omnigrad M TR 44, TR 45
6
Hauser
System components
Housing
The housing which contains the electric terminals or the transmitter, can be of different types and materials
(plastic, painted aluminium, stainless steel). The way in which it fits to the rest of the probe and the gland for
the cable entry ensures an IP grade of 65 at minimum (also refer to the figure below). All the heads supplied
have internal geometry according to DIN 43729 standard (form B), and thermometer connection M24x1.5.
Version IP66/IP67 of head type TA20A is the basic E+H aluminium housing for temperature sensors. It is sup-
plied in the E+H corporate colours, without any extra charge.
Head TA20B is a black or white polyamide housing, sometimes defined with the code BBK in the Temperature
market.
In TA21E a screw cap is employed and is attached to the head body by a chain.
Head type TA20D (aluminium), also referred to as BUZH, is able to contain a terminal block and a transmitter,
or
two transmitters at the same time.
Head TA20J is the stainless steel housing with E+H corporate design. It can also be provided with a LCD display
(4 digits), operating with 4…20 mA transmitters.
TA20R is the head suggested by E+H Temperature division for hygienic applications, because it comes in stain-
less steel and because of its "clean" design.
TA20W (BUS type) is a round grey coloured head made of aluminium, with a clip for the cap closure.
The cable glands M20x1.5 and Pg 16 supplied with the housings, accept cable diameters from 7 to 12 mm.
Fig. 5:
Housing protection grade (IP)
Head transmitter
The head-mounted transmitters available are (see also the "Electronics" section):
• TMT 180
PCP 4…20 mA
• TMT 181
PCP 4…20 mA
• TMT 182
Smart HART
®
• TMT 184
PROFIBUS-PA
®
TMT 180 and TMT 181 are PC Programmable transmitters. TMT 180 can be supplied in a version with
improved accuracy (0.1°C vs. 0.2°C) in the bandwidth -50…250°C, and
a model with a fixed measurement
range (specified by the customer in the order phase) is also available.
TMT 182 output consists of 4…20 mA and HART
®
superimposed signals.
For TMT 184, with PROFIBUS-PA
®
output signal, the communication address can be set via software or by
means of a mechanical dip-switch. The customer may specify
the desired configuration in the order phase.
Fig. 6:
TMT 180, 181, 182 (left), TMT 184 (right)
Housing type
IP
Housing type
IP
Housing type
IP
Housing type
IP
TA20A
66
67
68
TA20B 65
TA20R
66
67
TA20W
66
TA20J-(without display)
66
67
TA20J-(with display)
66
67
TA20D
66
TA21E
65
80
110
72
120
79
Ø55
85
140
98
108
11
9
108
11
3
140
95
Ø
80
Ø
4.5
Ø4
4
Ø 33
Ø
6.5
6
5
4
3
2
1
22.5
Ø 44
Ø 33
-
+
-
+
Ø
4.5
Ø4
4
Ø 33
Ø6
.5
6
5
4
3
2
1
-
+
1
8
-
+
26.8
Ø 44
Ø 33
