Tender For Dgms Approved Explosimeter/ Explosive Gas Detector Must have approval by DGMS for detection of Methane & Carbon Monoxide Gas (CO) in Coal Mines of first, second- & third-degree Gassiness Valid DGMS approval to be submitted Each equipment should have clear marking of DGMS approval number Measuring Range: - The instrument must be designed so as to measure a) 0 PPM to 2000 PPM for CO b) 0.00% to 5% for CH4, (0:00 to 100 LEL) Must have Digital Display, Adjustable Pre & Main Alarm with Battery Charge Indicator Operating temperature-0 Degree C to 50 Degree C Relative Humidity RH-15% to 95% Must have rechargeable Battery with power backup for minimum 12 hrs with recharging time less than 6 hours, with minimum 02 years life & guarantee for free replacement within 02 years Should display the Date of Last Calibration & Due Date of Calibration Auto Audio visual signals for CO exceeding 50 PPM
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