{"id":29473,"date":"2025-09-17T14:31:16","date_gmt":"2025-09-17T06:31:16","guid":{"rendered":"https:\/\/pxisource.com\/?post_type=product&#038;p=29473"},"modified":"2026-08-27T20:23:46","modified_gmt":"2026-08-27T12:23:46","slug":"ni-9208","status":"publish","type":"product","link":"https:\/\/pxisource.com\/ru\/product\/ni-9208\/","title":{"rendered":"\u041d\u0418-9208"},"content":{"rendered":"<h3>Product Introduction<\/h3>\n<p>\n\u0417\u0435\u043c\u043b\u044f <strong>\u041d\u0418-9208<\/strong> \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u043f\u043b\u043e\u0442\u043d\u043e\u0441\u0442\u0438 <strong>16-channel C Series current input module<\/strong> designed for industrial data acquisition, process monitoring, automated test, machine monitoring, and measurement of current-output sensors and transmitters.\n<\/p>\n<p>\nThe NI-9208 provides <strong>16 single-ended analog current input channels<\/strong>, a nominal <strong>\u0414\u0438\u0430\u043f\u0430\u0437\u043e\u043d \u0438\u0437\u043c\u0435\u0440\u0435\u043d\u0438\u044f \u00b120 \u043c\u0410<\/strong>, <strong>24-bit resolution<\/strong>, and a maximum aggregate sampling rate of <strong>500 S\/s<\/strong>.\n<\/p>\n<p>\nDesigned with industrial measurement systems in mind, the NI-9208 also provides a high-resolution acquisition mode with <strong>50\/60 Hz rejection<\/strong>, helping reduce power-line interference in low-speed precision measurements.\n<\/p>\n<h3>Product Overview<\/h3>\n<p>\n\u0417\u0435\u043c\u043b\u044f <strong>National Instruments NI-9208<\/strong> belongs to the C Series current input module family and can be integrated into compatible CompactDAQ and CompactRIO systems.\n<\/p>\n<p>\nA typical measurement architecture is:\n<\/p>\n<p>\n<strong>4\u201320 mA Sensor \/ Current Signal \u2192 NI-9208 \u2192 CompactDAQ or CompactRIO \u2192 Measurement Software<\/strong>\n<\/p>\n<p>\nIts 16-channel architecture provides high channel density in a single C Series slot, making it particularly useful for industrial systems that need to monitor many current-loop sensors without installing multiple lower-channel-count modules.\n<\/p>\n<h3>Key Features<\/h3>\n<h4>16 Current Input Channels<\/h4>\n<p>\nThe NI-9208 provides <strong>16 single-ended analog current input channels<\/strong>.\n<\/p>\n<p>\nThe high channel count is useful for systems that monitor multiple industrial transmitters, sensors, and process signals simultaneously within a compact C Series platform.\n<\/p>\n<p>\nTypical connected devices include:\n<\/p>\n<ul>\n<li>Pressure transmitters<\/li>\n<li>Flow transmitters<\/li>\n<li>Level transmitters<\/li>\n<li>Temperature transmitters<\/li>\n<li>Position transmitters<\/li>\n<li>Industrial process sensors<\/li>\n<li>Current-output measurement devices<\/li>\n<\/ul>\n<h4>\u00b120 mA Current Measurement<\/h4>\n<p>\nThe NI-9208 is designed for current measurements around the standard industrial current-loop range and supports approximately <strong>-20 mA to +20 mA<\/strong> measurement.\n<\/p>\n<p>\nThis makes it particularly suitable for common industrial signals such as:\n<\/p>\n<ul>\n<li>4\u201320 mA<\/li>\n<li>0\u201320 \u043c\u0410<\/li>\n<li>Bidirectional current signals<\/li>\n<li>Industrial transmitter outputs<\/li>\n<\/ul>\n<h4>24-Bit Resolution<\/h4>\n<p>\nThe NI-9208 uses a <strong>24-\u0431\u0438\u0442\u043d\u044b\u0439 \u0410\u0426\u041f<\/strong>, providing high digital resolution for industrial current measurements.\n<\/p>\n<p>\nThis is especially useful for slowly changing process signals where measurement stability and the ability to detect small current changes are more important than very high acquisition speed.\n<\/p>\n<h4>500 S\/s Maximum Sampling Rate<\/h4>\n<p>\nThe NI-9208 provides a maximum sampling rate of <strong>500 S\/s<\/strong>.\n<\/p>\n<p>\nThe 500 S\/s specification applies to the module&#8217;s multiplexed acquisition architecture and should <strong>not<\/strong> be interpreted as 500 S\/s per channel.\n<\/p>\n<p>\nWhen multiple channels are scanned, the available acquisition rate is distributed across the channels being measured.\n<\/p>\n<h4>High-Resolution Mode<\/h4>\n<p>\nThe NI-9208 provides a <strong>high-resolution measurement mode<\/strong> intended for applications where low noise is more important than maximum acquisition speed.\n<\/p>\n<p>\nThis mode is particularly useful for slowly changing industrial process measurements such as pressure, temperature, flow, and level.