521 User`s Manual
Contents
1. 6 5 2 Auto Off Set whether the instrument is to switch off automati cally after 10 min without any key being pressed 4 Select On or Off with A or LY and confirm the selection with f you select On the instrument will switch off auto matically after 10 min If you select Off the instrument will not switch off automatically 6 5 3 Unit Low pressure P low probe up to 2000 hPa Set the unit in which the pressure is to be displayed The selected unit will be displayed in measurements with the internal pressure sensor and all external pres sure probes differential and absolute pressure probes with a measuring range between 0 2000 hPa The following units are available hPa Pa psi Torr kPa mbar bar for ISO US Torr mmWs for ISO H20 HG for US 4 Select the desired unit with A or LW and confirm the selection with High pressure P high probe from 2000 hPa Set the unit in which the pressure is to be displayed The selected unit will be displayed in measurements with the external relative pressure probes with a measuring range between 1 and 400 bar The following units are available hPa psi kPa mbar bar for ISO US Torr mmWs for ISO H2O HG for US 4 Select the required unit with A or LW and confirm the selection with 6 Menu functions 53 d I 521 526 9d N 521 5262. 521 526 CM B 526 6 5 Device ISO US oet whether European metric or US units are to be displayed The following units will be converted m f mm inch g m gr ft m sec fom m h cfm units of pressure 4 Select ISO or US with A or LY and confirm the selection with C F Set whether temperatures are to be displayed in units of C or F 4 Select C or F with LA or LW and confirm the selection with ok 1 6 5 4 Display lighting Set whether the display light is to go on for 30 sec when any key is pressed 4 Select On or Off with LA or LY and confirm the selection with If Off is selected the light will not go on when the key ESC is pressed 6 5 5 Damping If the readings fluctuate widely it is advisable to damp the readings Set the damping which is to be used to calculate rea dings T Damping is the sliding mean calculation over n values n can be set in instrument 4 Set damping 1 20 with CA or W hold the key down to go forward back quickly and confirm the selection with 6 Menu functions 2d 6 5 Device 521 526 521 521 6 5 6 Optional Velocity Set whether the calculated velocity is to be shown on the display 4 Select On or Off with LA or LY and confirm the selection with If you select On
3. 0638 1841 0638 1941 0638 2041 0638 2141 DKD pressure calibration certificate absolute pressure 11 measuring points across the range 0 1 0 6 of full scale value for 0638 1847 0520 0225 0520 0212 DKD pressure calibration certificate differential and relative pressure 11 measuring points across the range 0 1 0 6 of full scale value for 0560 5210 0560 5211 0560 5280 0560 5281 0638 1447 0638 1547 0638 1647 0638 1747 Scalable probe calibration certificates ISO scalable probe calibration certificate 0520 0215 0520 1000 testo AG Postfach 11 40 79849 Lenzkirch Testo Strasse 1 D 79853 Lenzkirch Telephone 07653 681 0 Fax 07653 681 100 E mail info testo de Internet http www testo com 0971 5210 05 wh T 08 10 2004
4. Pitot tube factor incorrect Enter correct Pitot tube factor Pressure probe not zeroed before Zero pressure probe without applying measurement pressure Offset factor or cross section input incorrect Enter correct offset or cross section If we were unable to answer your question please contact your distributor or Testo Customer Service You will find contact details in the Warranty booklet or in Internet at www testo com 46 10 Technical data 10 1 Measuring ranges and accuracies 10 Technical data 10 1 Measuring ranges and accuracies Instruments testo 521 1 inte testo 521 2 inte testo 521 3 inte testo 526 1 inte testo 526 2 inte grated differential grated differential grated differential grated differential grated differential pressure sensor pressure sensor pressure sensor pressure sensor pressure sensor 0560 5210 0560 5211 0560 5213 0560 5280 0560 5281 Sensor Measuring range 0 100 hPa 0 100 hPa 0 250Pa 0 2000 hPa 0 2000 hPa Overload limit 300 hPa 300 hPa 50hPa 3000 hPa 3000 hPa Static pressure 2000 hPa 2000 hPa 100hPa 2000 hPa 2000 hPa Accuracy 1 digit at 0 2 of full 0 1 of full 0 5 Pa 0 1 of full 0 05 of full at nom temp 22 C scale value scale value 0 20Pa scale value scale value and meas cycle gt 1 s 0 5Pa 0 596 of reading 20 250Pa Resolution 0 01 hPa 0 01 hPa 0 1 Pa 0 1 hPa 0 1 hPa 0 to 100 hPa 0 to 100 hPa 0 to 2000 hPa 0 to 2000 hPa Type K N
5. Start the required save with the key The save process is indicated by a flashing Memory icon in the display Cancel saving with the key 18 6 Menu functions 6 2 Memory 521 526 521 526 6 2 2 Configuration only available in the Fast Automatic measurement program Set how the measurement program is to function Measurement program Fite 4 Set the measuring rate in hrs min and sec with LA or LY Hold the key down to go forward back quickly Every time 60 00 min is pas sed the hour value increases Confirm the selec tion with 5 Select the number of measurements with LA or LY hold the key down to go forward back quickly and confirm the selection with The duration of the measurement series is displayed in the upper line for your information Measurement program Fazt 20 measurements per sec 4 Select the number of measurements with A or W hold the key down to go forward back quickly and confirm the selection with l 6 2 3 Printing The logs stored for a measurement location e g the reading and other available parameters density tem perature humidity pressure cross section offset fac tor Pitot tube factor are printed 4 Select the log with LA or LW hold the key down to go forward back quickly and confirm the selection with ox 5 Printout starts The data is sent to the printer via the infrared inter face
6. gt Send the instrument directly to us at the end of its life cycle We will ensure that it is disposed of in an environmentally friendly manner 2 Intended purpose 7 2 Intended purpose Employ the instruments for the following applications only The testo 521 and testo 526 instruments are handheld pressure measuring instruments that were developed specifically for use in air conditioning ventilation equipment ther mal engineering automotive engineering and industrial plant engineering The main areas of use and measuring applications are testo 521 Air conditioning ventilation clean rooms and OPs Pressure ranges 0 to 100 hPa 0 2 5hPa Pitot tube measurement volume flow calcula tion pressure drop on filters fans testo 526 Industrial pressure measurement Pressure ranges 0 to 2000 hPa pressure in compressed air systems leaks in pipes amp lines pressure drop vacuum Both instruments offer the following features Measurement location management Data management via testo ComSoft software from Version 3 on site printout of the measured results via the testo printer Temperature measurement Wide range of probes and sensors can be connected so that one instrument covers as many measuring tasks as possible Location conditions Changes in the location and temperature of the instrument and pressure probes have an effect on the measurement results Bring the instrument and probes into a stable pos
