Toxalert CM203 User Manual

TM

DATA

TOXALERT

SHEET

CARBON MONOXIDE MONITOR MODEL CM200 SERIES

TYPICAL APPLICATIONS:

• Parking Garages • Fire Stations

• Vehicle Maintenance Shops • Police Stations

• Car Dealers • Post Offices

• Warehouses • Ice Arenas

GENERAL DESCRIPTION:

TOXALERT’S Model CM200 Series monitors are
compact, solid-state, low maintenance, cost effective
carbon monoxide monitors designed for fixed installation,
continuous monitoring.

The Model CM200 Series consists of three separate
monitors. Model CM201 has a single stage audible alarm;
Model CM202 has two stages of relay outputs, and Model
CM203 has a first stage relay output and a second stage
audible alarm. All models are microprocessor based with
temperature and humidity compensation for stability. The
solid state semiconductor-type sensor and associated
electronics ensure trouble-free, long-term operation, for
there are no pumps, filters or chemical cells to replace or
maintain.

CM202

FEATURES:

• Self-Checking feature for sensor failure

• Sensor LED indication

- Operation Normal - Power ON

- Warning Stage - Alarm Stage

• Completely solid state for long life

• Relay outputs for control and alarming

• User adjustable Warning Level

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

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• User adjustable Alarm Level

• Operating range meets OSHA std. 1910.1000

• Compact Nema 1 enclosure

• No maintenance except periodic calibration
checks

OPERATION:

The Model CM200 series has a two color LED (light-emitting diode) to indicate its operating status.
When the LED is flashing green, operation is normal and unit is not in alarm. When the LED is flashing
red, the unit is sensing CO above its setting. A continuous red or green indicates failure; and LED off
indicates power failure.

Model CM201 is a single stage carbon monoxide monitor with audible alarm. A red LED and audible
alarm activate when the concentration of CO exceeds the factory-set (user-adjustable) level.

Model CM202 is a two stage carbon monoxide monitor with a relay output for each stage. If the CO
concentration rises and stays above the warning stage setpoint (field adjustable) for a delay period of
thirty seconds continuously, the warning relay, amber warning LED, and a three minute minimum on
timer shall activate. The warning stage shall be activated for a minimum of three minutes and then deacti­vate if the CO concentration is below the warning stage setpoint. Should the CO concentration remain
above the warning stage setpoint for longer than three minutes, the warning stage shall remain activated
until the CO concentration falls below the warning stage setpoint. If the CO concentration should con­tinue to rise above the alarm stage setpoint (field adjustable) and remain above the alarm setpoint for a
period of ten minutes, then the alarm stage relay and red alarm LED shall activate.

Model CM203 is a two stage carbon monoxide monitor with a warning stage relay and an audible alarm
with silence switch that is activated by the alarm stage. The operation is the same as the Model CM202
except that the audible alarm replaces the alarm relay.

SPECIFICATIONS:

• Sensor Type: Solid State Metal Oxide
Semiconductor

• Indicators:

Amber LED for Warning
Red LED for Alarm
Flashing Green/Red LED

Power on - Microprocessor

Operating

•Audible Alarm:

Model 201 - Sustained alarm tone for as long

as gas is present

Model 203 - Alarm horn with silence push

button

•Warning Stage Delay: 30 Seconds

• Minimum Fan On Time:

Model 202 - 3 Minutes
Model 203 - 3 Minutes

• Alarm Horn Delay:

Model 201 - 10 Minutes
Model 203 - 10 Minutes

• Range: 0-250 ppm

• Response Time: Less than 30 Seconds

• Input Power: 12 VDC, 300 mA regulated

• Relay Contracts: 120VAC, 2A resistive

•Factory Setpoints:
Model 201 - Alarm 50 ppm
Model 202 - Warning 50 ppm,

Alarm 100 ppm

Model 203 - Warning 50 ppm,

Alarm 100 ppm

Other Setpoints available

• Maintenance: None other than routine

calibration check

• Operating:
Temperature: 20º F to 122º F

(-29 C to 50C)

