Toxalert TOX-OXY2 User Manual

TOXALERT			TM	DATA
				SHEET
OXYGEN (O2) DEPLETION MONITOR				MODEL TOX-OXY 2
TYPICAL INSTALLATIONS:
	• Hospital MRI Rooms	• Mechanical Rooms in:
	• Liquid Nitrogen Storage	Commercial Buildings
	• Pharmaceutical Industry	Colleges/Universities
	• University Labs	Sports Facilities
	• Blood Banks	• Chemical Plants

GENERAL DESCRIPTION:

Toxalert’s Model TOX-OXY2 Oxygen Depletion Monitoring System consists of one or more remote oxygen sensors and a controller which is normally mounted outside the monitored room door. The TOX-OXY2 is designed to continuously monitor the level of oxygen in the room. Once it detects oxygen levels below normal threshold settings it demands ventilation and/or signals an audible alarm.

The controllers first stage of “Warning (Purge) stage” activates an amber LED and a set of relay contacts to operate a fan(s) or other mechanical equipment. The second stage or “Alarm Stage” activates a red LED, an audible alarm and an auxiliary set of contacts. A “Purge” switch on the face of the controller has 2 positions – ON & AUTO.

The remote oxygen sensor(s) Model TOX-O2/1 is continuously monitored by the controller for sensor failure. If the sensor malfunctions, a visual alarm will activate.

FEATURES:

• Warning (purge) stage indication		• Sensor malfunction indication
• Alarm stage indication		• Audible Alarm
• Relay outputs for remote control and alarming		• Interface to Automation System
•	Operating range meets ASHRAE recommendations	• Multiple sensor inputs optional
•	Typical sensor life 10 years	• Optional Digital Display of % Oxygen

TOXALERT INTERNATIONAL, INC., P.O. BOX 159, MOUND, MINNESOTA 55364 [phone] FAX [phone]

Visit our website at www. toxalert. com

GUIDE SPECIFICATIONS

Provide a Toxalert Model TOX-OXY2 oxygen depletion Detection and Control systems as specified.

The oxygen sensor(s) shall have a range of 0 to 25% and a linear 4 to 20mA output signal over its range. The senor shall be housed in an industrial style explosion proof housing. The sensing element shall be electro-chemical diffusion barrier type and be designed for ten (10) year element life. Sensors with a 3 year or less expected life are not acceptable. The sensor shall be powered by low voltage and its 4 to 20mA output shall be directly proportional to the percent of oxygen being detected. When sensor fails it shall drive its output signal to zero indicating alarm condition.

The oxygen sensor shall have the following diagnostic light emitting diodes (LED’s): 1) Power; 2) Sensor Failure; 3) LOOP UP (LED varies in intensity indicating 4 to 20mA loop current to controller). Sensor shall have volt meter terminals on face of sensor to indicate percent oxygen being detected.

The controller shall monitor the oxygen sensor(s) and shall have two modes of control. The first mode, “warning” shall light an amber warning lamp and start the mechanical room ventilation (or purge) system.The second mode, “alarm,” shall light a red alarm light and sound the audible alarm. The audible alarm shall have momentary push button silence switch to silence the audible portion of the alarm. The audible alarm, after being silenced, shall automatically reset and sound again at the next occurrence.

When the oxygen level drops to 19.5% the “warning” mode shall be activated. When the oxygen level drops to 18.5% the alarm mode shall be activated. Contact outputs shall be supplied for “warning” and “alarm” modes.The controller panel front shall include the following labeled indicator light and control switches.

1.Power to system light.

2.Labeled “warning” level indicator light for each sensor

3.Labeled “alarm” level indicator light for each sensor

4.Audible alarm & silence push button.

5.Purge switch to manually activate the mechanical room ventilation equipment.

6.Sensor malfunction light

SPECIFICATIONS

Method: Electochemical cell diffusion barrier type

Range: 0-25% Oxygen

Warning Set Point: Field adjustable, factory set @ 19.5%

Alarm Set Point: Field adjustable, factory set @ 18.5%

Input Power: 120 VAC, 1 amp

Relay Outputs: 5 A @ 120 VAC resistive load

Operating Range:

Temperature: 5º F to 95º F (-15º C to 35º C) Humidity: -90% RH non-condensing Pressure: .75 to 1.25 atmospheres

Gas: Oxygen (O2)

Sensor Life: 10 years

Zero Drift: Less than 5% per month

Response Time: 10 seconds to 90%

Warning Stage Outputs: Visual Indicator; Form C relay outputs, @ 120 VAC, 5A.

Alarm Stage Outputs: Visual Indicator; Audible Horn, with Silence Switch; relay output, 5A @ 120 VAC

Sensor Malfunction Output: Visual indicator

Dimensions:

Controller: 14”H x 12”W x 6”H Sensor: 8.5”H x 4”W x 4.2”D

TOXALERT INTERNATIONAL, INC., P.O. BOX 159, MOUND, MINNESOTA 55364 [phone] FAX [phone]

Visit our website at www. toxalert. com