AS-2000B-I Combustible gas alarm controller

Product features

★ Standard DC (4 ~ 20) mA signal input， versatility;

★ Wall-mounted installation is simple and easy to operate;

★ Black box function, storing 1000 data;

★ The CPU adopts high-grade single-chip  microcomputer, which has fast running speed and high precision;

★ The product design adopts modular structure design to facilitate the maintenance and maintenance of the controller;

★ Two output relays can be arbitrarily defined as high-reporting and low-report relays;

★ The controller can receive two sets of no power feedback signals;

★ With regular maintenance reminder function（User-set）;

★ 4 detection circuits can shield 1~4 of them;

★ 4 detection circuits are independently powered and have break and short circuit protection;

Technical Parameters

♦ Installation method：Wall-mounted

♦ Display mode：LCD

♦ Measuring range：0～100%LEL，0～1000×10^-6（Full range adjustable），0～35%VOL（Full range adjustable）

♦ Measurement accuracy：≤±1%F.S

♦ Alarm mode：Sound and light alarm

♦ Control quantity：4 detectors

♦ Receiving signal：DC（4～20）mA current signal

♦ Fault signal：≤2mA

♦ Alarm settings： Low limit alarm ：adjustable（the factory default 25% of full scale）   High limit alarm ：adjustable（the factory default 50% of full scale）

♦ Output Voltage：DC 24V±10%

♦Record alarm information：Can store 1000 pieces of information，the oldest record automatically cleared after 1000

♦ Communication interface：RS-485

♦ Operating voltage：Automatic switching of mains and backup power (backup power is optional)

Main power：AC 187V～242V   

Backup power：2.3AH/12V、2knots

♦ Power consumption：＜ 15W

♦Output control：2 sets of dual contact outputs, and can be programmed into logic  （Capacity:1A/125VAC、2A/30VDC），

♦ Transmission distance：1.5km（Loop resistance＜20Ω）

♦ Ambient Temperature： （0～+40）℃   

♦ Relative Humidity：（10～95）%RH   

♦ Pressure Range：（86～106）kPa

♦ Weight：5.0kg/6.65kg（with backup battery）

♦ Package size：430mm×320mm×185mm

Dimensions and installation size

System composition

Terminal block description