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5.3.11

VA - Pairs of values

Menu -> Settings -> Sensor -> VA Input -> Pairs of values

If pairs of values is selected (see 5.3.7.1), then the values stored here for determining the measured
value are applied as a calibration curve.

Selection:

Configuration

= enter the

quantity

of pairs of values (minimal 2, maximal 30) for

processing and display

Pairs of values

= display and change of pairs of values.

A pair of values always consists of a velocity value in m/s

and a frequency value in Hz.

The condition being: the pairs of values must be ever

increasing, i.e. the next velocity and frequency value must always

be greater than the previous one.

Example for quantity = 03

01:000.50m/s, 00010Hz

02:010.00m/s, 00350Hz

03:040.00m/s, 01770Hz

If the frequency measured value is greater than in the last pair of values, then the velocity value is

calculated. However, this means that the measurement uncertainty increases as this value is then outside
the calibrated range.

Settings for thermal sensors TA:

5.3.12

TA - Basic settings

Menu -> Settings -> Sensor -> TA Input ->

Basic settings

The connected

thermal sensor

determines the parameter type.

5.3.12.1

Type

Setting the type of thermal sensor:
Refer to the relevant technical documents for selection options.

Selection:

KKZ

= the

calibration number (KKZ)

is individually determined for each

sensor and modifies the basic characteristics.

KKZ:

enter as a 14-digit figure, in which each digit has a

0..9..A..F range (hexadecimal = 16 possible variables).

The actual KKZ can be found in the technical data sheet, calibration

certificate or directly on the sensor

pairs of values

= special calibration characteristic specifically matched to the

measuring task based on up to 30 supporting points. Entering or

amending the points, see under 5.3.15
The actual pairs of values can be found in the technical documents.

5.3.13

TA - Measurement settings

Menu -> Settings -> Sensor -> TA Input -> Measurement settings

The task to be carried out determines the parameter, section and profile factor to be set.

5.3.13.1

Section

Setting the measuring section for measuring in pipelines for flow rate display:

Selection:

Circular

= for pipes with circular section

di/mm

: enter the ID in mm

Rectangular

= for pipes with rectangular section

a/mm

: enter the inner surface a in mm

b/mm

: enter the inner surface b in mm

Содержание flowtherm NT

Страница 1: ...______________________________ U408_flowthermNT_B_e_160420 1 35 www hoentzsch com Operating Instructions flowtherm NT Software status from 2 01 Multifunctional handheld unit with data logger for measuring flow rate flow velocity temperature pressure and other variables ...

Страница 2: ... input 4 20 mA analog input 0 10 V Connector socket cap Close any connections not in use Measured value display Input channel 1 name unit value Input channel 2 name unit value Input channel 3 name unit value Function keys Designation Function keys with variable functions depending on operation menu USB connection type B for connecting to PC or adapter plug Switch off and reset Switch on Input chan...

Страница 3: ...FA Measurement settings 17 5 3 3 FA Density correction 18 5 3 4 FA Operating conditions 19 5 3 5 FA Standard conditions 19 5 3 6 FA Pairs of values 19 5 3 7 VA Basic settings 20 5 3 8 VA Measurement settings 20 5 3 9 VA Operating conditions 21 5 3 10 VA Standard conditions 21 5 3 11 VA Pairs of values 22 5 3 12 TA Basic settings 22 5 3 13 TA Measurement settings 22 5 3 14 TA Standard conditions 23...

Страница 4: ...o the mains earthed safety socket earthing Danger when installing the sensors in pressurized pipelines sensors for use in pressurized pipelines are to be inserted or retracted only in depressurized con ditions non observance may result in serious injuries to personnel when installing or removing under pressure the appropriate protective equipment must be used e g ball valve and probe guide pieces ...

Страница 5: ... plugs in hazardous atmospheres This also applies to connected sensors which must be mechanically screwed in place Use of the USB port in hazardous areas is not allowed without the protective USB cover Use of the USB port as a power supply is prohibited It is forbidden to change batteries in the hazardous environment Prior to measuring always check that the battery compartment is closed correctly ...