\n<\/p>\n<h4>50\/60 Hz Noise Rejection<\/h4>\n<p>\nThe high-resolution mode includes <strong>50 Hz and 60 Hz rejection<\/strong> to help reduce interference from AC power systems.\n<\/p>\n<p>\nThis capability is useful in industrial environments where low-level current signals may be affected by mains-frequency electrical noise.\n<\/p>\n<h4>Industrial Current Loop Measurement<\/h4>\n<p>\nThe NI-9208 is particularly well suited for <strong>4\u201320 mA industrial current loops<\/strong>.\n<\/p>\n<p>\nA typical architecture is:\n<\/p>\n<p>\n<strong>Industrial Transmitter \u2192 4\u201320 mA Signal \u2192 NI-9208 \u2192 Monitoring \/ Control Software<\/strong>\n<\/p>\n<p>\nThe measured current can represent physical variables such as pressure, temperature, flow, level, position, or other process parameters.\n<\/p>\n<h4>External Power Routing<\/h4>\n<p>\nThe NI-9208 provides <strong>Vsup terminals<\/strong> that can be used for routing an external power supply to connected sensors.\n<\/p>\n<p>\nThe Vsup connection supports external power routing up to <strong>2 A and 30 V maximum<\/strong>, subject to the module&#8217;s wiring and safety requirements.\n<\/p>\n<h4>Active and Passive Sensor Support<\/h4>\n<p>\nThe NI-9208 can be used with both active and passive current-output sensors when they are wired correctly.\n<\/p>\n<p>\nFor a typical passive sensor, the external supply can be routed through Vsup and the appropriate analog input channel.\n<\/p>\n<p>\nFor an active sensor that provides its own powered current output, the signal can be connected between the appropriate analog input and COM according to the device wiring requirements.\n<\/p>\n<h4>C Series Platform<\/h4>\n<p>\nThe NI-9208 uses the <strong>NI C Series<\/strong> form factor.\n<\/p>\n<p>\nThis allows it to be combined with other measurement and control modules in compatible systems, including:\n<\/p>\n<ul>\n<li>Voltage input modules<\/li>\n<li>Temperature modules<\/li>\n<li>Digital input\/output modules<\/li>\n<li>Relay modules<\/li>\n<li>Analog output modules<\/li>\n<li>Communication modules<\/li>\n<\/ul>\n<h3>Technical Specifications<\/h3>\n<table>\n<tr>\n<th>\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440<\/th>\n<th>\u0421\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f<\/th>\n<\/tr>\n<tr>\n<td width=\"280\">Product Type<\/td>\n<td>C Series Current Input Module<\/td>\n<\/tr>\n<tr>\n<td>\u041c\u043e\u0434\u0435\u043b\u044c<\/td>\n<td>\u041d\u0418-9208<\/td>\n<\/tr>\n<tr>\n<td>Manufacturer<\/td>\n<td>\u041d\u0430\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u044b<\/td>\n<\/tr>\n<tr>\n<td>Bus \/ Platform<\/td>\n<td>C Series<\/td>\n<\/tr>\n<tr>\n<td>Analog Input Channels<\/td>\n<td>16 Single-Ended<\/td>\n<\/tr>\n<tr>\n<td>Analog Input Resolution<\/td>\n<td>24 Bit<\/td>\n<\/tr>\n<tr>\n<td>Current Measurement Range<\/td>\n<td>\u00b120 mA Class<\/td>\n<\/tr>\n<tr>\n<td>Maximum Sampling Rate<\/td>\n<td>500 S\/s Aggregate<\/td>\n<\/tr>\n<tr>\n<td>ADC Architecture<\/td>\n<td>Delta-Sigma, Multiplexed<\/td>\n<\/tr>\n<tr>\n<td>High-Resolution Mode<\/td>\n<td>Supported<\/td>\n<\/tr>\n<tr>\n<td>50\/60 Hz Rejection<\/td>\n<td>Supported<\/td>\n<\/tr>\n<tr>\n<td>Vsup External Power Routing<\/td>\n<td>Up to 2 A \/ 30 V Maximum<\/td>\n<\/tr>\n<tr>\n<td>Operating Temperature<\/td>\n<td>-40 \u00b0C \u0434\u043e 70 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Primary Applications<\/td>\n<td>4\u201320 mA Measurement, Industrial Monitoring, Process Measurement and Data Acquisition<\/td>\n<\/tr>\n<\/table>\n<h3>NI-9208 Part Numbers<\/h3>\n<p>\nThe NI-9208 is available in several configurations. The connector type, isolation rating, and conformal coating should be checked using the complete part number before ordering.\n<\/p>\n<table>\n<tr>\n<th>Part Number<\/th>\n<th>Connection<\/th>\n<th>\u041a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u044f<\/th>\n<\/tr>\n<tr>\n<td><strong>785041-01<\/strong><\/td>\n<td>\u0412\u0435\u0441\u0435\u043d\u043d\u0438\u0439 \u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b<\/td>\n<td>NI-9208 Spring-Terminal Version<\/td>\n<\/tr>\n<tr>\n<td><strong>780968-01<\/strong><\/td>\n<td>D-SUB<\/td>\n<td>NI-9208 D-SUB Version<\/td>\n<\/tr>\n<tr>\n<td><strong>780968-02<\/strong><\/td>\n<td>D-SUB<\/td>\n<td>NI-9208 D-SUB, Conformal-Coated Version<\/td>\n<\/tr>\n<\/table>\n<p>\nAlways provide the complete NI part number when requesting a replacement or quotation because different NI-9208 variants can have different connector, isolation, and environmental characteristics.