Some users of old e-meters who have switched to digital e-meters report that the TA reading on digital e-meters (not only on Theta-Meters) sometimes exceeds the TA reading on old Quantum e-meters.
Let's analyze the main reasons for the increase of TA on the e-meter.
First and foremost is dry skin. If you are in a cool and dry climate and do not moisturize your hands before your sessions, you can well expect TA to increase to a difference of more than 2.0TA.
Tight and constricting clothing and shoes can also cause an increase in TA.
Lack of exercise and a sedentary lifestyle.
Miscavige Church found another cause not too long ago - cold feet and therefore recommends checking the temperature of the PC's feet before sessions.
Changes in diet, seasons, past illnesses (arthritis, skin diseases, etc.), and taking certain medications can affect TA.
One of the causes of TA growth is the failure of a solo auditor to confront a new device due to insufficient familiarity with it. For this purpose the exercise with e-meter №1 is used - reach/withdraw and it is desirable to redo the basic e-meter drills with the new e-meter to familiarize the specialist with the new device.
Of course out-int, out-rudiments, protests and other variants of bypassed charge also rised the TA reading of the instrument.
An additional increase in TA may be caused by changing cans when testing on two different instruments - the new cans may be cold and not as wet as the previous cans that have hand sweat on them.
If you use cans coated with metals other than tin, such as aluminum, chromium, nickel, or their alloys, this also causes TA readings to be overstated.
Ron Hubbard provided accurate resistance data for various TA readings, and we used his data to design the circuit.
Scientifically, everything is fine, and with a tester, anyone can verify that the instrument shows the correct resistance and maintaining it for a long period of time without change.
If we compare instrument readings using an e-meter tester, digital and analog instruments give identical readings. The accuracy and measurement quality of digital instruments is as good as that of analog instruments. You can see the results of this comparison on video.
A reputable organization practicing standard technology provided me with a report of measurement results:
As you can see, the measurement results show that the difference in readings usually does not exceed 0.5TA.
In order to make correct measurements, the PC should not know which e-meter the cans are connected to, so that its subjective opinion and non-confront cannot affect the test results.
Why do some cases (exactly some cases, not all!) have higher TA with digital instruments?
The only difference between digital and analog instruments is the voltage that is applied between the electrodes of the electronic meter to measure the resistance of the body to the passage of electric current through it.
Digital devices use a voltage of 2.5 V and 3.3 V. And in older instruments it is about 7 V. This is because during the development of the first e-meters, a voltage of 9 V was used to power them. Later, the technology of manufacturing electronic devices changed, and we don't need to use such high voltages to make the electronic circuit work. We can use much lower voltages. Using lower voltages in electronics has become a standard because they save power consumption.
My conclusion. Constant voltage applied to the body has an suppressive effect on the cells of the body. It otherdetermines biochemical functions and suppressively affects their performance. Therefore, the higher the voltage, the greater the suppression and the lower the resistance of the complex biological system that is our body. It turns out that the resistance of the body depends on the applied voltage. The higher the voltage, the less it resists the passage of electric current through it. And as a conclusion - lower voltage causes less damage to the body, less it suppresses. At the same time, constant voltage up to 12 V is considered safe for humans for short-term exposure.
At the moment I am in the process of researching whether it would be possible to limit myself to lower voltages (3.3V or 4.1V instead of 2.5V) to supply the electrodes of the cans, so as not to change the circuitry of the e-meters.
Making the voltage on the cans 7V will be much more difficult and expensive, the size and price of the devices may increase, also the tin layer on the cans from such voltage will degrade several times faster. So I would not want to go for this option, it is too expensive and inefficient. Nevertheless, it can be realized if there is a need for it.
What can be done from the auditor's point of view? He can consider the preclear's TA to be at least 0.25TA less (up to 0.5TA). He can also do an exam on an old analog electronic e-meter with the same cans if there are questions and see if there is a TA difference on different types of e-meters.
As a case supervisor with over 20 years of experience, I can tell you that the emphasis on high TA is greatly exaggerated and leads to endless case handling instead of just keeping the pc moving on the Bridge, especially in cold and dry regions. Constantly checking for high TA causes the pc frustration, wastes his auditing time, and is a violation of the auditor's code. Therefore, when you are satisfied that your pc has no missed charge on the high tone arm, proceed to the main action of the session, do not take the pc from his regular program or fix his attention on the TA and e-meter.
I hope my answer has been helpful to you.
Regards,
Mikhail Fedorov