Summary of QHW 15
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Ugqhw-e0204 qhw series digital weighing scales user’s guide.
Page 3: Contents
Contents section 1 introduction………………………………………………………………1 section 2 specifications……………………………………………………..……2 section 3 installation……………………………………………………..……….3 3.1 general installation……………………………………………………………………3 3.2 install of qhw series…………………………………………………………..………3 section 4 key descriptions……………………………...
Page 5: Section 1 Introduction
- 1 - section 1 introduction the qhw series of scales provides an accurate, fast and versatile series of general purpose weighing scales with counting, % weighing and check-weighing functions. There are 4 models in each series, with capacities up to 30 kg. They all have stainless steel weighing plat...
Page 6: Section 2 Specifications
Qhw digital weighing scales user’s guide - 2 - section 2 specifications qhw series model # qhw 3 qhw 6 qhw 15 qhw 30 maximum capacity 3kg 6kg 15kg 30kg readability 0.1g 0.2 0.5 1g resolution 1:30000 1:30000 1:30000 1:30000 tare range -3kg -6kg -10kg -30kg minimum capacity 2g 4g 10g 20g repeatability...
Page 7: Section 3 Installation
- 3 - section 3 installation 3.1 general installation the scales should be sited in a location that will not degrade the accuracy. Avoid extremes of temperature. Do not place in direct sunlight or near air conditioning vents. Avoid unsuitable tables. The tables or floor must be rigid and not vibrate...
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Qhw digital weighing scales user’s guide - 4 - section 4 key descriptions zero or set the zero point for all subsequent weighing. The display shows zero. A secondary function , of "enter" key when setting parameters or other functions. Tare or tares the scale. Stores the current weight in memory as ...
Page 9: Section 5 Displays
- 5 - section 5 displays the lcd display will show a value and a unit to the right of the digits. In addition there are labels for tare, gross weight, zero and for low battery 888888 ok hi lo gross tare zero g/pcs oz % tkglb checkweighing symbols stability symbol low battery symbol parts counting un...
Page 10: Section 6 Operation
Qhw digital weighing scales user’s guide - 6 - section 6 operation 6.1 zeroing the display you can press the zero/enter key at any time to set the zero point from which all other weighing and counting is measured, within 4% of power up zero. This will usually only be necessary when the platform is e...
Page 11: 6.5 Parts Counting
- 7 - of weight will cause the display to jump to 102.13% as one scale division (0.5g) increase to 24.0g will be equivalent to a 2.13% increase. Removing the 350g weight and putting a 300g weight on the scale the display will show 85.71% as 300g is 85.71% of 350g. Pressing the func key will return t...
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Qhw digital weighing scales user’s guide - 8 - both limits set the display will show ok and the beeper will sound when the weight is between the limits. Low limit set, high limit is set to zero the display will show ok and the beeper will sound when the weight is less than the low limit. Above the l...
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- 9 - 6.9 automatic accumulation when the scale has been set to automatic accumulation the value is stored in memory automatically. Add a weight to the scale, the beeper will sound when the scale is stable to signify the value is accepted. Remove the weight. The display will show "acc 1" and the tot...
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Qhw digital weighing scales user’s guide - 10 - section 7 battery operation the scales can be operated from the battery if desired. The battery life is approximately 100 hours. When the battery needs charging the arrow above the low battery symbol under the weight display will turn on. The battery s...
Page 15: Section 8 Rs-232 Output
- 11 - section 8 rs-232 output the qhw series of scales can be ordered with an optional rs-232 output. Specifications: rs-232 output of weighing data ascii code 4800 baud 8 data bits no parity connector: 9 pin d-subminiature socket pin 2 output pin 3 input, not used at this time pin 5 signal ground ...
Page 16: Section 9 Parameters
Qhw digital weighing scales user’s guide - 12 - section 9 parameters the scale has 6 parameters that can be set by the user. These allow the user to set the scale to: • display the weight in other increments of weight to minimize the affects of vibration, wind or other environmental conditions. • co...
Page 17: Section 10 Calibration
- 13 - section 10 calibration 10.1 linear calibrate to start calibration turn the scale off and then turn it back on. Press the limit and % keys together during the initial counting from 9 to 0 on the display. The display will show "unload". Remove all weight from the pan and then press the zero/ent...
Page 18: Section 11 Error Codes
Qhw digital weighing scales user’s guide - 14 - section 11 error codes during the initial power-on testing or during operation it is possible the scale may show an error message. The meaning of the error messages is described below. If an error message is shown repeat the procedure that caused the m...