AMAC Group | Saudi Industrial Instrumentation
Temperature Transmitters, RTDs, Thermocouples & Thermowells
Industrial temperature procurement combines the sensor, transmitter, thermowell, process connection and control-system configuration. AMAC reviews head-mount, DIN-rail and field transmitters together with Pt100 RTDs, thermocouples, dual-element sensors and temperature assemblies for Saudi petrochemical, water, power and general manufacturing plants.
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RTD, thermocouple or transmitter: specify each separately
| Device | Application strength | Key limitation / input |
|---|---|---|
| Pt100 / Pt1000 RTD | Good repeatability and accuracy in typical industrial temperature ranges | 2-, 3- or 4-wire wiring and lead resistance; sensor construction |
| Thermocouple (K, J, T, N, S, R, B) | Broad high-temperature/high-response applications depending on type | Correct thermocouple grade, extension cable, polarity and cold-junction compensation |
| Head-mount transmitter | Integrated thermowell/sensor assembly with HART / 4–20 mA output | Mounting head, terminal clearance, ingress and hazardous area |
| DIN-rail transmitter | Panel marshalling cabinets and remote sensors | DIN-rail space, input wiring, isolation and cabinet temperature |
| Thermowell / protection tube | Protects sensor from process and allows selected replacements | Insertion length, bore, alloy, pressure/temp, flange/thread and vibration engineering |
Manufacturer reference for technical RFQs
Rosemount 644: established temperature transmitter family supporting RTD/thermocouple inputs in different head/rail variants and HART/fieldbus configurations. For equivalent models, confirm output, input sensor type, diagnostics, hazardous approval and whether a sensor assembly is required. A transmitter-only quote is not an RTD probe or a thermowell package.
Critical assembly details
- Element: Pt100 IEC 60751 class / thermocouple type and tolerance; single or duplex sensing elements.
- Probe diameter and hot insertion length U, sheath/thermowell material 316SS/Inconel/approved alloy and process connection.
- Operating and maximum temperature, pressure and corrosion/erosion risk.
- Response time, mechanical vibration, orientation and thermowell wake-frequency calculation if required.
- 3-wire vs 4-wire RTD; thermocouple compensation/extension cable material; grounding and shielding.
- 4–20 mA/HART/fieldbus output, power, fault upscale/downscale, display and DCS range.
- End-user calibration, factory inspection and traceability documentation required by project.
Temperature assembly and installation scope
For a complete installation, request instrument assembly drawings, thermowell calculations if specified, insertion nozzle, transmitter head, cable gland, multicore wiring, cable termination, loop check and field temperature verification. A replacement head or sensor must match the existing thermowell bore and connection; never force an incompatible diameter or assume immersion depth is interchangeable.
Application examples
Boiler and steam: high-temperature thermocouple/RTD and suitable protection assembly. Process tanks: Pt100 with local head transmitter and proper insertion. Control panels: rail-mount conversion of RTD/thermocouple into 4–20 mA/fieldbus. Heat exchangers: supply/return temperature pairs with sensor matching and documented accuracy.
Information required for a reliable technical quotation
- RTD Pt100/Pt1000 or thermocouple type, number of sensing elements and class
- Temperature min/normal/max, pressure, corrosion medium and insertion length
- Process thread/flange, thermowell size/design, sheath material, sensor diameter
- Head/rail/field transmitter, outputs, hazardous-area approval and calibration
- Required probe/transmitter/thermowell quantity, tag and model code
- Manufacturer replacement code and site drawing or instrument datasheet
Contact AMAC Saudi Arabia
For an instrument replacement, send the manufacturer name, complete original model and serial number, existing range, process connections and datasheet. For EPC and E&I packages, attach the BOQ, instrument index, P&ID, technical datasheets and approved vendor requirements.
sales@amac-group.com · +966 53 217 2711 · Contact form
Brand/model examples are identification references only, not claims of OEM agency, stock, fixed price, performance guarantee or Saudi end-user approval. Final acceptance depends on selected variant, application and current OEM documents.
Related AMAC technical pages
Pressure instruments · Instrument calibration · Steam flow · Project installation