Relative Humidity: 5 to 95%

non-condensing

• Enclosure:

Dimensions - 7.5”H x 5”W x 3-3/8”

(19.05 x 12.7 x 8.57 cm)
Weight: - 3 lbs. (1.3 kg)
Type - Nema 12
Finish - Gray Enamel
Material - Steel

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

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INSTALLATION INSTRUCTIONS:

1. INSTALLATION:

Refer to Figure 1 and 2 to install and wire the
Toxalert monitor as follows:

1.) Locate a mounting location away from
direct fresh air intakes, and mount
vertically on wall or support column
approximately five to six feet above
floor.

2.) Open door and remove circuit board and
sensor from enclosure.

3.) Mount enclosure with hinge along left
side by using mounting holes (4 are
available).

4.) A wiring access hole must be added to
the enclosure anywhere along the bottom
or right side. Do not place an access hole
on the hinged side of the enclosure, since,
if conduit is used, this may restrict the
opening of the door. If conduit is to be
used, use a chassis punch to match the
required fitting size.

5.) Remove any metal chips and burrs from
enclosure.

6.) Reinstall the sensor and circuit board.

2. WIRING UNIT:

Refer to Figure 1

WARNING: To prevent fire or shock

hazard turn off supply power and fan
power sources before making
connections. Comply with all local

building codes and ordinances.

1.) Connect power to T3 as follows:

T3-1 (+12VDC)
T3-5 (Ground)

CM200 SERIES

CO CONTROL UNIT

Field Wiring Diagram

Figure 1

CAUTION: Relays R1 and R2 are

rated for 2.0 amps resistive load. If a
higher rated load is being controlled,
add a remote relay between R1 or R2
and the load.

2.) Model CM202 and CM203-Connect
control (i.e. fan) to R1 relay
contacts. Terminals T1-C (common)
and T1-NO (normally open) or T1­NC (normally closed). Normally
open contacts T1-C and T1-NO
close on a rise in CO concentration
above fan on setpoint.

3.) Model CM202-Connect load (i.e.
remote alarm) to R2 relay contacts.
Terminals T2-C (common) and T2­NO (normally open) or T2-NC
(normally closed).

4.) Turn on monitor power source, but
do not apply power to remote
devices at this time.

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

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3. BURN-IN:

Burn-In period allows sensor to stabilize before applying power to remote device(s) connected to models
CM202 & CM203.

1.) Be sure power is off to remote devices and monitor supply power is turned on.

2.) Allow sensor to burn-in for a minimum of 72 hours with power turned on to monitor. Monitor
may go in and out of alarm during burn-in.

3.) When 72 hours have elapsed, confirm remote device(s) wiring and turn power on to remote
devices.

4.) Status LED flashes on and off to indicate normal operation. If LED is on solid green or red;
please contact your local representative or TOXALERT INTERNATIONAL, INC. for

servicing.

ORDERING INFORMATION:

CM SERIES CARBON MONOXIDE MONITOR:
Model No. Description
CM 201 Carbon Monoxide Monitor with single stage audible alarm.

CM 202 Carbon Monoxide Monitor with warning output relay and alarm

output relay.

CM203 Carbon Monoxide Monitor with warning output relay and alarm stage

audible alarm with silence switch.

OPTIONAL POWER SUPPLIES FOR CM200 SERIES:
Model No. Description
CMP12U Power Supply, 120 VAC to 12 VDC,

@ 300mA (Regulated) Unit Mounted.

CMP12M Power Supply, 120 VAC to 12 VDC

@ 1.7 A (Regulated), Nema 1 Enclosure (for up to five units).

CM202 SHOWN WITH

CMP12U POWER SUPPLY

(Factory Mounted)

CM 200 2/10 TMK

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

FIG. 2 MOUNTING DIMENSIONS

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