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Measurements may fluctuate with hot or cold samples. Wait for approximately 20 seconds before pressing the START button for stabilization.
Store in a dry place away from direct sunlight, humidity, and heat. Maintain a stable temperature with minimal fluctuation.
One-year warranty void if disassembled, misused, or damaged. Repair services available after warranty expires.
Identifies key parts including LCD, START button, Battery compartment, Sample stage, and ZERO button for operation and maintenance.
Read and follow all safety instructions before operating the instrument to prevent personal injury or property damage.
Measurements may fluctuate with hot or cold samples. Wait for approximately 20 seconds before pressing the START button for stabilization.
Store in a dry place away from direct sunlight, humidity, and heat. Maintain a stable temperature with minimal fluctuation.
One-year warranty void if disassembled, misused, or damaged. Repair services available after warranty expires.
Identifies key parts including LCD, START button, Battery compartment, Sample stage, and ZERO button for operation and maintenance.
Read and follow all safety instructions before operating the instrument to prevent personal injury or property damage.
The ATAGO PAL-89S "Pocket" Coolant Refractometer is a portable instrument designed to measure the concentration of Propylene glycol and its freezing point. The main scale displays the Propylene glycol concentration, while the secondary scale shows the freezing point. The device features automatic temperature compensation, which corrects readings based on the prism's temperature within a specified range, ensuring accuracy even with varying sample temperatures. However, users should be aware that measurements might fluctuate with hot or cold samples, and it's recommended to wait approximately 20 seconds for the instrument to acclimate to the sample temperature before pressing the START button.
To begin using the refractometer, zero-setting is required. This should be performed daily and after replacing batteries. The process involves cleaning the prism, applying about 0.3mL of tap water, and allowing it to acclimate to the instrument's temperature. Then, with the water on the prism, the ZERO button is pressed. The display will show "000" blinking twice before stopping, indicating successful zero-setting. If "AAA" is displayed, the prism needs to be cleaned again, water reapplied, and the ZERO button pressed. After zero-setting, the prism should be wiped clean with tissue paper, and the device is ready for measurement.
For measurement, approximately 0.3mL of the sample is applied to the prism. The START button is then pressed, and after "---" appears, the measurement and prism temperature are displayed on the LCD. Initial measurements with hot or cold samples may fluctuate, so it's advisable to wait for the instrument to acclimate to the sample temperature or press the START button multiple times until stable readings are achieved. The displayed temperature reflects the prism's temperature, which may not always match the sample's temperature. For oily or fatty samples, stirring the sample on the prism during measurement can improve repeatability.
The PAL-89S is designed for ease of use and durability. It is water-resistant (IP65), meaning it can withstand splashes but should not be submerged. The body case is made of resin, so it should not be exposed to water vapor, and some solvents may compromise its structural integrity. The device is powered by two AAA alkaline batteries. When the battery icon indicates a low power level, both batteries should be replaced with new ones. Battery replacement involves using a coin to turn the battery compartment cover counterclockwise, inserting the new batteries with correct polarity, aligning the cover, pushing it down, and turning it clockwise until it stops. Over-tightening should be avoided to prevent malfunction.
Maintenance of the refractometer is straightforward. After each use, the sample should be wiped off, and the prism and sample stage cleaned with a mild soap and thoroughly rinsed with water, then dried with tissues. It's crucial not to scratch the prism, and metal tools should not be used for cleaning or applying samples. Water above 50°C should not be used for rinsing, as it may warp the plastic and compromise water resistance. When measuring hot samples, only the necessary amount should be applied, preventing overflow. If hot water is needed to clean hardened samples, water-soaked gauze should be used around the prism area, keeping hot water away from the body case.
For storage, the instrument should be kept in a dry place, away from direct sunlight, humidity, and heat, as these can damage it. It should also be stored at a stable temperature with minimal fluctuations. The LCD features an auto shut-off function, turning off after 2 minutes of inactivity. To manually turn it off, the START button should be held down for more than 2 seconds.
The device also provides error messages to alert users to potential issues. "Lo" indicates a low battery. "AAA" means the ZERO button was pressed with nothing or something other than water on the prism. "XXX" signifies that the START button was pressed with nothing or an insufficient amount of sample. "LLL" indicates that the sample measured is outside the measurement range, or too much light is entering the prism (in which case, shading the sample stage with a hand is recommended). If "EEE" is displayed, the instrument is faulty, and batteries should be replaced. If the error persists, ATAGO should be contacted. The device also indicates if the prism temperature is below or above the acceptable range.
The instrument comes with a one-year warranty from the date of purchase. This warranty is void if the instrument has been disassembled by unauthorized personnel, misused, operated outside environmental specifications, if the prism or sample stage is damaged, if there is water damage, if it has been dropped, or if there is leakage from non-included batteries. Repair services are available for a fee after the warranty expires, and users should have the serial number ready when contacting a service center. The warranty period can be extended from one year to two years by registering customer information.
General| Model | PAL-89S |
|---|---|
| Ambient Temperature | 10 to 40°C |
| Sample Volume | 0.3 mL |
| Light Source | LED |
| Power Supply | 2 x AAA batteries |
| Battery Life | Approx. 11, 000 measurements |
| IP Rating | IP65 |
| Resolution | 0.1% |
| Accuracy | ±0.2% |
| Dimensions | 55 x 31 x 109 mm (2.2 x 1.2 x 4.3 in) |
| Weight | 100 g (3.5 oz) |
