Prothermo NMT 538
16
Hauser Systems & Gauging
Diagram 2:NMT538 with Weed Beacon MWR type with Water Bottom sensor
caution!
RTD probe side cables color may differ from diagram above. Note the connection and cable color
combination during disassembling previous RTD temperature converter. This will prevent faulty
element to converter connection.
Uneven cable length can influence the precise temperature calculation to be inaccurate result.
Trim cable end to the even length as much as possible in case of uneven cabling condition
presents at the RTD probe side cables.
Coaxial cable for capacitance signal to auxiliary converter
NMT538 temp. + WB version allows accessibility of coaxial cable (Water Bottom capacitance
signal) from the auxiliary capacitance to HART converter (DREXELBROOK and others). The
sensor cable from WB probe and converter cable through cable outlet can meet within NMT538
terminal housing or sensor cable can directly exit from cable outlet. Some WB capacitance sensor
might have additional ground wire. Please route this wire to the existing CV converter accordingly
without interruption inside of the NMT 538 housing.
WB out
WB out
WB in
WB in
No .16
No .15
No .14
No .13
No .12
No .11
No .10
No . 9
No . 8
No . 7
No . 6
No . 5
No . 4
No . 3
No . 2
No . 1
B
Ø, B
b
No.14 (white & yellow)
yellow & black
green & black
blue & black
No.13 (white & orange)
orange & black
No.12 (white & red)
red & black
No.11 (white & brown)
brown & black
No.10 (pink)
black
No. 9 (white)
white
No. 8 (gray)
gray
No. 7 (violet)
violet
No. 6 (blue)
blue
No. 5 (green)
green
No. 4 (yellow)
yellow
No. 3 (orange)
orange
No. 2 (red)
red
No. 1 (brown)
brown
white & black
violet & black
black
black
CAPACITANCE (+)
to auxiliary
capacitance converter
CAPACITANCE (-)
+
_
cables from
Weed Beacon
MW or MWR type
temp. & WB probe
from the tank
to NMT538
electronics
cables from
NMT538 module
cramp
connection
connection in the
NMT538 terminal housing
(temp. & WB version)
gray & black
3 Installation
