MATEST - E142 - Digital Pull - Off (Bond) Strength Tester

A digital pull-off strength tester, also known as a digital pull-off adhesion tester, is a specialized instrument used to measure the tensile strength or adhesion of a coating, a layer of material, or a repair to its substrate. It is a portable, hand-operated device that applies a perpendicular pulling force to a prepared surface and displays the force required to detach it on a digital screen.

A pull-off test measures the tensile bond strength between a material and its substrate. It determines how much force (in N or MPa) is required to detach or "pull off" a disc glued to the surface.

MATEST - E142 - Digital Pull - Off (Bond) Strength Tester

The fundamental principle is the "pull-off" or "dolly" test. Here's a general breakdown of the process :

Preparation : A small, circular "dolly" (typically made of aluminum) is securely adhered to the surface of the coating or material being tested. The surface must be clean and free of contaminants to ensure a strong bond with the adhesive. In some cases, a core may be drilled around the dolly to isolate the test area, especially on materials like concrete or mortar.

Curing : The adhesive is allowed to cure fully, creating a strong bond between the dolly and the surface.

Attachment : The tester is attached to the dolly. Many testers have a self-aligning feature to ensure the pulling force is applied at a perfect 90-degree angle to the surface, which is crucial for accurate results.

Testing : The operator gradually applies a pulling force, often by rotating a hand wheel or using a hydraulic pump. The instrument's internal load cell measures the force being applied.

Failure and Measurement : The force is increased until the adhesion fails, and the dolly pulls off the surface. The tester's digital display records and holds the maximum force value at the moment of failure.

Analysis : The recorded force value, along with the size of the dolly, is used to calculate the pull-off strength, which is typically expressed in pressure units like MPa (megapascals) or psi (pounds per square inch). The weakest point of the system (dolly, adhesive, coating layers, or substrate) will be where the fracture occurs.

MATEST - E142 - Digital Pull - Off (Bond) Strength Tester

Digital pull-off strength testers offer several advantages over their manual counterparts :

• Accuracy and Resolution : The digital display provides a precise and high-resolution reading of the applied force.
• Data Storage : Many models have internal memory to store test data, including maximum pressure, pull rate, test duration, and dolly size, which can be easily transferred to a PC for analysis and reporting.
• Automatic Calculation : They eliminate the need for manual calculations, as the device automatically computes the pull-off strength based on the selected dolly size.
• User-Friendly Interface : With a simple button interface, operators can quickly select dolly sizes, change measurement units, and save readings.
• Portability : They are typically lightweight, battery-operated, and designed for use in the field or the laboratory.
• Compliance with Standards : These testers are designed to comply with international standards such as ASTM D4541, ISO 4624, and others, ensuring reliable and comparable test results.

MATEST - E142 - Digital Pull - Off (Bond) Strength Tester

Digital pull-off strength testers are widely used in various industries, including:

Construction : To test the bond strength of concrete repairs, mortars, plasters, and tile adhesives.

Protective Coatings : To assess the adhesion of paint, epoxy, and anti-corrosion coatings on metal, wood, and other substrates.

Materials Testing : For evaluating the bond strength of laminates, adhesives, and other materials in quality control and research and development.

MATEST (E142) Digital Pull - Off (Bond) Strength Tester Specification
Model / Kapasitas	E142 - 16 kN ; Varian E142‑01 - 5 kN (untuk pengukuran strength bond yang lebih rendah)
Standard Method	EN 1542, EN 1015‑12, EN 13687‑2, EN 13963, EN 14496, EN 1348, EN 12004‑2, NF P18‑858, BS 1881‑207, ISO 4624
Resolusi	10 N
Working Range	0.25 hingga 16.00 kN (untuk model 16 kN)
Akurasi dan Repeatabilitas	Lebih baik dari ± 1 % untuk seluruh rentang pengukuran
Daya & Operasi	Beroperasi dengan baterai ; port serial untuk sambungan ke PC
Mekanisme Beban	Gaya tarik diterapkan dengan memutar hand‑wheel ; terdapat grafik besaran laju beban yang diaplikasikan
Fitur Kaki Penyangga	Trilogi kaki yang bisa diatur ke posisi lebar (Ø 176 mm) untuk stabilitas tinggi, atau posisi kompak (Ø 92,5 mm) untuk ruang sempit / samping‑menyamping
Prinsip Penjajaran Beban	Dengan ball seat (seat ball) agar gaya diterapkan secara aksial / pusat (mengurangi momen samping)
Dimensi & Berat	Sekitar 410 × 210 × 270 mm ; berat = 5,5 kg
Fitur Tambahan	Sertifikat kalibrasi yang traceable  Dial pad digital besar dengan tampilan grafis laju beban  Mekanisme hitung putaran hand‑wheel (60 putaran) dengan counter mekanik
Aksesori Tidak Termasuk (optional)	Dolies / discs, bor / bit, lem / epoxy untuk pengikatan, dan alat pelengkap lainnya harus dipesan secara terpisah

