A completely self-contained SAFT testing unit with positions for testing six specimens at one time, ramp and soak capabilities to 400°C (750°F). The ramp rate is adjustable from 60°C (100°F)/hr (1°C (1.8°F)/min) to 650°C (1200°F/hr) (11°C (20°F)/min). Test set-up is intuitive and can be performed in minutes by means of a touch-screen interface. Plugs into an ordinary 120V/15A electrical outlet; may be located almost anywhere.
Standards - The unit is suitable for performing all standard specimen-to-metal high-temperature holding-power and shear-adhesion failure temperature (SAFT) tests, i.e. MIL I-23594C, PSTC-107, Procedure G, PSTC 17, ASTM D 3654, and International Harmonized Test Method - Afera Test Method 5013 (GTF 6001).
Unique Technology - The unit does not immerse the test panel, specimen, test weight, and supporting device in an oven, as described in the standards listed, but rather heats the metal test panel directly by conduction from a heated platen upon which the panel is mounted. As compared with conventional practice, the heated-panel technique offers a number of advantages:
Size - The unit is approximately 60cm (24in) wide, 30cm (12in) deep, 37cm (14,5in) high, and weighs approximately 20kg (45lb). The special test panels used are 51mm (2in) wide, 51mm (2in) high, and are punched for attachment to the heated platen.
Description – The SAFT unit proper is constructed of type-304 stainless steel sheet of various thicknesses, and the control enclosure of 1/8th inch aluminum. The heating platen is copper and the assembly mounting it is made of aluminum, non-asbestos insulation board, and stainless steel. The platen is heated with a single 1000 watt split-sheath cartridge heater. The test panels are individually attached to the heating platen by means of brass nuts on 10-24 stainless steel studs set in the platen.
The platen assembly is supported by 0.5 inch diameter steel stub shafts turning in bronze sleeve bearings. The assembly will rotate through 95 degrees, with the platen face vertical in the 0 degree position, negatively inclined in the -5° position, and horizontal (facing downward) in the 90 degree position. It is rotated by means of a lever attached to the right-hand end of the shaft. The lever is locked in place by a screw clamp. If desired, the platen assembly may be rotated while a test is in progress.
A falling test weight resulting from the failure of a specimen is signaled by the closing of a lever-operated switch, actuated when the weight falls on a foam-padded treadle at the bottom of a box that confines the weight as it falls and prevents interference with other weights should it fall in a non-vertical orientation. The front of the box is cut away to allow easy retrieval of fallen weights. There are individual boxes for each test position.
Controls and Displays – The platen maximum-temperature, ramp-rate settings, and all operating functions are managed by an embedded controller designed specifically for this unit. Test parameters are input and data outputs displayed by means of a graphical user interface presented using a 11cm/4.3in touch-screen display. No external computer is required. Temperature sensing is by type K thermocouple. The ramp rate is adjustable from a minimum of 60°C (100°F)/hr. (1°C (1.8°F)/min to 650°C (1200°F/hr) (11°C (20°F)/min).. The maximum-temperature setting is 400°C/750°F.
A test commences when the operator touches a start button displayed on the touch screen. The platen temperature, test duration, and condition (hold/fail) of each of the six specimens is continuously displayed. At the completion of the test the shear adhesion failure temperature and the time of failure, or if there is no failure, the time the specimen has held at the maximum temperature, continues to be displayed for each specimen until reset manually. For isothermal shear-adhesion failure-time (ISAFT) determinations, the timer for each test position can be reset to zero independently of the other positions, allowing a new test to be commenced in a position at which a previous specimen has failed while the tests at other positions continue uninterrupted. The maximum length of an ISAFT test is 10000 minutes/7 days. A copy of the complete Model 2HP operators' manual may be downloaded below.
Electrical Requirement – 110-120V, 10A (A 220-240V unit is available on special order, at small additional cost. Please request a quote.)
Accessories Furnished – The following accessories are supplied with the unit. An enlarged image of the complete kit to be furnished is shown below.
1. Test panels, type 304 mirror-finish stainless steel, 51mm/2 in. x 51mm/2in. (12)
2. Test weights, 500g (6)
3. Stainless-steel coat-hanger hooks for attaching test weights to specimens (6)
4. Long-shaft 5/16" nut driver
5. Operating instructions
Warranty - The instrument supplied is warranted to be essentially as described here. Components or systems that fail or are discovered to be defective within one year from the date of delivery will be repaired or replaced at our expense.
Purchasing Information - We will accept purchase orders for this item and accessories ordered with it from customers meeting acceptable criteria for credit worthiness. Please contact us for a quote and a credit application.
Standards - The unit is suitable for performing all standard specimen-to-metal high-temperature holding-power and shear-adhesion failure temperature (SAFT) tests, i.e. MIL I-23594C, PSTC-107, Procedure G, PSTC 17, ASTM D 3654, and International Harmonized Test Method - Afera Test Method 5013 (GTF 6001).
