±1 %FS

        -40 ... +60 °C (-40 ... +140 °F)
    PPM accuracy, typical (5...1000 ppm, 7 bar)
    ±2.2 %FS
    ±( 7 ppm + 15% of reading)

    Sensor response time:
        Pressure response time
        Dew point response time*
        63% [90%] at 20°C and 1 bar
       -50 -> -10 °C Tdf
       -10 -> -50 °C Tdf     

    < 1 s


    5 s [ 10 s]
    10 s [ 2.5 min]
    ​* system equilibrium related response time is typically longer

    Operating Environment


    Operating temperature of electronics
    Operating Pressure
    Relative humidity
    Measured gases

    -40 … +60 °C (-40 ... +140 °F)
    0 … 50 bar (0…725 psi)
    0...100 %
    SF6, SF6/N2 mixture

    Outputs


    Digital output

    Connector

    RS-485, non-isolated, Vaisala protocol
    4-pin M8

    General

    ​Sensor

    Operating voltage
    ​Vaisala MPS1 multiparameter sensor
    15 ... 28 VDC
    ​ ​    20 ... 28 VDC in cold temperatures (-40 ... -20 °C (-40 ... -4 °F))
    ​Supply current, during normal measurement
         during self-diagnostics
    Housing material
    Housing classification
    ​20 mA
    max. 300 mA pulsed
    AISI316L
    IP65 (NEMA4)
    ​ ​     Weather shield to be used for continuous outdoor installations
    ​Storage temperature range
        transmitter only
        shipment package
    Mechanical connection

    -40 … +80 °C (-40 ... +176 °F)
    -20 … +80 °C (-4 ... +176 °F)
    DILO DN20, ABB Malmkvist, or
    Alstom G1/2” compatible connector
    ​ ​      Every connection is helium leak tested at the factory
    ​Dimensional drawings

    Weight (with DILO adapter)
    ​See the document B211165EN-A
    765 g (27.0 oz)
    ​ ​Complies with EMC standard EN61326-1, Electrical equipment for
    measurement, control and laboratory use - EMC requirements;
    ​     Industrial environment, Tested levels
         EN/IEC 61000-4-2, Electrostatic Discharge
         EN/IEC 61000-4-3, RF field immunity
         EN/IEC 61000-4-4, Electric Fast Transient
         EN/IEC 61000-4-5, Surge



         EN/IEC 61000-4-6, Conducted RF Immunity

    Mechanical vibration
         EN/IEC 60068-2-6, Fc Sinusoidial vibration

    8kV con / 15kV air
    10V/m (80MHz-4.2GHz)
    ±2kV power and signal
    ±2kV power line to ground / ±1kV signal
    line to ground and power line to line
    10Vemf power line and digital output

    ± 6 g, 5-500 Hz sweep
    60 min/axis, 3-axis

    For complete specifications, please see the brochure or user guide in "Documents".
    Related Services
    • Service Center Calibration 
    • Regular calibration ensures that your Vaisala equipment continues to provide accurate, high-quality data. We offer traceable, standards-compliant calibration services for almost all Vaisala products and partner with world-class couriers for rapid, trouble-free return of your equipment.
    • Repair Services 
    • Vaisala repair services include fault tracing and repair or replacement of failed components, as well as final testing to ensure your equipment is functioning properly. Repairs can be carried out on site or at one of our service centers.
    • Spare Parts 
    • Get rapid access to the spare parts you need to maximize the uptime of your equipment and ensure reliable and accurate operation. In addition to standard spare part delivery, we also offer an express service where parts are shipped within one business day.
    • Warranty 
    • All Vaisala products and services are covered by a 12-month warranty as standard, with selected products covered for up to 24 months. During this period you benefit from free repair or replacement of faulty equipment. With Vaisala’s extended warranty, you get free repair or replacement for five years.
    Documents