7. the calculated velocity will be shown on the display If you select Off the calculated velocity will not be shown on the display Volume flow is automatically at Off Volume flow Set whether the calculated volume flow is to be shown on the display 4 Select On or Off with LA or LY and confirm the selection with If you select On the calculated volume flow will be shown on the display Flow is activated automati cally If you select Off the calculated volume flow will not be shown on the display 56 j EN 521 526 526 526 6 Menu functions 6 5 Device Delta P oet whether the differential pressure of two pressure probes is to be shown on the display Calculating the differential pressure P1 P2 If one external pressure probe is connected the diffe rential pressure is calculated from the internal pressure sensor P1 and external pressure probe P2 If two external pressure probes are connected the internal pressure sensor is deactivated The differential pres sure is calculated from the external pressure probes 4 Select On or Off with LA or LW and confirm the selection with f you select On the differential pressure will be shown on the display If you select Off the differential pressure will not be shown on the display Leakage rate oet whether the leakage rate Ap hr or Ap min is to be calculated and shown on the di
8. 6 2 3 Printing To print individual readings the instrument must be in the measurement menu 4 Press to print out the current readings with the date time measurement location and other available parameters The data is sent to the printer via the infrared inter face flashes during data transmission Data transfer The transmission path should not be obstructed by obstacles of any kind 55 Je D 8 Care and maintenance 43 8 Care and maintenance 8 1 Changing the battery rechargeable battery Rechargeable battery type NIMH IEC 6F22 4 To avoid the loss of data it is imperative that you switch the instrument off when changing the bat tery rechargeable battery and replace the battery in 10 min Open the battery compartment on the rear of the instrument Remove the empty monobloc battery rechargea ble battery Insert the new monobloc battery rechargeable bat tery Observe Close the battery compartment Instrument will start automatically 8 2 Charging the battery Charge batteries properly Danger of explosion gt Only start the charging process if a rechargeable Vorsicht battery is in the instrument and Rech has been set as the battery type The battery in the instrument can only be rechar ged if it is a rechargeable battery and Rech is set as the battery type Make sure a rechargeable battery is in the instru ment Make sure that Rech is
9. E 18 023 KI te TEES 18 6 2 3 1 Data transfer ari 19 GAA dl well a 20 e cT 20 6o el e 21 6 3 1 Surface NCreEMEN scri 21 boe Silla 21 che FR i 23 DE UU EE 24 6 4 1 Temperature EN 25 6 4 2 Relative humidity ri 25 6 4 3 Absolute pressure iii iii ia 25 Ae DEAS allena a 25 6 4 5 CrOSS SeCtjON ssi 26 6 4 6 Offset factor O factor ario 26 6 4 6 Pitot tube factor P factor ssaa 26 Contents 5 n ET VE SE Gol De EE 27 2 Ml lean 28 6 5 3 UNit Li 28 6 5 4 Display lighting EH 29 Pes Al iii ita 29 oe Nd i 30 il ina 30 NOUS NOW ioni 30 ll rigira lens 31 Leakage E 31 QRS ES FR remind da oen n6 QE RPH Ua UCE Des 31 Slowdown UME riore de TES d RN RR RANE ATA 33 Nominal test pressure 34 Permitted pressure OSS siii 34 Measuring FRS 34 ST ARRE RARE EA PR RERO 34 Cb GENI loi 97 66T EISE EE 37 G2 Langage e E 37 6 6 3 Battery type eegene ee 38 Dol MERE EE 38 VOS nai 39 il Zeno Bue e ER 7 2 SEICCUING TOAGINGS uxssescssbesrixteiukt vast iuter nete nuevas hd uda 39 7 3 Activating measuring Tumchomg ees 39 Hold Max Min MIGOTIL ure eritis Gili 39 ZA Sewing readings seeeeeeen wenna ia 41 e RIA 42 Care and maintenance eee 49 reel Een et Lie WEE 45 i ee rica 46 10 1 Measuring ranges and accuracies 46 10 2 Other instrument data aurora 4f Accessories spare parts 48 6 1 Fundamental safety instructions 1 Fundamental safety in
10. Socket 2 menus Different units are available depending on which standard was chosen ISO or US See 6 6 3 Unit 6 3 1 Surface increment SI This function is only visible if a temperature probe is connected Set which surface increment SI is to be calculated in addition to a surface increment stored in the probe The surface increment is the percentage increment for the measured thermocouple voltage of surface probes 5 Select the increment 0 30 96 with LA or V Hold the key down to move forward back quickly Confirm the selection with 22 6 Menu functions 6 3 Probes 521 526 521 526 521 526 6 3 2 Scaling U I This function is only visible if the 4 20 mA interface 0554 0528 or the power supply cable 0554 0007 is connected Select the scaling factors for the transmitter 5 Select Scal U I with L or LY and confirm the selection with 6 Activate the Input Unit Resolution or Output menus with 7 Select parameters with A or W and confirm the selection with Input OV 10V for power supply cable 0554 0007 OV 1V for power supply cable 0554 0007 4mA 20 MA for power supply cable 0554 0007 or 4 20 mA interface 0554 0528 OmA 20 mA for power supply cable 0554 0007 or 4 20 mA interface 0554 0528 6 Menu functions 6 3 Probes 521 526 Resolution 521 526 521 526 Selecting decimal places Place Min value Max value
11. Test time min for DN DN DN DN O J C L c c c co c asi Geck Bs N cn I Co wo E Cn 2 O2 TN c lae Dry concrete pipes NEM t L L L L C1 ss La Bs a Ae ss IC Ca vi C1 I A B i 1 5 1 5 x I DS Ro JB N CO ce P Z co S Cn a uU gt Ka co S Z c c oO NM e NM N M c Se Co n 200 20 uge Moist concrete pipes Sy cn I c gt wo Ex on RO I N GA tn Se C c c Ro c c c D I NI and all other LA aa materials 50 10 100 15 200 15 0 058 0 058 0 040 0 030 0015 00012 Pressure above atmospheric pressure sex 7 Po K In Eo For dry concrete pipes Kp L with a maximum value of 0 058 Je For moist concrete pipes and all other materials Gs DN with a maximum value of 0 058 where t lt 5 min rounded to the nearest 0 5 minutes and t gt 5 min rounded to the nearest minute In logo 34 6 Menu functions 6 5 Device Required test pressure po P Req Set the required test pressure at which measurement is carried out Required test pressure according to DIN EN1610 see table on previous page 6 Activate setting mode with Select the P Req value with LA or LY example 0 0mbar to 9999 9mbar hold the key down to move f
