Allen Bradley 1797-IE8NF I/O modules

Allen Bradley 1797-IE8NF（Allen Bradley I/O modules） Describe：

The 1797-IE8NF I/O modules is an analog input module that features an integrated noise filter. 

1797-IE8NF I/O modules has Eight (8) analog input channels, individually configurable for 0-20 mA and 4-20 mA analog current signals. 1797-IE8NF modules has an IS input type of Ex ia IIB/IIC T4 AEx ia IIC T4 Class I, II, III Division 1 Group A-G T4 and IS module type Ex ib IIB/IIC T4 AEx ib IIC T4 Class I, II, III Division 1 Groups A-D T4.

The 1797-IE8NF I/O modules has 16-bit resolution. 

1797-IE8NF modules has accuracy of 0.1% of output signal range at 20 °C (68 °F and temperature drift of 0.05%/C of output signal range. The 1797-IE8NF modules’s functional data range is >15V @ 22 mA and >21.5V @ 0 mA.

The 1797-IE8NF I/O modules is designed for installation in Class I Division 1 & 2, Groups A-D hazardous areas, North American Class I Zone 1 & 2, Groups IIC, IIB, & IIA hazardous areas, and European Zones 1, 2, and 22. Additionally, all Flex Ex modules, including the 1797-IE8NF is also approved for establishing connection to Field devices installed in Class I, II, or III, Groups A-G hazardous areas, Devices within Class II or III locations, Field instruments installed in North American Class I Zone 0, 1, & 2, Groups IIC, IIB, & IIA hazardous areas and Devices located in European Zones 0, 1, 2, 21, and 22 hazardous areas. The 1797-IE8NF modules has an power dissipation of 5.2 W, Thermal Dissipation of 17.75 BTU/hr and Module Field-side Power Consumption of 7.5 W.

The 1797-IE8NF I/O modules is capable of indicating various fault conditions such as remote fault alarm and a local fault alarm. The Allen-Bradley 1797-IE8NF analog module with noise filter has an accuracy of 0.1% of the output signal at a specific temperature of 20 degrees Celsius, it has a configurable data format and 8 red fault indicators and 1 green power indicator. 1797-IE8NF modules has a power dissipation of 5.2 Watts and a thermal dissipation of 17.75 BTU per hour. When it comes to calibration, the Allen-Bradley 1797-IE8NF analog module with a noise filter is already calibrated when shipped, but depending on the application it is used for, additional periodic calibrations may be required. There are some errors that can be cleared only by calibrating the module. The 1797-IE8NF modules needed for performing a calibration are a precision current source, a precision current meter, and an industrial terminal and interconnect cable.

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