# Class=577 (0x0241) - Class2 Level I Measurementzone CLASS2.LEVEL1.MEASUREMENTZONE ## Description This class mirrors the [CLASS1.MEASUREZONE](./class1.measurezone.md) class but use a different data format with a GUID stored in the first 16 bytes of the data followed by the standard data thus offset with 16-bytes. See [CLASS2.PROTOCOL1](./class2.protocol1.md) for more information on the data format. ## Type=0 (0x00) - General event {#type0} VSCP_TYPE_MEASUREMENT_GENERALGeneral Event. ---- ## Type=1 (0x01) - Count {#type1} VSCP_TYPE_MEASUREMENT_COUNTThis is a discrete value typical for a count. There is no unit for this measurement just a discrete value. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=2 (0x02) - Length/Distance {#type2} VSCP_TYPE_MEASUREMENT_LENGTH**Default unit:** Meter. This is a measurement of a length or a distance. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=3 (0x03) - Mass {#type3} VSCP_TYPE_MEASUREMENT_MASS**Default unit:** Kilogram. This is a measurement of a mass. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=4 (0x04) - Time {#type4} VSCP_TYPE_MEASUREMENT_TIMEA time measurement. **Default unit:** Seconds. **Opt. unit:** (1) Milliseconds. Absolute: (2) y-y-m-d-h-m-s (binary). String: (3) "HHMMSS". | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=5 (0x05) - Electric Current {#type5} VSCP_TYPE_MEASUREMENT_ELECTRIC_CURRENT**Default unit:** Ampere. This is a measurement of an electric current. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=6 (0x06) - Temperature {#type6} VSCP_TYPE_MEASUREMENT_TEMPERATURE**Default unit:** Kelvin. **Opt. unit:** Degree Celsius (1), Fahrenheit (2) This is a measurement of a temperature. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=7 (0x07) - Amount of substance {#type7} VSCP_TYPE_MEASUREMENT_AMOUNT_OF_SUBSTANCE**Default unit:** Mole. This is a measurement of an amount of a substance. | Data byte | Description | | --------- | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=8 (0x08) - Luminous Intensity (Intensity of light) {#type8} VSCP_TYPE_MEASUREMENT_INTENSITY_OF_LIGHT**Default unit:** Candela. This is a measurement of luminous intensity. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=9 (0x09) - Frequency {#type9} VSCP_TYPE_MEASUREMENT_FREQUENCY **Default unit:** Hertz. This is a measurement of regular events during a second. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=10 (0x0A) - Radioactivity and other random events {#type10} VSCP_TYPE_MEASUREMENT_RADIOACTIVITY**Default unit:** becquerel. **Optional unit:** curie (1) This is a measurement of rates of things, which happen randomly, or are unpredictable. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=11 (0x0B) - Force {#type11} VSCP_TYPE_MEASUREMENT_FORCE**Default unit:** newton. This is a measurement of force. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=12 (0x0C) - Pressure {#type12} VSCP_TYPE_MEASUREMENT_PRESSURE**Default unit:** pascal. **Opt. unit:** bar (1), psi (2) This is a measurement of pressure. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=13 (0x0D) - Energy {#type13} VSCP_TYPE_MEASUREMENT_ENERGY**Default unit:** Joule. **Optional unit:** KWh (1) This is a measurement of energy. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=14 (0x0E) - Power {#type14} VSCP_TYPE_MEASUREMENT_POWER**Default unit:** watt. **Optional unit:** Horse power (1). This is a measurement of power. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=15 (0x0F) - Electrical Charge {#type15} VSCP_TYPE_MEASUREMENT_ELECTRICAL_CHARGE**Default unit:** coulomb. This is a measurement electrical charge. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=16 (0x10) - Electrical Potential (Voltage) {#type16} VSCP_TYPE_MEASUREMENT_ELECTRICAL_POTENTIAL**Default unit:** volt. This is a measurement of electrical potential. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=17 (0x11) - Electrical Capacitance {#type17} VSCP_TYPE_MEASUREMENT_ELECTRICAL_CAPACITANCE**Default unit:** farad (F). This is a measurement of electric capacitance. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=18 (0x12) - Electrical Resistance {#type18} VSCP_TYPE_MEASUREMENT_ELECTRICAL_RESISTANCE**Default unit:** ohm (Ω). This is a measurement of resistance. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=19 (0x13) - Electrical Conductance {#type19} VSCP_TYPE_MEASUREMENT_ELECTRICAL_CONDUCTANCE**Default unit:** siemens. This is a measurement of electrical conductance. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=20 (0x14) - Magnetic Field Strength {#type20} VSCP_TYPE_MEASUREMENT_MAGNETIC_FIELD_STRENGTH**Default unit:** amperes per meter (H). **Optional units:** teslas (B) (1) This is a measurement of magnetic field strength. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=21 (0x15) - Magnetic Flux {#type21} VSCP_TYPE_MEASUREMENT_MAGNETIC_FLUX**Default unit:** weber (Wb). This is a measurement of magnetic flux. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=22 (0x16) - Magnetic Flux Density {#type22} VSCP_TYPE_MEASUREMENT_MAGNETIC_FLUX_DENSITY**Default unit:** tesla (B). This is a measurement of flux density or field strength for magnetic fields (also called the magnetic induction). | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=23 (0x17) - Inductance {#type23} VSCP_TYPE_MEASUREMENT_INDUCTANCE**Default unit:** henry (H). This is a measurement of inductance. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=24 (0x18) - Luminous Flux {#type24} VSCP_TYPE_MEASUREMENT_FLUX_OF_LIGHT**Default unit:** Lumen (lm= cd * sr) This is a measurement of luminous Flux. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=25 (0x19) - Illuminance {#type25} VSCP_TYPE_MEASUREMENT_ILLUMINANCE**Default unit:** lux (lx) ( lx = lm / m² ) This is used to express both Illuminance (incidence of light) and Luminous Emittance (emission of light). | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=26 (0x1A) - Radiation dose {#type26} VSCP_TYPE_MEASUREMENT_RADIATION_DOSE**Default unit:** gray (Gy). **Opt unit:** sievert (Sv) (1). This is a measurement of a radiation dose (Absorbed dose of ionizing radiation). | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=27 (0x1B) - Catalytic activity {#type27} VSCP_TYPE_MEASUREMENT_CATALYTIC_ACITIVITY**Default unit:** katal (z). This is a measurement of catalytic activity used in biochemistry. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=28 (0x1C) - Volume {#type28} VSCP_TYPE_MEASUREMENT_VOLUME**Default unit:** cubic meter (m³) **Opt. unit:** Liter (dm³) (1), decilitre (100 cm³) (2), centilitre (10 cm³) (3), millilitre (cm³) (4) where unit 4 is only available for Level II measurement events where units can hold this value. This is a measurement of volume. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=29 (0x1D) - Sound intensity {#type29} VSCP_TYPE_MEASUREMENT_SOUND_INTENSITY**Default unit:** W/m2, watt per square meter. This is a measurement of sound intensity (acoustic intensity). | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=30 (0x1E) - Angle {#type30} VSCP_TYPE_MEASUREMENT_ANGLE* **Default unit:** radian (rad) (Plane angles). * **Opt Unit:** degree (1). * **Opt Unit:** arcminute (2). * **Opt Unit:** arcseconds (3). This is a measurement of an angle. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=31 (0x1F) - Position WGS 84 {#type31} VSCP_TYPE_MEASUREMENT_POSITION**Default unit:** Longitude. **Opt. unit:** Latitude. This is a measurement of a position as of WGS 84. Normally given as a floating point value. See [./class1.gps.md](CLASS1.GPS) for a better candidate to use for position data. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=32 (0x20) - Speed {#type32} VSCP_TYPE_MEASUREMENT_SPEED**Default unit:** Meters per second. **Optional unit:** Kilometers per hour (1) Miles per hour (2) This is a measurement of a speed. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=33 (0x21) - Acceleration {#type33} VSCP_TYPE_MEASUREMENT_ACCELERATION**Default unit:** Meters per second/second (m/s2). This is a measurement of acceleration. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=34 (0x22) - Tension {#type34} VSCP_TYPE_MEASUREMENT_TENSION**Default unit:** N/m. This is a measurement of tension. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=35 (0x23) - Damp/moist (Hygrometer reading) {#type35} VSCP_TYPE_MEASUREMENT_HUMIDITY**Default unit:** Relative percentage 0-100%. This is a measurement of relative moistness (Humidity). | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=36 (0x24) - Flow {#type36} VSCP_TYPE_MEASUREMENT_FLOW**Default unit:** Cubic meters/second. **Opt Unit:** Liters/Second. This is a measurement of flow. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=37 (0x25) - Thermal resistance {#type37} VSCP_TYPE_MEASUREMENT_THERMAL_RESISTANCE**Default unit:** Thermal ohm K/W. This is a measurement of thermal resistance. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=38 (0x26) - Refractive (optical) power {#type38} VSCP_TYPE_MEASUREMENT_REFRACTIVE_POWER**Default unit:** dioptre (dpt) m-1. This is a measurement of refractive (optical) power. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=39 (0x27) - Dynamic viscosity {#type39} VSCP_TYPE_MEASUREMENT_DYNAMIC_VISCOSITY**Default unit:** poiseuille (Pl) This is a measurement of dynamic viscosity. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=40 (0x28) - Sound impedance {#type40} VSCP_TYPE_MEASUREMENT_SOUND_IMPEDANCE**Default unit:** rayl (Pa·s/m) This is a measurement of sound impedance. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=41 (0x29) - Sound resistance {#type41} VSCP_TYPE_MEASUREMENT_SOUND_RESISTANCE**Default unit:** Acoustic ohm Pa · s/ m³. This is a measurement of sound resistance. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=42 (0x2A) - Electric elastance {#type42} VSCP_TYPE_MEASUREMENT_ELECTRIC_ELASTANCE**Default unit:** daraf (f-1). This is a measurement of electric elasticity. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=43 (0x2B) - Luminous energy {#type43} VSCP_TYPE_MEASUREMENT_LUMINOUS_ENERGY**Default unit:** talbot ( tb = lm * s) This is a measurement of luminous energy. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=44 (0x2C) - Luminance {#type44} VSCP_TYPE_MEASUREMENT_LUMINANCE**Default unit:** cd / m²) (non SI unit = nit) This is a measurement of luminance. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=45 (0x2D) - Chemical concentration {#type45} VSCP_TYPE_MEASUREMENT_CHEMICAL_CONCENTRATION**Default unit:** molal (mol/kg). This is a measurement of chemical concentration. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=46 (0x2E) - Reserved {#type46} VSCP_TYPE_MEASUREMENT_RESERVED46Reserved (previously was doublet of Type= 26, don't use any longer!) ---- ## Type=47 (0x2F) - Dose equivalent {#type47} VSCP_TYPE_MEASUREMENT_DOSE_EQVIVALENT**Default unit:** sievert (J/Kg). This is a measurement of dose equivalent. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=48 (0x30) - Reserved {#type48} VSCP_TYPE_MEASUREMENT_RESERVED48Reserved (was doublet of Type= 24, do not use any longer!) ---- ## Type=49 (0x31) - Dew Point {#type49} VSCP_TYPE_MEASUREMENT_DEWPOINT**Default unit:** Kelvin. **Opt. unit:** Degree Celsius (1), Fahrenheit (2) This is a measurement of the Dew Point. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=50 (0x32) - Relative Level {#type50} VSCP_TYPE_MEASUREMENT_RELATIVE_LEVEL**Default unit:** Relative value. This is a relative value for a level measurement without a unit. It is just relative to the min/max value for the selected data representation, typically percentage or per mille or similar. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=51 (0x33) - Altitude {#type51} VSCP_TYPE_MEASUREMENT_ALTITUDE**Default unit:** Meter. **Opt. unit:** Feet(1), inches (2) Altitude in meters. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=52 (0x34) - Area {#type52} VSCP_TYPE_MEASUREMENT_AREA**Default unit:** square meter (m²) Area in square meter. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=53 (0x35) - Radiant intensity {#type53} VSCP_TYPE_MEASUREMENT_RADIANT_INTENSITY**Default unit:** watt per steradian ( W / sr ) Radiated power per room angle. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=54 (0x36) - Radiance {#type54} VSCP_TYPE_MEASUREMENT_RADIANCE**Default unit:** watt per steradian per square metre ( W / (sr * m²) ) This is the radiant flux emitted, reflected, transmitted or received by a surface. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=55 (0x37) - Irradiance, Exitance, Radiosity {#type55} VSCP_TYPE_MEASUREMENT_IRRADIANCE**Default unit:** watt per square metre ( W / m² ) Power emitted from or striking onto a surface or area. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=56 (0x38) - Spectral radiance {#type56} VSCP_TYPE_MEASUREMENT_SPECTRAL_RADIANCE**Default unit:** watt per steradian per square metre per nm (W·sr-1·m-2·nm-1) **Opt. unit:** watt per steradian per meter3 (W·sr-1·m-3) (1), watt per steradian per square metre per hertz (W·sr-1·m-3) (2) Radiance of a surface per unit frequency or wavelength. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=57 (0x39) - Spectral irradiance {#type57} VSCP_TYPE_MEASUREMENT_SPECTRAL_IRRADIANCE**Default unit:** watt per square metre per nm (W·m-2·nm-1) **Opt. unit:** watt per metre3 (W·m-3) (1), watt per square metre per hertz (W·m-2·Hz-1) (2) Irradiance of a surface per unit frequency or wavelength. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=58 (0x3A) - Sound pressure (acoustic pressure) {#type58} VSCP_TYPE_MEASUREMENT_SOUND_PRESSURE**Default unit:** pascal (Pa) This is a measurement of sound pressure (acoustic pressure). | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=59 (0x3B) - Sound energy density {#type59} VSCP_TYPE_MEASUREMENT_SOUND_DENSITY**Default unit:** pascal (Pa) Sound energy density or sound density is the sound energy per unit volume. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- ## Type=60 (0x3C) - Sound level {#type60} VSCP_TYPE_MEASUREMENT_SOUND_LEVEL**Default unit:** decibel (dB) Sound level expressed in decibel. This event is supplied for convenience. | Data byte | Description | | :---------: | ----------- | | 0 | Data coding. | | 1-7 | Data with format defined by byte 0. | ---- {% include "./bottom_copyright.md" %}