12. flashes during data transmission If the key in the measurement menu is pressed the reading currently stored is printed out If no log is stored the display shows Error 6 Menu functions 6 2 Memory ARRE SS Printout of current reading in the measurement menu Printout after measurement has finished 6 2 3 1 Data transfer The transmission path should not be obstructed by obstacles of any kind a a 20 6 Menu functions 6 2 Memory 521 526 6 2 4 Status Indicates the available memory space as a 551 506 9 2 5 Clearing The Clear menu item allows the entire memory to be cleared It is not possible to clear individual logs or measurement locations 4 Select Yes or No with A or LW and confirm the selection with f you select Yes the memory content will be clea red f you select No or ESS the process will be can celled 521 526 521 526 21 6 3 Probes l Menu is activated only if external probes are connected 1 In the main menu select Probes with A or Y and confirm the selection with 2 Select the desired socket with A or LY and confirm the selection with 3 Select the desired function with LA or LW 4 Activate setting mode with The following control operations for the functions Sur face increment Scaling U I and Probe reset apply equally for the Socket 1 and
13. set as the battery type see 6 6 3 Bat type Connect the connector of the mains unit to the 12 V jack of the instrument 44 8 Care and maintenance Connect the mains plug to the mains socket Question as to whether rechargeable battery should be charged Select Yes with LY and confirm with o The charging process will start automatically gt flashes during the charging process and the actual battery voltage is displayed Automatically go to measurement menu 8 3 Cleaning the instrument If the housing of the instrument is dirty clean it with a damp cloth Do not use any corrosive cleaning agents or solvents Weak household cleaning agents and detergents may be used 9 Troubleshooting 45 9 Troubleshooting Fault Instrument switches off after printing Display cannot be zeroed Saved settings and readings are no longer held in the instrument Velocity value is calculated incorrectly Velocity value is calculated incorrectly Velocity value is calculated incorrectly Volume flow is calculated incorrectly Possible causes Remedy Battery voltage too low Replace battery The differential pressure is outside Make the differential pressure lt 2 5 the zeroable range of full scale value and zero the probes again Factory reset was carried out or No remedy possible Keep readings battery was removed regularly in the software or on paper Density input incorrect Enter correct density
14. 4 Density The density is calculated automatically after the fac tors of temperature humidity and absolute pressure have been entered If you set the value for the density directly no values are displayed for temperature humidity and pressure display Ji 4 Select the density 1 9999 99 m with LA or W hold the key down to go forward back quickly and confirm the selection with 26 6 Menu functions 6 4 Input 521 6 4 5 Cross section Set the cross section for circle 1 in mm circle 2 in mm rectangle 1 ax b height x width in mm or inch rectangle2 ax b height x width in mm or inch area m that is to be used to calculate the volume flow rate The shapes listed are contained in the instrument as standard The shapes can be changed using the soft ware e g five circles 4 Select the desired function with A or LW 5 Activate setting mode with Lox 6 Select the value with LA or W hold the key down to go forward back quickly and confirm the selection with 7 Enter the next cross section To set the next values repeat steps 2 6 6 4 6 Offset factor O factor oet the offset factor that will be used to calculate rea dings The factor is stored with the cross section The factor changes when another cross section is activa ted The O factor depends on the outlet The K factor affects the calculated volume fl
15. 93 Smelting probe for measurements in non ferrous melting baths with exchangeable measuring tips 0600 5993 Adapter to connect NiCr Ni thermocouples and probes with open wire ends 0600 1693 Highly accurate air probe for air and gas temperature measurements with bare mechanically protected probe 0610 9714 Pitot tubes Pitot tube 300 mm long stainless steel measures flow velocity 0635 2245 Pitot tube 350 mm long stainless steel measures flow velocity 0635 2145 Pitot tube 500 mm long stainless steel measures flow velocity 0635 2045 Pitot tube 1000 mm long stainless steel measures flow velocity 0635 2345 Pitot tube stainless steel 360 mm long measures flow velocity incl temperature 0635 2040 Pitot tube stainless steel 500 mm long measures flow velocity incl temperature 0635 2140 Pitot tube stainless steel 1000 mm long measures flow velocity incl temperature 0635 2240 Accessories Plug in mains unit 230 V 0554 0088 Mains unit 120 V 0554 0077 9 V rechargeable battery for measuring instrument 0515 0025 Lead 1 5 m long connects probe with plug in head to measuring instrument 0409 1745 Lead 1 5 m long connects probe with plug in head to measuring instrument 0430 0143 Lead 5 m long connects probe with plug in head to measuring instrument PUR coating material 0430 0145 Lead 2 5m long for pressure probes 0638 1741 0638 1841 0638 1941 0638 2041 0638 2141 0409 0202 RS232 cable connecting lead from PC to instrument 1 8 m for data tr
16. Absolute pressure 1013 hPa Density 1199 g m Area 1 mr Pitot tube factor 1 Offset factor 1 Unit of temperature C Units ISO Unit of pressure hPa Saving manual Battery type Battery Language English Damping 1 no damping No calculated parameters activated 4 Select Yes or No with A or LY and confirm the selection with f you select Yes the instrument settings are reset to the defaults factory settings If you select No or the instrument settings are not reset 7 Measuring 521 526 521 526 521 526 Hold 7 Measuring 7 1 Zeroing the display 7 1 Zeroing the display For the display of the internal pressure to be zeroed the instrument must be in the measurement menu and there must be a differential pressure of lt 2 5 of the full scale value at testo 5213 reset lt 20 of the full scale value Please refer to the Instruction manual for the pressure probe to find out which part of the exter nal pressure probes can be zeroed gt Zero the display values of all connected zeroable pressure probes with Pz0j l Zeroing is lost when the instrument is switched off 7 2 Selecting readings If velocity or volume flow is activated these values are displayed in the upper line by pressing the LA key gt Select required reading 2 bottom line with LW 7 3 Activating measuring functions The instrument has the following