Страница 6: ...able optional various connection and extension cables connectors optional carrying case optional Please check that everything listed in the Delivery Note Technical Data Sheet is included in the delivery 2 1 Description type plate The flowtherm NT is a multifunctional handheld unit with data logger for measuring flow velocity volume flow flow rate standard flow rate mass flow rate temperature press...

Страница 7: ...ee Instruction Manual Category 3G Section 8 see Declaration of Conformity Section 9 4 Inputs see Description Section 2 1 see Connector sockets Section 4 1 see Wiring diagrams Section 4 2 and 4 3 5 Outputs see Electrical data Section 3 3 see Connector sockets Section 4 1 see Wiring diagrams Section 4 3 6 USB connection see Electrical data Section 3 3 see Connector sockets Section 4 1 7 Power supply...

Страница 8: ...LR6 Mignon AA 1 5V batteries maximum permissble nominal capacity 4000 mAh per cell running time Duracell Plus approx 24 hours using FA sensor without display light or via 4 NiMH rechargeable Mignon AA 1 2V batteries running time Ansmann Digital 2850 mAh approx 26 hours using FA sensor without display light Open the battery compartment with a screw driver Always change all 4 batteries at the same t...

Страница 9: ... value 0 02 FS Temperature display 1 Kelvin Analog input 0 10 V 1 0 3 of measured value 0 02 FS Analog input 4 20 mA 1 0 3 of measured value 0 02 FS Input Pt100 0 2 Kelvin Analog output 1 2 0 10 V 1 0 2 of measured value 0 02 FS All values apply for a set damping rate of 30 seconds during measurement In addition the measurement uncertainty of the utilised sensors must be taken into consideration 4...

Страница 10: ...ring diagram for the 8 pin connector plug Electrical connection must be carried out according to the relevant wiring diagram Incorrect connection can cause serious damage to the electronics Wiring diagram with view of solder contacts Pin assignment Pin 1 v FA FAR signal 1 F or v VA signal F Pin 2 ground G Pin 3 Pt100 Pin 4 Pt100 Pin 5 Pt100 Pin 6 Pt100 Pin 7 v FAR signal 2 F Pin 8 V Housing shield...

Страница 11: ...g diagrams with view of solder contacts 4 3 1 Analog outputs 0 10 V C analog output port 1 D analog output port 2 E signal 0 V plug shell shielding 4 3 2 Analog input 4 20 mA 2 wire system current for 12V supply A power supply 12V F power supply plug shell shielding 4 3 3 Analog input 4 20 mA 3 or 4 wire system current for 12V supply A power supply 12V B power supply 0V F signal H signal 0V plug s...

Страница 12: ...user level Arrow keys In measured value display view after switch on during measured value display the arrow keys have the following function and shift the display Definition whether the values from 1 2 or 3 input channels are displayed simultaneously Depending on selection the character size of the display value changes and is the display so set that only measured values from 1 or 2 input channel...

Страница 13: ...ed value display With switch off Parameter value selection window With new selection element the selected element flashes here mn With select and save and return to selection list With return to measured value display without saving With return to selection list without saving With switch off Parameter value digit numeric text setting With change digit the selected and editable digit flashes here ...

Страница 14: ...ture 5 3 5 1 Standard pressure 5 3 5 2 Standard density 5 3 5 3 Pairs of values 5 3 6 VA input Basic settings 5 3 7 Type 5 3 7 1 Measurement settings 5 3 8 Section 5 3 8 1 Profile factor 5 3 8 2 Damping 5 3 8 3 Operating conditions 5 3 9 Service temperature 5 3 9 1 Working pressure 5 3 9 2 Standard conditions 5 3 10 Standard temperature 5 3 10 1 Standard pressure 5 3 10 2 Standard density 5 3 10 3...