\n<\/p>\n<h3>Spring Terminal vs D-SUB NI-9208<\/h3>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>\u0412\u0435\u0441\u0435\u043d\u043d\u0438\u0439 \u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b<\/th>\n<th>D-SUB<\/th>\n<\/tr>\n<tr>\n<td>Typical Part Number<\/td>\n<td>785041-01<\/td>\n<td>780968-01<\/td>\n<\/tr>\n<tr>\n<td>\u041a\u0430\u043d\u0430\u043b\u044b<\/td>\n<td>16<\/td>\n<td>16<\/td>\n<\/tr>\n<tr>\n<td>\u0420\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0435<\/td>\n<td>24 Bit<\/td>\n<td>24 Bit<\/td>\n<\/tr>\n<tr>\n<td>Maximum Sampling Rate<\/td>\n<td>500 S\/s<\/td>\n<td>500 S\/s<\/td>\n<\/tr>\n<tr>\n<td>Current Range<\/td>\n<td>\u00b120 mA Class<\/td>\n<td>\u00b120 mA Class<\/td>\n<\/tr>\n<tr>\n<td>Front Connection<\/td>\n<td><strong>\u0412\u0435\u0441\u0435\u043d\u043d\u0438\u0439 \u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b<\/strong><\/td>\n<td><strong>D-SUB<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Channel-to-Earth Isolation<\/td>\n<td><strong>250 \u0412 (\u0441\u0440\u0435\u0434\u043d\u0435\u043a\u0432\u0430\u0434\u0440.)<\/strong><\/td>\n<td>60 \u0412 \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u043e\u0433\u043e \u0442\u043e\u043a\u0430<\/td>\n<\/tr>\n<\/table>\n<h3>How Does the NI-9208 Work?<\/h3>\n<p>\nThe NI-9208 converts analog current signals from sensors and industrial transmitters into digital measurement data.\n<\/p>\n<p>\nA simplified measurement path is:\n<\/p>\n<p>\n<strong>Current Signal \u2192 NI-9208 Input \u2192 Multiplexer \u2192 24-Bit ADC \u2192 C Series Chassis \u2192 Measurement Software<\/strong>\n<\/p>\n<p>\nThe host system can then display, analyze, log, alarm, or process the acquired current measurements.\n<\/p>\n<h3>Understanding the 500 S\/s Sampling Rate<\/h3>\n<p>\nAn important specification to understand is that the NI-9208 uses a <strong>multiplexed ADC architecture<\/strong>.\n<\/p>\n<p>\nThe specified <strong>500 S\/s maximum rate applies across the module<\/strong> rather than independently to every channel.\n<\/p>\n<p>\nTherefore, applications requiring high-speed simultaneous measurements on every channel should consider a different C Series current input module.\n<\/p>\n<p>\nThe NI-9208 is primarily optimized for <strong>high-channel-count industrial process measurements<\/strong> rather than high-speed waveform acquisition.\n<\/p>\n<h3>High-Speed Mode vs High-Resolution Mode<\/h3>\n<p>\nThe NI-9208 provides acquisition modes optimized for different measurement priorities.\n<\/p>\n<table>\n<tr>\n<th>Mode<\/th>\n<th>Typical Priority<\/th>\n<\/tr>\n<tr>\n<td>High-Speed Mode<\/td>\n<td>Faster channel conversion and monitoring<\/td>\n<\/tr>\n<tr>\n<td>High-Resolution Mode<\/td>\n<td>Lower noise and 50\/60 Hz rejection<\/td>\n<\/tr>\n<\/table>\n<p>\nHigh-resolution mode is particularly useful for slowly changing industrial process signals where power-line noise rejection is important.\n<\/p>\n<h3>What Is a 4\u201320 mA Current Loop?<\/h3>\n<p>\nA <strong>4\u201320 mA current loop<\/strong> is one of the most common analog signal standards used in industrial instrumentation.\n<\/p>\n<p>\nA typical system consists of:\n<\/p>\n<p>\n<strong>Sensor \/ Transmitter \u2192 4\u201320 mA Loop \u2192 NI-9208 \u2192 Measurement System<\/strong>\n<\/p>\n<p>\nThe current represents the measured physical parameter. For example, a pressure transmitter may map its minimum measurement value to approximately 4 mA and its maximum measurement value to approximately 20 mA.\n<\/p>\n<h3>Why Use Current Instead of Voltage Signals?<\/h3>\n<p>\nCurrent-loop signals are widely used in industrial environments because they are well suited for transmitting measurements over relatively long cable distances.\n<\/p>\n<p>\nAdvantages can include:\n<\/p>\n<ul>\n<li>Good resistance to electrical interference<\/li>\n<li>Reduced sensitivity to voltage drop in long wiring<\/li>\n<li>Simple fault detection in 4\u201320 mA systems<\/li>\n<li>Wide compatibility with industrial transmitters<\/li>\n<li>Reliable operation in process-control environments<\/li>\n<\/ul>\n<h3>Active Sensor Connection<\/h3>\n<p>\nAn active current-output sensor provides its own powered output signal.