17. CEN to 2000 hPa to 400bar 40 150 C 200 1370 C Accuracy 0 1 of reading for 0 2 of reading for Probe 0638 1347 Probe 0638 1741 0 2 C 10 50 C 4 C 100 200 C 1 digit Probe 0638 1447 Probe 0638 1841 0 4 C 40 10 1 C C 200 100 1 C Probe 0638 1547 Probe 0638 1941 0 4 C 50 1 150 C 200 1 1370 C Probe 0638 1647 Probe 0638 2041 Probe 0638 1747 Probe 0638 2141 Probe 0638 1847 Resolution 0 1 Pa 0638 1347 0 01 bar 0638 1741 0 1 C 40 150 C 0 1 C 200 1370 C 0 001 hPa 0638 1447 0 01 bar 0638 1841 0 01 hPa 0638 1547 0 01 bar 0638 1941 0 1 hPa 0638 1647 0 01 bar 0638 2041 0 1 hPa 0638 1747 0 01 bar 0638 2141 0 1 hPa 0638 1847 Probe Current measurement Current voltage Current voltage measurement measurement Measuring range 0 20 mA 0 20mA 0 10V Accuracy Probe 0554 0528 0554 0007 0554 0007 1 digit 0 04 mA 0 20 mA 0 01 V 0 10 V Resolution 0 01 mA 0 20 mA 0 01 mA 0 20 mA 0 01 V 0 10 V Power supply cable Instrument accuracy data apply only to instrument without connected probe 10 Technical data 10 2 Other instrument data 10 2 Other instrument data Power supply Probe interface PC interface PC Printer interface Measuring data memory Battery life in continuous use with internal pressure sensor Battery life with connected 4 to 20 MA interface Sensor Storage transport
18. O 9999 to 99999 1 999 9 to 99999 2 99 99 to 999 99 Setting the outout Scaling takes place when the unit has been selected Example 4 20 mA should correspond to O 100 in the subsequent display Entering the min value Set the 4 mA value corresponds to 0 with A or LV 0 hold the key down to move forward back quickly and confirm the selection with Entering the max value Set e g the 20 MA value corresponds to 100 with A or W hold the key down to move for ward back quickly and confirm the selection with 6 3 3 F Reset Select whether you want to reset the probe sensor data to the standard values factory setting 5 Select Yes or No with LW or A and confirm the selection with f you select Yes probe sensor data will be reset If you select No or ES the process will be can celled 24 6 Menu functions 6 4 Input 521 6 4 Input For velocity measurement with the Pitot tube the internal pressure sensor O 100 hPa is the best for velocities from 5 100 m s For measurements in the range of 1 12 m sec use the external differential pressure probe 0638 1347 with measuring range O 100 Pa The velocity v is calculated in the instrument from the pressure difference Ap in the Pitot tube according to the following formula v m sec Sx 200000 x Ap hPa rho om To activate the velocity rate measurement and volume flow rate calculation please ref
19. al pressure 4 dP Required 5 Measuring Rate 6 Start test Units hPa ISO US mbar ISO US kPa ISO US bar ISO US psi ISO US mmWs ISO Torr ISO HG US H20 US 4 Commissioning 4 1 Inserting the battery rechargeable battery 4 Commissioning Charge batteries properly Danger of explosion gt Only start the charging process if a rechargeable Caution battery is in the instrument and Rech has been set as the battery type 4 1 Inserting the battery rechar geable battery Rechargeable battery type NIMH IEC 6F22 1 Open the battery compartment on the rear of the instrument 2 Insert the monobloc battery rechargeable battery Observe Close the battery compartment To avoid the loss of data it is imperative that you switch the instrument off when changing the battery rechargeable battery and replace the battery in 10 min Mesi C 4 2 Using the power unit The instrument can be operated with mains unit 0554 0088 without a battery rechargeable battery The instrument switches on automatically when the power unit is connected It is normal for the mains unit to warm up The mains unit has a thermostatic switch to protect it against overheating 4 Commissioning 4 3 Connecting probes sensors 4 3 Connecting probes sensors Connect the probes sensors before switching the instrument on Probe specific characteristics are only read in when the i
20. andard have been entered It is divided into 5 areas Time zone areas Pre fill time Build up of the pressure in the pipe system and the actual duration Slowdown time Measurement of the pressure which should exceed the test pressure required by the standard by about 10 over 5 min and which records the actual duration Test time Record of the actual test duration Drop time Record of the duration of the pressure drop in the line When the test has come to an end the individual required and actual test data can be printed out on the printer or automatically imported into a test log via the ComSoft software Slowdown time tSIDoHeq Set the required time According to DIN EN1610 it should be about 5 min A starting pressure that exceeds the necessary test pressure po by about 10 po must first be maintai ned for 5 min 4 Select tS DoReg 0 sec to 99 min 59 sec with A or W hold the key down to move forward back quickly Confirm the selection with You automatically return to the tlestHeg menu 6 Menu functions 6 5 Device Test time tTestReq Set the test time during which the pressure drop is monitored The test time is taken from DIN EN 1610 see table below 5 Activate setting mode with ox Select tTestReq 1 min to 99 hr 59 min with LA or LW hold the key down to more forward back quickly Con firm the selection with You automatically return to the P Req menu Material Method
21. ansfer 0409 0178 testo printer with 1 roll of thermal paper and 4 mignon batteries 0554 0545 Charger for printer with 4 standard rechargeable batteries 0554 0110 Spare thermal paper for printer 6 rolls 0554 0569 Spare thermal paper for printer 6 rolls measuring data documentation can be read for up to 10 years 0554 0568 TopSafe with magnet holder and carry belt 0516 0446 Magnetic holder for TopSafe 0554 0225 Connecting hose silicone 5 m long 0554 0440 Connecting hose set 2 x 1 m coiled inc 1 8 screw fitting 0554 0441 Quick release connection 0440 0525 System case plastic for instrument and accessories enables safe and reliable storage 0516 0526 Transport case plastic for instrument and accessories enables safe and reliable storage 0516 0527 Software ComSoft 3 Professional with measuring data management incl database evaluation and graphics function data analysis trend curve 0554 0830 50 11 Accessories Spare parts Article Temperature calibration certificates ISO temperature calibration certificate for air immersion probes calibration points 18 C 0 C 60 C ISO temperature calibration certificate instruments with air immersion probes calibration points 0 C 150 C 300 C ISO temperature calibration certificate instruments with surface probes calibration points 60 C 120 C 180 C DKD temperature calibration certificate for air immersion probes calibration points 20 C 0 C 60 C DKD temperat
