Carat Milligram Scale OnBalance SEN-250

This new carat scale from OnBalance is professional, compact and portable. It includes a gem tray, locking tweezers, calibration weights and a universal USB power plug all in a zippered hard case. The Senso also has the ability to count pieces.

Scope of delivery:

• Scale SEN-250-BK
• 2x AAA-Batteries
• USB-Power-Adapter
• Tweezer
• Calibration weight  20 g & 50 g
• Weighing pan
• Zippered Soft Case
• User Guide

Features:

• Weighing units: g, oz, dwt, ct, gn
• Capacity max.: 50,000 g / 250,00 ct  / 1,7637 oz / 32,151 dwt / 711,62 gn
• Readability: 0,001 g / 0,005 ct  / 0,0001 oz /  0,001 dwt / 0,02 gn
• Back-lit LCD screen
• USB power adapter (included)
• 20 g & 50 g Calibration weights (included)
• Auto shut-off after 180 seconds of inactivity (adjustable Off/60/120/180 sec.)
• Tare function to zero out container weight
• Counting feature
• 2 x AAA-batteries (included)

Unit Specifications:

• Boxed Weight: 383 g
• Boxed Dimensions: 17 x 14 x 6,3 cm
• Net Weight (with/without Batteries): 133 g / 120 g
• Scale Dimensions: 138 x 74 x 45 mm
• Platform Size: Ø 45 mm
• Display: 50 x 18 mm

Key Descriptions

• ON/OFF - Turns the scale ON or OFF.
• MODE - Changes the weighing unit.
• TARE - Zeroes the scale. Also subtracts the weight of an empty container (see Tare Function).
• PCS - Enters counting mode. Hold to set sample quantity for average piece weight calculation.

Weighing

1. Press the ON/OFF key to turn the scale on.
2. Place the item on the centre of the weighing platform.
3. Take your reading from the display.
   You can press the MODE key to convert between weighing units.
4. The scale's auto-off function will turn the scale off after 3 minutes of inactivity or you can press the ON/OFF key to turn the scale off.

Counting Function

1. Place a sample quantity of 25, 50, 75 or 100 pcs of the item you want to count on the platform.
2. Press and hold the PCS key to enter counting setup.
3. Tap the MODE key to select your sample quantity.
4. Press the PCS key to confirm the sample quantity and set the average piece weight (APW) in memory.
5. You may now place any quantlty on the scale and view the piece count ('pcs' will show on the display).

Tare Function

The Tare function allows you to subtract the weight of a container so that the display only shows the weight of the contents.

NOTE: The weight of the container will subtract from the available capacity and will leave a negative value on the display once the weight is removed. Press TARE again to return the display to zero.

1. Place an empty tray or container on the platform.
2. Press TARE key to subtract the container weight.
3. Add items to the containers  to see their weight on the display.

Accuracy

Your scale comes calibrated from the factory and most users won't need to calibrate their scale for a long time. You should check your scale's accuracy periodically using calibration weights and perform calibration if necessary.

Callibration

Calibratlon adjustment is permanent and should only be performed using accurate calibratlon weights that match the exact requlrements for your scale. Do not use coins or other household items to calibrate your scale.

1. Prepare the included calibration weights (1x20g / 1x50G) for your scale.
2. Find a flat and level surface to perform calibration and let the scale adjust to room temperature.
3. Press ON/OFF to turn the scale on and wait for the scale to stabilise.
4. Press and hold the MODE key untll the display will flash 20g.
5. Place the 20g calibration weight on the centre of the platform.
6. The display will then flash 50g.
7. Remove the 20g calibration weight.
8. Plase the 50g calibration weight on the centre  of the platform.
9. The display will show 'PASS' then return to normal weighing mode.
10. You may now turn the scale off or continue weighing.