Help zone

FAQ

Why canít my scale be powered on?
Check whether AC adapter or batteries have been correctly installed.

What type of display works best with battery power? Why?
LCD - low power consumption and long battery life.

What are the differences between LED, LCD, and VFD displays?
Light Emitting Diode (LED) and Vacuum Fluorescent Display (VFD) display types are recommended for indoor applications, identifiable by digits that light up over a dark background.
For most applications in sunlight we suggest a Liquid Crystal Display (LCD), which is identifiable by black digits over a gray (or backlit) background.

Why is multiple points calibration needed for CAL.LINE?
to make the scale more accurate.

What is re-zero in calibration used for?
Calibrating equipment requires chains and other hardware, so the re-zero is built in to allow you to shift the span back to a true zero after the calibration process.

What type of load cell works best in a bench scale?
Typically, bench scales up to about 600 lbs in capacity will use one single-point load cell. This can vary depending on platform size, capacity, application, etc.

Why canít my scale with division 0.2lb weigh a 2lb box?
Since the box weight is less than 20d.

How far does RS-232 travel?
Because of sensitivity to noise, RS232 is not recommended for applications requiring more than 50 feet of travel.

Which would travel farther in RS-232, 9600 or 1200 baud?
In this case 1200 baud. In general, slower baud rates will travel greater distances.

What digital filter setting will work best for a high speed filling application?
Always use the minimum amount of filtering necessary for a stable reading. Exceeding that will slow your updating speed and ultimately compromise accuracy and performance.

What must match for an indicator and a peripheral device to communicate?
Baud rate, Data bits, and parity.

What is "duplex" communication?"
This is a means of communication that both transmits and receives information (two way).

How are output data from multiple scales not mixed on PC?
Measuretek scale which equipped with USB or RS232 interface can input its own unit ID, you can identify the data from different ID.

Can ECS-B floor scale, EHP platform scale or PS-103/PS-102 shipping scale print to USB printer?
No, the scale can only work with RS232 printer, since the USB port on the scale indicator is a virtual RS232 interface, not a standard real USB port.

Can information be sent to microsoft excel?
-Yes, you can connect the scale to PC, output the data to PC via US/RS232 COM assistant (software can be download from our website: http://www.measuretek.net/Download.html), then†export the data from COM assistant to a Microsoft excel file.

What is an analog output and where is it used?
A continuous variable voltage (0-10V) or current (4-20ma) output that tracks the weight applied to the scale. Analog outputs are commonly used to communicate with a PLC

What is the purpose of the A/D converter?
To convert an analog signal (like the signal from a load cell) to a digital signal that can displayed as a value.

What is the purpose of sensing?
Running a load cell cable over longer distance and exposing it to severe temperature change can impact the resistance within the cable and ultimately the accuracy of the scale. Therefore, sense lines are used to help the A/D monitor exactly how much excitation voltage is at the load cell and maintain accuracy for the entire system.

What do EMI and RFI stand for?
These are two types of interference. Electro Magnetic Interference (EMI) comes from industrial type equipment with large coils or motors. Radio Frequency Interference (RFI) comes from transmitting devices such as radios and cell phones.

How far does RS-232 travel?
Because of sensitivity to noise, RS232 is not recommended for applications requiring more than 50 feet of travel.

Which would travel farther in RS-232, 9600 or 1200 baud?
-In this case 1200 baud. In general, slower baud rates will travel greater distances.

What digital filter setting will work best for a high speed filling application?
Always use the minimum amount of filtering necessary for a stable reading. Exceeding that will slow your updating speed and ultimately compromise accuracy and performance.

What must match for an indicator and a peripheral device to communicate?
Baud rate, Data bits, and parity.

What is "duplex" communication?"
This is a means of communication that both transmits and receives information (two way).

How are output data from multiple scales not mixed on PC?
Measuretek scale which equipped with USB or RS232 interface can input its own unit ID, you can identify the data from different ID.

Can ECS-B floor scale, EHP platform scale or PS-103/PS-102 shipping scale print to USB printer?
No, the scale can only work with RS232 printer, since the USB port on the scale indicator is a virtual RS232 interface, not a standard real USB port.

Can information be sent to microsoft excel?
es, you can connect the scale to PC, output the data to PC via US/RS232 COM assistant (software can be download from our website: http://www.measuretek.net/Download.html), then†export the data from COM assistant to a Microsoft excel file.

What is an analog output and where is it used?
A continuous variable voltage (0-10V) or current (4-20ma) output that tracks the weight applied to the scale. Analog outputs are commonly used to communicate with a PLC.

What is the purpose of the A/D converter?
To convert an analog signal (like the signal from a load cell) to a digital signal that can displayed as a value.

What is the purpose of sensing?
Running a load cell cable over longer distance and exposing it to severe temperature change can impact the resistance within the cable and ultimately the accuracy of the scale. Therefore, sense lines are used to help the A/D monitor exactly how much excitation voltage is at the load cell and maintain accuracy for the entire system.

What do EMI and RFI stand for?
These are two types of interference. Electro Magnetic Interference (EMI) comes from industrial type equipment with large coils or motors. Radio Frequency Interference (RFI) comes from transmitting devices such as radios and cell phones.

What is calibration?
Calibration simply means that you are teaching the scale what ZERO weight is and another known ACCURATE or "span" weight.

Why is it important to have an accurate weight for calibration?
Since you are teaching the scale a known weight, it is important to make sure the weight applied is as accurate as possible. Most scales allow you to choose what weight you are using for calibration, they are typically 10%, 25%, 50% of the scales capacity. Once defining your calibration weight, and performing a calibration, the scale will mathmetically calculate the weight placed on the scale above the calibration weight used. Using an inaccurate weight will cause your scale to weigh inaccurately every time.

When does a scale require calibration?
Most companies have a calibration policy to comply with their ISO or Qaulity System Procedures. Scale manufacturers typically recommend a yearly calibration to ensure accurate weighing. Scales can loose their accuracy or intial calibration values from being shipped by the manufacturer, a significant change in altitude, numerous overloads or underloads, or deflections accuring from the mechanical structure not being aligned properly.

Is calibration covered under warranty?
Typically calibration of a scale is not covered under warranty. Calibration is not defined as a product defect. Some companies will allow your scale to be returned to the factory for a minimal fee. A certified scale technician, found in your local yellow pages, is the recommended method for installing a new scale or performing an annual calibratrion.