22. ayed The following langua ges are available German English Itali an Spanish Portu guese French Dutch owedish 4 Select the langua ge required with LA or W and confirm the selec tion with ox Printout data Date 27 Ga DEI Times LeeLee m in rr a T3 Di Location Bi Di et i tu Pii rna Testo Str 1 Testo HG aress esi Terne amar Time z tz pud input z PBmb sSU 0mnmbB Dutput ELE CEE Limit in Cat it DA ih H ra S E HH H wba r eeh See D iii Zen Fe ZZZ i Th it E ri g ii n Ge ka ii D i Rs cn E E GK Wesen s 38 6 6 Service E SI 526 6 Menu functions 6 6 3 Bat type Set whether an ordinary battery or a rechargeable bat tery is inserted in the instrument l The battery in the instrument can only be recharged if itis a rechargeable battery and this is set as the battery type gt Only set the battery type as Rech if a recharge able battery is actually fitted in the instrument 4 Select Battery or Rech with LA or LW and confirm the selection with 6 6 4 F Reset Choose whether you want to reset the instrument set tings to the defaults factory settings i The internal memory is cleared when an F Reset is carried out The following values are reset in the instrument Auto off On Lighting Off Temperature 20 C Humidity 50 96 RH
23. e The relevant signal word indica tes the degree of risk Warning means Serious physical injury could occur if you do not take the precautionary measures indicated Caution means Slight physical injury or material damage could occur if AE you do not take the precautionary measures indicated Signal word Pay particular attention to warnings and take the precautionary measures indicated in order to avoid danger Notes on special cases and peculiarities in the handling of your unit are indicated by S an exclamation mark 521 Indicates with which instrument variant a menu can be executed 526 Content The content of this documentation relates to the German version of the instrument Standards Tests C As declared in the certificate of conformity this product fulfils the guidelines of 89 336 EEC 4 Content Content Foreword ee ied TRITT 2 EH NES NETT 3 CORE eege 4 1 Fundamental safety instructions 6 2 Letellier T S FIOGUCEOSSENDIOR senner anniren CDS Probate 8 Sch Prada 8 Circ 8 O9 Eelere 10 Ae GONNA i 12 4 1 Inserting the battery rechargeable battery 12 42 Conneclrnag TNS mans UN ica 12 4 3 Connecting probes sensors ccceeceseeeeeeeeeeeeeeeeeeees 13 5 Basic operating StepS 14 GA SUCRE nie 14 5 2 Menunavigation_ i 19 BISA TING OS ione a 16 6 1 Measurement Site esseeeH 16 be Le aaa 7 6 2 1 Man A o FaSt E 17 Ee LE le
24. e for confined spaces 0614 9893 Robust surface probe with sprung thermocouple strip for high temperature range up to 700 C 0600 0394 Pipe wrap probe for pipes with diameter of up to 2 for flow return temperature measurement in hydronic systems 0600 4593 Magnetic probe adhesive power approx 20 N with magnets for measurements on metal surfaces 0600 4793 Magnetic probe adhesive power approx 10 N with magnets for higher temperatures for measurements on metal surfaces 0600 4893 Miniature surface probe for measurements on electronic components small motors 0600 1494 Roller surface probe 0600 5093 Fast response immersion penetration probe 0604 0293 Fast response immersion penetration probe 0614 0293 Super quick action immersion penetration probe for measurements in liquids 0604 0493 Super quick action immersion penetration probe for measurements in liquids 0614 0493 Super quick action immersion penetration probe for high temperatures 0604 0593 Super quick action immersion penetration probe for high temperatures 0614 0593 11 Accessories spare parts 49 Article Order no Temperature probes Super quick action immersion penetration probe for measurements in gases and liquids with a thin low mass tip 0604 9794 Super quick action immersion penetration probe for measurements in gases and liquids with a thin low mass tip 0614 9794 Robust immersion penetration probe made of V4A stainless steel waterproof and oven proof e g for the food sector 0600 25
25. e topmost line of the display 3 Stop calculation of the mean values with 4 Calculate the chronological mean values with l The calculated mean value is displayed and can be stored or printed out Save readings with Print readings with 7 Measuring 41 7 4 Saving readings gt Reactivate calculation of the mean value with and continue recording the measurement readings with gt Cancel the process with ESS 521 526 7 4 Saving readings For the readings to be saved the instrument must be in the measurement menu Before you save the readings you must select the S measurement location under which the data is to be saved see 6 1 Measurement location Manual save mode set see 6 2 1 Man Auto 4 Press to save the current readings with the date time measurement location and other availa ble parameters 4 flashes briefly Automatic save mode set see 6 2 1 Man Auto 4 Press H to start the set measurement program aE flashes for as long as the measurement program is running The save program can be ended early by pressing Press again to save a new series of measurements Fast save mode set see 6 2 1 Man Auto 4 Press to start the set measurement program 25 measurements are saved per sec automatically 42 7 5 Printing readings 7 Measuring 521 526 7 9 Printing readings To print all readings stored for a measurement location see
26. ell If data is already stored for the chosen location D illuminates Activate setting mode with The measurement location that is currently set flas hes A location is created when the unit is first commis sioned Up to 98 additional locations can be added Press the LA key until MEN appears in the lower line Confirm with A new measurement location has been created Select the desired measurement location with A or LW and confirm the selection with Adjustable values flash 6 Menu functions 6 1 Measurement location 521 526 6 2 Memory In the main menu choose the measurement location with LA or CW Select required location with LA or LY and confirm with 1 In the main menu select Memory with A or W and confirm the selection with Select the desired function with LA or LW Activate setting mode with Adjustable values flash O N 6 2 1 Man Auto Fast 521 526 Press A or W to select Manual Automatic or Fast and confirm the selection with Manual save current readings Automatic start a measurement program that will be saved Fast save 25 measurements per second automatically Only 1 channel can be analysed during a fast mea surement Fast measurement only possible with pressure probes or internal pressure sensor The following order applies during the fast measurement External pressure sensor before internal pressure sensor Channel 2 before Channel 1
27. er to chapter 6 5 6 Alternatively it is possible to enter the variables which influence the air density at the measuring location temperature see point 6 4 1 relative humidity see point 6 4 2 absolute pressure see point 6 4 3 Additional input options for calculating the velocity or volume flow rate are the cross section see point 6 4 5 Offset factor see point 6 4 6 Calculation formula V m h K x v m s x A m x 3600 Pitot tube factor see point 6 4 7 1 In the main menu select Input with LA or LW and confirm the selection with 2 Select the required function with LA or W 3 Activate setting mode with Lox 521 521 521 521 6 Menu functions 25 6 4 Input 6 4 1 Temperature oet the temperature which is to be used to calculate the density A Select the temperature with A or LW 100 C 800 C hold the key down to go forward back quickly and confirm the selection with 6 4 2 Relative humidity oet the humidity which is to be used to calculate the density 4 Select the humidity O 100 96 with LA or LW hold the key down to go forward back quickly and confirm the selection with 6 4 3 Absolute pressure Set the absolute pressure which is to be used to cal culate the density 4 Select the pressure 400 4000 hPa with LA or LY hold the key down to go forward back quickly and confirm the selection with 6 4
