Table of Contents
Advertisement
Quick Links
_________________________________________________________________________________________________
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
U408_flowthermNT_B_e_160420
www.hoentzsch.com
1/35
Advertisement
Table of Contents
Related Manuals for Hontzsch flowtherm NT
Summary of Contents for Hontzsch flowtherm NT
- Page 1 _________________________________________________________________________________________________ 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 U408_flowthermNT_B_e_160420 www.hoentzsch.com 1/35...
- Page 2 _________________________________________________________________________________________________ Overview and brief introduction of controls and connections Thermal sensors TA, TADi Always connect just one sensor at a time! Vane wheel sensors FA(R), FT, FA(R)Di or vortex sensors VA, VAT, VADi or temperature sensors Pt100 Connector socket cap 2 analog outputs 0-10 V Close any connections not in use! analog input 4-20 mA...
-
Page 3: Table Of Contents
Key F3 - LM-Start ....................31 5.3.28 Key 4 Switch off / OFF (reset) ................31 Troubleshooting ........................32 Replacement Parts ........................33 Instruction Manual Category 3G flowtherm NT ................33 Equipment ........................33 Safety Instructions ......................33 Technical Data ........................ 34 Installation ........................34 Maintenance ........................ -
Page 4: Safety Instructions
_________________________________________________________________________________________________ 1 Safety Instructions Danger to life, risk of injury and damage to material or property. Read the Operating Instructions carefully before initial operation. Observe general safety precautions as well as those included in various sections of these Operating Instructions. Hazard risks: non-observance of the Operating and Safety Instructions modifications to the device by the customer... -
Page 5: Handling Batteries And Accumulators
_________________________________________________________________________________________________ 1.2 Handling batteries and accumulators All batteries/accumulators must be replaced at the same time. Do not replace single cells! All replace- ments must be identical (cell type / nominal capacity / make) and fitted the right way round. Possible reverse polarity of single cells is to be avoided (electrolyte formation) Recharge batteries with a suitable charger away from the unit Remove batteries when they are dead or if the device is not being used for any length of time to avoid... -
Page 6: Scope Of Delivery
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, pressure and other variables, insofar as... - Page 7 _________________________________________________________________________________________________ The following type plate is found on the back of the unit: Description of type plate specifications: Description see Section 2.1 Unit and serial no. Marking for Ex-application category 3G see Safety Instructions Section 1 see Instruction Manual Category 3G Section 8 see Declaration of Conformity Section 9 Inputs see Description Section 2.1...
-
Page 8: Technical Specifications
_________________________________________________________________________________________________ 3 Technical Specifications 3.1 Operating conditions Ambient temperature of connection housing in service : -20 ... +50 °C Type of protection : IP65 3.2 Housing and connection Type of protection : IP65 with battery compartment cover and sensor plug screwed on tightly, connector sockets not in use firmly capped, and USB connection cover tightly sealed Material... -
Page 9: Measurement Uncertainty
_________________________________________________________________________________________________ Analog outputs (2 x) : 0 ... 10 V with internal resistance of 1000 Ohm; measured, initial and final values adjustable as appropriate Analog input 4-20 mA : for connection of sensor in 2-wire system with 12 V; allocation of unit, initial value and final value adjustable Analog input 0-10 V : for connection of sensors with voltage output;... -
Page 10: Wiring Diagram For The 8-Pin Connector Plug
_________________________________________________________________________________________________ Always connect just one sensor at a time! 12-pin connector socket: for analog outputs 2 x 0-10 V for analog input 4-20 mA for analog input 0-10 V USB connector socket type B data logger readout, hardware configuration for external power supply via PC or adapter plug Always make sure that the connector sockets not in use are firmly capped, the sensor plug is screwed on tightly and the USB connection cover is tightly sealed, otherwise the IP65 protection cannot be guaranteed... -
Page 11: Wiring Diagrams For The 12-Pin Connector Plug
_________________________________________________________________________________________________ 4.3 Wiring diagrams for the 12-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 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) -
Page 12: Operation
_________________________________________________________________________________________________ 5 Operation 5.1 Key functions Switch on: with the key (also symbol) hold down until text appears in the display. Switch off: with the key (also symbol) press briefly and wait until the display goes off. Reset! Should the unit no longer react to key operation, switch off can be enforced by holding down the off key for more than 10 seconds. - Page 13 _________________________________________________________________________________________________ Examples for key functions in the menus: Menu selection list: With up or down in the list; the selected element is highlighted. With a menu level higher (backwards). With a menu level lower (forwards) = select. With select = a menu level lower (forwards). With return to measured value display.
