Features & Benefits
- Product applications
Oil & Gas, Petrochemical, Power, Food, Sanitary and Paper applications - Diaphragm seals are suitable for use in:
Corrosive atmospheres. Resistant to chemical attack.
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Complete range of diaphragm seals for application on all our pressure and differential pressure instruments.

The D31 SMART Differential Pressure Transmitters are suitable for measuring differential pressure of gases, vapours and liquids. The active sensing element is a piezoresistive silicon sensor separated from the medium by a diaphragm and by a specially selected type of manometric liquid. The special design of the active sensing element ensures that it is able to withstand pressure surges and overloads of up to 250/320/413 bar. The casing is made of cast aluminium alloy or 316 stainless steel with a IP66/IP67 rating. The design of the casing enables the use of a local display, rotation of the display by 90°, rotation of the casing by 0–355° relative to the sensor, and a choice of cable direction.
The D31 Differential Pressure Transmitter is suitable for measuring pressures from -100mbar to 70bar with maximum working pressures up to 413 bar.
Key Features
• Die cast weatherproof enclosure to IP66 (NEMA 4).
• Stainless steel mechanism.
• Internal tamperproof set point adjustment.
• Calibrated scale.
• Set point adjustment from -2.5mbar (-1 in H2O) up to 1.6 bar (20psi) dependent on model.
• ECAS Certified (Emirates Conformity Assessment Scheme)

Initially designed in the mid-70s and developed over subsequent years. the Performance Series range of pressure switches offers the broadest range of options, the highest levels of set-point repeatability all combined with the long-term performance and confidence of a well-established product.
Performance Series models 201/202/203/281 utilise a bellows type sensor that offers a very linear response to pressure change. This sensor, coupled with a precision stainless steel mechanism, designed to minimise friction in the moving parts, helps deliver the market leading performance customers have come to expect from the series.
This range of pressure switches has been most successful in industries which may have corrosive atmospheres or need products that are resistant to chemical attack, such as the Oil and Gas, Chemical, Petrochemical, Power and Food.
The 201 Presure Switch is suitable for setpoints between -1bar and 75bar with maximum working pressures up to 100bar. Available in models 202, 203 and 281 (EAC certification is available on request).
Features:

The Delta Mobrey Industrial Series was initially created in the mid 1990’s. Since that time the range has undergone product developments to ensure we continue to provide industries with a range of instrumentation dedicated to providing fundamental intelligence within their environment. This range uses diaphragm based sensors and an in-line force balance mechanism to transfer movement from the sensor to the microswitch. All versions of the Industrial Pressure Switch models, S20, S21, and S24, are suitable for a wide range of industrial applications, especially alarm style applications.
The S20 Pressure Switch is suitable for setpoints between -1bar and 100 bar with maximum working pressures up to 155 bar. Available in models S21, S22 and S24 (EAC certification is available on request).
Key Features

Initially launched in the mid-1990s, the Compact Series of pressure switches has continuously been providing users with a compact, robust and hermetically sealed switch for use in Safe and Hazardous Areas. This pressure switch comes with flying leads or junction box fixings.
Compact switch range designed for installing in tight spaces such as those found in panel applications. (EAC certification is available on request).
Key Features
