Guiyang.bai@honno-auto. com
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PFA/PTFE-jacketed insertion Pt100 sensor for corrosive media, –50 to 150 °C, Class A EN 60751, 2/3/4-wire, single/dual/triple element, 50–200 mm insertion, PTFE cable, IP67, 3.5 bar.
The HNT60 is an insertion (plug-in) Pt100 sensor built for corrosive media. A fully fluoropolymer PFA/PTFE jacket isolates the sensing element from acids, alkalis and aggressive fluids; thanks to its structure it also suits steam and high-purity lines, semiconductor wet benches and laboratory use. The cable transition has an anti-bending device. Sensors are generally assembled to DIN EN 60751 Class A; single, dual or triple Pt100 elements and two-, three- and four-wire circuits are available.
The A-grade Pt100 measures temperature through the linear resistance change of the platinum wire; the PFA/PTFE anti-corrosion sleeve keeps the element away from the corrosive medium, and the resistance signal returns over a 2-, 3- or 4-wire circuit. With a PTFE connecting cable, IP67 protection and a 3.5 bar pressure rating, it fits dosing lines, chemical baths, electroplating tanks, water treatment and CIP circuits where a stainless sleeve would corrode.
Good fit: corrosive media temperature measurement, chemical and petrochemical dosing lines, acids, alkalis and aggressive chemical fluids, semiconductor wet-processing and chemical benches, laboratory and R&D, steam and high-purity fluid lines, water treatment and effluent, pharmaceutical and fine-chemical process, electroplating and surface-treatment baths, food and beverage CIP circuits, OEM equipment with aggressive media.
Choose HNT60 when:
The medium is corrosive — acids, alkalis, salts, solvents or aggressive wash fluids — and a stainless-steel sleeve would fail.
Temperature is within –50…150 °C, and the duty is a point insertion measurement in a liquid, bath, line or narrow vessel.
You need a Pt100 resistance signal on 2-, 3- or 4-wire, single/dual/triple element, with PTFE cable and a chosen wire-end connector.
Confirm with us first when: pressure exceeds 3.5 bar, temperature exceeds 150 °C, the medium attacks fluoropolymers (strong oxidizers/hot concentrated acids), or you need a 4–20 mA / HART / Modbus transmitter output (use HNT40).
The protective tube and cable jacket are polytetrafluoroethylene (PFA/PTFE), so wetted parts resist most acids, alkalis and organic solvents. The sleeve isolates the Pt100 element instead of coating a metal probe.
Class A per EN 60751. Choose 1×, 2× or 3× Pt100 with 2-, 3- or 4-wire circuits; the 4-wire version eliminates lead-resistance error, the 3-wire compensates balanced leads, and the 2-wire suits short runs.
Insertion depth 50 / 100 / 150 / 200 mm or custom; cable 300 mm standard, up to 50 000 mm in 500 mm increments; bare ends, ferrules, flat sockets or multi-pin connectors to order.
| Model | HNT60 — Corrosion-resistant insertion Pt100 temperature sensor |
|---|---|
| Measuring range | –50…150 °C |
| Sensing element | Pt100, Class A per EN 60751 |
| Wiring systems | 2-wire, 3-wire, 4-wire; single, dual or triple Pt100 element |
| Protective tube | PFA / PTFE (polytetrafluoroethylene), Ø3.2 / 4.5 / 5 / 6 mm; custom diameter available |
| Connecting cable | PTFE, shielded optional; ambient –50…150 °C |
| Insertion depth | 50 / 100 / 150 / 200 mm; custom length |
| Cable length | 300 mm standard; 300…50 000 mm in 500 mm increments |
| Wire end | Bare ends; ferrule connectors DIN 46228-4; flat socket 6.3 × 0.8 mm DIN 46247; multi-pin connector (type specified on order) |
| Pressure resistance | 3.5 bar |
| Protection rating | IP67 |
| Product safety | CE certification; functional safety complies with IEC 61508, suitable for safety applications per IEC 61511 |
| Anti-bending device | Fitted at the connecting-cable transition |
| Ordering code example | HNT60 – C / A / 4 / L100 / B / 1 |
| Code segment | Code | Description |
|---|---|---|
| Measurement plug | A | 1 × Pt100 three-wire |
| B | 1 × Pt100 two-wire | |
| C | 1 × Pt100 four-wire | |
| D | 2 × Pt100 three-wire | |
| E | 2 × Pt100 two-wire | |
| F | 2 × Pt100 four-wire | |
| G | 3 × Pt100 (one two-wire, two three-wire) | |
| Accuracy class | A | Class A, EN 60751 |
| Protective tube diameter | 3 | Ø3.2 mm |
| 4 | Ø4.5 mm | |
| 5 | Ø5 mm | |
| 6 | Ø6 mm | |
| X | Customized | |
| Insertion depth | L50 | 50 mm |
| L100 | 100 mm | |
| L150 | 150 mm | |
| L200 | 200 mm | |
| X | Customized | |
| Cable end | A | Bare ends |
| B | Ferrule connectors, DIN 46228 Part 4 | |
| C | Flat socket 6.3 × 0.8 mm, DIN 46247 | |
| D | Multi-pin connector (specify type) | |
| Cable length | 1 | 300 mm (standard) |
| 2 | Specify length, 300–50 000 mm, 500 mm increments |
PFA connector sizes and body dimensions (mm) below. Y is the protective-tube diameter; A, B and C are the defined dimension sets for each fitting.