28. i tion before any measurement Do not change this position during measurement Do not subject the housing to mechanical strains during measurement Media compatibility testo 521 526 Permitted medium air and non aggressive gases External low pressure probes 0638 1347 0638 1447 0638 1547 0638 1647 0638 1747 Permitted medium air and non aggressive gases External high pressure probes 0638 1741 0638 1841 0638 1941 0638 2041 0638 2141 Permitted medium refrigerant oil water air and non corrosive gases 3 Product description P 3 1 Power supply 3 Product description 3 1 Power supply Power is supplied to the testo 521 526 optionally via 9V monobloc battery type IEC 6LR61 included 9V monobloc rechargeable battery type NiMH IEC 6F22 0515 0025 Mains connection and battery charging via mains unit 0554 0088 see also page 38 6 6 3 Battery type 3 2 Controls Keyboard D Print 2 Select reading 1 top line select menu item 3 Switch on off Save data Open menu level confirm selection execute function Zero pressure probes Cancel process menu level back in measuring menu Light on Select reading 2 bottom line select menu item 9 Hold reading value display maximum minimum mean value Connections D Socket 1 and socket 2 Thermocouple probe type K NTC probe pressu re probe power supply cable 3 RS232 PC connection 12 V DC mains uni
29. measuring functions Hold value Hold Display maximum value Max Display minimum value Min Calculate soot mean value Mean Calculate chronological mean Mean For the measuring functions to be called up the instrument must be in the measurement menu gt Select the measuring functions one after the other with Hold The last readings are held in the display 40 7 Measuring 7 3 Activating measuring functions 4 E 521 526 IC DU 521526 _ EI Mean 521 526 521 526 Max The highest readings since the start of measurement are displayed Min The lowest readings since the start of measurement are displayed Mean Activate calculation of the spot mean value with Mean flashes 2 Record the reading for the calculation with 3 Repeat step 2 as required he number of recorded readings is shown in the topmost line in the display 4 Calculate the spot mean value with The calculated mean value is displayed and can be stored or printed out Save readings with Print readings with gt Reactivate calculation of the mean value with and record additional readings with Lox gt Cancel the process with ESS Mean Activate calculation of the chronological mean value with 2 Start recording readings with ok Mean flashes Areading is recorded every second The duration since the readings started being recorded is shown in th
30. n 3 3 Menu overview 10 3 3 Menu overview ok Open menu LA LV Select menu Back The menu numbers appear in the topmost line of the display Example testo 521 5j 3 m i eda 4 5 Instrument gt 3 Unit Automatic 2 P High Fast 2 Configuration _ 3 Print 1 Surface 4 Status increment 5 Delete 2 Scaling U l 3 Reset testo 521 testo 526 IS 1 Location 1 Location 1 Socket 1 2 Memory 2 Memory 2 Socket 2 3 Probes 3 Probes Surface menu 4 Input 1 Circle 1 5 Device 4 Device 2 Circle 2 6 Service 5 Service mile 3 Rectangle 1 2 Humidity 4 Rectangle 2 3 Pressure BAreat 4 Density 5 Section 6 Offset factor 7 Pitot tube factor Units menu 1 Pressure low 2 Pressure high J Date Time 3 ISO US 2 Auto off 4 C F 3 Unit 4 Light 5 Damping SE testo 521 testo 526 1 Data _2 Volume Flow Zock Rate_ 2 Language Sek 3 Battery Type 3 Tightness 4 Factory Reset test MUF menu 1 Input 2 Unit 3 Resolution 4 Output Pa ISO US hPa ISO US mbar ISO US kPa ISO US bar ISO US psi ISO US mmWs ISO Torr ISO HG US H20 US 3 Product description 11 3 3 Menu overview MUF word menu 1 Voltage current 2 lemperature 3 Humidity 4 Velocity 5 Pressure 6 Analysis 7 Other Test menu 1 Slowdown time 2 Test time 3 Nomin
31. nstrument is switched on Make sure the connections are secure but do not use force gt Connect the plug hoses of the probes sensors to the corresponding connections of the instrument 1 Pressure hoses at p and p Make sure the pressure hose does not jump away from the connection socket Risk of injury Caution gt Always use the screw locking device to secure the pressure hose at pressures above 00 hPa 2 Socket 1 and socket 2 Thermocouple probe type K NTC probe pressu re probe power supply cable 14 5 Basic operating steps 5 1 Switching on off 5 Basic operating steps 5 1 Switching on off Switching on gt Connect the required probes sensors before swit 4 ching on Switch the instrument on with D A display test will follow all segments of the display will light up for approx 1 sec 2 Automatic probe detection will be carried out The supply voltage and the actual time will be displayed 3 Set the language in which the menus are to be displayed You must set the language before the instrument is used for the first time or after a factory reset Select the language with LA or LW and confirm with The selection is stored and will be displayed automatically the next time the instrument is switched on You can change a menu setting later via the menu item Service gt Language The current readings are displayed The instrument i
32. of full scale value 0560 5281 Differential and absolute pressure probes Differential pressure probe 100 Pa 0638 1347 Differential pressure probe 10 hPa 0638 1447 Differential pressure probe 100 hPa 0638 1547 Differential pressure probe 1000 hPa 0638 1647 Differential pressure probe 2000 hPa 0638 1747 Absolute pressure probe 2000 hPa abs 0638 1847 Relative pressure probes Pressure probe 10 bar 0638 1741 Pressure probe 30 bar 0638 1841 Pressure probe 40 bar 0638 1941 Pressure probe 100 bar 0638 2041 Pressure probe 400 bar 0638 2141 Current Voltage probes Scalable probe for 4 20 mA 0554 0528 Power supply cable 1 V 10 V 20 mA 0554 0007 Replacement terminal 0205 0026 Temperature probes Globe thermometer for measuring radiant heat 0554 0670 IR surface probe for fast non contact temperature measurement 0600 0750 Quick action surface probe with sprung thermocouple strip measurement range short term to 500 C 0604 0194 Quick action surface probe with sprung thermocouple strip measurement range short term to 500 C 0614 0194 Super quick action surface probe bent probe tip at 90 angle with sprung thermocouple strip 0604 0994 Super quick action surface probe bent probe tip at 90 angle with sprung thermocouple strip 0614 0994 Robust surface probe 0604 9993 Robust surface probe 0614 9993 Robust surface probe bent probe tip at 90 angle suitable for confined spaces 0604 9893 Robust surface probe probe tip at 90 angle suitabl
