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Application Note APNE-0003
Fieldmeter Measurement Techniques Using Monroe
Electronics Model 1036 Probes
Monroe Electronics Model 1036 fieldmeter probes are calibrated (or, more correctly, "standardized") in a true
uniform or homogeneous field. The calibration fixtures used are designed to produce parallel field lines.
As a true uniform field does not usually occur in most practical measurement situations, partly due to the
introduction of the grounded probe itself, one must either:
1. Attempt to better the geometry by establishing a grounded plane, through which the fieldmeter probe
can view the field under consideration,
2. Establish a correction factor for the data, or
3. Accept relative data. In many cases, this is perfectly acceptable practice once a fixed geometry is
established.
Some guidelines are offered here.
During the standardization procedure, these probes are configured as shown in Figure 15 with the face of the
probe flush with the bottom of the upper metal plate or "shroud" which is referenced at ground potential. This
shroud effectively increases the area of the face of the probe. It and the surface under test (in this case, gradient
plate) can be considered to be infinitely large as long as the size of the plates exceeds 5 or 6 times the distance
between the plates.
Please note that the diameter of the face of the Model 1036F probe is approximately 1½ inches. The face of the
Model 1036E is 4¼ inches by 2¾ inches. Either probe type used on its own without a shroud will tend to perturb
a field as shown in Figure 16.
HV
Source
Convergent field lines
Figure 16
1036 Probe
Ground
Plate
Gradient
Plate
d
>
5d
HV
Source
(Shroud)
Figure 15
- Multi-Point Fieldmeter and 1
- Alarm System 1
- TABLE OF CONTENTS 2
- WARRANTY 3
- GENERAL 4
- SPECIFICATIONS 5
- Charged 6
- Surface 6
- INSTALLATION 9
- PRINCIPLE OF OPERATION 11
- Servicing 15
- 1 0 36 P ro be 16
- A s sem b ly 16
- Spacing 18
- Typical Setup 19
- OPERATION 20
- Remote LED 23
- 177A Software 24
- Optional 4 – 20 mA Module 31
- 4_20_APPNOTE_060607.cdr 33
- Upgrading the Firmware 34
- PROBE CONNECTION OPTIONS 36
- Figure A-I-1 38
- Figure A-I-2 39
- INTRINSIC SAFETY BARRIERS 43
- APPENDIX IV 48
- Application Note APNE-0003 51
- 1036 DATA 52
- APPLICATION NOTE APNE-0014 53
- I. Introduction 54
- Separation of charge 55
- APPLICATION NOTE APNE-0015 63
- VII. I. Introduction 64
- Grounded 65
- APNE-0016 66
- IX. III References 76
- APPLICATION NOTE APNE-0016 77
- Model 1036 Probes 81
- 1036 Probe 84
- Assembly 84
- Main Meter AssemblyProbe 86
- IV. References 87
- General 89
- Figure V-1 92
- Figure V-2 93
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