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4. 4-20mA Output
The current loop on the MS3510E unit will send a continuous measure of the current probe reading.
This is a linearized signal that can easily be converted to ‘probe life units’ (PLU) at the receiving
device by applying the following simple algorithm:
PLU =
.............................. (3)
A = Loop Current in mA
Total metal loss (ML) may be derived from:
ML =
................................................... (4)
A = Loop Current in mA
K = Probe Constant
Corrosion rate (CR) may also be derived as:
CR =
................................................ (5)
(A-4) 1000
16
(A - 4) K
16
(A
2
- A
1
) K x 365
16 (T
2
- T
1
)
A
2
= Loop Current at Time T
2
A
1
= Loop Current at Time T
1
T
2
= End Time (Days)
T
1
= Start Time (Days)
K = Probe Constant