-
Page 14: Setup Menu After Switch On
_________________________________________________________________________________________________ Setup menu after switch on: Menu Settings Sensor FA input Basic settings 5.3.1 Type 5.3.1.1 Range 5.3.1.2 Material 5.3.1.3 Directional sensing 5.3.1.4 Measurement settings 5.3.2 Medium 5.3.2.1 Section 5.3.2.2 Profile factor 5.3.2.3 Damping 5.3.2.4 Density correction 5.3.3 Operating conditions 5.3.4 Service temperature 5.3.4.1 Working pressure 5.3.4.2 Standard conditions 5.3.5... - Page 15 _________________________________________________________________________________________________ Menü Settings Output 5.3.18 Port 5.3.18.1 Source 5.3.18.2 Counter 5.3.19 Reset 5.3.19.1 Decimals 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...
-
Page 16: Parameter Settings
_________________________________________________________________________________________________ 5.3 Parameter settings Settings for vane wheel sensors FA: 5.3.1 FA - Basic settings Menu -> Settings -> Sensor -> FA input -> Basic settings The connected vane wheel sensor determines the parameter type, measuring range, material and direc- tional sensing to be set. -
Page 17: Fa - Measurement Settings
_________________________________________________________________________________________________ 5.3.2 FA - Measurement settings Menu -> Settings -> Sensor -> FA Input -> Measurement settings The task to be carried out determines the parameter, medium, section and profile factor to be set. 5.3.2.1 Medium Setting the medium: Selecting pairs of values in the basic settings (5.3.1.1) has no impact on the measurement. Selection: = Gases, the characteristic for air/gases is applied = Liquids (Fluids), the characteristic for water/liquids is applied... -
Page 18: Fa - Density Correction
_________________________________________________________________________________________________ 5.3.2.4 Damping The damping rate set here affects the measured value display, if FA is selected as sensor in the display settings (5.3.20.1). Damping also affects the analog output if FA is selected as the source (5.3.18). Damping/s: enter the damping time of 01 to 99 seconds Example 10 seconds: after every second the arithmetical average of the last 10 seconds is displayed. -
Page 19: Fa - Operating Conditions
_________________________________________________________________________________________________ If the working medium density is not known, it can be determined with the formula: W-density = P / (R * T) where P = absolute pressure in Pa, R = specified gas constant in J/(kg*K), T = temperature in K. Here the specified gas constants of some gases: sample gas specific gas constant... -
Page 20: Va - Basic Settings
_________________________________________________________________________________________________ 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. -
Page 21: Va - Operating Conditions
_________________________________________________________________________________________________ Pipe ID PF for VA40 Pipe ID PF for VA40 in mm in mm 0.719 0.808 0.729 0.819 0.738 0.830 0.750 0.839 0.761 0.842 0.773 0.845 0.784 0.850 0.796 0.850 For measurements in larger free jet as well as larger ducts or measuring tubes PF = 1.000 results in the local/punctual velocity. -
Page 22: Va - Pairs Of Values
_________________________________________________________________________________________________ VA - Pairs of values 5.3.11 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... -
Page 23: Ta - Standard Conditions
_________________________________________________________________________________________________ 5.3.13.2 Profile factor The profile factor PF specifies the ratio of mean flow velocity in the measuring section and the flow velocity measured from the sensor. Requirements are: centric sensor positioning, non-rotational inlet flow adequate dimensioned input/output sections. (See also Documents U232 and U234). Following profile factors are to be set for thermal flow sensors TA10 subject to the pipe diameter: Pipe ID PF for thermal... -
Page 24: Ta - Pairs Of Values
_________________________________________________________________________________________________ TA - Pairs of values 5.3.15 Menu -> Settings -> Sensor -> TA Input -> Pairs of values If pairs of values is selected (see 5.3.12.1), 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... -
Page 25: Output
_________________________________________________________________________________________________ Equivalency: for each of the two inputs a display equivalency can be defined. For this purpose the desired initial value of 4 mA or 0 V and the desired final value of 20 mA or 10 V is entered respectively. Example: 4 ... - Page 26 _________________________________________________________________________________________________ FA: = vane wheel sensor VA: = vortex sensor TA: = thermal sensor Only the selected sensor may be connected! 5.3.20.2 Rows The number of rows determines in how many input channels (1, 2 or 3) the measured values are displayed simultaneously after switch on.
