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Keller Series 7L Miniature OEM Pressure Transducer

Keller Series 7L Miniature OEM Pressure Transducer

Quick Overview

The 7L Series are miniature pressure transducer with a robust stainless steel housing for optimum long-term stability for a wide range of OEM applications. The transducers includes a robust and corrosion-resistant front-flush crevice-free welded diaphragm and a piezoresistive pressure sensor, which is made from Silicon, separated from the measured medium. Transducers are available with Stainless Steel, or Titanium for operating pressures up to 200 Bar and temperature for up to 125°C. Low power consumption: 1mA (Max 3mA) and typical output signal range of 160mV/mA. Transducers supplied with calibration sheet.
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The series 7L is a new generation of OEM pressure transducers from Keller that feature a smaller capsule with a crevice-free laser welded diaphragm. Each cell undergoes extenxive automated testing and is supplied with calibration data, which includes sensitivity, linearity, initial zero offset and thermal effects over the compensated temperature range.

The Series 7L OEM cells feature floating O-ring mounting to avoid errors caused by mechanical stress that ensures performance within the specifications. The housing encases the piezoresistive silicon presure sensor and a small quantity of oil that efficiently transfers the pressure exerted on the diaphragm to the silicon pressure sensor. Standard cells include Silicone oil AK100, but other oils can be use for specific applications. For example, Galden HT270oil is available for low pressure Oxygen applications, Fomblin M100 for Oxygen applications to 330 Bar.


  • High long-term stability
  • Robust housings made from Stainless Steel, Hastelloy or Titanium
  • Front-flush, crevice-free welded diaphragm
  • Optimised thermal behaviour


Pressure Range Burst Pressure Sensitivity (mV/(mA x Bar)
PA PAA Min Typical Max
0 to 100 Bar 250 Bar 1.20 1.60 2.00
0 to 160 Bar 400 Bar 0.75 1.00 1.25
0 to 250 Bar 625 Bar 0.48 0.64 0.80
0 to 400 Bar 1,000 Bar 0.30 0.40 0.50
0 to 600 Bar 1,500 Bar 0.20 0.267 0.333
0 to 1,000 Bar 2,200 Bar 0.12 0.16 0.20
0 to 1,600 Bar 2,200 Bar 0.075 0.10 0.125
0 to 2,000 Bar 2,200 Bar 0.075 0.10 0.125


Series 7L Cell Diagram

Series 7L Pin-Out Diagram

Customer Specific Options

  • Custom Pressure Ranges
  • Custom Temperature Ranges between -40 and +125°C
  • Custom Mathematical Modelling
  • Electrical Connection with Silicone Wires
  • Housing and diaphragm made of Hastelloy C-276 or Titanium
  • O-Rings made of Other Materials
  • Other Oil Filling type for Pressure Transducers: eg. Special Oils for Oxygen Applications.
  • Modifications to Customer Specific Applications

Availability: In stock

Price range : £110.00 - £360.00

Price as configured: £110.00

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Price as configured: £110.00


Part Builder

Description       Series 7L Piezoresistive OEM Pressure Transducers. 316L Stainless Steel wetted materials and Silicone AK100 Oil unless alternatives selected.

Components / Downloads

For further information, technical advice, or a quotation please call or email us. If you are not sure which product you need one of our technical sales advisors will be happy to discuss your application. We also accept company purchase orders by fax or post. Credit card orders can also be placed over the phone for any product.

Series 7L Miniature Pressure Transducer
Series 7L Miniature Pressure Transducer
Series 7, miniature pressure transducer, absolute. Ranges up to 200 Bar, operating temperatures up to 80°C, low power consumption , 2-4mA. Up to 600mV output at 4mA excitation.
View FileDatasheet
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