GF Signet 2350 Temperature Sensor

Fits in-line or submersible temperature measurement in PVDF-compatible media where you need a Pt1000 tip, dual ¾ in. NPT threads, and either digital S3L or field-scaleable 4–20 mA output.

Key advantages

• Pt1000 extended tip — ±0.5 °C accuracy (±0.9 °F); repeatability ±0.1 °C.
• Dual output family — Digital S3L (5–6.5 VDC) or field-scaleable 4–20 mA (12–24 VDC).
• Dual-threaded body — ¾ in. NPT male on sensing and cable ends for in-line or submersible installs.
• Published approvals — CE, UKCA, FCC, FM as listed for ordered configurations.

Typical applications

• Chemical and water-treatment lines using PVDF-compatible sensors.
• Tank or sump submersion where a dual-threaded PVDF body is preferred.
• Signet/S3L instrument buses that need a digital temperature input.

Selection guide

• Measuring range — Operating −10…100 °C in-line (−10 °C @ 16 bar to 100 °C @ 7.5 bar); 4–20 mA span factory 0…100 °C; submersible Fahrenheit column lists to 185 °F (85 °C). Lock range to the T/P rating table, not just the alarm set point.
• Sensor — Pt1000 platinum RTD in extended tip.
• Accuracy — ±0.5 °C (±0.9 °F); repeatability ±0.1 °C.
• Output — Digital S3L (serial ASCII TTL 9600 bps) or field-scaleable 4–20 mA. Confirm host (Signet instrument vs PLC analogue).
• Supply — S3L: 5–6.5 VDC ±10%, <1.5 mA; 4–20 mA: 12–24 VDC ±10% regulated.
• Process connection — ¾ in. NPT male (sensing end and cable end; dual-threaded).
• Sheath / housing — PVDF sensor housing (one-piece injection molded).
• Response time — 10 seconds (datasheet Response Time).

Common mistakes

• Ordering the 4–20 mA version when the panel expects Signet S3L (or the reverse) — output is a model choice, not a field swap.
• Ignoring the in-line T/P derate (−10 °C @ 16 bar to 100 °C @ 7.5 bar) and overstating pressure at high temperature.
• Specifying metal-sheath immersion probes when the duty needs the PVDF one-piece body for chemical compatibility.
• Undersizing cable run: integral 4.6 m (15 ft), extendable to 121 m (400 ft) — state required length in the RFQ.
• Treating the submersible °C and °F columns as identical; the datasheet columns disagree — pick the mounting mode and confirm the limit.

When to RFQ / what to tell us

1. Output needed: S3L vs field-scaleable 4–20 mA, and required span / units.
2. Media chemistry (must suit PVDF), process temperature, and pressure (check T/P table).
3. Mounting: in-line or submersible; adapter kit for Signet 9900 yes/no.
4. Cable length needed (stock 4.6 m / 15 ft; extend to 121 m / 400 ft).
5. Supply available (S3L 5–6.5 VDC vs 4–20 mA 12–24 VDC), required marks (CE, UKCA, FCC, FM), quantity, ship-to country.

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Specs

Documents

• GF Signet 2350 datasheet (PDF)

FAQ

Q: S3L or 4–20 mA — which output do I order? A: Match the host. S3L is Signet digital (5–6.5 VDC); 4–20 mA is field-scaleable on 12–24 VDC. State the instrument or PLC input in the RFQ.

Q: Can I run above 100 °C or high pressure at the same time? A: In-line operating range is −10…100 °C with a T/P derate (−10 °C @ 16 bar to 100 °C @ 7.5 bar). Confirm both temperature and pressure against the datasheet table.

Q: Is IP rating published for this SKU? A: The product JSON / OEM documentation used here does not list a separate IP rating. If ingress rating is critical, ask on the RFQ before ordering.

Q: What should I send for a quote? A: Output type, media and T/P, mounting mode, cable length, supply, required marks, quantity. Compatible with systems using GF Signet 2350 if you need a drop-in check — we do not claim authorized-dealer status.

Links

• Temperature instruments · Temperature buying guide
• Request a Quote · Get selection help