| PFA No. | Size | Y (tube Ø) | A | B | C |
|---|---|---|---|---|---|
| HNT60-F14 | 1/4 | 3.2 | 84.33 | 42.16 | 27.18 |
| HNT60-F38 | 3/8 | 3.2 | 89.41 | 44.70 | 27.18 |
| HNT60-F12 | 1/2 | 3.2 | 95.00 | 47.50 | 27.18 |
| HNT60-F34 | 3/4 | 3.2 | 112.78 | 56.39 | 34.29 |
| HNT60-F1 | 1 | 3.2 | 137.16 | 68.58 | 41.40 |
Insert the sensor so the tip reaches the active temperature zone of the bath or line; keep the insertion depth ≥ 8 × tube diameter where possible. Do not bend the cable near the anti-bending transition. Choose the wire end to match your input: bare ends for direct termination, ferrules for screw terminals, flat sockets or multi-pin connectors for plug-in panels. For long cable runs, prefer the 4-wire circuit to avoid lead-resistance error.
Chemical and dosing: acids, alkalis and aggressive fluid lines and batch tanks.
Semiconductor and laboratory: wet benches, chemical baths, R&D and narrow lab vessels.
Surface treatment: electroplating and surface-treatment bath monitoring.
Water and pharma: effluent, water treatment, fine-chemical and CIP circuits.
OEM aggressive-media equipment: packaged machines where stainless probes corrode.
Send: medium (concentration and composition), process temperature and pressure, vessel/line dimensions and required insertion depth, element count and wiring (2/3/4-wire), cable length, and the wire-end or connector type. We will confirm the PFA/PTFE sleeve suitability and the final order code before quoting.
Which jacket diameters are available?
PFA/PTFE protective tube Ø3.2, Ø4.5, Ø5 and Ø6 mm; other diameters on request.
Which jacket suits strong acids and alkalis?
The PFA/PTFE fully fluoropolymer sleeve resists most acids, alkalis and organic solvents. Send us the exact medium, concentration and temperature so we can confirm compatibility against the 3.5 bar and 150 °C limits.
How does a fluoropolymer-wrapped Pt100 resist corrosion in a chemical bath?
The PFA/PTFE sleeve isolates the Pt100 element from the corrosive medium; only the fluoropolymer wets the fluid, so the platinum element and leads are not exposed to attack.
What insertion depth suits a narrow laboratory vessel?
Depths 50, 100, 150, 200 mm or custom; match the depth to the vessel so the tip sits in the active liquid zone without touching the bottom or wall.
Can four-wire wiring reduce cable resistance error over long distances?
Yes. The 4-wire circuit eliminates lead-resistance error; the 3-wire compensates balanced leads, while the 2-wire carries lead resistance into the reading and is best kept short.
Send us the medium, temperature, pressure and required depth. We will confirm fluoropolymer compatibility, wiring and the order code before we quote.
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Contact: HongNuo
Phone: 13840589744
Tel: 86-13840589744
Email: Guiyang.bai@honno-auto. com
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