Gurley Alabama

Since 1923, Gurley Densometers have been the industry standard for testing the porosity and smoothness of paper, paperboard and other flat-sheet materials. With the introduction of the Model 4340 Automatic Densometer, Gurley continues this tradition by combining the abilities of our textile, standard and high pressure Densometers, S-P-S Testers as well as our programmable digital timers and provides a reading in seconds, thus reducing the time required to test a material. At Gurley, we are committed to serving the needs of the industry.

Applications include:

In manufacturing and printing, to control the selection of materials affording the appropriate degree of liquid (ink, varnish, sizing) absorption. Testing filters, porous bags & materials where controlled porosity is essential. Testing insulating materials for air resistance. As a supplement to other physical tests enabling regulation or strength of manufacturing process to give the desired formation, appearance or strength since there is a close correlation in a given material between air permeability and these other properties.

Requirements

In order for the Model 4340 Automatic Densometer to work properly, one needs the following:

'Shop-air' or an air-compressor with a minimum of 60 PSI output. A filter/regulator/desiccant combo which cleans, controls and dries the air so not to damage the instrument (made available by Gurley.) 110 or 220 VAC power source (Note: A universal power supply is standard in every Model 4340.)

Options

Compressor and air filter/regulator/dryer combo Printer, dot matrix, roll feed Interchangeable orifices (1.0 standard, 0.25 and 0.10 sq in optional)

Specifications

Dimensions: 15.75" long x 12.5" high x 9.25" wide Weight: 28.7# (13.0 kg) Internal power supply (110-220 VAC) Requires at least 60 PSI

The Gurley Model 4301 Permeometer measures the porosity or air-permeability of materials where air flow is an important characteristic relative to their use. These materials might be non-woven or woven textiles, filter and cloth felts, some types of blotting, saturating and absorbent bag papers as well as meshes. Conform to TAPPI T-251, ASTM D-737, DATM 70.0-70 and ISO 5636/1.

Specifications

The Gurley Model 4301 Permeometer measures the porosity or air permeability of materials where air flow is an important characteristic relative to their use. These materials might be non-woven or woven textiles, filter and tissue papers, facial tissues, paper and cloth felts, some types of blotting, saturating and absorbent bag papers as well as wire meshes. The Permeometer is the standard instrument for measuring high levels of air-permeability or air-resistance as recommended in various test methods published by ASTM, TAPPI and ASA. Its unit of measurement is cubic feet of air per minute per square foot at 0.5 inches of water pressure drop. The Gurley Model 4301 is used throughout the textile and general manufacturing industries and is considered the instrument of choice due to its simplicity of loading samples, ease of use, portability and life expectancy in comparison to competitive models. Its procedure is non-destructive and its design allows the testing of long samples, up to six inches in from any edge.

Applications

To determine ability for material to pass air as a primary user requirement (such as parachute cloth or vacuum cleaner bags). To evaluate materials used as filters. Aid in determining coolness or warmth (as insulation values) in clothing. To predict probable coating penetration. To measure retention of filters, sizing or scratch after laundering or use. To aid in prediction of water-resistant properties. To measure the effect of treatments on porosity, density, nap or other material properties. Allows fast & easy quantitative measurement of variables in production not detectable by appearance or other methods. a non-destructive test to accurately delineate & quantify differences in materials and treatments.

FEATURES :

Quick & easy sample loading Rapid test cycle Excessive clamping pressure unnecessary Portable & rugged design Complies with TAPPI, ASTM, & ASA standards

Model 4110N

The most popular Densitometer sold for measuring porosity and air permeability in materials of average values. With options such as smaller orifice plates, materials of lower permeability may be effectively tested. By using a 5 oz. cylinder, materials of a higher permeability can be tested (Model 4118).
The Model 4110 includes a 20 oz. cylinder and 1.0 square inch orifice lower clamp plate and upper adapter. The 20 oz. cylinder is graduated to 25cc for the first two spaces and 50cc for each space thereafter, for a total of 300cc. Typical of all new-style densometers, clamping pressure is supplied by turning a knob which raises and locks the lower lifting assembly and clamp plate. Both the automatic timer and instrument base are recommended with these densometers and are ordered separately.


Model 4118N

The Model 4118 is a Model 4110 with a 5 oz. cylinder in place of the 20 oz. inner cylinder and 0.1 sq. in. clamp and adapter plates instead of the 1.0. It is used to test fabrics and other more permeable materials for porosity, permeability and air-resistance.

In cases where the sample being tested is still too porous for an accurate reading, the Model 4301 Permeometer would be recommended.

Model 4140N

This model is identical in function to No. 4110 and includes the weighted arm assembly found on No. 4190. Uniform dead-weight clamping pressure for tests is supplied by the unweighted lever arm or by the addition of either 0.34 lb. (optional) or 2.0 lb. (standard) weights. These combinations produce clamping pressures of 3.2 psi, 9.6 psi and 40.5 psi respectively.

Model 4190N

The No. 4190 was originally developed to test the printing quality of paper. In more recent years, its use has spread to other industries in testing or checking other material surfaces for smoothness, softness or porosity. In dealing with the printability of paper, it has been found that smoothness is the most important factor in printing quality and softness is usually secondary.

The Gurley No. 4190 S-P-S Tester measures a given air flow through the sample for porosity tests and leakage across its surface(s) for softness or smoothness tests. This is accomplished by changing a variety of adapter and clamping plates. This model is identical to the No. 4110 and 4140 for porosity tests and their components. Additionally, it includes a 0.34 lb. weight, smoothness test clamping plate, softness test clamping plate, punch and accessory storage box. Both the automatic digital timer and instrument base are recommended and should be ordered separately.

Model 4320DN

The Model 4320 Programmable Digital Timer is designed specifically for all Gurley Densometers and High Pressure models. The Model 4320 not only increases the accuracy and productivity of these instruments, but provides recording and computing capabilities that will absolutely minimize the possibility of operator error. Both RS-232 and Centronics output to a variety of devices, including most printers and PC's. Other Model 4320DN features include: