NG # 04014-HW-KELLER-036
The KELLER Series 9FL is a compact, piezoresistive OEM pressure transducer capsule featuring a $\varnothing 17\text{ mm}$ front-flush design. Designed as a low-profile, robust sensor cell, the Series 9FL combines a front-flush laser-welded metallic diaphragm with KELLER's chip-in-oil technology. The front-flush isolation diaphragm eliminates gaps and dead volumes, making it resistant to crevice corrosion and preventing media buildup or crystallization.
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Custom Pricing
Get A QuoteThe pressure transducers of the 9FL series have a compact, robust housing made of stainless steel, giving them outstanding long-term stability for a range of OEM applications. The metal diaphragm is welded on front-flush and gap-free, separating off the piezoresistive pressure sensor, which is made of silicon, from the measuring medium. Every pressure transducer is measured over the entire pressure and temperature profile and is supplied with a detailed calibration sheet.
| Parameter | Specification |
| Pressure Ranges | $0\text{--}0.2\text{ bar}$ up to $0\text{--}200\text{ bar}$ |
| Pressure Reference | Relative / Vented Gauge (PR), Absolute (PAA), Sealed Gauge (PA) |
| Accuracy / Linearity | $\pm 0.25\%\ \text{FS}$ typical (BFSL) |
| Long-Term Stability | $\pm 0.2\%\ \text{FS / year}$ |
| Operating Temperature | $-40^\circ\text{C}$ to $+125^\circ\text{C}$ |
| Compensated Temp. Range | $-10^\circ\text{C}$ to $+80^\circ\text{C}$ (Standard options available) |
| Excitation / Supply | $1.0\text{ mA}$ nominal constant current ($0.5\text{--}5\text{ mA}$ operating range) |
| Bridge Resistance | $3.5\text{ k}\Omega \pm 20\%$ at $20^\circ\text{C}$ |
| Dimensions | $\varnothing 17.0\text{ mm} \times 5.5\text{ mm}$ |
| Wetted Materials | Stainless Steel AISI 316L (1.4435) / Optional Hastelloy C-276 |
| Oil Filling | Silicone Oil (Standard) / Optional Fomblin or Olive Oil for special applications |
| Electrical Connections | Gold-plated glass feedthrough pins or silicone insulated wire leads |
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