Check the listing for details. 16 bit A/D DAQ Module/Amplifier 0 to 50V PC interface (RS-485) Isolated AD 6B12. Condition: Seller refurbished. Listed at 49.95 USD. Ready to go analog data acquisition module capable of measuring mV to 50V or 0-20mA Ideal for monitoring Solar, Batteries, Temperature, or any analog sensor with mV or mA output. RS-485 interface allows up to 4000 ft distance to host PC. Connect up to 32 modules to one port. Simple ASCII commands and results in engineering units.Supported by NI Labview and Labtech software User manual: https://www.analog.com/media/en/technical-documentation/.user-guides/6BSeriesUserManual.pdf A chassis that can hold up to 16 modules is available separately (FREE with 10 UNIT ORDER) Also available 6B11 module compatible with thermocouple inputs and High voltage version (6B12HV) is available (2000V isolation) RS-485 Interface The 6B12 and 6B12HV are single-channel isolated signal-conditioning modules which receive millivolt, voltage and process current signals. Unlike conventional signal conditioners, the 6B12 and 6B12HV are complete microcomputer-based data acquisition systems. A major advantage of the on-board microcontroller is its ability to be reconfigured for various sensor types and input ranges.Synchronized SamplingThe synchronized sampling command allows data to be sampled simultaneously from all 6B11, 6B11HV, 6B12, 6B12HV modules and all 6B50 boards in a 6B Series system. Each module or board stores the data in a separate register within its microcontroller and can access the data with a separate command.Software ConfigurationThe 6B12 and 6B12HV digitize millivolt and voltage ranges from ±150 mV to ±50 V as well as 0 to ±20 mA process current inputs. Software is used to configure the 6B12 and 6B12HV modules for address, input range, baud rate, data format, checksum status and integration time. All programmable parameters are stored in the nonvolatile memory of the module.Inside the 6B12 and 6B12HVEach analog input signal is conditioned and scaled by a programmable-gain amplifier and digitized by a 16-bit integrating converter under microprocessor control. The digitized value is passed serially across a magnetically isolated barrier (1500 V rms - Model 6B12; 2500 V rms - Model 6B12HV) and clocked in by a custom controller chip. The on-board microprocessor then converts the data into engineering units as determined by the channel parameters. In between conversions, the microprocessor auto zeros the offset and gain by monitoring the on-board temperature and compensating for reference drift. The 6B12 and 6B12HV use compensation factors to ensure the highest accuracy possible.Inputs and CommunicationsFigure 1. 6B12/6B12HV Functional Block DiagramFigure 2. 6B12 and 6B12HV Field Connection DiagramInputsCommunicationsMillivolt: ±150 mV to ±500 mVVoltage: ±1 V; ±50 VCurrent: ±20 mARS-485-InterfaceAvailable Models Range Description(Software Configurable)Accuracy1(Typical) Error(Maximum) Noise(Peak to Peak)±150 mV±0.03 % FS±0.06 % FS±0.02 % FS±500 mV ±0.01 % FS±0.04 % FS±0.008 % FS ±1 V ±0.006 % FS±0.03 % FS ±0.007 % FS ±5 V±0.006 % FS ±0.03 % FS ±0.006 % FS ±10 V±0.006 % FS ±0.03 % FS ±0.005 % FS ±50 V±0.006 % FS ±0.03 % FS ±0.004 % FS ±20 mA1±0.006 % FS2 ±0.03 % FS2 ±0.007 % FS 1 This range requires the use of a 50 Ω current-to-voltage conversion resistor, model AC1381.2 Does not include the error of the current-to-voltage input resistor, Model AC1381.Specifications6B12 and 6B12HV Specifications(typical @ +25°C and Vs = +5 V dc)DescriptionModel 6B12 and 6B12HV Inputs, Software SelectableVoltage Ranges mV±15 mV to ±500 mV Volt±1 V; ±5 V; ±10 V; ±50 VCurrent Range ±20 mA CommunicationsProtocolRS-485Baud Rates, Software Selectable300K, 600K, 1.2K, 2.4K. 9.6K, 19.2K AccuracyInitial @ +25°CRefer to Model TableInput Offset vs. Temperature±0.3 µV/°CSpan vs. Temperature±10 ppm/°C (±50 ppm/°C, maximum)Input Resistance1 MΩ Bandwidth, -3 dB4 Hz Conversion Rate9 samples /secondSynchronized Sampling Command YesConversion Time 70 ms maximum Common-Mode Voltage (CMV)Input-to-Output and PowerModel 6B12 1500 V rms continuous Model 6B12HV2500 V rms continuous Common-Mode Rejection (CMR) 1 kΩ Source Imbalance @ 50/60 Hz108 dB Normal Mode Rejection (NMR)1 kΩ Source Imbalance @ 50/60 Hz 56 dBInput Protection240 V rms, continuous Input Transient Protection ANSI/IEEE C37.90.1-1989 Power Supply Voltage, Operating+5 V dc ±5% Voltage, maximum safe limit +6.5 V dc Current+100 mA Mechanical Dimensions2.3" x 3.1" x 0.79"(58.4 mm x 78.7 mm x 19.1 mm) EnvironmentalTemperature RangeRated Performance-25°C to +85°C Operating-25°C to +85°C Storage-40°C to +85°CRelative Humidity 0 to 95% @ +60°C noncondensing We respond to inquiries from 8:30 to 6:30 PST, M-Fr (closed on federal holidays)IMPORTANT INFORMATION ABOUT DELIVERY: We cannot ship to an address that doesn't appear on eBay checkout page, NO EXCEPTIONS. RULES for INTERNATIONAL BIDDERS 1. Seller reserves a right to cancel a transaction and refund the payment of a non US registered buyers, if in sellers opinion delivery service or customs clearing process in a country of destination may cause unreasonable delays or result in shipment loss. Exception is outlined in paragraph #4.2. Buyer payments are collected by eBay and not the seller and therefore seller is unable to issue a commercial invoice.3. If a non US registered buyer has a US shipping address registered with eBay, then the seller is only responsible for delivery to the eBay specified shipping address. Any delay, loss or damage for trans-shipped items is not a responsibility of the seller.4. Non US buyers may chose to supply their own prepaid shipping labels (Fedex/DHL/UPS) along with a copy of a commercial invoice. Seller will refund shipping costs paid to eBay after the item reaches it's final delivery point.