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Form Factor:

Variables Measured:

Relative Humidity Range:

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(Overrange/margin requires both 'From' and 'To' values to work.)

Relative Humidity Accuracy:

Dew Point Range:

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Dew Point Accuracy:

Compensation:

Operating Temperature:

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Display:

Electrical Outputs:

Digital Outputs:

Technology:

Features:

Help with Hygrometers and Humidity Measurement Instruments specifications:

Physical Specifications
   Form Factor       
   Your choices are...         
   Sensor / Probe       This category includes the many types of humidity sensors that are used for process monitoring. Typically, a secondary device or instrument is required for data acquisition or the transmission of humidity data. 
   Transmitter       Transmitters are measurement or signal conditioning packages that provide a standard, calibrated output from a sensor or transducer. 
   Meter / Indicator       Devices measure humidity, moisture content, and/or dew point.  Most meters are hand held and have a local display. 
   Analyzer       Devices log information which can be downloaded to a computer for further analysis. 
   Instrument       Instruments are typically self-contained and provide an output, such as a display, at or near the unit. Instruments often include signal processing and/or conditioning. 
   Other       Other unlisted, specialized, or proprietary form factor. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Variables Measured       
   Your choices are...         
   Relative Humidity       Relative humidity is a measure of the amount of water in the air compared with the amount of water that the air can hold at the measured temperature. 
   Absolute Humidity       Absolute humidity is the mass of water vapor in a given volume of air. Specific humidity is absolute humidity divided by the total mass of the given volume of air. 
   Moisture Content       Moisture content or water content is the ratio of water mass to total mass. 
   Dew Point       Dew point is the temperature to which air must be cooled in order for saturation to occur. 
   Pressure       Devices measure pressure, typically with additional probes.  
   Temperature       Devices measure temperature, often with additional probes. 
   Other       Other unlisted, specialized, or proprietary variables. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Performance Specifications
   Relative Humidity Range:       Relative humidity range is the ambient range of relative humidity that devices can measure with a linear response. 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
   Relative Humidity Accuracy:       Relative humidity accuracy indicates the closeness of a measured or computed relative humidity value to its true value. 
   Search Logic:      All matching products will have a value less than or equal to the specified value.
   Dew Point Range       Dew point range is the ambient dew point range that devices are able to measure with a linear response. 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
   Dew Point Accuracy       Dew point accuracy indicates the closeness of a measured or computed dew point value to its true value. 
   Search Logic:      All matching products will have a value less than or equal to the specified value.
   Compensation       
   Your choices are...         
   Temperature Compensated       Output readings remain constant across a range of temperatures as long as the temperature changes are within the temperature-compensated range. 
   Pressure Compensated       Output readings remain constant across a range of pressures as long as the pressure changes are within the pressure-compensated range. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Operating Temperature       This is the temperature range in which devices are designed to operate. 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
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User Interface
   Display       
   Your choices are...         
   Analog Meter or Gauge       Analog meters or gauges include needle meters, light emitting diode (LED) indicators, etc. 
   Digital Readouts       Digital readouts are numerical or application-specific displays. 
   Video Display Terminal       Video display terminal (VDT) styles include cathode ray tube (CRT), flat panel displays (FPD), etc. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Electrical Outputs       
   Your choices are...         
   Analog Current       Devices provide variable current level outputs such as 0 - 20 mA, 4 - 20 mA current loop, etc.  
   Analog Voltage       Devices provide variable voltage outputs such as 0 - 10 V, ±5 V, etc. 
   Frequency or Pulse       Outputs are frequencies or pulse signals such as amplitude modulation (AM), frequency modulation (FM), or pulse width modulation (PWM) monitoring or control. 
   Switch or Relay       Devices provide switch-type outputs in which the contacts are open or closed depending on the state of the variable being monitored. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Digital Outputs       
   Your choices are...         
   Ethernet       Ethernet is a local area network (LAN) protocol that uses a bus or star typology and supports data transfer rates of 10 Mbps. The Ethernet specification is the basis for the IEEE 802.3 standard, which specifies the physical and lower software layers. To handle simultaneous demands, Ethernet uses carrier sense multiple access / collision detection (CSMA/CD) to monitor network traffic. 
   Modem       Modems (modulators-demodulators) are devices or programs that allow computers to transmit data over telephone lines. They convert digital computer data to analog sound waves and then demodulate the carrier signals to decode the transmitted information. 
   Parallel Interface       Parallel interfaces are channels that can transfer more than one bit at the same time. 
   SCSI       Small computer systems interface (SCSI) is an intelligent I/O parallel peripheral bus with a standard, device-independent protocol that allows many peripheral devices to be connected to the SCSI port. A single SCSI bus can drive up to eight devices or units: the host adapter or controller, and seven other devices. Each device is assigned a different SCSI ID, ranging from 0 to 7.  SCSI formats include SCSI-1, SCSI-2, SCSI-3, Wide SCSI, Fast SCSI, Wide Fast SCSI, Ultra SCSI, Ultra2 SCSI, Ultra3 SCI (Ultra160), Ultra 320 SCSI, and Ultra640 SCSI. 
   Serial Interface       Serial interfaces are channels in which only one bit of data is transmitted at a time. 
   TTL       Transistor-transistor logic (TTL) is a common type of digital circuit in which the output is derived from two transistors. 
   USB       Universal serial bus (USB) is a 4-wire, 12-Mbps serial bus for low-to-medium speed peripheral device connections to personal computers (PC), including keyboards, mice, modems, printers, joysticks, audio functions, monitor controls, etc. The USB design is standardized by the USB Implementers Forum (USBIF), an organization that includes leading companies from the computer and electronics industries. The current USB specification is USB 2.0, which supports data transfer rates of up to 480 Mbps. 
   Other       Other unlisted, specialized, or proprietary outputs. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Technology
           
   Your choices are...         
   Capacitive       When capacitive materials absorb moisture, their dielectric properties change and their capacitance increases. 
   Chilled Mirror       Mirrors are chilled to a temperature, the dew point, at which moisture begins to condense on the surface. 
   Electrolytic       Moisture is proportional to the current needed to electrolyze it from a desiccant (e.g., P2O5). 
   Infrared       Infrared (IR) instruments use the infrared spectrum to measure the absorption of moisture. 
   Microwave       This non-contact technology is used to measure moisture in a wide variety of materials. The amplitude and phase of a microwave signal is directly affected by the amount of moisture in a material. 
   Nuclear       Neutrons are slowed by the presence of moisture in a material. 
   Psychrometer       Relative humidity is determined by measuring the temperature difference between two thermometers, one wet and one dry. 
   Resistive       When resistive materials absorb moisture, their resistivity or impedance changes. 
   Strain Gauge / Piezoresistive       Strain gauges or piezoresistive elements are used to measure the expansion of materials that absorb water (e.g., cellulose crystallite). 
   Other       Other unlisted, specialized, or proprietary technologies. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Features
           
   Your choices are...         
   Self Calibrating       Devices are self-calibrating. 
   Event Triggered       Device can be configured to capture or log data when an event happens. 
   Self Testing / Diagnostics       Devices notify users when an internal fault condition is detected. 
   Datalogger       Devices are capable of logging and storing data. 
   Battery Powered       Batteries are used for full operation, not just backup. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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