\n<\/p>\n<p>\nA typical connection is:\n<\/p>\n<p>\n<strong>Active Sensor Output \u2192 NI-9208 AI Channel<\/strong><br \/>\n<strong>Sensor Return \u2192 NI-9208 COM<\/strong>\n<\/p>\n<p>\nThe Vsup terminal is generally not required to power an active sensor that already has its own power source.\n<\/p>\n<h3>Passive Sensor Connection<\/h3>\n<p>\nPassive two-wire transmitters typically require an external loop power supply.\n<\/p>\n<p>\nThe NI-9208 Vsup terminals can be used to route an appropriate external power supply through the measurement system.\n<\/p>\n<p>\nA simplified architecture is:\n<\/p>\n<p>\n<strong>External Supply \u2192 Vsup \u2192 Passive Transmitter \u2192 AI Channel \u2192 NI-9208<\/strong>\n<\/p>\n<p>\nAlways verify the transmitter, power supply, wiring, and NI-9208 electrical specifications before making connections.\n<\/p>\n<h3>50\/60 Hz Noise Rejection<\/h3>\n<p>\nIndustrial facilities commonly contain electrical interference associated with 50 Hz or 60 Hz AC power systems.\n<\/p>\n<p>\nThe NI-9208 high-resolution mode provides rejection of these frequencies, helping improve measurement stability for low-speed process signals.\n<\/p>\n<p>\n\u0422\u0438\u043f\u0438\u0447\u043d\u044b\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0442:\n<\/p>\n<ul>\n<li>\u041c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433 \u0442\u0435\u043c\u043f\u0435\u0440\u0430\u0442\u0443\u0440\u044b<\/li>\n<li>Pressure monitoring<\/li>\n<li>Flow measurement<\/li>\n<li>Level measurement<\/li>\n<li>Long-term process monitoring<\/li>\n<\/ul>\n<h3>\u041f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u044b\u0439 \u043c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432<\/h3>\n<p>\nThe NI-9208 is particularly well suited for industrial process measurement because many industrial transmitters provide standard 4\u201320 mA outputs.\n<\/p>\n<p>\nOne module can monitor up to 16 compatible current signals, such as:\n<\/p>\n<p>\n<strong>CH0 \u2192 Pressure Transmitter<\/strong><br \/>\n<strong>CH1 \u2192 Flow Transmitter<\/strong><br \/>\n<strong>CH2 \u2192 Level Transmitter<\/strong><br \/>\n<strong>CH3 \u2192 Temperature Transmitter<\/strong><br \/>\n<strong>CH4\u2013CH15 \u2192 Additional Process Sensors<\/strong>\n<\/p>\n<h3>CompactDAQ Applications<\/h3>\n<p>\nWhen installed in a compatible CompactDAQ chassis, the NI-9208 can be used for PC-based industrial data acquisition and logging.\n<\/p>\n<p>\nA typical system can include:\n<\/p>\n<ul>\n<li>CompactDAQ chassis<\/li>\n<li>NI-9208 current input module<\/li>\n<li>Additional C Series measurement modules<\/li>\n<li>Host computer<\/li>\n<li>\u041d\u0418-DAQmx<\/li>\n<li>LabVIEW or compatible application software<\/li>\n<\/ul>\n<h3>CompactRIO Applications<\/h3>\n<p>\nThe NI-9208 can also be integrated into compatible CompactRIO systems for embedded industrial measurement and monitoring.\n<\/p>\n<p>\nA typical architecture is:\n<\/p>\n<p>\n<strong>Industrial Sensors \u2192 NI-9208 \u2192 CompactRIO \u2192 Real-Time \/ FPGA System \u2192 Monitoring or Control<\/strong>\n<\/p>\n<p>\nThis configuration can be useful for distributed monitoring, embedded data acquisition, industrial automation, and machine-monitoring applications.\n<\/p>\n<h3>NI-9208 vs NI-9203<\/h3>\n<p>\nThe NI-9208 and NI-9203 are both C Series current input modules, but they target different measurement requirements.\n<\/p>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>\u041d\u0418-9208<\/th>\n<th>\u041d\u0418-9203<\/th>\n<\/tr>\n<tr>\n<td>Current Inputs<\/td>\n<td><strong>16<\/strong><\/td>\n<td>8<\/td>\n<\/tr>\n<tr>\n<td>Current Range<\/td>\n<td>\u00b120 mA Class<\/td>\n<td>\u00b120 mA Class<\/td>\n<\/tr>\n<tr>\n<td>\u0420\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0435<\/td>\n<td><strong>24 Bit<\/strong><\/td>\n<td>16 Bit<\/td>\n<\/tr>\n<tr>\n<td>Maximum Sampling Rate<\/td>\n<td>500 S\/s<\/td>\n<td><strong>200 kS\/s<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Primary Strength<\/td>\n<td><strong>High Channel Density \/ Resolution<\/strong><\/td>\n<td><strong>Higher-Speed Acquisition<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Typical Application<\/td>\n<td>\u041c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432<\/td>\n<td>Faster Current Measurements<\/td>\n<\/tr>\n<\/table>\n<h3>NI-9208 vs NI-9253<\/h3>\n<p>\nThe NI-9208 and NI-9253 are both 24-bit C Series current input modules, but they are optimized for substantially different acquisition requirements.