The “Van der Hoofden” test head VDHH 9502 allows to determine the exposure of humans to radiation caused by luminaries. The measurement is based on DIN IEC 62493:2015 and VDE 0848-493. Through different ways of coupling between luminaries and humans a level of exposure of a person to electromagnetic fields can be derived. One part of the exposure is based on capacitive coupling between lighting equipment and person. This induces current densities. These current densities must be measured and evaluated using an EMI receiver and a van der Hoofden test head.
| Frequency Range: | 20 kHz – 10 MHz |
| Measuring Output: | 50 Ohm BNC female |
| Ambient temperature: | -10° … +60°C |
| Diameter of the sphere / head: | 210 mm |
| Fixture clamp for rods with a diameter of: | 38 – 50 mm |
| Weight: | ca. 310 g |
Datasheet VDHH 9502
Program for the calculation of F-factor acc. IEC 62493:2015
Program for the calculation of F-factor (R&S format) acc. IEC 62493:2015
Measurement Procedure:
The van der Hoofden test head consists of 3 elements: An electrically conductive sphere with a diameter of 210 mm, a connection line of 300 mm length, and a protection network for the EMI receiver.
The test head is equipped with a 3/8″ female thread. It can be mounted on an insulated mast system with height adjustment. The protection network is housed in the mast fixture clamp. It has to be connected with the test head via the 300 mm cable which is included in the delivery. The cable is equipped with 4 mm banana plugs. The clamp with the protection network must be fixed to the mast below the head.
A perfectly suited mast system is the AM 9144 with option “very short”. This allows a height set range of 0.8 – 1.4 m. The lowest required height acc. IEC62493 is 0.8 m. AM 9144 allows to continuously adjust the height up to 1.4 m in telescopic manner. Adding extender pieces of fixed lengths 0.6 and 1.2 m allows to continuously adjust the range from 0.8 to 3.2 m.
