Endress+Hauser Prothermo NMT81 - Converter + Average Temperature Probe Version

Installation Prothermo NMT81
16 Endress+Hauser
5.3.1 Option 2: Measurement functions
Option 2 has the same functions as option 1; however, option 2 is designed so that a
special M20 threaded connection opening fits directly in the existing terminal housing of a
Varec 1700. The wiring of RTD signals from the probe to NMT81 is done in the terminal
box of the Varec 1700 and not on the NMT81 side. For this reason, there is no additional
housing provided to NMT81 as in option 1.
5.4 Converter + average temperature probe version
ø27.2
(1.07)
d
c: 19.5 (0.77)
ø27.2
(1.07)
a
182.3
(7.18)
b
180
(7.09)
b
180
(7.09)
ø100.9
(3.97)
d
1
2
3
1.
A
1.
B
ø100.9
(3.97)
a
182.3
(7.18)
c: 19.5 (0.77)
ø27.2
(1.07)
d
1
2
A0042769
 6 Converter + average temperature probe. Unit of measurement mm (in)
A Adjustable flange
B Welded flange
a Converter height
b Adjustable installation height
c Based on flange standards
d Temperature probe length (see below)
1 316L
2 316L
3 316L
The following tolerances are applied regardless of whether or not there is an optional WB
probe. However, the position of the flange cannot be adjusted in a welded flange type.
Probe length Tolerance of probe and element positions
1 000 to 25 000 mm (39.37 to 984.25 in) ± 50 mm (1.97 in)
25 001 to 40 000 mm (984.29 to 1 574.80 in) ± 50 mm (1.97 in)
40 001 to 60 000 mm (1 574.84 to 2 362.21 in) ± 100 mm (3.94 in)
60 001 to 100 000 mm (2 362.24 to 3 937.01 in) ± 300 mm (11.81 in)