\n<\/p>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>\u041d\u0418-9208<\/th>\n<th>\u041d\u0418-9253<\/th>\n<\/tr>\n<tr>\n<td>Input Channels<\/td>\n<td><strong>16<\/strong><\/td>\n<td>8<\/td>\n<\/tr>\n<tr>\n<td>Current Range<\/td>\n<td>\u00b120 \u043c\u0410<\/td>\n<td>\u00b120 \u043c\u0410<\/td>\n<\/tr>\n<tr>\n<td>\u0420\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0435<\/td>\n<td>24 Bit<\/td>\n<td>24 Bit<\/td>\n<\/tr>\n<tr>\n<td>Sampling Architecture<\/td>\n<td>Multiplexed<\/td>\n<td>\u0421\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u044b\u0439<\/td>\n<\/tr>\n<tr>\n<td>Maximum Sampling<\/td>\n<td>500 S\/s Aggregate<\/td>\n<td><strong>50 kS\/s\/ch<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Primary Strength<\/td>\n<td><strong>16-Channel Process Monitoring<\/strong><\/td>\n<td><strong>High-Speed Simultaneous Current Measurement<\/strong><\/td>\n<\/tr>\n<\/table>\n<p>\nChoose the NI-9208 when channel density and low-speed process monitoring are the priority. Choose the NI-9253 when substantially higher per-channel sampling rates and simultaneous acquisition are required.\n<\/p>\n<h3>NI-9208 vs NI-9207<\/h3>\n<p>\nThe NI-9207 and NI-9208 share several industrial measurement characteristics, but the NI-9207 provides both voltage and current measurement capability while the NI-9208 is focused on current inputs.\n<\/p>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>\u041d\u0418-9208<\/th>\n<th>\u041d\u0418-9207<\/th>\n<\/tr>\n<tr>\n<td>Primary Measurement<\/td>\n<td><strong>Current<\/strong><\/td>\n<td>Voltage + Current<\/td>\n<\/tr>\n<tr>\n<td>Current Measurement<\/td>\n<td>Supported<\/td>\n<td>Supported<\/td>\n<\/tr>\n<tr>\n<td>\u0420\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0435<\/td>\n<td>24 Bit<\/td>\n<td>24 Bit<\/td>\n<\/tr>\n<tr>\n<td>Maximum Sample Rate<\/td>\n<td>500 S\/s<\/td>\n<td>500 S\/s<\/td>\n<\/tr>\n<tr>\n<td>Best Application<\/td>\n<td><strong>High-Density Current Measurement<\/strong><\/td>\n<td>Mixed Voltage \/ Current Systems<\/td>\n<\/tr>\n<\/table>\n<h3>NI-9208 vs NI-9227<\/h3>\n<p>\nThe NI-9208 should not be confused with the NI-9227. Although both measure current, they are designed for very different signal levels and applications.\n<\/p>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>\u041d\u0418-9208<\/th>\n<th>NI-9227<\/th>\n<\/tr>\n<tr>\n<td>Typical Current Level<\/td>\n<td><strong>mA-Level Process Signals<\/strong><\/td>\n<td>Amp-Level Measurements<\/td>\n<\/tr>\n<tr>\n<td>Typical Application<\/td>\n<td>4\u201320 mA Sensors<\/td>\n<td>Electrical \/ Power Measurement<\/td>\n<\/tr>\n<tr>\n<td>\u041a\u0430\u043d\u0430\u043b\u044b<\/td>\n<td><strong>16<\/strong><\/td>\n<td>4<\/td>\n<\/tr>\n<tr>\n<td>\u0420\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0435<\/td>\n<td>24 Bit<\/td>\n<td>24 Bit<\/td>\n<\/tr>\n<\/table>\n<h3>\u0418\u0437\u043e\u043b\u044f\u0446\u0438\u044f<\/h3>\n<p>\nNI-9208 isolation specifications depend on the connector version.\n<\/p>\n<p>\nThe spring-terminal configuration provides up to <strong>250 Vrms channel-to-earth ground isolation<\/strong>, while the D-SUB configurations are specified with <strong>60 VDC channel-to-earth ground isolation<\/strong>.\n<\/p>\n<p>\nThis difference is important when selecting a module for industrial installations with higher common-mode or safety requirements.\n<\/p>\n<h3>Operating Environment<\/h3>\n<p>\nThe NI-9208 is designed for industrial environments and supports an operating temperature range of approximately <strong>-40 \u00b0C \u0434\u043e 70 \u00b0C<\/strong>.\n<\/p>\n<p>\nA conformal-coated D-SUB configuration is also available for applications where additional environmental protection of the electronics is required.\n<\/p>\n<h3>NI-DAQmx Integration<\/h3>\n<p>\nWhen used with compatible CompactDAQ hardware, the NI-9208 can be configured through <strong>\u041d\u0418-DAQmx<\/strong>.\n<\/p>\n<p>\nTypical software operations include:\n<\/p>\n<ul>\n<li>Create current input channels<\/li>\n<li>Configure measurement ranges<\/li>\n<li>Select acquisition mode<\/li>\n<li>Configure timing<\/li>\n<li>Acquire measurements<\/li>\n<li>Scale current values to engineering units<\/li>\n<li>Log data<\/li>\n<li>Generate alarms<\/li>\n<\/ul>\n<h3>LabVIEW Integration<\/h3>\n<p>\nThe NI-9208 can be integrated into compatible <strong>\u041b\u0430\u0431\u0412\u044c\u044e<\/strong> applications for industrial measurement and monitoring.