1、 Overview:
The WMKY-2000Z combustible (toxic) gas alarm controller is a newly launched multi wire or bus combustible gas alarm controller by our company, consisting of the WMKY-2000Z gas alarm controller and the WMKY-2000 gas detector. It has the advantages of reasonable structure, stable reliability, and superior cost-effectiveness. It adopts a new large-scale industrial grade MCU internally, which has fast response speed, strong anti-interference ability, and built-in pure hardware watchdog to ensure the absolute reliability of this controller. Suitable for monitoring and alarm in various workshops, warehouses, tank areas, and other environments.

2、 Function Introduction:
Real time monitoring of detector status, fast alarm response time;
Real time judgment of detector status to reduce the occurrence of false alarms;
◆ Notify users of fault and alarm information through sound alarms;
◆ Real time current signal viewing function;
◆ It has a power outage memory function, which can remember the control parameters and working status before the power outage;
4-20mA or 485 communication can be shared;
The number of channels from one to eight can be set arbitrarily;
◆ Equipped with alarm sound prompt function;

3、 Technical indicators:
3.1 Technical specifications of the controller:
1) Sensor channels: 1-255 channels (usually 8 channels in the branching system),
2) Range selection: %LEL, PPM,
3) Sensor model: WMKY series combustible (toxic) gas detector
4) Linkage routes: pre alarm, alarm
5) Host power consumption: ≤ 50W
6) Working voltage range: 220VDC±15%（50HZ±1）
7) Operating environment temperature: -10 ℃~70 ℃ (indoor)
8) Signal transmission distance: ≤ 1000 meters
9) Dimensions: 310mm * 310mm * 120mm
10) Installation method: Wall mounted

3.2 Detector Technical Specifications:
1) Measurement accuracy: ± 5% F.S,
2) Detecting gases: natural gas, NH3, CO, H2S, SO2, CL2, etc
3) Response time: 20-60 seconds, depending on the test composition and range
4) Repeatability: 3% F.S
5) Output signal: DC（4～20）mA
6) Working power supply: 15-30V DC
7) Environmental temperature: （－10 ～＋50） C
8) Environmental humidity: 90% RH
9) Explosion proof grade: ExdIICT6
10) Whole machine weight: 1.5KG