HI99171 เป็นเครื่องทดสอบค่า pH และวัดอุณหภูมิที่ออกแบบมาเฉพาะสำหรับใช้ในโรงงานฝอกหนัง (Leather) และโรงงานกระดาษ (Paper) หน้าจอ LCD แสดงผลการวัดทั้งค่า pH และอุณหภูมิในหน่วย ° C หรือ° F
ย่านการวัด -2.0 to 16.00 pH ด้วยค่าความถูกต้อง ±0.02pH และย่านการวัดอูณหภูมิ -5.0 to 105.0 °C สอบเทียบแบบอัตโนมัติแบบ 2จุด (2 Point Calibration) ด้วยบัฟเฟอร์ (pH 4.01/7.01/10.01)
เหมาะสำหรับผู้ใช้ที่จำเป็นต้องตรวจสอบค่า pH สำหรับโรงงานฝอกหนัง (Leather) และโรงงานกระดาษ (Paper) และต้องการความถูกต้องแม่นยำและประหยัดสามารถเปลี่ยนหัววัด คุณภาพสูงมาพร้อมกับใบรับรองการสอบเทียบ (Certificate) จากโรงงานขายราคาถูก จัดส่งทั่วไทย
Glass Body
The glass body of the HI14143 is chemically resistant and quick to reach thermal equilibrium, allowing for a faster, more stable response on a wide variety of surfaces.
Flat Tip
The flat tip sensing bulb allows for the direct surface measurement of a sample. The versatility of this tip shape allows pH measurement of samples ranging from leather and paper to cartons.
Open Junction Reference
The open junction design consists of a solid gel interface (viscolene) between the sample and internal Ag/AgCl reference. This interface prevents silver from entering the sample
pH measurement of paper, leather, and other surfaces are important during manufacturing and final product stages. In the paper industry, a pH measurement indicates the chemical stability and permanence of a paper.
It is desirable to manufacture paper that has a neutral or slightly basic pH to aid in the preservation of important documents, publications, and artworks. An acid-free or alkaline paper is able to absorb damaging acid compounds that are naturally formed through aging.
pH of paper and cartons is also important in the food industry. Food packaging often incorporates antimicrobial agents to inhibit microbial activity during distribution and storage conditions.
The activity of antimicrobial agents can quickly change with a variation in pH. pH compatibility tests consider food composition, chemistry of the antimicrobial agents used, and packaging material.
In leather making, tanning is one of the most chemically complex steps. Generally, tanning creates a leather product that is more breathable, flexible, and suitable for use in handbags, luggage, garments, and a variety of commercial items.
Tanning is performed by a vegetable method or chrome method; chrome-tanned leather requires the addition of chromium salts and a basic component to raise the pH.
The pH of the liquors used in the leather making process and the pH of the final leather product directly affect characteristics such as firmness, heat resistance, and durability.
HI99171 uses the HI14143 amplified pH electrode with glass body. This specialized electrode offers numerous features that improve surface pH testing.
An integrated temperature sensor allows for temperature compensated pH measurements without the need for a separate temperature probe. The probe’s flat sensing tip provides optimal surface contact with samples.
The flat tip of the HI14143 provides optimal surface contact between the sample and the junction. The HI14143 features an open junction design which utilizes a viscolene reference electrolyte that comes into direct contact with the sample, providing accurate, stable readings.
Features
- Waterproof – The HI99171 is a waterproof meter rated IP67 for immersion in up to one meter of water for 30 minutes.
- Automatic Calibration – One or two-point calibration is automatic to two selectable buffer sets.
- Sensor Check – Using the pH‐mV range the user can check the sensor status by reading the mV reading in fresh buffers.
- Multi-Level LCD Display – The split-level LCD displays both pH and temperature readings, along with indicators for reading stability, battery percentage, and probe condition.
- Probe Condition Indicator – The probe condition indicator is based on the offset and slope characteristic of the electrode.
Specification HI99171
- pH Range -2.00 to 16.00 pH
- pH Resolution 0.01 pH
- pH Accuracy ±0.02 pH
- pH Calibration automatic, at one or two points with two sets of buffers (standard 4.01, 7.01,10.01 or NIST 4.01, 6.86, 9.18)
- Temperature Range -5.0 to 105.0°C/23.0 to 221.0°F
- Temperature Resolution 0.1°C/0.1°F
- Temperature Accuracy ±0.5°C (up to 60°C); ±1.0°C (outside) / ±1°F (up to 140°F); ±2.0°F (outside)
- Temperature Compensation automatic from -5.0 to 105.0ºC (23 to 221ºF)
- Electrode/Probe HI1414D pre-amplified pH probe with internal temperature sensor, DIN connector and 1 m (3.3’) cable
- Battery Type/Life 1.5V (3) AAA / approximately 1200 hours of continuous use; auto-off after 8 minutes of non-use
- Environment 0 to 50°C (32 to 122°F); RH max 100%
- Dimensions 152 x 58 x 30 mm
- Weight 205 g
HI99171 มาพร้อมชุดกระเป๋าอุปกรณ์พร้อมและใบรับรอง Certificate of Calibration