\n<\/p>\n<p>\nFor example, a LabVIEW application can convert a 4\u201320 mA signal into engineering units such as:\n<\/p>\n<ul>\n<li>\u00b0C<\/li>\n<li>bar<\/li>\n<li>MPa<\/li>\n<li>L\/min<\/li>\n<li>m\u00b3\/h<\/li>\n<li>mm<\/li>\n<li>Percent full scale<\/li>\n<\/ul>\n<h3>Converting 4\u201320 mA to Engineering Units<\/h3>\n<p>\nIndustrial transmitters normally map the 4\u201320 mA signal to a physical measurement range.\n<\/p>\n<p>\nFor example, if a pressure transmitter is configured as:\n<\/p>\n<p>\n<strong>4 mA = 0 bar<\/strong><br \/>\n<strong>20 mA = 100 bar<\/strong>\n<\/p>\n<p>\nthe acquired current can be mathematically scaled into pressure values inside the measurement software.\n<\/p>\n<p>\nThis allows the NI-9208 to serve as the current measurement interface while software displays the actual engineering quantity.\n<\/p>\n<h3>Signal Wiring Considerations<\/h3>\n<p>\nBefore connecting current-loop devices to the NI-9208, verify:\n<\/p>\n<ul>\n<li>Current range<\/li>\n<li>Active or passive transmitter type<\/li>\n<li>External loop supply voltage<\/li>\n<li>Vsup wiring<\/li>\n<li>AI channel wiring<\/li>\n<li>COM connection<\/li>\n<li>Grounding<\/li>\n<li>Isolation requirements<\/li>\n<li>Connector type<\/li>\n<li>Cable shielding<\/li>\n<\/ul>\n<h3>Troubleshooting NI-9208 Measurements<\/h3>\n<p>\nIf the NI-9208 produces incorrect or unstable measurements, check the complete current loop.\n<\/p>\n<ol>\n<li>Verify that the module is detected by the chassis.<\/li>\n<li>Confirm the correct analog input channel.<\/li>\n<li>Verify whether the sensor is active or passive.<\/li>\n<li>Check the external loop power supply.<\/li>\n<li>Confirm AI and COM wiring.<\/li>\n<li>Check Vsup wiring when powering passive transmitters.<\/li>\n<li>Verify the expected current range.<\/li>\n<li>Check for open-loop wiring.<\/li>\n<li>Verify grounding and shielding.<\/li>\n<li>Use high-resolution mode when 50\/60 Hz interference is significant.<\/li>\n<\/ol>\n<h3>How to Choose a C Series Current Input Module<\/h3>\n<p>\nBefore selecting the NI-9208, determine:\n<\/p>\n<ul>\n<li>Required number of current input channels<\/li>\n<li>Required current range<\/li>\n<li>Required sampling rate<\/li>\n<li>Required resolution<\/li>\n<li>Whether simultaneous sampling is required<\/li>\n<li>4\u201320 mA transmitter type<\/li>\n<li>Active or passive sensor wiring<\/li>\n<li>Isolation requirements<\/li>\n<li>Spring-terminal or D-SUB connection<\/li>\n<li>Environmental requirements<\/li>\n<li>CompactDAQ or CompactRIO compatibility<\/li>\n<li>Software and driver compatibility<\/li>\n<\/ul>\n<h3>Industries<\/h3>\n<ul>\n<li>\u041f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0430\u044f \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0437\u0430\u0446\u0438\u044f<\/li>\n<li>Process Control<\/li>\n<li>Oil and Gas<\/li>\n<li>Energy<\/li>\n<li>Water Treatment<\/li>\n<li>Manufacturing<\/li>\n<li>Building Automation<\/li>\n<li>Environmental Monitoring<\/li>\n<li>Automated Test<\/li>\n<li>Research and Development<\/li>\n<\/ul>\n<h3>Applications<\/h3>\n<h4>4\u201320 mA Sensor Measurement<\/h4>\n<p>\nThe NI-9208 provides high-density measurement of standard 4\u201320 mA industrial transmitter signals.\n<\/p>\n<h4>\u041c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432<\/h4>\n<p>\nSixteen current inputs allow one module to monitor multiple pressure, flow, level, temperature, and other process transmitters.\n<\/p>\n<h4>Industrial Data Acquisition<\/h4>\n<p>\nThe NI-9208 can be combined with compatible CompactDAQ or CompactRIO hardware to create modular industrial data acquisition systems.\n<\/p>\n<h4>Machine Monitoring<\/h4>\n<p>\nCurrent-output sensors installed on industrial machinery can be monitored and logged through the NI-9208.\n<\/p>\n<h4>Environmental Monitoring<\/h4>\n<p>\nThe module can acquire current signals from compatible environmental sensors and transmitters used for long-duration monitoring.\n<\/p>\n<h4>Distributed Measurement<\/h4>\n<p>\nCompactRIO systems equipped with NI-9208 modules can be deployed as distributed measurement nodes for industrial processes and equipment.\n<\/p>\n<h3>Recommended Related Products<\/h3>\n<table>\n<tr>\n<td width=\"220\"><strong>\u041d\u0418-9208<\/strong><\/td>\n<td>16-channel, 24-bit current input module optimized for high-density \u00b120 mA and 4\u201320 mA process measurement.