ALFACOM ENGINEERING LTD.
Pressure Gauges
Pressure gauges provide local indication of process pressure. Explore dry and liquid-filled gauges, low-pressure and millibar models, diaphragm-seal assemblies and measurement accessories.
Pressure Gauges · ALFACOM catalogue
THE PRODUCT RANGE
Explore the Range
Explore the equipment and selection topics below, then review the detailed catalogue for the selected product.
English selection guidance is provided for each instrument below. Measuring ranges and options are confirmed for the ordered configuration.
115AL Glycerine-Filled Pressure Gauges
All-Stainless-Steel Liquid-Filled Pressure Gauges
111AL Dry Pressure Gauges — Bottom Connection
All-Stainless-Steel Millibar Pressure Gauges
123AL Low-Pressure Gauges — Bottom Connection
Pressure Gauges with Diaphragm Seals
Instrument Accessories
Accessories support instrument installation and protection. The catalogue lists AC001 syphon tubes, AC002 pressure snubbers, AC003 overpressure protectors, AC004 cooling elements, AC005 thermowells and AC006 thread adaptors.
Selection and Configuration
Select the accessory by medium, pressure, temperature, required damping or thermal separation, material and connection. Dimensions, thread standards, ratings and set points depend on the ordered configuration. A gauge protector is not a system safety relief valve.
115AL Glycerine-Filled Pressure Gauges
115AL gauges have stainless steel cases and crimped bezels, polycarbonate windows, brass internal parts and connections, and glycerine filling. The documented bottom-connection versions are 63 mm with 1/4-inch BSPT and 100 mm with 1/2-inch BSPT.
Selection and Configuration
Specify the measuring range, scale units and accuracy for the application. Confirm media compatibility with brass. Glycerine filling does not increase the pressure rating; select temperature and pressure limits for the ordered instrument.
All-Stainless-Steel Liquid-Filled Pressure Gauges
The catalogue describes the 116 family with a 304 stainless steel case and bezel and 316 stainless steel wetted parts and connection. Filling options are glycerine or silicone oil; window options are tempered glass or polycarbonate. The listed ingress protection is IP65.
Selection and Configuration
Confirm the exact variant, dial diameter, connection, orientation, filling and measuring range. Select wetted materials and filling to suit the process and installation conditions. Do not infer the full configuration from the appearance of the case.
111AL Dry Pressure Gauges
111AL dry gauges have black steel cases and bezels, glass windows, and brass internal parts and connections. They have no liquid filling. The documented bottom-connection versions are 63 mm with 1/4-inch BSPT and 100 mm with 1/2-inch BSPT.
Selection and Configuration
The measuring range is selected on request. Provide the pressure range, units and required accuracy, and confirm compatibility of the medium with brass. Include operating conditions and installation details when selecting a replacement.
All-Stainless-Steel Millibar Gauges
These capsule low-pressure gauges have stainless steel cases, wetted parts and connections. The measuring range is specified in mbar on request; dial size, connection and orientation are configured to order.
Selection and Configuration
The catalogue identifies the 123AU family as an example with a back connection. Confirm the delivered model, material grade, pressure range and connection for the order. A millibar gauge must be selected for the actual low-pressure duty rather than a general high-pressure application.
123AL Low-Pressure Gauges
123AL bottom-connection gauges use a capsule measuring element, black steel case and bezel, glass window, and brass internal parts and connection. The documented versions are 63 mm with 1/4-inch BSPT and 100 mm with 1/2-inch BSPT.
Selection and Configuration
The catalogue specifies dry gases compatible with copper alloys. Define the measuring range and units before ordering. Confirm service conditions and the selected gauge's suitability; do not assume liquid-service compatibility from the connection size.
Pressure Gauges with Diaphragm Seals
A diaphragm-seal assembly combines a pressure gauge with a separating diaphragm. The body and diaphragm materials, filling fluid, process connection, pressure range and temperature suitability are selected for the complete assembly.
Selection and Configuration
Provide the medium, operating and maximum pressure, temperature, process connection, diaphragm-material requirements and gauge orientation. Dimensions and ratings are confirmed for the selected assembly. Select and assess the gauge and seal together.
APPLICATION BEFORE SPECIFICATION
Selection Starts with Your Application
Specify the pressure range and units, process fluid and temperature, required accuracy, dial size, connection size and orientation, and vibration or pulsation conditions. Confirm wetted-material compatibility and whether a diaphragm seal or other protection is required.
Catalogue & Technical Documents
Review the model-specific technical information and installation requirements. Send a specification, drawing or existing model reference if you need help selecting equipment.
Discuss Your Application
Send your requirements or a photo of the existing equipment for technical assistance and a quotation.
Availability and lead time are confirmed for the requested model and quantity.