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Change the answer mode for this tool by selecting pressure, accuracy or error as the parameter to calculate instead

**Pressure sensor products**

- 0-5 Volts Output Pressure Transducers
- RS232 Serial Interface Pressure Sensors
- High Temperature Pressure Transmitters
- DMK457 Marine Approved Pressure Transmitter

## Related Tools

## User Guide

This tool will calculate the pressure error, accuracy factor or pressure range value for a pressure measurement device.

Use different pressure units to define the pressure measurement error to avoid long decimals with too many leading zeros.

Define accuracy as a percentage value or a parts per million factor, plus a few other rarely used methods to express measurement accuracy.

Determine the largest pressure range that can be used to achieve a specified pressure measuring accuracy.

### Formulas

The formulas used by this pressure measurement, accuracy and error calculator to determine each individual parameter are:

PE = P · Acc

Acc = PE / P

P = PE / Acc

#### Symbols

- PE = Error value in pressure units
- Acc = Accuracy as a proportion of a pressure value
- P = Pressure value

### Pressure

This is the pressure value used to derive the percentage accuracy or the pressure error. The pressure range of a pressure measurement device is often used when calculating the pressure error since the accuracy is typically defined as a percentage of full scale (%FS).

For pressure calibration equipment the accuracy is sometimes defined as a percentage of reading, and in this case it would be a specific pressure reading that would be used to calculate the pressure error value at a particular pressure reading.

Determining the pressure range required for a given pressure error deviation and percentage accuracy is useful for determining the maximum pressure range that would be possible, without exceeding a required maximum pressure deviation for a device with a defined accuracy.

### Accuracy

This is the proportion of the pressure range or reading that defines the margin of error in measuring the true pressure value.

### Error

This is the amount of pressure that a reading may deviate from the true pressure value.

**Pressure gauge products**

- DS200P Sanitary Low Range Pressure Gauge, Switch and Sensor
- Pressure Indicator Transmitters
- Vacuum, Suction, Negative Pressure Gauges
- LEX1 (Ei) High Accuracy Digital Pressure Gauge