404+
The WatchGas 404+ has been designed with features that effectively respond to the detection of gas hazards in a wide range of environments, from commercial premises to heavy industrial applications requiring hazardous area sensing.
- 1 to 4 sensors;
- Analogue 4-20mA output;
- Two-alarm stages;
Description
Typical monitor locations are public buildings, boiler plant rooms, swimming pools, water treatment works, H&V control systems, manufacturing, and processing plants.
Product information
- Versatile System Configuration;
- Flammable, Oxygen, Refrigerant and Toxic Gases;
- 1 to 4 sensors;
- Plug-in sensor channel cards;
- Two-alarm stages;
- Selectable alarm relays;
- Analogue 4-20mA output;
- Delay to alarm option;
- Remote catalytic flammable sensor option.
| Size | 315mm (W) 265mm (H) 95mm (D) |
| Weight | 3.6KG |
| Temperature | -10 to 50°C |
| Humidity | 0-90 RH (Non condensing) |
| Alarm Signal | Acoustic: Lo, Hi, OR and Fault, 68dB @ 1m, permanent mute option Visual: Power - Green LED Mains Fail - Power Indicator change Green to Amber - when battery fitted Alarms - Red LED and display channel with alarm text Fault - Amber LED Display - Gas Readout, alarm status, gas type, location System Test - Alarm LED's Flashing/Relay |
| Housing & Material | Enclosure: Mild Steel Finish - Powder coat Ash Grey BSA01 |
| Relays | Common Relays • High Alarm RL2 - D.P.C.O normally energised or de-energised- default set ND • Latched or Unlatched - default set latched • Low Alarm RL1 - D.P.C.O. normally energised or de-energised- default set ND • Latched or Unlatched - default set latched • Fault Alarm RL3 - S.P.C.O. normally energised or de-energised- default set ND • Latched or Unlatched - default set latched • Over-range RL4 - S.P.C.O. normally energised or de-energised- default set ND • Latched or Unlatched - default set latched • Global Alarm Relay RL5 - S.P.C.O. changes on all alarms and is resettable at all times • Inhibit Indicator - RL6 - S.P.C.O. contacts 1A@24v DC Channel Relays • High and Low Alarm relays S.P.C.O. normally energised or de-energised- default set ND • Latched or Unlatched - default set |
| Power Supply | 230/115v AC or 24v DC 12 watts - Full Alarm |
| Channels | 1-4 |
| Sensor Inputs | Bridge type 3 wire mv (Catalytic) 2 or 3 wire 4~20mA (Infrared/Catalytic/PID/Semiconductor) |
| Channel Outputs | Analogue output 4-20mA into 200 ohms max load |
| Measurements | Combustible Gas - LEL, %Vol. Toxic Gas - ppm Oxygen - %Vol. - Depletion / Enrichment Refrigerant - ppm Any 4~20mA Transmitter |
| IP Rating | IP52 *IP65 available with over housing* |
| EMS | EMC BS EN 50270 / Low Voltage Directive BS EN 61010-1 |
| Miscellaneous | Remote Accept / Reset System Lamp Test Enclosure - 20mm Cable Entry - Base / Rear Optional Battery Backup - 1 hour Delay to Alarm Option 10s, 30s, 10m |
