The XgardIQ is an intelligent and versatile gas detector and transmitter compatible with Crowcon’s 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 is 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 the 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 – Up to 15 metres away from the transmitter. Improves the 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 a 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. The 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 –The user can set the full-scale range of the sensor via the display menu according to the site or specific location requirements.

Options

• HART communications over the 4-20mA signal and via local I.S. pins for HART communicator connection.
• Relay module: provides Alarm 1, Alarm 2 and Fault SPCO contacts rated 230Vac 5A.

Gases and Ranges

Gas	Units	Max Range	Standard Range	Alarm 1 Level	Alarm 2 Level	Temperature 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