TTH300 — ABB
Head-mounted transmitter with HART, SIL and one of the broadest Ex approval packages — up to zone 0.

The TTH300 sits in the sensor head, takes a Pt100 or thermocouple and outputs a galvanically isolated 4…20 mA signal with HART. Its Ex certificates cover use in zone 0, with combinations for zone 1 and zone 20.
Technical data
| Installation | Sensor head mounting |
| Input | Pt100 (RTD) · thermocouples |
| Output | 4…20 mA · HART |
| Galvanic isolation | ja |
| Functional safety | SIL |
| Explosion protection | Type of protection intrinsic safety — zone 0: II 1 G Ex ia IIC T6…T1 Ga · zone 1 (0): II 2 (1) G Ex [ia IIC Ga] ib IIC T6…T1 Gb · zone 1 (20): II 2 G (1 D) Ex [ia IIIC Da] ib IIC T6…T1 Gb |
Versions in our stock
| GHI article number | Version |
|---|---|
| HMUTTH300000000 | HART, SIL — without Ex |
| HMUTTH300EX0000 | HART, SIL, Ex ia — zone 0 |
Enquire about the TTH300
We configure and programme the transmitter to your measuring range — tell us the sensor, range and output. info@ghi-gmbh.de or +49 6181 504 93 18
Back to the overview Temperature transmitters · We carry out programming and calibration in our own laboratory .