Safety Barrier
1.Intrinsic-safety and explosion-proof
2.High anti-interference ability
3.Low power consumption
MTAW/DGAW Type Thermocouple Input Signal Isolation Safety Barrier
Functional Overview
MTAW/DGAW type thermocouple input signal isolation safety barrier is a modular card loading intrinsic-safe explosion-proof instrument. It restricts dangerous energy entering into dangerous places and transforms
thermoelectrical potential into isolation signal (1-5VDC or 4-20mADC), which has a liner relation with the
temperature. The isolation part adopts magnetic isolation technology that has been approved by the standard
explosion-proof verification authority. Its intrinsic-safe level is (ib)IICT6. Moreover, the main technical
performance index is higher than the domestic similar products.
Technical Parameters
Input: Standard ThermocoupleInput range: ≥3mVDCOutput: 4-20mADC Or 1-5VDCOutput Resistance: 250Ω( 1-5VDC output) >500kΩ(4-20mADC output)Load Resistance: 250-350Ω(4-20mADC output. Please note if you want special load resistance)Accuracy: when measuring range ≥ 50mV, ±0.2 When measuring range<50mV, ±0.5%Cold End Compensation Error: ≤1°CResponse Time: <1s The Maximum Allowable Voltage: 220VAC/DC(Measured under non-intrinsic safety)The Maximum Open-Circuit Voltage:2VDC(Measured under intrinsic safety)The Maximum Short-Circuit Current: 50mA(Measured under intrinsic safety)Zero Adjustment: ZERO potentiometerMeasuring Range: SPAN potentiometerPower: 24VDC ±10%Power Consumption: <1.5WEnvironment Temperature: 0-50°CRelative Humidity: <90%RH(non-condensing)Insulation Resistance: The power, input, output terminals≥100MΩInsulation Intensity: The power, input, output terminals1000VDC/ minuteMaintenance: Instrument can carry electricity pluggable under the condition of installation wiring.Weight: about 150gIntrinsic-Safe Level: (ib)IICT6Dimension: MTAW:29×106×72 (width×height×depth)mmDGAW:23×106×72 (width×height×depth)mmInstrument Installation: Standard 35mmDIN guiding rail car- loading installation