<\/td>\n<\/tr>\n<tr>\n<td><strong>\u041d\u0418-9203<\/strong><\/td>\n<td>8-channel current input module for applications requiring substantially higher acquisition speed.<\/td>\n<\/tr>\n<tr>\n<td><strong>\u041d\u0418-9253<\/strong><\/td>\n<td>8-channel, 24-bit, 50 kS\/s\/ch current input module for high-speed simultaneous current measurement.<\/td>\n<\/tr>\n<tr>\n<td><strong>\u041d\u0418-9207<\/strong><\/td>\n<td>C Series module combining voltage and current input capability for mixed industrial signals.<\/td>\n<\/tr>\n<tr>\n<td><strong>\u041d\u0418-9265<\/strong><\/td>\n<td>C Series current output module for generating industrial analog current signals.<\/td>\n<\/tr>\n<\/table>\n<h3>Why Choose NI-9208?<\/h3>\n<ul>\n<li>16 analog current input channels<\/li>\n<li>\u00b120 mA current measurement<\/li>\n<li>Ideal for 4\u201320 mA industrial transmitters<\/li>\n<li>24-\u0431\u0438\u0442\u043d\u043e\u0435 \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u0410\u0426\u041f<\/li>\n<li>500 S\/s aggregate acquisition<\/li>\n<li>High-resolution acquisition mode<\/li>\n<li>50\/60 Hz noise rejection<\/li>\n<li>External sensor power routing through Vsup<\/li>\n<li>Active and passive sensor support<\/li>\n<li>High channel density<\/li>\n<li>Spring-terminal configuration available<\/li>\n<li>D-SUB configuration available<\/li>\n<li>Conformal-coated configuration available<\/li>\n<li>Wide industrial operating temperature range<\/li>\n<li>Suitable for CompactDAQ<\/li>\n<li>Suitable for CompactRIO<\/li>\n<li>Suitable for industrial process monitoring<\/li>\n<\/ul>\n<h3>Frequently Asked Questions<\/h3>\n<h4>What is the NI-9208?<\/h4>\n<p>\nThe NI-9208 is a 16-channel C Series analog current input module designed for industrial current measurement, including common 4\u201320 mA and 0\u201320 mA process signals.\n<\/p>\n<h4>How many input channels does NI-9208 have?<\/h4>\n<p>\nThe NI-9208 provides <strong>16 single-ended analog current input channels<\/strong>.\n<\/p>\n<h4>What is the current input range of NI-9208?<\/h4>\n<p>\nThe NI-9208 is designed for approximately <strong>\u00b120 mA current measurement<\/strong>, making it suitable for common industrial current-loop signals.\n<\/p>\n<h4>What is the resolution of NI-9208?<\/h4>\n<p>\nThe NI-9208 uses a <strong>24-\u0431\u0438\u0442\u043d\u044b\u0439 \u0410\u0426\u041f<\/strong>.\n<\/p>\n<h4>What is the maximum sampling rate of NI-9208?<\/h4>\n<p>\nThe maximum module sampling rate is <strong>500 S\/s<\/strong>.\n<\/p>\n<h4>Is NI-9208 500 S\/s per channel?<\/h4>\n<p>\nNo. The NI-9208 uses a multiplexed architecture with one ADC. The 500 S\/s maximum rate applies across the module rather than independently to every channel.\n<\/p>\n<h4>Can NI-9208 measure 4\u201320 mA signals?<\/h4>\n<p>\nYes. Measuring 4\u201320 mA industrial current-loop signals is one of the primary applications for the NI-9208.\n<\/p>\n<h4>Can NI-9208 measure 0\u201320 mA signals?<\/h4>\n<p>\nYes. A 0\u201320 mA signal is within the module&#8217;s current measurement range when the complete circuit meets the NI-9208 electrical specifications.\n<\/p>\n<h4>Can NI-9208 measure negative current?<\/h4>\n<p>\nYes. The NI-9208 supports bidirectional current measurement within its specified input range.\n<\/p>\n<h4>Does NI-9208 support 50\/60 Hz rejection?<\/h4>\n<p>\nYes. Its high-resolution mode provides 50\/60 Hz rejection to help reduce power-line interference in low-speed industrial measurements.\n<\/p>\n<h4>Can NI-9208 connect to passive 4\u201320 mA sensors?<\/h4>\n<p>\nYes. Passive sensors can be used with an appropriate external loop supply, and the NI-9208 Vsup terminals can route external power according to the specified wiring configuration.\n<\/p>\n<h4>Can NI-9208 connect to active current-output sensors?<\/h4>\n<p>\nYes. Active and passive sensors can be connected to the same NI-9208 when each signal is wired according to its required configuration.\n<\/p>\n<h4>What are the NI-9208 part numbers?<\/h4>\n<p>\nCommon NI-9208 configurations include <strong>785041-01<\/strong> for the spring-terminal version, <strong>780968-01<\/strong> for the D-SUB version, and <strong>780968-02<\/strong> for the conformal-coated D-SUB version.\n<\/p>\n<h4>What is the difference between NI-9208 785041-01 and 780968-01?<\/h4>\n<p>\nBoth are NI-9208 current input modules, but 785041-01 uses a spring-terminal front connection while 780968-01 uses a D-SUB connection. Their channel-to-earth isolation specifications also differ.