Usage With The As-Probe Adapter; Usage With The As-Adapter 3; Zero Chamber (Optional); Linearity Curves (Optional) - Projekt Elektronik FM 302 Operating Manual

Teslameter

Table of Contents

6. Operation

6.4.12.3 Usage with the AS-Probe Adapter

To simplify the usage of the AS-active-probe as autonomous transducer, the

AS-probe adapter can be used. It provides high stable ±3 V to supply the

probe and amplifies the output signal to ±10 V.

For further details see section 6.6.4 Usage of the AS-Adapter.

Up to three AS probes simultaneously can be operated on the AS-Adapter

3. The AS-Adapter 3 ensures the supply of all connected probes.

Further details can be found in chapter 6.6.4 Using the AS-Adapter 3

Optional a zero chamber is attainable for our instruments.

The zero chamber is a one side closed pipe of good magnetic shielding

metal to shield the existing outer field. That is at least the earth magnetic

field. In addition there may be other interfering fields from the environment.

In real world shielding may not be 100 %. A small residual magnetic field

remains inside of the zero chamber.

If necessary the zero point of an AS-active-probe may be checked and

adjusted with the help of a zero chamber. Therefor the AS-probe is feed into

the zero chamber. Now one can assume that the magnetic field is sufficient

shielded. With the "zero" key of the Teslameter FM 302 (see section 6.3.1.7

Key "zero" – Offset Compensation) the display may set to zero in the most

sensitive range.

Linearity curves are optionally available for the AS-active-probes. The

linearity curves are used for determining exact field values at up to five

Projekt Elektronik

MESS - UND REGELUNGSTECHNIK GMBH

Figure 55 Structure AS-active-probe

Figure 56 Zero Chamber

Page 69

Table of Contents