33. orward back quickly Confirm the selection with i You automatically return to the menu Permitted pressure drop AP AP Req Set the maximum permitted pressure drop AP At the end of measurement this value is used to decide whether the test piece is leaking or not Required pressure drop AP according to DIN EN1610 see table on page 38 7 Activate setting mode with ok Select the AP Rea value with A or LY example O 0mbar to 9999mbar hold the key down to move forward back quickly Confirm the selection with You automatically jump to the measuring rate menu Measuring rate oet the measuring cycle at which the changes in pres sure are recorded 8 Activate setting mode with Select the measu ring rate 1 sec to 24h with LA or LW hold the key down to move forward back quickly Confirm the selection with Start Start the test with the set parameters The entire measurement process is stored in the instrument 9 Activate start mode with Cancel testing with 6 Menu functions 6 5 Device Graphic overview of the measurement process Pre fill time Slowdown Test time i Drop time i time Phase 1 Pre fill time Build up of the pressure in the pipe system and the actual duration Jump to the slowdown time menu automatically with Phase 2 Slowdown time Measurement of the pressure which should exceed the test pressure required by the standard by abou
34. ow directly For stan dard applications the factor should be 1 4 Select the O factor 0 01 10 with LA or LW hold the key down to go forward back quickly and confirm the selection with 6 4 7 Pitot tube factor P factor Set the Pitot tube factor that will be used to calculate readings Testo standard Pitot tube Prandi factor 1 Straight Pitot tubes factor 0 67 4 Select the P factor 0 01 500 with LA or LY hold the key down to go forward back quickly and confirm the selection with EN 521 526 6 Menu functions 6 5 Device 6 5 Instrument In the main menu select Instrument with LA or V and confirm the selection with 0K 2 Select the desired function menu with LA or Select Optional Confirm the selection with and select the desired function with LA or LW 3 Activate setting mode with 6 5 1 Time Set the time and date Time 4 Set the hour with LA or LW hold the key down to go forward back quickly The value to be chan ged flashes Confirm the setting with ok Repeat this step to set the minutes Date 5 Set the day with LA or LW hold the key down to go forward back quickly The value to be chan ged flashes Confirm the setting with ok Repeat the step to set the month and year 28 6 Menu functions 6 5 Device CR
35. s now operational The reading of the internal sensor is displayed in the upper line The reading of an externally connected probe appears in the lower line If two probes are connected externally the measu rement of the internal sensor is deactivated Left probe socket upper line Right probe socket lower line 5 Basic operating steps 5 2 Menu navigation Switching off Readings which are not saved will be lost when the instrument is switched off gt Switch the instrument off with 5 2 Menu navigation Operation is organised into 3 levels Measurement menu Main and submenus Configuration menus Open the main menu with and return to the measurement menu with Select the menu with A or W and confirm with ok Hepeat step 2 until you reach the function level You can make entries with LA or LY depen ding on the menu item Confirm the entry with The current value will be displayed Details about the setting and adjustment options for the individual functions can be found under 6 Menu functions gt Go back one menu level with ESS 16 6 Menu functions 6 1 Measurement location 6 Menu functions 521 526 6 1 Measurement site 4 Choose the measurement location In the main menu with A or LW The location that is currently set will be displayed If a measurement location was allocated via the testo ComSoft software this is displayed as w
36. splay The leakage rate is always calculated for just one channel The channel to be measured is selected automatically according to the following rule external probe before internal probe measuring channel 1 before measuring channel 2 4 Select Ap hr or Ap min with LA or LW and confirm the selection with Measurement starts and the pressure reading is displayed immediately After about 10 sec the first pressure difference will be displayed and updated continuously Measurement can be restarted at any time by pressing the key P 0 Press or ESS to end measurement Tightness test The tightness test menu is used in order to analyse the pressure loss of the vessel pipes lines etc The steps for performing the tightness test The tightness test menu is used in order to analyse the pressure loss of the vessel pipes lines etc 32 6 Menu functions 6 5 Device The steps for performing the tightness test Test with air based on the standard DIN EN1610 Construc tion and testing of drains and sewers are outlined in the instrument menu Enter the set slowdown time tSIDoReq Enter the set test time tTestReq Enter the set test pressure at which the measurement is to take place P Rea Enter the permitted pressure drop Ap in hPa that is critical in order to assess whether the pipeline is leaking or not AP Reg The test can start once the required values according to the st
37. structions AN Avoid electrical hazards gt Never make measurements with the instrument and its probes on or near live com ponents unless the instrument is expressly approved for current voltage measurements AN Protect the instrument gt Never store the instrument together with solvents e g acetone AN Product safety preserving warranty claims Operate the instrument only within the parameters specified in the technical data Handle the instrument properly and according to its intended purpose Never apply force V v vy y Temperatures given on probes sensors relate only to the measuring range of the sen sors Do not expose handles and feeders to any temperatures in excess of 70 C unless they are expressly permitted for higher temperatures gt Open the instrument only when this is expressly described in the Instruction Manual for maintenance purposes gt Carry out only the maintenance and repair work that is described in the Instruction Manual Follow the prescribed steps exactly For safety reasons use only original spare parts from Testo gt Any further or additional work must only be carried out by authorised personnel Testo will otherwise refuse to accept responsibility for the proper functioning of the instrument after repair and for the validity of certifications ay b Ensure correct disposal gt Dispose of defective rechargeable batteries and spent batteries at the provided col lection points
