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On-site test procedure according to DIN EN 14175/ordering suggestion testo 400

The thermal anenmometer probe isused for measurements and monitoring of fume cupboards. The probe corresponds to the new DIN EN 14175. The advantages of the new thermalanemometer probe are the optimum flow impact behaviour and the easy handling. testo 400 provides necessary calculation such as mean value and standard deviation. The objective of the on-site testprocedure is to test the correct set- up of the fume cupboard, and to establish the performance of the fume cupboard under the prevailing conditions (indoor air flow/outgoing air system). For this purpose, the inflow as well as the outflow is measured. For commissioning test (Part 4), therequirements of the measuring instrument are identical to those in the design check (Part 3).–Direction-dependent, howevermeasurement must be possible within ± 20 °–Time constant (t63) 0.5 s–Accuracy ± (0.02 m/s + 5% ofreading) in measuring range 0.2 to 1 m/s–Anemometers must be calibratedFor the repetition test (Part 3), theanemometer must show an accuracy of 10% of reading for the inflow velocity test, and ±(0.02 m/s +5% of reading) for the outflow velocity test in the range from 0.3 m/s. The new laboratory fume cupboard probe here fulfils the requirements from Parts 3 and 4. On-site testing of a laboratory fume cupboard with testo 400 Optimum flow impact behaviour of the laboratory fume cupboard probe(0635 1047)Hot wire probe (0635 1041) optimized for duct measurement withdirection recognition General indoor air conditions duringair tests, including temperature, air pressure, air humidity and pressure difference between indoor air input and indoor air output, must continue to be measured. According to DIN EN 14175-3: 2003, the anemometer must be able to measure indoor air velocity independently of direction.With additional probes testo 400offers the possibility of measuring the general indoor conditions. testo 4 400 –Multi-function instrument testo400 for measuring temperature, humidity, P, flow velocity,absolute pressure–PC interface and ComSoft 3 Advantages o of t the l laboratoryexhaust p probe –optimum flow impactcharacteristics–robust probe with protective cap –corresponds to norm DIN EN14175
relative display in % Laboratory fume cupboard probe 0635 1047Hot wire probe 0635 1041 Twist angle in ° Laboratory fume cupboard probe at 0.5 m/s Ordering suggestion We recommend: ComSoft 3 - Professional with data management0554 0830 testo 400, multi-functional measuring instrument, incl. measurementvalue store up to 500,000 readings, VAC-module (determination of volume flow with error calculation), battery, Li-cell and calibration protocol 0563 4001Rech. batt. set for instr. (2 rech. 2.4V/1100mAh)0554 0196 RS232 cable0409 0178 Attachable printer (securely attached) including 1 roll of thermalpaper and batteries0554 0570 Thermal anemometer probe, Ø 10 mm, w. telescopic handle,measures air flow in lab fume cupboards to DIN EN 14175 0635 1047Standard ambient air probe up to +70°C0636 9740Pressure probe, 2000 hPa, measures absolute pressure, inrobust metal housing with impact protection, incl. quick-closing coupling (M8 x 0.5), magnet for fast attachment0638 1847Precision pressure probe, 100 Pa, measures differentialpressure, in robust metal housing with impact protection, incl. magnet for fast attachment0638 1347Cable, 1.5 m long, connects probe with plug-in head to meas.instrument0430 0143 SoftCase (protects instrument from impact) with carrier strap,magnetic holder and probe holder0516 0401 SoftCase for attachable printer (protects printer fromdirt/impact)0516 0411 System case (aluminium) for measuring instrument, probes andaccessories0516 0410 DKD calibration certificate/velocity, hot wire anemometer;calibration points 0.1; 0.2; 0.5; 0.8; 1 m/s0520 0224ISO calibration certificate velocity, hot wire, vane anemometer;calibration points 0.5; 0.8; 1; 1.5 m/s0520 0024 Comfort level probe for measuring degree of turbulence, withtelescopic handle and stand. Fulfills EN 13779 requirements0628 0009 Multi-function