Страница 15: ...cimals 5 3 19 2 Display 5 3 20 Sensor 5 3 20 1 Rows 5 3 20 2 Row 1 5 3 20 3 Row 2 5 3 20 4 Row 3 5 3 20 5 Long term measurement 5 3 21 Mode 5 3 21 1 Device 5 3 22 Factory settings 5 3 23 Data logger 5 3 24 Switching on off 5 3 24 1 View 5 3 24 2 Settings 5 3 24 3 Delete 5 3 24 4 Status 5 3 25 Profiles 5 3 26 Switch off 5 3 28 LM Start 5 3 27 Logger Switching on off 5 3 24 1 View 5 3 24 2 Settings ...

Страница 16: ...based on up to 30 supporting points Input or changing the points see under 5 3 6 Distinctive feature of sensors with vane wheel types md3 and ms measuring tube These sensors are always supplied with a special calibration characteristic Therefore always select pairs of values For input or change see 5 3 6 pairs of values 5 3 1 2 Range Setting the vane wheel measuring range This can be determined fr...

Страница 17: ... mean flow velocity in the measuring section and the flow velocity measured from the sensor Requirements are centric sensor positioning non rotational inlet flow and adequately dimensioned input output sections See also Documents U117 and U205 Following profile factors are to be set for vane wheel cylinder probes ZS subject to pipe diameter Pipe ID in mm PF for ZS16 mc PF for ZS18 mc PF for ZS25 m...

Страница 18: ...s arises from a medium density of 1 204 kg m calibration conditions The only slightly deviating actual starting value even with considerably different working density of the medium in the actual application ensues in good approximation of the following actual starting value specified starting value x root of density during calibration working density of the medium The correction value is now the d...

Страница 19: ...3 4 1 Service temperature Measured or entered unit in C 5 3 4 2 Working pressure Measured or entered unit in hPa 5 3 5 FA Standard conditions Menu Settings Sensor FA input Standard conditions Standard conditions for Höntzsch are 21 C 70 F and 1014 hPa 14 7 psia Any standard can be set via the standard temperature and standard pressure parameters 5 3 5 1 Standard temperature Input value in C 5 3 5 ...

Страница 20: ... A F range hexadecimal 16 possible variables The actual KKZ can be found in the technical data sheet calibration certificate or directly on the sensor pairs of values special calibration characteristic specifically matched to the measuring task based on up to 30 supporting points Entering or amending the points see under 5 3 11 The actual pairs of values are documented in the technical documents 5...

Страница 21: ... as sensor in the display settings 5 3 20 1 Damping also affects the analog output if VA is selected as the source see 5 3 18 Damping s enter the damping time from 01 to 99 seconds Example 10 seconds after every second the arithmetical average from the last 10 seconds is displayed 5 3 9 VA Operating conditions Menu Settings Sensor VA Input Operating conditions When selecting the relevant units see...

Страница 22: ...al sensors TA 5 3 12 TA Basic settings Menu Settings Sensor TA Input Basic settings The connected thermal sensor determines the parameter type 5 3 12 1 Type Setting the type of thermal sensor Refer to the relevant technical documents for selection options Selection KKZ the calibration number KKZ is individually determined for each sensor and modifies the basic characteristics KKZ enter as a 14 dig...

Страница 23: ...ed before saving With rectangular selected as meas uring surface the surface is converted to circular for the proposed value and this value is approximate PF 1 000 must always be set for TADi measuring tubes calibrated with pairs of values 5 3 13 3 Pressure Working pressure in hPa as absolute pressure for zero correction 5 3 13 4 Damping The damping rate set here affects the measured value display...

Страница 24: ... pair of values then the velocity value is calculated However this means that the measurement uncertainty increases as this value is then outside the calibrated range Note For switching between different calibration gases each pair of values calibration for the respective calibration gas can be saved in its own profile see 5 3 26 Resetting the factory settings see 5 3 23 has no impact on the saved...

