Glossary
For your convenience, view the definitions of content related terms and acronyms.
| Term | Definition |
|---|---|
| Antenna | The type, size, and configuration of the antenna used for transmitting and receiving wireless signals. |
| Accuracy (% of Span) | The maximum total deviation between the measured value and the true input, expressed as a percentage of the full-scale measurement range. It typically accounts for non-linearity, hysteresis, and repeatability. |
| Analog Input Range | Maximum range of the allowable input (i.e. ±30mV, ±10V, etc.) |
| Analog Input Type | The type and range of analog signals that a device is designed to accept from external sensors, such as 0–30 mV, 0–10 V, or 4–20 mA |
| Analog Output Type | The analog signal format and voltage/current range used to retransmit the measured input. Common examples include 0–10 V, ±10 V, and 4–20 mA, representing the full-scale measurement span of the device. |
| Analog Outputs | A retransmission of the measured signal as a continuous voltage (e.g., 0–10 V) or current (e.g., 4–20 mA) to external devices. |
| Brightness (mcd) | The luminance of the display, measured in millicandelas (mcd), indicating how visible the screen is under different lighting conditions. |
| Certification | Regulatory approvals required for legal operation (i.e. NTEP, CE, IECEx, FCC, etc.) |
| Channel Count | The number of independent input channels a device can measure and process simultaneously. |
| CMRR | CMRR is a measure of an amplifier or signal conditioner’s ability to reject common-mode signals—voltages that appear identically on both input lines—while amplifying only the differential signal. It is usually expressed in decibels (dB). |
| Communication Protocol | Supported input/output interface for digital devices (i.e. RS-485, Profinet, etc.) |
| Compatible Protocol | Communication method the display will use to receive and/or transmit data to other devices with (i.e. RS-232, RS-485, etc.) |
| Configuration Interface | The method used to configure or program the device, such as HMI buttons, dip switches, or software tools. |
| Data Logging | The ability of an indicator to store measurement data in non-volatile internal memory or on removable storage media (e.g., USB, SD card). |
| Digit Height | Height of the numeric characters on a segmented display. |
| Digital Outputs | Configurable outputs from internal relays or transistor-based circuits used to signal external devices based on set conditions or thresholds. |
| Display Format | The type of visual interface used, such as numeric/segmented displays or custom graphic layouts, often with additional visual indicators. |
| Environmental Resistance (IP/NEMA) | A standardized rating indicating the enclosure's resistance to dust, water, and other environmental elements, based on IP (Ingress Protection) or NEMA standards. |
| Frequency Band (MHz/GHz) | The portion of the RF spectrum used for communication (e.g., 902–928 MHz, 2.4 GHz). |
| Gain (V/V) | The ratio of output voltage to input voltage applied by the amplifier—expressed in volts per volt (V/V). This determines how much the input signal is amplified before being passed to the output or A/D converter. |
| Ingress Protection | IEC 60529 rating that indicates dust and water ingress resistance. The first digit indicates solid particle ingress protection while the second digit indicates water ingress protection. |
| Input Power (VDC/VAC) | The voltage range required to power the device. Some models include internal rectifiers to support direct AC connection, while others require a dedicated DC power supply. |
| Installation Mounting | The physical method by which the device is installed, such as panel-mounted, DIN-rail mounted, or wall-mounted, depending on the application and enclosure design. |
| Isolation | Electrical separation between different parts of a circuit to prevent unwanted current flow and protect against voltage spikes or ground loops. |
| Mounting Style | Mechanical mounting options for the display (i.e. pole, wall, rack, etc.). |
| Network Topology | The communication structure used between devices, such as point-to-point, star, or mesh networks. |
| Noise | Unwanted electrical disturbances that interfere with the accuracy or stability of an analog or digital signal. Noise can originate from internal circuit behavior or external sources such as electromagnetic fields or ground loops. |
| Operating Temperature (°C/°F) | The allowable ambient temperature range within which the device is guaranteed to operate reliably and maintain specified performance. |
| Power Consumption (W) | The amount of electrical power consumed by the device, typically specified as either a typical operating load or a maximum draw under full functionality. |
| Range (LoS) | Maximum communication distance under line-of-sight (LoS) conditions |
| Response Time (ms) | The time delay between a new input signal and the corresponding change displayed on the screen. |
| Resolution | The smallest change in input signal that a device can detect, typically determined by the bit depth of its analog-to-digital converter (ADC). Resolution is often expressed in bits or counts (e.g., 16-bit or 65,536 steps over the input range). |
| RF Output Power (dBm) | The maximum transmission power of the radio signal, measured in decibels relative to 1 milliwatt (dBm). |
| Storage Temperature | The allowable ambient temperature range during non-operational periods, such as shipping or long-term storage. This range assumes the device is powered off and properly packaged. |
| Tare Range | Maximum tare capacity, typically measured as a percentage of the full-scale output. |
| Update/Sample Rate | The number of measurements an indicator can acquire and process per second, typically expressed in samples per second (SPS) or Hz. |
| Viewing Angle | The maximum angle from which the display remains clearly readable without significant loss of contrast or visibility. |