Product Overview
The ABB TTH300.Y0.H.BS is a two-channel, head-mounted temperature transmitter. It converts signals from RTDs, thermocouples, resistance sensors or millivolt sources into a 4–20 mA HART output for remote monitoring and control.
Technical Specifications
| Product information | Specification |
|---|---|
| Manufacturer | ABB |
| Product family | TTH300 |
| Configuration | TTH300.Y0.H.BS |
| Mounting | DIN Form B sensor head |
| Sensor inputs | Two universal inputs |
| Compatible sensors | RTD, thermocouple, resistance and mV |
| Output | 4–20 mA |
| Communication | HART 5/HART 7 |
| Wiring technology | Two-wire |
| Accuracy | 0.1% |
| Long-term stability | 0.05% per year |
| Electrical isolation | Yes |
| Explosion protection | Y0: Without Ex approval |
| Configuration code | BS: Standard configuration |
| Functional safety | SIL 2; SIL 3 with redundant configuration |
| Optional display | Rotatable LCD with operating buttons |
| Diagnostics | Sensor-break, corrosion, drift and NE 107 device-status monitoring |
Product Description
The TTH300 accepts one or two temperature sensors and transmits the measured value through a vessel’s 4–20 mA automation loop. Its dual-input arrangement supports:
- Automatic sensor redundancy
- Backup switching following sensor failure
- Differential and average-temperature measurement
- Sensor-drift monitoring
- RTD and thermocouple error correction
- HART configuration and diagnostics
Typical marine applications include:
- Main-engine exhaust-gas monitoring
- Bearings and stern-tube temperature measurement
- Boiler and economizer systems
- Fuel, lubricating-oil and cooling-water systems
- Cargo and utility process equipment
- Retrofit of obsolete head-mounted transmitters
