VRAE Observing the gas detector [PGM-7800/7840] 

 Automatic backlight display, easy to use dark 
 Built-in powerful suction pump 
 Optional Flammable LEL / VOL Sensor, dual range detection of automatic switching 
 Use high-capacity lithium battery and alkaline batteries, work long hours 
 High Brightness LED and loud sound alarm 
 High-capacity data acquisition 

 Technical Specifications 
 Physical 
 Size 21 × 7.6 × 4.9 cm 
 Weight 568g (with battery) 
 Basic performance 
 Pump suction sampling methods 
 Housing material plastic, rubber jacket 
 Protection grade IP55, waterproof and dustproof 
 Security Level UL / cUL certification: Class I, Division 1, Group A, B, C, D 
 ATEX Certified: EEx ia IIC T2 
 Anti-electromagnetic radiation EMI / RF Level: EMC Directive 89/336/EEC 
 Ambient temperature -20 o C ~ 45 o C 
 Humidity 0% ~ 95% relative humidity (no condensation) 
 Sensor parameters 
 Sensor configuration ? PGM-7800: 1 个 LEL or LEL / VOL gas sensor can be, an EC sensor to detect oxygen, three EC sensors to detect toxic gases 
 ? PGM-7840: 1 个 LEL or LEL / VOL gas sensor can detect the four EC sensors to detect toxic gases 
 Sensor range (%) Resolution (%) Response time (T90 s) to detect errors (calibration points) 
 O2 0-30 0.1 15 <± 5% 
 LEL 0-100 1 15 
 LEL / VOL 0-100/0-100 1 20 
 Sensor range (ppm) Resolution (ppm) response time (T90 s) to detect errors (calibration points) 
 CO 0-500 1 40 <± 5% 
 H2S 0-100 1 30 
 SO2 0-20 0.1 25 
 NO 0-250 1 30 
 NO2 0-20 0.1 25 
 Cl2 0-10 0.1 60 
 HCN 0-100 1 100 
 PH3 0-5 0.1 60 
 NH3 0-50 1 150 
 ClO2 0-1 0.1 150 
 Display and Operation 
 Display 2 line, 16 digit LCD display, automatic backlight 
 Display Language English + sign 
 Display the sensor name (up to five), the value of real-time detection, all detected the highest and lowest values, TWA / STEL values ??(except for oxygen and gas), battery voltage, time remaining data storage 
 1 operation key keys, 2 function keys 
 Alarm parameters 
 Alarm 95dB @ 30cm buzzer, flashing red LED 
 Alarm high / low concentration alarm, TWA / STEL alarm (except for oxygen and gas), low battery alarm, sensor failure alarm, pump blockage alarm 
 Set separate alarm set point high / low alarm limits, TWA / STEL alarm limit (except for oxygen and gas) 
 Data storage and communication parameters 
 Data storage can store 16,000 readings (1 minute intervals 54 hours, 5 gas) 
 Adjustable sampling interval 1 to 3600 seconds 
 Data communication via RS232 interface with computer connection for data download 
 Pump 
 Way built-in pump 
 Pump flow 250cc/min (low) -400cc/min (high speed) 
 Power supply 
 Rechargeable battery Ni-MH battery 4.8V/1250mAh 
 Alkaline battery adapter, 4 AA alkaline batteries with 
 Running time can work for 10 hours (depending on the working environment and frequency of use) 
 Battery charging time 10 hours 
 Calibration 
 Zero Calibration mode / extended calibration 

 PGM-2000 host, with the specified sensor 
 Lithium battery, charger 
 Rubber boot 
 Intake manifold and water trap filter 
 Operating Instructions 
 Information and software CD-ROM 
 Soft Carrying Case 
 A combustible gas sensor 
 Sensorless 
 TC sensor (0-100% LEL/0-100% VOL) 
 LEL sensor (0-100% LEL) 
 B oxygen sensor / gas sensor 4 
 Sensorless 
 O2 sensor (0-30% VOL) 
 H2S Sensor (0-100ppm) 
 CO sensor (0-500ppm) 
 SO2 sensor (0-20ppm) 
 HCN sensor (0-100ppm) 
 PH3 Sensor (0-50ppm) 
 C gas sensor 1 
 Sensorless 
 H2S Sensor (0-100ppm) 
 CO sensor (0-500ppm) 
 SO2 sensor (0-20ppm) 
 NO sensor (0-250ppm) 
 NO2 sensor (0-20ppm) 
 Cl2 sensor (0-10ppm) 
 HCN sensor (0-100ppm) 
 NH3 sensor (0-50ppm) 
 PH3 Sensor (0-50ppm) 
 ClO2 sensor (0-1ppm) 
 HCI sensor (0-10ppm) 
 D 2 gas sensor 
 Sensorless 
 H2S Sensor (0-100ppm) 
 CO sensor (0-500ppm) 
 SO2 sensor (0-20ppm) 
 NO sensor (0-250ppm) 
 NO2 sensor (0-20ppm) 
 Cl2 sensor (0-10ppm) 
 HCN sensor (0-100ppm) 
 NH3 sensor (0-50ppm) 
 PH3 Sensor (0-50ppm) 
 HCI sensor (0-10ppm) 
 E 3 gas sensor 
 Sensorless 
 H2S Sensor (0-100ppm) 
 CO sensor (0-500ppm) 
 SO2 sensor (0-20ppm) 
 NO sensor (0-250ppm) 
 NO2 sensor (0-20ppm) 
 Cl2 sensor (0-10ppm) 
 HCN sensor (0-100ppm) 
 NH3 sensor (0-50ppm) 
 PH3 Sensor (0-50ppm) 
 HCI sensor (0-10ppm) 
 F Power Configuration 
 Standard nickel-metal hydride battery 
 Alkaline Battery 
 Ni-MH battery, no charger 
 G Calibration Kit 
 No kit 
 Calibration gas kit 

 Note: 
 1, can be gas / oxygen sensor and gas sensor can not be interchangeable. 
 2. ClO2 and H2S can not be installed. 
 3, the gas sensor arranged in chronological order according to numbers, that is B <= C <= D <= E. 

 Optional Accessories 
 TC sensor (0-100% LEL / VOL) 
 SO2 sensor (0-20ppm) 
 NO sensor (0-250ppm) 
 NO2 sensor (0-20ppm) 
 CI2 sensor (0-10ppm) 
 HCN sensor (0-100ppm) 
 NH3 sensor (0-50ppm) 
 PH3 Sensor (0-5ppm) 
 CIO2 sensor 0-1ppm 
 HCI sensor (0-10ppm) 
 Scalable sampling probe (with 3m Teflon tube) 
 Sampling probe can be curly (with 2m Teflon tube can be coiled) 
 Polyethylene sampling tube (2mm diameter, 5m) 
 Polyethylene tube (diameter 3mm, 1m) for 
 Teflon tube (diameter 1.6mm, 1m) for 
 Hard carrying case 
 Kit 
 Dust filter (30 pcs / bag) 
 Four gas standard gas mixture 
 Four gas mixed standard gas (58L aluminum bottle, 50% LEL Methane) 
 Ordinary constant current valve (C-10 male) 
 Constant self-priming valve (C-10 male) 
 Ordinary constant current valve (CGA-600 female) 
 Constant self-priming valve (CGA-600 female) 
 Standard gas tank (installed two bottles of gas) 

 Confined space entry testing 
 Petroleum and petrochemical, metallurgy, paper and other industries 
 Industrial safety monitoring 
 Detection of dangerous substances