PN-2000-EX fixed flammable gas alarm Introduction
PN-2000-EX fixed flammable gas alarm, using long-life imported catalytic combustion industrial special sensor, suitable for a variety of harsh industrial environments. Optional functions are mainly, high-brightness sound and light alarm; infrared open cover remote control, flammable and explosive environment operation is more secure; wireless data transmission module and multi-function output alarm signal including relay switch quantity alarm output, current 4- 20MA signal output, corresponding to the RS485 interface, provides standard Modbus protocol. Supporting intelligent acquisition and monitoring software, intelligent monitoring management, monitoring data export, real-time data chart, alarm record query, widely used in gas, petrochemical, metallurgy, environmental protection, fire safety testing; hazardous chemical gas testing; municipal, school, Hospital, factory environmental testing. Features
1.Combustible gas alarm adopts imported high-performance flammable gas sensor, which has good anti-interference performance and has a service life of more than 3 years.
2.The instrument has: 4-20mA/RS485 signal output (national standard Modbus signal output (RS485 interface), relay output, data recovery, data storage (optional) and other functions, can be equipped with software, connected with computer, automatically generate graphs, View historical data, storage time interval can be set by yourself
3.On-site large-screen multi-parameter LCD display with backlight, visual display of gas concentration, type, unit, working status, etc.
4.Independent air chamber, sensor replacement without on-site calibration, automatic identification of sensor key
5.Full range temperature digital automatic tracking compensation to ensure measurement accuracy
6.Full software calibration function, users can also calibrate by themselves, with 4 buttons to achieve, easy to operate, graphical dot matrix pure Chinese operation menu LCD interface.
7.Secondary alarm setting, dual relay signal output: one set of active DC24V output, one set of passive signal output
8.It can be equipped with infrared remote control. The explosion-proof place does not need to open the cover to set the parameters to prevent the danger caused by the electrostatic friction when the cap is screwed. The instrument and infrared remote control receive up to 8 meters, and the operation is safe and reliable. Technical Parameters
Detection gas: flammable gas (EX)
Detection principle: catalytic combustion principle
Installation method: wall-mounted, ducted (thread size: M40X1.5mm), flow-through, pumping optional
Measurement range: 0-100% LEL
Resolution: 0.01% LEL
Accuracy: ≤±3%F.S (actual concentration, higher accuracy depending on the specific sensor)
Repeatability: ≤±1%
Zero drift: ≤ ± 1% (F.S / year)
Response time: ≤ 20 seconds (T90)
Recovery time: ≤ 30 seconds
Output signal: Users can transfer up to 2000 meters (single core 1mm2 shielded cable) according to actual requirements.
1, three-wire 4-20mA current signal output (two-wire system can be customized)
2, RS-485 digital signal output, national standard Modbus signal output
3, dual relay signal output, a set of active DC24V output, a set of passive signal output
4, wireless data signal transmission, can be used in wiring, construction is simple and convenient, easy to achieve long-distance centralized management and monitoring
Connection method: 3/4′′ NPT internal thread
Housing material: die-cast aluminum, explosion-proof, anti-corrosion, anti-oxidation
Explosion-proof mark: ExdII CT6, explosion-proof certificate number: CNEx12.2576
Protection level: IP65
Working power supply: 24VDC
Operating temperature: -40 to +70 ° C (special requirements are customized as needed)
Operating humidity: ≤95% RH, no condensation (humidity >90% RH, with filter)
Working pressure: ≤200Kpa
Size: 183 × 143 × 107mm
Weight: 1.5Kg
Introduction
PN-2000-EX fixed flammable gas alarm, using long-life imported catalytic combustion industrial special sensor, suitable for a variety of harsh industrial environments. Optional functions are mainly, high-brightness sound and light alarm; infrared open cover remote control, flammable and explosive environment operation is more secure; wireless data transmission module and multi-function output alarm signal including relay switch quantity alarm output, current 4- 20MA signal output, corresponding to the RS485 interface, provides standard Modbus protocol. Supporting intelligent acquisition and monitoring software, intelligent monitoring management, monitoring data export, real-time data chart, alarm record query, widely used in gas, petrochemical, metallurgy, environmental protection, fire safety testing; hazardous chemical gas testing; municipal, school, Hospital, factory environmental testing.