-
Page 27: Long-Term Measurement
_________________________________________________________________________________________________ N-m3/h = standard flow rate in standard-m³ / hour calculated from flow velocity and measuring section (FA: 5.3.2.2, VA: 5.3.8.1), operating conditions (FA: 5.3.4, VA: 5.3.9) and standard conditions (FA: 5.3.5, VA: 5.3.10). N-l/min = standard flow rate in standard-liter / minute calculated from flow velocity and measuring section (FA: 5.3.2.2, VA: 5.3.8.1), operating conditions (FA: 5.3.4, VA: 5.3.9) and standard conditions (FA: 5.3.5, VA: 5.3.10). - Page 28 _________________________________________________________________________________________________ 2. press LM-STOP to stop long-term measurement, the display is frozen and the average value is displayed above the measurement period in seconds (e.g. S00030). 3. press LM-OK to exit display of average value, the instantaneous value is once again displayed and is ready for a new measurement.
-
Page 29: Device
5.3.23 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 tasks as defined in the documents are taken into account. -
Page 30: Device Status
_________________________________________________________________________________________________ Note: In this way the possible number of data records to be logged can be increased, as the length of the data record is thus reduced. This has no impact on the time stamp for the logged values. 5.3.24.1 On / Off Selection: Data logger: = On or Off Switch data logger on or off... -
Page 31: Device Profiles
_________________________________________________________________________________________________ When using rechargeable batteries, "rechargeable" must be selected in the settings (5.3.22) other- wise the battery capacity display will be incorrect! Device profiles: Device profiles 5.3.26 Menu -> Profiles The entire parameter inputs can be saved in the profiles under a freely definable name with up to 8 char- acters and can subsequently be reloaded. -
Page 32: Troubleshooting
_________________________________________________________________________________________________ 6 Troubleshooting Fault Cause Troubleshooting Device cannot be Dead batteries Insert new / re-charged batteries switched on Faulty electronics Return to Höntzsch No measured value Sensor contaminated Clean according to instructions display or analog output = 0V Profile factor set at 0.000 Set profile factor to the corresponding value of no value nominal diameter and sensor type... -
Page 33: Replacement Parts
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 NT or sensor as well as the relevant technical documents. -
Page 34: Technical Data
_________________________________________________________________________________________________ 8.3 Technical Data Marking: Explosion protection: vane wheel sensors 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. -
Page 35: Declaration Of Conformity
Höntzsch GmbH Gottlieb-Daimler-Str. 37 D-71334 Waiblingen bearing sole responsibility, hereby declare that the product flowtherm NT handheld unit referred to by this declaration is in conformity with the following standards or normative documents: Provisions of the Directive Reference no. and date of issue...
Need help?
Do you have a question about the flowtherm NT and is the answer not in the manual?
Questions and answers