SZA400EX-24 EGE-Elektronik Explosion-proof Flow Sensor Amplifier

Description SZA400EX-24 EGE-Elektronik Explosion-proof Flow Sensor Amplifier Product Dimensions： Product Description (Detailed Explanation) The SZA400EX-24 is an intrinsically safe (IS) amplifier designed for rail mounting within a control cabinet located in a non-hazardous area. It is specifically engineered to interface with EGE’s series of flow sensors located in Zone 0 or Zone 1 (gas) and Zone 20 or Zone 21 (dust). Operating on the thermodynamic principle, the amplifier monitors the cooling effect of a flowing medium on a heated sensor tip. When the flow rate exceeds or falls below a user-defined threshold, the SZA400EX-24 triggers a relay or transistor output. It features built-in LED monitoring for both flow status and system errors (such as cable breaks or short circuits). Product Parameters (Technical Specifications) Parameter Category Specification Supply Voltage 24V DC (± 15%) Ex-Protection (Output) [Ex ia Ga] IIC / [Ex ia Da] IIIC Installation Site Non-hazardous area (Control Cabinet) Output Type Relay (Change-over) Switching Voltage Max. 250V AC / 60V DC Switching Current Max. 2A AC / 2A DC Temperature Range -20°C to 60°C Sensor Connection Compatible with EGE STS / ST series Ex-sensors Housing Material Polycarbonate (IP20) Mounting DIN Rail (TS35) Product Advantages (Key Benefits) Certified Safety: Provides a galvanic isolation barrier between the hazardous area and the control room, complying with strict ATEX and IECEx standards. Intelligent Monitoring: Features an integrated cable-break and short-circuit monitoring system. If the sensor cable is damaged, the relay drops out immediately to ensure a “fail-safe” state. Precision Tuning: Includes a multi-turn potentiometer for fine-tuning the switching point, allowing for highly accurate flow detection even in low-flow conditions. Clear Diagnostics: The front panel includes a multi-segment LED display: Red LED: Flow velocity is below the setpoint. Yellow LED: Flow velocity has reached the setpoint (relay active). Green LEDs: Indicate flow reserve (how far above the setpoint the flow is). Wide Compatibility: Works with a variety of EGE thermal sensors suitable for liquids, gases, and aggressive media. Precautions (Important Notes) Installation Location: The SZA400EX-24 must not be installed inside an explosive zone. It must be mounted in a safe area (IP20 environment). Only the connected sensor and its leads may enter the Ex-zone. Separation of Cables: Intrinsically safe (blue) cables leading to the sensor must be kept physically separate from non-intrinsically safe power and signal cables to avoid induction or cross-talk. Power Supply: Ensure the 24V DC power supply is stable. Voltage spikes can damage the sensitive intrinsic safety barriers within the module. Initial Adjustment: The switching point should only be adjusted after the system has reached a stable operating temperature (typically 5–10 minutes after power-up). Product Applications (Typical Use Cases) Chemical & Petrochemical: Monitoring the flow of cooling water or chemical additives in explosive environments. Oil & Gas Processing: Detecting the presence of flow in flare gas lines or ventilation ducts in refineries. Pharmaceutical Industry: Managing flow rates in solvent-based extraction processes where volatile vapors are present. Painting & Coating Lines: Monitoring airflow in industrial spray booths to ensure flammable vapors are being correctly evacuated. Dust-Prone Areas: Flow monitoring in grain silos or flour mills where combustible dust poses an explosion risk. Shipping Port: Xiamen, China Payment: Bank of Chicago, Bank of Singapore Express cooperation: fedex, DHL, UPS and your express account Service: Professional Sales provides 24 hours /7 days online service Please make an inquiry for more models： ACCURAY 8-061588-002 ADEMCO ADR1600E ADTEC AX-1000-AMII ACCURAY QA-3-017948-003 ADEMCO HRM60N500 ADTRAN 4200663L1 ACCURAY 086370-001 ADEMCO VISTA-250FBP Advanced ICP-16L ACCURAY 086158-004 ADEPT Adept 101 ADVANCED DUO-I8030NM ACCURAY 085221-001 ADEPT AWCII 040 ADVANCED 9R918W3 ACCURAY 061552-001 ADEPT EJI90340-40000 ADVANCED SB1391-C-R-C-A Accu-Sort BoxPC-126M ADEPT SCARA 550 Advanced MN3150272-006 ACME TA-1-81008 ADEPT 10330-11350 Advantech PPC-105T-ABAR ACME TA-1-32406 ADEPT 10332-12350 Advantech FPM-3171G-XCE ACME TA-1-81306 ADEPT ASSY 10350-00100 Advantech WOP-2100T-N2AE ACME T-1-53011 ADEPT ADEPT AWCII 040 ADVANTEST R3265A ACME TA-2-81003 ADEPT AWCII-040 ADVANTEST BLF-022828 ACC-BOARD Acquisition AL81G ADEPT 90402-40013/XY-HRS013-S1B1-AD ADVANTEST BLG-022829 ACS ACS-0400-PS ADEPT 90402-40013 ADVANTEST R6244 ACS SB1381-B-E-R-A-PM2 ADEPT 90400-20055/XY-HRS-055M201 Advantest D3185A ACS SB1381-C-E-R-A ADEPT 90400-02100-EXTB01AD AE RAPID-F ACS SB214ND-F-9 ADEPT 90400-70030 AEG 41-94384 ACS MOTION CONTROL HSSI-I016 ADEPT 90400-71031 AEG M907-122 ACT TCS-SRME-6210-CD-RTM ADEPT 10330-11350 AEG DEP220 ACTION AIOI8100 ADIXEN FM36122 AEG DTA200 ACTUS POWER NPSA-TMTA-222 ADP ADP-1 AEG DTA201 ACUITY 002-PV900 ADRIVE E642B-MGB-K-01 AEG PC-A984-145 ACUITY 010-PV9040 ADTEC 3000III AEG MM-PM22-200 ADC FPL-72RP0W-1448B ADTEC AXR-2000III AEG MM-PM21400C ADDI-DATA APCI-1710 ADTEC AX-2000EUII-N AEG MM-PM21-400 AEG AS-P892-000 AEG M135-H60A-OYOY-G3 AEG PC-E984-381 AEG M344-MKOA-4001 Aerotech U100M-A-40-F5 AEG MM-PM22-300 AEG CGC13-TB AFE DP320T-BC AGIE MJG-2129 AGILENT G2630-66015