DT230 series signal conditioners provide two independent I/O channels in a single, space-saving unit. The DT236 model is a dual two-wire transmitter that isolates and converts DC current or low voltage inputs to proportional 4-20mA control signals. Power is received from the output loop current or a DC supply when using a three-wire connection. High-voltage isolation separates all input and output circuits from each other. Isolation protects from surges, reduces noise, and helps eliminate ground loop errors. Setup and calibration are fast and easy with a convenient USB connection to your PC and Acromag’s Windows configuration software. The Android app enables setup with mobile devices. Advanced signal processing capabilities, variable range input/output, and convenient USB programming make this instrument very versatile. These transmitters can withstand harsh industrial environments and operate reliably across a wide temperature range with very low drift. They feature RFI, EMI, ESD, EFT, and surge protection plus low radiated emissions.
Performance SpecificationsIMPORTANT: To prevent ground loop error between a grounded PC and a grounded input signal, Acromag strongly recommends use of a USB isolator like Acromag’s USB-Isolator when configuring a DT230 Series transmitter.
USB InterfaceUSB Connection Type: USB Mini-B type socket, 5-pin Data Rate: 12Mbps. USB v1.1 and 2.0 compatible Maximum cable length: 5.0 meters Transient voltage suppression on power and data lines.
Input (two channels)Default Configuration/Calibration Input: 4 to 20mA, medium filter Output: 4 to 20mA A/D Converters (ADC) Two 24-bit Sigma Delta ADCs (only 16-bits used) Input Ranges: Path A: ±1mA, ±20mA, 0 to 11.17mA, 0-20mA, 4-20mA DC Path B: ±0.5V, 0-500mV DC Ambient Temperature Effect: Better than ±80ppm/°C (±0.008%/°C) Scaling Adjust: Full range Input Impedance: Current input: 24.9 ohms Voltage input: 15M ohms Input Over-Voltage Protection: Bipolar Transient Voltage Suppression (TVS) and diode clamping Input Filter: RC filter plus variable digital filter (none, low, medium, high) Input Bandwidth: -3dB @ 16Hz (no filtering) Noise Rejection (@ 60Hz, no filter): Common Mode: 93dB no filter (139dB high filter) Normal Mode: 6dB no filter (>80dB high filter)
Output (two channels)D/A Converters (DAC): Two 16-bit D/A converters Output Ranges: 4-20mA DC 3.5-24mA under/over-range capability Output Accuracy: ±0.05%, typical. ±0.1%, maximum Output Compliance: Rload = (Vsupply - 7V) / 0.020A Rload = 0 to 850 ohms @ 24V DC Output Response Time (for step input change) Time to reach 98% of output value (typical) No filtering 31 milliseconds Low filter 51 milliseconds Medium filter 152 milliseconds High filter 1100 milliseconds Output Ripple: Less than ±0.1% of output span
EnvironmentalOperating temperature Operation: -40 to 80°C (-40° to 176°F) Storage: -40 to 85°C (-40 to 185°F) Relative humidity: 5 to 95% non-condensing Power Requirement: Loop-powered, 7-32V DC SELV, 24mA max Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input and output circuits Shock and Vibration Immunity: Vibration: 4g, per IEC 60068-2-6 Shock: 25g, per IEC 60068-2-27 Approvals (pending) CE compliant. Designed for UL/cUL Class I Division 2 Groups ABCD, ATEX / IECEx Zone 2, II 3 G Ex nA IIC T4 Gc -40°C < Ta < +80°C Electromagnetic Compatibility (EMC) Compliance Radiated Emissions: BS EN 61000-6-4, CISPR 16 RFI: BS EN 61000-6-2, IEC 61000-4-3 Conducted RFI: BS EN 61000-6-2, IEC 61000-4-6 ESD: BS EN 61000-6-2, IEC 61000-4-2 EFT: BS EN 61000-6-2, IEC 61000-4-4 Surge Immunity: BS EN 61000-6-2, IEC 61000-4-5
PhysicalGeneral: General-purpose enclosure designed for mounting on 35mm “T-type” DIN rail Case Material: Self-extinguishing polyamide, UL94 V-0 rated I/O Connectors: Removable plug-in terminal blocks rated for 12A/250V; AWG #26-12, stranded or solid copper wire Dimensions: 17.5 x 114.5 x 99.0 mm (0.7 x 4.51 x 3.90 inches) Unit weight: 0.16 kg (0.35 pounds) Shipping Weight: 0.22 kg (0.5 pounds) packed
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