Heinrichs Messtechnik GmbH
TM/TMU/TM-SH Supplement Manual
For Explosion Flow-meters
Page 9 of 20
The following maximum cable parameters must be abided to:
C
L
= 100 pF/m wire to wire
C
L
= 170 pF/m wire to shield
L
L
= 700 µH/km wire to wire
L
L
= 500 µH/km wire to shield
Warning
If a connecting cable other than the Heinrichs Messtechnik cable is used, the intrinsic
safety of the cable is to be validated using the cable’s nominal values
3.4
EC Type-Examination Certificate for the sensors type TM, TMU and TM-SH
The sensors are certified with the following examination certificates:
CSA (North America)
CSA18CA70171067X
Class I Division 1 and 2, Group A,B,C,D
Class I Zone 1: AEx ia TX Ga
ATEX (Europe)
DMT 01 ATEX E 149 X
II 1/2G Ex ia IIC T6-T2 Ga/Gb
IECEx (Global)
IECEx BVS 11.0084 X
Ex ia IIC T6-T2 Ga/Gb
NEPSI (CHINA)
GYJ17.1166X
Ex ia IIC T2~T6 Ga/Gb
KCS (KOREA)
12-KB4BO-0116X
Ex ia IIC T6-T2
and are approved for the use in potentially explosive atmospheres. (hazardous classified locations)
The sensor may be used in such a way that inside the measuring tubes explosive atmosphere may be present
often or for a long time (Zone 0).