Страница 25: ...the selected port under 5 3 18 2 5 3 18 2 Source Setting the source and measuring value equivalency for the analog output port selected under 5 3 18 1 Selection FA VA TA flow sensor depending on selection under 5 3 20 1 equivalency initial value analog output at 0 V in m s final value analog output at 10 V in m s example 0 10 V 0 40 m s or 0 10 V 5 20 m s Pt100 temperature sensor Pt100 Equivalency...

Страница 26: ...2 Selection of which measured value is allocated to input channel 2 and displayed as Row 2 Selection see 5 3 20 3 5 3 20 5 Row 3 Selection of which measured value is allocated to input channel 3 and displayed as Row 3 Selection see 5 3 20 3 5 3 20 6 Units for FA and VA sensors Selection of unit for measured value display and data logger Selection m s flow velocity in meter second ft min flow veloc...

Страница 27: ...l min standard flow rate in liter minute calculated from flow velocity measuring section see 5 3 13 1 and standard conditions 5 3 14 N cfm standard flow rate in cubic feet minute calculated from flow velocity measuring section see 5 3 13 1 and standard conditions 5 3 14 kg h mass flow rate in kg hour calculated from flow velocity measuring section see 5 3 13 1 standard conditions 5 3 14 and the en...

Страница 28: ...t period in seconds e g S00010 continually and below this the number of measured values R00001 The bar above the control key description shows the progress of the measurement period in relation to the set interval Ater the 1st interval has elapsed the display is frozen and the next interval starts automatically displaying the average of the previous interval during the set length the measurement p...

Страница 29: ...man machine language German English French or Japanese Factory settings 5 3 23 Factory settings Menu Settings Factory settings The flowtherm NT is reset to factory settings all settings are lost if they have not been previously saved to a profile of their own see 5 3 26 The factory settings are preset as those found in the shipping documents The values of customer or application specific measuring...

Страница 30: ...isplay 5 3 24 3 Settings Designation freely adjustable measuring point designation with max 8 digits for all subsequently saved data logger values until entering a new measuring point designation 5 3 24 4 Delete Delete the contents of the data logger Before deleting a prompt appears Delete data logger Confirm with Cancel with or MESS All the values saved to the data logger are deleted accordingly ...

Страница 31: ...ed Available profile storage locations are marked with an after the profile name Profiles cannot be deleted but may be overwritten Returning to the factory settings 5 3 23 has no impact on the saved profiles Selection Load loading a saved profile by selecting from the list Save saving the active parameter settings to a profile by selecting from the list in an available profile storage field and in...

Страница 32: ... low Sensor type or KKZ set incor rectly Compare and correct settings according to details in the Technical Data Sheet Sensor contaminated Clean according to instructions Profile factor set too low Set profile factor to the corresponding value of nominal diameter and sensor type Input output section too short Change sensor position improve flow conditions with a flow rectifier straightener Rotatio...

Страница 33: ...reas in which category 1D 2D or 3D equipment is required 8 2 Safety Instructions Read the Instruction Manual carefully before initial operation Failure to do so may cause an explosion The flowtherm NT with Ex sensors for category 3G and 3D is to be used only in areas in which the ambient temperature range of the housing does not exceed 0 to 50 C See also details on the type plate of the flowtherm ...

Страница 34: ...rs FA vortex sensors VA and temperature probes Pt100 Ex nA IIC T6 X Explosion protection thermal sensors TA Ex nA IIC T4 X X Please note the precautions for hazardous areas see 1 3 8 4 Installation The current European Specifications for Assembly the recognised standards of good practice and this Instruction Manual apply 8 5 Maintenance Any maintenance and repair work is to be carried out solely b...

Страница 35: ...cuments Provisions of the Directive Reference no and date of issue 2014 34 EU Equipment and Protective Systems in potentially explosive atmospheres EN 60079 0 2012 EN 60079 15 2010 2014 30 EU Electromagnetic Compatibility EN 61000 6 4 2007 A1 2011 EN 61000 6 2 2006 Corrigendum 1 2011 2014 68 EU Pressure equipment 2011 65 EU Hazardous Substances in Electrical and Electronic Equipment Höntzsch GmbH ...

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