38. t 0554 0088 Pressure nipple p with quick release connection M8 x 0 5 only for testo 526 Pressure nipple p with quick release connection M8 x 0 5 only for testo 526 3 Product description S 2 CONTOS Display M HH N HEHE m D Header see detailed explanation of icons below MAN MAN ap E EI ene in me EE Designation of internal sensor or input socket 1 H B5 B HN LL a with selected channel and parameter unit PF I 3 Reading 1 N N N l N Nu Designation of input socket 1 or 2 with selected LIL l i l N channel and parameter unit 5 Reading 2 EERE EEE Measuring functions Hold Max Min Meane Mean Icons in the header m Counter for identifying the stored logs in the case of manual automatic and fast storage of the measure ment series N nnnn Counter for identifying the measurements in a measure ment series in the case of automatic and fast storage MAN Li E Appears manual saving set Flashes current readings saved AUTO Appears automatic saving set B Ei Flashes automatic saving running E s Tj The memory content will be cleared mm Appears printing possible Flashes print function activated BEEN Battery rechargeable batter capacity All segments dark rechargeable battery battery full E All segments light flashing Battery rechargeable bat tery empty The instrument switches off automatically after 1 min 3 Product descriptio
39. t 10 96 over 5 min and which records the actual dura tion Jump to the test time time menu automatically with 36 6 Menu functions 6 5 Device Phase 3 Test time Recording of the actual test duration Jump to the drop time menu automatically with Phase 4 Drop time Record of the duration of the pressure drop in the line Jump to the end of measurement menu automatically with Phase 5 End of measurement At the end of measurement the full pressure difference is displayed and the readings are analysed in order to determine whether or not the system is to be classed as leaking Press the key to print out the measurement result All values are given in bar to enable comparison Return to the measurement menu with The last log to be saved is displayed 6 Menu functions 521 6 6 Service 6 6 Service 1 In the main menu select Service with A or V and confirm the selection with 9X 2 Select the required function menu with LA or Confirm the selection with and select the required function with LA or LW 3 Activate setting mode with 6 6 1 Data Indicates the battery voltage and firmware version When the key is pressed all information stored in the instrument will be printed out 6 6 2 Language oet the language in which the menus are to be displ
40. temperature Operating temperature temperature compensated Intrinsic leakage Display Weight inc TopSafe and battery Housing material Dimensions Measuring rate Refresh rate of display Other Warranty 9 V monobloc 6LR61 alkaline manganese or mains unit 12 V DC Round 8 pin plug ComSoft V3 4 connecting lead 0409 0178 RS232 interface Infrared approx 25000 readings 30h with alkaline manganese 10 hrs with rechargeable battery 18 hrs with zinc carbon at 25 C and without lighting Dependent on transmitter connected Recommendation Use mains unit Piezoresistive 20 70 C 0 450 C 0 3 96 pressure drop from test pressure over a period of 1 minute LCD display with symbol 7 segment display and dot matrix part approx 600 g ABS LxWxH 219x 68 x 50 Auto 1s to 24h fast 0 04s 2 x per sec with fast measurement 4 x per sec Automatic detection of all connected probes 24 Months 48 11 Accessories Spare parts 11 Accessories spare parts Article Order no Instruments Differential pressure meter testo 521 1 accuracy 0 2 of full scale value 0560 5210 Differential pressure meter testo 521 2 accuracy 0 1 of full scale value 0560 5211 Differential pressure meter testo 521 3 accuracy 0 5Pa 0 to 20Pa 0 5Pa 0 5 of reading 20 250Pa 0560 5213 Differential pressure meter testo 526 1 accuracy 0 1 of full scale value 0560 5280 Differential pressure meter testo 526 2 accuracy 0 05
41. testo 521 testo 526 Instruction Manual en 2 Foreword Copyright Foreword Copyright Foreword Dear Testo Customer We are delighted that you have chosen a product from Testo We hope that the product will give you a long period of satisfaction and will aid you in your work If problems should occur which you cannot rectify yourself please consult our service department or your dealer We will endeavour to provide fast and competent assistance to avoid lengthy down times Copyright This documentation is subject to the copyright of testo AG Reproduction and use con trary to the legitimate interests of Testo AG are prohibited without the prior written con sent of the company We reserve the right to modify technical details from the descriptions specifications and illustrations contained in this documentation testo AG Postfach 11 40 79849 Lenzkirch Germany General notes 3 General notes This documentation contains important information about the features and use of the product Please read this document through carefully and familiarise yourself with the operation of the product before putting it to use Keep this documentation to hand so that you can refer to it when necessary Pictograms This product could be dangerous if operated incorrectly Information that requires parti cular attention is identified in these Operating Instructions by pictograms Warnings are identified by means of a warning triangl
42. ure calibration certificate for air immersion probes calibration points 0 C 100 C 200 C DKD temperature calibration certificate surface temperature probe contact calibration points 100 C 200 C 300 C Pressure calibration certificates ISO pressure calibration certificate absolute pressure 5 measuring points across the range for 0638 1847 ISO pressure calibration certificate absolute pressure 5 measuring points across the range 5 10 15 20 25Pa for 0560 5213 0638 1347 ISO pressure calibration certificate differential and relative pressure 5 measuring points across the range for 0638 1347 0638 1741 0638 1841 0638 1941 0638 2041 0638 2141 0560 5213 ISO pressure calibration certificate differential and relative pressure 5 measuring points across the range for 0560 5210 0560 5211 0560 5280 0560 5281 0638 1447 0638 1547 0638 1647 0638 1747 ISO pressure calibration certificate differential and relative pressure 5 measuring points across the range for 0560 5281 DKD pressure calibration certificate diff and relative pressure 11 meas points across the range lt 0 1 of fsv for 0560 5281 Order no 0520 0001 0520 0021 0520 0071 0520 0211 0520 0221 0520 0271 0520 0125 0520 0405 0520 0005 0520 0025 0520 0035 0520 0205 DKD pressure calibration certificate differential and relative pressure 6 measuring points across the range gt 0 6 of full scale value for 0638 1347 0638 1741
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