FOUNDATION Fieldbus™ temperature transmitter as head or field device with two universal sensor inputs suitable for use in hazardous areas. 2 universal input channels and FF™ protocol for the conversion of input signals into digital output signals. The device stands out due to signal reliability, long-term stability, high precision and advanced diagnostics (important in critical processes). For the highest level of safety, availability and risk reduction. Installation in flat-face terminal head as per DIN EN 50446. Optional installation in field housings even for use in Ex d areas – with mounting brackets for wall or pipe mounting.
Benefits
- Easy and standardized communication via FOUNDATION Fieldbus™ H1
- Straightforward design of measuring points in Ex-areas through FISCO/FNICO conformity in accordance with IEC 600079-27
- Safe operation in hazardous areas thanks to international approvals such as FM IS, NI; CSA IS, NI; ATEX Ex ia, Ex nA for intrinsically safe installation in zone 1 and zone 2
- High accuracy through sensor-transmitter matching
- Reliable operation with sensor monitoring and device hardware fault recognition
- Several mounting versions and sensor connection combinations
- Rapid no-tools wiring due to optional spring terminal technology
Measuring principle
Head transmitter
Input
2 x RTD, TC, Ohm, mV
Output
FOUNDATION Fieldbus H1
Auxiliary power supply
9…32 V DC (FOUNDATION Fieldbus)
9…17,5 V DC (FISCO/FNICO)
Communication
FOUNDATION Fieldbus H1
Installation
Terminal head form B
Accuracy
(Pt100) <= 0,1 K
(Pt100) <= 0,18 °F
Galvanic isolation
yes
Certification
ATEX Ex ic, Ex ia, Ex nA, Ex tc, Ex d
ATEX IECEx Ex ia
IECEx Ex ia, Ex tb, Ex d
CSA C/US General Purpose
CSA IS, NI, XP, DIP
FM IS, NI, XP, DIP
FM+CSA IS, NI
FM+CSA IS, NI + ATEX IECEx Ex ia
INMETRO Ex ia, Ex d, Ex tb
NEPSI Ex ia, Ex ec, Ex d, Ex tb
EAC Ex ia, Ex d
UKCA Ex tb, Ex tc, Ex ia, Ex nA, Ex db
Features
- Dual-channel input – allows two independent temperature measurements.
- Universal input types:
- RTD sensors (Pt100, Pt200, Pt500, Pt1000, etc.) according to IEC 60751
- Thermocouples (Types B, E, J, K, N, R, S, T, etc.)
- Resistance (Ω) and voltage (mV) signals
- Output signal: FOUNDATION Fieldbus H1 digital protocol
- Accuracy: up to ± 0.1 K for Pt100
- Measuring range: typically –200 °C to +850 °C (depending on sensor type)
- Installation: fits DIN EN 50446 Form B sensor heads or field housings
- Diagnostics and reliability:
- Sensor monitoring for open/short circuits or cable corrosion
- Channel redundancy: automatic switch to second channel on failure
- Sensor drift detection and alarm functions
- Ex protection: approved for hazardous (Ex d, Ex ia, etc.) zones
