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Low Gas Alarm System


Low gas alarm panel is used to monitor the low pressure level of cylinder, the contact guage / pressure transmitter used in this system helps to give 4 - 20 mA or NO/NC signal to panel to monitor the cylinder empty and Filled position.

Specifications of low gas alarm system :
  • Fully electronic
  • Dual colour / multi colour LED to show the status of cylinder
  • Pressure set point (user adjustable)
  • External hooter canbe connected
  • Acrylic body enclosure
  • Single or multiple guage connection provision
  • Power supply 230V, 50Hz
  • Micro controller based contact guage
Contact Guage :

Contact guage is used to produce visual and acoustic warning of low gas supply pressure to monitor the cylinder pressure.

Technical Specifications :
  • Measuring element : : Bourbon tube
  • Diameter : 50 mm / 100 mm
  • Design : Chemical-safety version DIN 16063
  • Housing : Brass / SS 316
  • Measuring element : CrNi-steel 1.4571, circular form / copper-zink-alloy
  • Inspection glass : Polycarbonate
  • Nominal pressure : 230 bar/ 300 bar
  • Display range : see guage scale
  • Gas suitability : All gases
  • Contact : inductive slit sensor (in accordance with NAMUR)
  • Protection class : II 2 G EEx ia IIC T6, PTB 99 ATEX 2219 X
  • Connection : NPT 1/4”m outside thread
Pressure Transmitter :

Pressure transmitter is used to produce 4-20 mA to low Gas Alarm Panel to monitor the cylinder pressure.

Technical Specifications :
  • Service : Compatible gases and liquids
  • Wetted materials : Type 316L SS
  • Accuracy : 626: 0.25% FS; 626: 0.20% RSS; 628: 1.0% FS; 628: 0.5% RSS; 626 Absolute Ranges: 0.5% FS; 626 absolute ranges: 0.30% RSS. (Includes linearity, hysteresis and repeatability)
  • Temperature limit : 0 to 2000F (-18 to 930C)
  • Compensated temperature range : 0 to 1750F (-18 to 790C)
  • Thermal Effect : ±0.02% FS/0F Iincludes zero and span)
  • Pressure Limite : see table
  • Power requirements : 10-30 VDC (for 4-20 mA, 0-5, 1-5, 1-6 VDC outputs); 13-30 VDC (for 0-10, 2-10 VDC outputs); 5 VDC ±0.5 VDC (for 0.5-4.5 VDC ratio-metric output), 10-35 VDC (for 4-20 mA with - CB option), 13-35 VDC or isolated 16-33 VAC (for selectable output with - CB option)
  • Response Time : 300 ms
Automatic Mechanical Gas Change Over, PCI Analytics Pvt. Ltd