Unique Technology - The unit does not immerse the test panel, specimen, test weight, and supporting device in an oven, as described in the standards listed, but rather heats the metal test panel directly by conduction from a heated platen upon which the panel is mounted. As compared with conventional practice, the heated-panel technique offers a number of advantages:
- Exceptionally high temperatures are available. – Tests may be conducted at temperatures to 400°C (750°F), providing unique capability to investigate the performance of silicone adhesives and high-temperature acrylic adhesives in the extreme upper ranges of their operating environments.
- The failure temperature determination is precise. It is the actual panel temperature, not the oven air temperature.
- Minimal demands on laboratory facilities – The unit requires only 24 inches x 12 inches of bench space and plugs into an ordinary 120V/15A electrical outlet, allowing it to be located almost anywhere.
- Energy efficiency – Even at the maximum ramp rate, the unit consumes less electricity than many kitchen-countertop appliances.
- Oven availability – An additional oven need not be purchased and existing-oven availability will not be restricted.
- Reduced frustration – Complicated and confusing oven-controller programming is not required. The procedure for setting the test temperature and temperature-ramp rate using the touch-screen interface is intuitive and may be accomplished in a few minutes.
- The behavior of the specimens may be observed at close hand throughout the test, unobscured by dirty windows or poor lighting, and clearly recorded in photos or video.
Size - The unit is approximately 60cm (24in) wide, 30cm (12in) deep, 37cm (14,5in) high, and weighs approximately 20kg (45lb). The special test panels used are 51mm (2in) wide, 51mm (2in) high, and are punched for attachment to the heated platen.
Description – The SAFT unit proper is constructed of type-304 stainless steel sheet of various thicknesses, and the control enclosure of 1/8th inch aluminum. The heating platen is copper and the assembly mounting it is made of aluminum, non-asbestos insulation board, and stainless steel. The platen is heated with a single 1000 watt split-sheath cartridge heater. The test panels are individually attached to the heating platen by means of brass nuts on 10-24 stainless steel studs set in the platen.
The platen assembly is supported by 0.5 inch diameter steel stub shafts turning in bronze sleeve bearings. The assembly will rotate through 95 degrees, with the platen face vertical in the 0 degree position, negatively inclined in the -5° position, and horizontal (facing downward) in the 90 degree position. It is rotated by means of a lever attached to the right-hand end of the shaft. The lever is locked in place by a screw clamp. If desired, the platen assembly may be rotated while a test is in progress.
A falling test weight resulting from the failure of a specimen is signaled by the closing of a lever-operated switch, actuated when the weight falls on a foam-padded treadle at the bottom of a box that confines the weight as it falls and prevents interference with other weights should it fall in a non-vertical orientation. The front of the box is cut away to allow easy retrieval of fallen weights. There are individual boxes for each test position.
Controls and Displays – The platen maximum-temperature, ramp-rate settings, and all operating functions are managed by an embedded controller designed specifically for this unit. Test parameters are input and data outputs displayed by means of a graphical user interface presented using a 11cm/4.3in touch-screen display. No external computer is required. Temperature sensing is by type K thermocouple. The ramp rate is adjustable from a minimum of 60°C (100°F)/hr. (1°C (1.8°F)/min to 650°C (1200°F/hr) (11°C (20°F)/min).. The maximum-temperature setting is 400°C/750°F.
A test commences when the operator touches a start button displayed on the touch screen. The platen temperature, test duration, and condition (hold/fail) of each of the six specimens is continuously displayed. At the completion of the test the shear adhesion failure temperature and the time of failure, or if there is no failure, the time the specimen has held at the maximum temperature, continues to be displayed for each specimen until reset manually. For isothermal shear-adhesion failure-time (ISAFT) determinations, the timer for each test position can be reset to zero independently of the other positions, allowing a new test to be commenced in a position at which a previous specimen has failed while the tests at other positions continue uninterrupted. The maximum length of an ISAFT test is 10000 minutes/7 days. A copy of the complete Model 2HP operators' manual may be downloaded below.
Electrical Requirement – 110-120V, 10A (A 220-240V unit is available on special order, at small additional cost. Please request a quote.)
Accessories Furnished – The following accessories are supplied with the unit. An enlarged image of the complete kit to be furnished is shown below.
1. Test panels, type 304 mirror-finish stainless steel, 51mm/2 in. x 51mm/2in. (12)
2. Test weights, 500g (6)
3. Stainless-steel coat-hanger hooks for attaching test weights to specimens (6)
4. Long-shaft 5/16" nut driver
5. Operating instructions
Warranty - The instrument supplied is warranted to be essentially as described here. Components or systems that fail or are discovered to be defective within one year from the date of delivery will be repaired or replaced at our expense.
Purchasing Information - We will accept purchase orders for this item and accessories ordered with it from customers meeting acceptable criteria for credit worthiness. Please contact us for a quote and a credit application.
| operators_manual_model_2hp_saft_tester_-__march-2021.pdf |
Shear Adhesion Failure Temperature (SAFT) tester-400°C/700°F capability-Keeselab Model 2HP