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TH Köln Labor für Gebäudeautomation und Regelungstechnik 13

Height of the zero or centre position of the outlet manometer

Height of the pressure gauge at the outlet

Height of the zero or centre position of the inlet manometer

Height of the pressure gauge at the inlet

Ratio of shear stress to shear velocity acting in a fluid in relation to a plane shear motion

dynamic viscosity

this signal provides the kinematic viscosity

kinematicviscosity

measure for the friction forces of a fluid divided by the fluid density

kin viscosity

Volumic mass at a stated temperature

den

Average absolute atmospheric pressure measured at installation site

atmos press

Differential pressure at working conditions in the warranty point

design diff press

highest dynamic pressure that the seal has to resist

max_sealing_pressure

smallest flow rate at which the pump can operate without exceeding the noise and vibration limits specified in the order

Min perm stable flow rate

content of gas in the liquid to be pumped

gas cont

bus system which is physically distinct for different fields of application

field bus

ratio: volume of solid to volume of medium

sol vol fraction

actual total head of the pump

total head pump

Determined difference between the total head at the outlet side of the pump and the total head at the inlet side of the pump

total head of the pump

Difference: NPSH reference plane and reference plane

height (npsh datum plane)

minimum existing (NPSH) value in the inlet cross-section of the pump, which is determined by the system conditions for a fixed flow rate

npsh avail

Design flow rate in the inlet cross-section of the system divided by the inlet cross-section of the system

Average design speed in the plant inlet

Design flow rate in the outlet cross-section of the system divided by the outlet cross-section of the system

Average design speed at the plant outlet

The mechanical power absorbed by the pump shaft or coupling according to the design conditions.

Pump design power demand

temperatur range in which a piece of equipment can be used without a serious change in certain guaranteed properties

temperature range (max)

largest value of the pump efficiency related to given operating conditions

best eff (pump)

Lower limit value of the temperature application range of a piece of equipment. The temperature application range of equipment describes the temperature range in which it can be used without serious changes to certain guaranteed properties.

temperature range (min)

time quantity of use

Service life

an Anglo-American unit in mechanics for the rotational speed, for example of a rotary axis

RPM

indicates the number of revolutions in a time period related to this time period

speed

Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or with the notation min ) is the number of turns in one minute. It is a unit of rotational speed or the frequency of rotation around a fixed axis.

rotation frequency

actual rounds per minute to an axis

rounds per minute

Speed corresponding to the rated data of the motor used.

Rated speed

indicates how many revolutions a rotary movement has

orbital freuquency

indicates how many revolutions a rotary movement has

revolutions per minute

indicates how many revolutions a rotary movement has

rotations per minute

Time period, starting from the first use and ending with the time when the limit state is reached.

Service life

Period of time from the commissioning of a plant, part of a plant, a component or a line system

service life

the time after commissioning

operation time

Length of time that maintenance is performed on an object, including technical, logistical, and internal administrative delays

time for maintenance

time required for maintenance

maintenance duration

Part of the maintenance time during which active maintenance is carried out on an object

time for active maintenace

Period of time in which an object is stationary

downtime

During this time, the object is in standstill mode

standstill time

accumulated span of uptime from the object's initial startup or from recovery to failure

uptime to failure

Range of uptime from initial start-up to failure

operation time to failure

Total uptime of an object between two consecutive failures

operation time between failures

the time between two consecutive failures

Uptime between failures

Number of failures of an object in a given scan divided by the scan

average failure rate

the result of the division from the number of failures in a given period through the period

breakdown rate

Ability of an object, under given conditions and when required to be in a state, to perform a required function

avbl

capabilty to perform the function under certain circumstances when required

functionality

Percentage that the suitability of an object is in a state ready to perform when required

current Availability

Probability of an object's suitability when required to be in a working condition under given conditions at a given time and assuming the necessary external resources are provided

immediate availability

proportion of actual production to required production

production availability

ratio of actual production to planned production in a given period

availabilty related to production

time-related proportion within a given period during which an object was able to perform when required

Time-related availability

Percentage in a period where the object has fulfilled the function

availability in relation to time

reliability that is expected under normal operating and maintenance conditions

anticipated reliability

Reliability of an object, which is determined by design planning and manufacture under expected operating and maintenance conditions

Reliability that's expected

actual reliability of an object, taking into account the modes of operation, operating conditions and any preventive maintenance measures carried out

reliability of operation

describes the reliability of an object in relation to operation and maintenance measures

operational reliability

Ability of an object to fulfill a required function under given conditions of use and maintenance until the end of its service life

durability

the durability describes how well the object fulfills the required function up to the end of its useful life

long-lastingness

Part of the maintenance time during which active corrective maintenance is performed on an object, including technical, logistical and internal administrative delays

corrective service time

the active corrective maintenance time on an object including technical, logistical and internal administrative delays

time for corrective maintennace

number of breakdowns of an object

number of breakdowns

number of component breakdowns

breakdown number

potential or actual harmful consequences of a failure or error

severity of an outage

Amount of loss, harm or damage caused by error or failure

severity of failure

This attribute indicates the date of installation or commissioning of the device.

inst date

This attribute identifies the date when the device was last inspected.

date of last inspection

This attribute identifies the date when the device is scheduled for the next inspection.

date of next inspection

This attribute identifies the date when the device was last serviced.

date of last service

This attribute identifies the date when the device is scheduled for the next servicing.

date of next service

pump power requirement at the point of best efficiency

optimum power input of pump

number of rotations or movements made in a given time (measurement)

speed

Measured pressure in the outlet cross section of the system

Plant outlet pressure

Measured pressure in the inlet cross section of the system

System inlet pressure

Determined (actual) gain in total pressure between the pump inlet and pump outlet

pressure difference

Measured internal temperature of component fluid

fluid temp

Temperation of the pump-bearing

temp_bearing

temperature measurement of the housing

Case temperature

temperature of the electronics (measurement)

temperature of the electronics

Mass flow rate of a fluid in a given unit of time through an equipment

Mass flow rate

total head at the outlet of the plant

plant outlet total head

this signal provides the total head at the inlet of the installation

installationinlethead

total head at the inlet of the plant

plant inlet total head

difference between installation outlet and inlet head

installationtotalhead

Measured mechanical power transferred to the fluid as it passes through the pump

Pump delivery rate

Measured mechanical power transferred to the fluid by passing the pump

pump output power

Measured density of the fluid

d

actual humidity that is measured in the surrounding of the pump

amb_hum

summed up number of starts

Quantity starts

accumulated number of starts

count of starts

declaration of confirmity (publicy aaccessible)

Declaration of compliance

the actual sound energy level

soundenergylevel

ten times the logarithm to the base 10 of the ratio of the sound energy J to a reference value J0 expressed in decibels

acoustic energy level

Sound Energy Level is the logarithmic ratio of the sound energy to the reference sound energy.

acoustic energy level

Ratio of the actual pump delivery flow to the displaced volume per unit of time

volumetrical efficency

determined ratio of the conveying capacity P_u to the power requirement P under certain working conditions

pump eff

determined shore of the delivery rate P_u to the power demand P under certain working conditions

pump efficiency

pump power output divided by the pump power input

efficiency of the pump

actual mechanical efficiency

mechanicalefficiency