The Guardian is a newly expanded family of wall mounted, continuous gas monitors available for Carbon Monoxide, Hydrogen Sulfide, Oxygen, Chlorine, Sulfur Dioxide, Hydrogen Cyanide, Hydrogen Chloride, Nitrogen Dioxide, Nitric Oxide, Hydrogen, and many others. Standard features include digital display, NEMA 4X enclosures, output relays, and multi-level audio and visual alarms. The Guardian controller is available with up to four remote sensors which are fast responding and unaffected by temperature and humidity changes. A system test button, local danger alarm indicator, and fault alarm assures proper operations. The unit is easy to install, operate, and maintain. CEA Instruments has other units available for monitoring numerous toxic gases, combustible gases, and oxygen levels in personal size, as well as single, and multi-channel portable and fixed systems.• SENSOR RANGES See the Guardian price list for available ranges • SENSOR TYPE Three (3) electrode, electrochemical fuel cell • DIGITAL DISPLAY TYPE Red LED, .6" high • WARRANTY Two (2) years - sensor, transmitter, and controller (one year for Oxygen sensor) • EXPECTED SENSOR LIFE 3 to 5 years (one year for Oxygen sensor) • RESPONSE TIME Less than 8 seconds to full alarm • SENSOR SIGNAL INPUT 4-20mA, 350 ohms maximum • REPEATABILITY 1% of full scale • DRIFT Less than 2% per month • ALARMS Caution, Warning, and Danger gas alarms and • Problem (fault) alarm (Set to current OSHA • levels unless specified otherwise) • AUDIBLE ALARM Pulsating piezo buzzer (90dB) • RELAY CONTACTS Problem - SPST, NO 1A @ 125VAC non-latching • Danger - 2 SPDT, 10A @ 125VAC latching • Relay 1 - SPDT, 10A @ 125VAC • Relay 2 - SPDT, 10A @ 125VAC • POWER 110VAC - 50/60 Hz @ 200mA • DIMENSIONS Controller - 7"h x 7"W x 5"D - NEMA 4X • Remote sensor/transmitter – • 3.5"H x 6"W x 3"D - NEMA 4X • WEIGHT Controller - 4 lbs 10 oz (2.1 kilograms) • Remote sensor/transmitter - 1 lb 5 oz (600 g) • TEMPERATURE RANGE -15oC to 40 oC (5 oF to 104 oF) continuous • OPERATING HUMIDITY 15 to 90% non-condensing • SENSOR RANGES See the Guardian price list for available ranges • SENSOR TYPE Three (3) electrode, electrochemical fuel cell • DIGITAL DISPLAY TYPE Red LED, .6" high • WARRANTY Two (2) years - sensor, transmitter, and controller (one year for Oxygen sensor) • EXPECTED SENSOR LIFE 3 to 5 years (one year for Oxygen sensor) • RESPONSE TIME Less than 8 seconds to full alarm • SENSOR SIGNAL INPUT 4-20mA, 350 ohms maximum • REPEATABILITY 1% of full scale • DRIFT Less than 2% per month • ALARMS Caution, Warning, and Danger gas alarms and • Problem (fault) alarm (Set to current OSHA • levels unless specified otherwise) • AUDIBLE ALARM Pulsating piezo buzzer (90dB) • RELAY CONTACTS Problem - SPST, NO 1A @ 125VAC non-latching • Danger - 2 SPDT, 10A @ 125VAC latching • Relay 1 - SPDT, 10A @ 125VAC • Relay 2 - SPDT, 10A @ 125VAC • POWER 110VAC - 50/60 Hz @ 200mA • DIMENSIONS Controller - 7"h x 7"W x 5"D - NEMA 4X • Remote sensor/transmitter – • 3.5"H x 6"W x 3"D - NEMA 4X • WEIGHT Controller - 4 lbs 10 oz (2.1 kilograms) • Remote sensor/transmitter - 1 lb 5 oz (600 g) • TEMPERATURE RANGE -15oC to 40 oC (5 oF to 104 oF) continuous • OPERATING HUMIDITY 15 to 90% non-condensing • SENSOR RANGES See the Guardian price list for available ranges • SENSOR TYPE Three (3) electrode, electrochemical fuel cell • DIGITAL DISPLAY TYPE Red LED, .6" high • WARRANTY Two (2) years - sensor, transmitter, and controller (one year for Oxygen sensor) • EXPECTED SENSOR LIFE 3 to 5 years (one year for Oxygen sensor) • RESPONSE TIME Less than 8 seconds to full alarm • SENSOR SIGNAL INPUT 4-20mA, 350 ohms maximum • REPEATABILITY 1% of full scale • DRIFT Less than 2% per month • ALARMS Caution, Warning, and Danger gas alarms and • Problem (fault) alarm (Set to current OSHA • levels unless specified otherwise) • AUDIBLE ALARM Pulsating piezo buzzer (90dB) • RELAY CONTACTS Problem - SPST, NO 1A @ 125VAC non-latching • Danger - 2 SPDT, 10A @ 125VAC latching • Relay 1 - SPDT, 10A @ 125VAC • Relay 2 - SPDT, 10A @ 125VAC • POWER 110VAC - 50/60 Hz @ 200mA • DIMENSIONS Controller - 7"h x 7"W x 5"D - NEMA 4X • Remote sensor/transmitter – • 3.5"H x 6"W x 3"D - NEMA 4X • WEIGHT Controller - 4 lbs 10 oz (2.1 kilograms) • Remote sensor/transmitter - 1 lb 5 oz (600 g) • TEMPERATURE RANGE -15oC to 40 oC (5 oF to 104 oF) continuous • OPERATING HUMIDITY 15 to 90% non-condensing