\n<\/p>\n<h4>What is NI-9208 780968-02?<\/h4>\n<p>\nPart number 780968-02 is the D-SUB NI-9208 configuration with <strong>conformal coating<\/strong> for additional environmental protection of the electronics.\n<\/p>\n<h4>What is the difference between NI-9208 and NI-9203?<\/h4>\n<p>\nThe NI-9208 provides 16 channels and 24-bit resolution with a 500 S\/s aggregate rate, making it attractive for high-density process monitoring. The NI-9203 provides fewer channels but substantially higher acquisition speed.\n<\/p>\n<h4>What is the difference between NI-9208 and NI-9253?<\/h4>\n<p>\nThe NI-9208 provides 16 channels and is optimized for high-density, relatively low-speed process monitoring. The NI-9253 provides eight channels with 24-bit simultaneous acquisition at up to 50 kS\/s\/ch, making it more suitable for higher-speed current measurements.\n<\/p>\n<h4>Can NI-9208 be used with CompactDAQ?<\/h4>\n<p>\nYes. The NI-9208 can be installed in compatible CompactDAQ systems for PC-based industrial data acquisition and process monitoring.\n<\/p>\n<h4>Can NI-9208 be used with CompactRIO?<\/h4>\n<p>\nYes. The NI-9208 can also be used with compatible CompactRIO systems for embedded and distributed industrial measurement applications.\n<\/p>\n<h4>What should I check before purchasing NI-9208?<\/h4>\n<p>\nVerify the required channel count, current range, acquisition speed, active or passive sensor configuration, external loop power requirements, isolation requirements, spring-terminal or D-SUB connection, conformal coating requirement, chassis compatibility, wiring accessories, and software compatibility.\n<\/p>\n<h3>\u0417\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435<\/h3>\n<p>\n\u0417\u0435\u043c\u043b\u044f <strong>NI-9208 16-Channel C Series Current Input Module<\/strong> combines high channel density, \u00b120 mA-class current measurement, 24-bit resolution, a 500 S\/s multiplexed acquisition architecture, and high-resolution 50\/60 Hz noise rejection. It is particularly well suited for 4\u201320 mA industrial transmitters, process monitoring, machine monitoring, environmental measurement, industrial data acquisition, and CompactDAQ or CompactRIO systems.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u041c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0435 \u041a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0414\u0438\u0444\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0445 \u0410\u043d\u0430\u043b\u043e\u0433\u043e\u0432\u044b\u0445 \u0412\u0445\u043e\u0434\u043d\u044b\u0445 \u041a\u0430\u043d\u0430\u043b\u043e\u0432: 0<br \/>\n\u041c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u043e\u0434\u043d\u043e\u0441\u0442\u043e\u0440\u043e\u043d\u043d\u0438\u0445 \u0430\u043d\u0430\u043b\u043e\u0433\u043e\u0432\u044b\u0445 \u0432\u0445\u043e\u0434\u043e\u0432: 16<br \/>\n\u0412 \u043a\u043e\u043c\u043f\u043b\u0435\u043a\u0442 \u0432\u0445\u043e\u0434\u0438\u0442: \u0414\u0430<br \/>\n\u0410\u043d\u0430\u043b\u043e\u0433\u043e\u0432\u043e\u0435 \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u0432\u0445\u043e\u0434\u0430: 24 \u0431\u0438\u0442\u0430<br \/>\n\u041c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u0430\u044f \u0447\u0430\u0441\u0442\u043e\u0442\u0430 \u0434\u0438\u0441\u043a\u0440\u0435\u0442\u0438\u0437\u0430\u0446\u0438\u0438: 500 \u043e\u0442\u0441\u0447\u0435\u0442\u043e\u0432\/\u0441<br \/>\n\u0418\u0437\u043c\u0435\u0440\u0435\u043d\u0438\u0435 \u0442\u043e\u043a\u0430: \u043e\u0442 -20 \u043c\u0410 \u0434\u043e 20 \u043c\u0410<\/p>","protected":false},"featured_media":31022,"template":"","meta":{"_acf_changed":false},"product_brand":[18],"product_cat":[766],"product_tag":[],"class_list":["post-29473","product","type-product","status-publish","has-post-thumbnail","product_brand-national-instruments","product_cat-c-series-analog-input-module","first","instock","featured","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>NI-9208 C Series Current Input Module 780968-02, In Stock | Project Pricing<\/title>\n<meta name=\"description\" content=\"NI-9208 is a 16-channel C Series current input module with \u00b120 mA measurement, 24-bit resolution, 500 S\/s sampling and 50\/60 Hz noise rejection for industrial data acquisition.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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