Heinrichs Messtechnik GmbH
TM/TMU/TM-SH Supplement Manual
For Explosion Flow-meters
Page 11 of 20
3.5.4
Ambient temperature range Ta
The ambient temperature range is dependant on the type of connection, installation, process
temperature and temperature class.
For determining the prevailing temperature class at the location of installation refer to the following
tables as well as the relevant type certificate:
With HAN R23 plug
Neck extension (Between the
TM, TMU or TM-SH
*
sensors,
and the Harting HAN R23
Connector)
Process temp. (°C)
-50 °C to ..
Ambient temp.
range (°C)
-40 °C to ..
Temperature
class
without
40
45
T6
without
60
60
T5
60 mm
100
80
T4
160 mm
115
80
T4
160 mm
175
80
T3
160 mm
180
80
T2
260 mm
220
80
T2
CAUTION: The temperature ranges and classes printed in BOLD and Cursive, are NOT available for
installation in North America
*
TM-SH sensors are restricted to Tamb = 60 °C and T process = -40°C to 60°C, see Table coils.
Remote mount configuration (Junction box)
Neck extension length
(Between the TM, or TMU
sensor neck, and the J-Box)
Sensors have a standard neck
> 60mm
Process temp. (°C)
-50 °C to ..
Ambient temp.
range (°C)
-40 °C to ..
Temperature
class
without
40
40
T6
without
60
60
T5
without
100
80
T4
100 mm
115
80
T4
100 mm
175
80
T3
100 mm
180
80
T2
200 mm
220
80
T2
CAUTION: The temperature ranges and classes printed in BOLD and Cursive, are NOT available for
installation in North America.