MATEST - E142 - Digital Pull - Off (Bond) Strength Tester

MATEST (E142-01) Digital Pull - Off (Bond) Strength Tester Specification
Model / Kapasitas	E142‑01 — kapasitas beban tarik hingga 5 kN
Standard Method	EN 1542; EN 1348; EN 1015‑12; EN 13687‑2; EN 13963; EN 14496; EN 12004‑2; ISO 4624
Resolusi & Jangkauan Pengukuran	Rentang ukur 0 sampai 5 kN (untuk nilai kecil), dengan resolusi / ketelitian yang tinggi pada rentang bawah (lebih detail dibanding versi 16 kN)
Kesamaan Fitur dengan E142‑16	Fitur‑fitur seperti load cell digital display, kaki‑penyangga yang dapat diatur, indikasi grafis laju beban, pengoperasian dengan hand‑wheel, dengan counter mekanik, sertifikat kalibrasi traceable, dan koneksi ke PC sama seperti model E142 16 kN
Akurasi & Repeatabilitas	Lebih baik dari ± 1 % sepanjang rentang pengukuran (termasuk pada beban rendah), pengulangan (repeatability) tinggi
Penyajian Beban & Mekanisme	Beban tarik diaplikasikan dengan memutar hand‑wheel ; terdapat indikasi grafis untuk laju beban. Display digital untuk pembacaan kuat tarik.
Catu Daya & Konektivitas	Operasi memakai baterai ; tersedia port serial / antarmuka untuk PC guna pencatatan data / eksport hasil pengujian
Desain Fisik	Kompak dan portabel; kaki penyangga yang adjustable agar bisa digunakan pada permukaan yang tidak rata ; ideal juga untuk penggunaan di lapangan atau lokasi sulit dijangkau.
Aksesori	Tidak termasuk dis‑dollies (disk / plank pengujinya), bor / mata bor untuk persiapan permukaan, lem / epoxy pengikat, software E142‑10 adalah aksesori opsional; semua aksesori uji harus dipesan terpisah

The pull-off / bond strength test is a widely used method to measure how well a material adheres to a substrate — for example, testing the adhesion strength of :

Paints & coatings on metal/concrete
Tiles bonded to floors/walls
Concrete repair mortars
Cement-based overlays
Waterproofing layers
Epoxies or adhesives

PT. Mora Anugerah Berkat adalah perusahaan yang sudah berpengalaman dalam menyediakan / mensupply peralatan laboratorium untuk sipil / pertambangan seperti MATEST - E142 - Digital Pull - Off (Bond) Strength Tester, kami juga menyediakan berbagai brand/merk internasional dari USA, Eropa dan China, produk internasional yang kami supply / tawarkan seperti : Matest, Defelsko, Elcometer, Proceq, James Instruments, Qualitest / World of Test dan lain - lain ; Kami juga menyediakan Jasa Perbaikan (SERVICE), Jasa Perawatan (Maintenace) dan support untuk KALIBRASI / AKSESSORIES SPAREPART jangan ragu untuk menghubungi kami marketing dan sales kami siap membantu menjawab segala kebutuhan anda.

MATEST - E142 - Digital Pull - Off (Bond) Strength Tester

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