DatasheetOverview
XgardIQ is an intelligent and versatile gas detector and transmitter compatible with Crowcon’s full range of sensor technologies. Available fitted with a variety of flammable, toxic or oxygen gas sensors.
Providing analogue 4-20mA and RS-485 Modbus signals as standard, XgardIQ is optionally available with Alarm and Fault relays and HART communications. The 316 stainless steel are available with three M20 or 1/2“NPT cable entries.
(SIL-2) Safety integrity level 2 certified gas detector.
Easy and safe to use
- OLED display – Bright, clear display indicates gas level and detector status even in dark locations
- Non-intrusive calibration – Zero and calibration functions are performed via the display and keypad, without the need for a hot-work permit or any special tools (e.g. no magnetic wand required)
- +ve Safety indicator – Confirms the detector is operating safely at a glance
- Event log function – Stores all alarm, fault and maintenance events to provide a history of detector use
- Remote sensor – Improves probability of detection
Simple installation and maintenance
- Universal transmitter – Common transmitter for Crowcon’s full range of sensor technologies
- Hot-swap sensor modules – Sensors can easily be replaced using one hand without requiring tools or a hot-work permit
- Auto-sense function – Automatically detects whether the control system is 4-20mA current sink or source and sets itself appropriately, eliminating the risk of being incorrectly set
- Auto-configure function – Detects when a sensor module is plugged-in and uploads the appropriate gas type, range, units and alarm levels
Reliability
- Smart Bump and Speedy Bump test functions – Enable sensor health and response to be verified quickly and easily using test gas. Process is automated and provides a reminder when a bump test is due
- Calibration due warning – Reminds the user when calibration is due to ensure that sensors remain operational and accurate at all times
- Sensor range selection – User can set the full-scale range of the sensor via the display menu according to site or specific location requirements.
Specifications
| Size | H278 x W140 x D89mm (10.9 x 5.5 x 3.5 in) |
| Weight | 4.1Kg (9lbs) |
| Enclosure material | 316 stainless steel |
| Ingress protection | IP66 |
| Connection | Three M20 or ½”NPT cable gland entries.Certified, removable plugs are fitted to left-hand and lower righthand entries |
| Power | 14-30 VDC. <4W |
| Display | Main display – OLED 128 x 64 pixels, yellow text on black background Indicators – Amber, Red and Green LED’s for detector status; Blue +ve Safety LED |
| Electrical output | 4-20mA current sink or source (Auto-Sense or manual selection); warning and fault signals are configurable. NAMUR NE 43 compliant RS-485 Modbus RTU HART 7 over 4-20mA signal and via local I.S. test points (optional) Relays (optional) Alarm 1, Alarm 2, Fault SPCO contacts rated 5A, 230Vac Relay configuration options Energised or de-energised Latching or non-latching Rising or falling Configurable On and Off delays on alarm relays. |
| Event logging | Records alarm, fault and maintenance events. Events can be viewed on-screen and downloaded to a PC. |
| Operating temperature | Transmitter only: -40°C to +75°C (-40°F to +167°F)†
Sensor type: Oxygen: (-20°C to +50°C ambient) |
| Humidity | 0 to 95% RH non-condensing† |
| Repeatability | +/- 2% FSD |
| Zero drift | +/- 2% FSD per year maximum |
| Response time | Sensor dependant: contact Crowcon for specific sensor data. |
| Approvals | ATEX and IECEx: Ex II 2 G Ex db ia IIC T4 Gb (see above for temperature ranges) |
| Performance | Designed for compliance with: EN50104 (oxygen sensors) EN45544 (toxic gas sensors)* EN50271 (software) H2S performance standard |
| Functional safety | IEC61508, EN50402 SIL 2 |
| EMC Compliance | EN50270:2015 FCC CFR47 Part 15B ICES-003 |
† Note: sensor operating temperature and humidity limits vary widely.
* Features outstanding at the time of issue, contact Crowcon for details.
Gases and Ranges
| Gas | Units | Max Range |
Standard Range |
Alarm 1 level |
Alarm 2 level |
Temp range °C |
| Oxygen (O2) | %Vol | 30 | 25 | 19 (falling) | 17 (falling) | -20 to +50 |
| Ammonia | PPM | 100/1000 | 50 | 25 | 35 | -20 to +40 |
| Carbon Monoxide (CO) | PPM | 1000 | 250 | 30 | 200 | -30 to +50 |
| Hydrogen Fluoride (HF) | PPM | 10 | 10 | 1.8 | 3 | +5 to +40 |
| Hydrogen Sulphide (H2S) | PPM | 100/200 | 25 | 5 | 10 | -30 to +50 |
| High Temperature Hydrogen Sulphide (H2S) | PPM | 100/200 | 25 | 5 | 10 | -40 to +70 |
| Ozone (O3) | PPM | 1 | 1 | 0.1 | 0.2 | -20 to +40 |
| Sulphur Dioxide (SO2) | PPM | 100 | 10 | 1 | 1 | -30 to +50 |
| Hydrogen (H2) | %LEL | 100 | 100 | 20 | 40 | -40 to +75 |
| Methane (CH4) | %LEL | 100 | 100 | 20 | 40 | -40 to +75 |
| Pentane (C5H12) | %LEL | 100 | 100 | 20 | 40 | -40 to +75 |
| Propane (C3H8) | %LEL | 100 | 100 | 20 | 40 | -40 to +75 |
| Ethanol (IR sensor) | %LEL | 100 | 100 | 20 | 40 | -20 to +55 |
| LPG (IR sensor) | %LEL | 100 | 100 | 20 | 40 | -20 to +55 |
| Methane (IR sensor) | %LEL | 100 | 100 | 20 | 40 | -20 to +55 |
| Propane (IR sensor) | %LEL | 100 | 100 | 20 | 40 | +10 to + 55 |