The Adtech 403313 is a universal signal conditioner that converts multiple input signal types into a standardized 4-20 mA DC output. It accepts AC voltage, DC voltage, AC current, DC current, frequency, millivolts, potentiometer, RTD, and thermocouple inputs—making it suitable for diverse industrial measurement applications. The unit delivers ±0.1% calibrated accuracy with independent linearity of ±0.02% maximum and operates across -25° to 185°F (-31° to 85°C).
Technical Specifications
Input Signal Types
• AC Voltage (TRMS or average): 10 mV–100 Vrms (0–5 kHz); 50 mV–50 Vrms (5 kHz–30 kHz)
• DC Voltage: 10 mV–100 V; 50 mV–50 V (5 kHz–30 kHz)
• AC/DC Current
• Frequency: 0–30 Hz to 0–30 kHz full scale
• Millivolts, Potentiometer, RTD
• Thermocouple (ISA types B, E, J, K, R, S, T): -20 mV to 100 mV spans
Output & Load
• Output: 4–20 mA DC
• Output ripple: 10 mV peak-to-peak maximum
• Loop drive at 12/24/36/42 VDC: 200/800/1400/1700 ohms maximum
Performance
• Calibrated accuracy: ±0.1% of span
• Linearity: ±0.02% maximum (±0.01% typical)
• Repeatability: ±0.005% maximum (±0.002% typical)
• Zero/span temperature coefficient: ±0.01% of span maximum per °C
• Load effect: ±0.005% of span
• Power supply effect: ±0.005% of span maximum
• Response time (10–90%): 350 milliseconds
• Bandwidth (-3 dB): 1 Hz
Power & Protection
• Supply voltage: 8–42 VDC
• Isolation: 1000 VDC or 600 VAC (input/output/case)
• RFI-resistant; reverse polarity protection
• Thermocouple burnout protection: 0.1 µA nominal (field selectable upscale/downscale)
Operating Conditions
• Temperature range: -25° to 185°F (-31° to 85°C)
• Storage: -40° to 200°F (-40° to 93°C)
– Key Features
• 11 discrete major ranges via switch selection
• Zero suppression/elevation: up to 100% of range
• Span adjustment: 50–100% of range
• Dual multiturn potentiometers for fine zero and span control
• Input/output isolation rated 1000 VDC / 600 VAC
– Typical Applications
Temperature measurement (thermocouple, RTD), frequency monitoring, DC/AC signal conversion, industrial process control, sensor signal standardization to 4–20 mA loops.
– Compatibility & Integration
Designed for loop-powered instrumentation and SCADA systems. Compatible with standard 4–20 mA receivers and controllers operating at 8–42 VDC supplies.
