Toxalert GVU-2R User Manual

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DATA

TOXALERT

SHEET

CARBON MONOXIDE SENSOR MODEL GVU-CO

TYPICAL INSTALLATIONS:

• Parking Garages • Vehicle Maintenance & Storage
Apartments Highway Departments
Condominiums Utilities
Ofce Buildings Public Works

• Bus Garages • Police Stations

• Fire Stations • Post Ofces

• Warehouses • Ice Arenas

• Car Dealers • Tunnels

GENERAL DESCRIPTION:

The GVU-CO carbon monoxide sensor is designed
to interface with Toxalert Internationals GVU series
control. (It is not a stand alone sensor). The sensor is
microprocessor based and is temperature and humidity
compensated for stability. It has a range from 0 to 250
ppm. The transducer utilizes a tin-oxide sensing
element that is cleaned and sampled by the
microprocessor. The GVU-CO indicates its status with
a two color LED (light emitting diode). When the LED
is flashing green, operation is normal and not in alarm.
When the LED is flashing red, the unit is in alarm (high
CO). A continuous red or green indicates sensor failure
and an extinguished LED indicates power failure.

GVU-CO

FEATURES:

• Microprocessor based • Humidity & Temperature compensated

• Power On Indication • Sensor Failure Indicator

• High CO Indication • Operating range meets OSHA Std. 1910-1000

• Completely solid state for long life • Locking Enclosure

• Low voltage class two (2) wiring

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

Visit our website at www. toxalert. com

SPECIFICATIONS:

• Input Power: 12 VDC; 360 mA

(provided from control unit).

• Sensor Output: 0 to 5 VDC (non linear);
on at a nominal 4 VDC and off at 0 VDC.

• Environmental: Operating-
Temperature: -4˚ F to 122˚ F
(-20˚ C to 50˚ C)
Optional: -20˚ F to 122˚ F
(-28˚ C to 50˚ C)
Relative Humidity: 0 to 95% non condensing.

• Enclosure:

Nema 1 standard (others available)
Dimensions: 7 1/4” H x 7 3/4” W x 2 1/2” D

(184.15 x 196.85 x 63.5 mm)

INSTALLATION INSTRUCTIONS:

• Electrical Connections: At marked
screw terminal strip.

• Response Time: 30 seconds full scale.

Storage­ Temperature: -20˚ F to 158˚ F
(-28˚ C to 70˚ C)
Relative Humidity: 0 to 95% non
condensing.

Keylocking
Finish: Tan Enamel
Weight: 3 lbs. (1.3 kg)

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

Visit our website at www. toxalert. com

NOTE: Refer to Figure 2 and Tables 1 and 2. Use
shielded cable to interconnect sensor and
control unit if metal conduit is not used, or
if conduit also contains AC wiring.

1.) Measure distance between sensing unit and
control unit and select proper wire or larger
wire from Table 1.

2.) Run wiring between control and sensing unit
and into enclosure through access holes.
Connect wires from terminal blocks in sensing
unit to control unit per Table 2 and GVU series
control unit data sheet.

TABLE 1
AWG DO NOT EXCEED

#22 Wire 500 Ft. Sensor to Controller
#20 Wire 800 Ft. Sensor to Controller
#18 Wire 1300 Ft. Sensor to Controller
#16 Wire 2000 Ft. Sensor to Controller

3.) Verify all wiring connections and turn power
on to sensor.

3. BURN -IN:

Burn-in period allows sensor to stabilize before
proceeding with alarm setting procedure.

1.) Verify sensor has power, sensor LED should

be flashing green or red.

2.) Allow systems to burn-in for a minimum of
72 hours with power turned on to sensor.

3.) When 72 hours have elapsed, proceed with
system checkout according to GVU series
control unit data sheet.

Sensor is factory calibrated to 50 ppm CO and
requires no field calibration for installation.

If the GVU-CO indicator LED is not flashing,
this indicates sensor failure, please contact your
local representative or TOXALERT International.

TABLE 2 WIRING CONNECTIONS

GVU-CO CONTROL UNITS
SENSOR GVU-1 GVU-3

1 TB2-7 TB1-A7,B7,C7

2* TB2-6 TB1-A6,B6,C6
4 TB2-1 TB1-A1,B1,C1
5 TB2-4 TB1-A4,B4,C4
** TB2-5 TB1-A5,B5,C5

* Optional-power to sensor indication.
** Shield of cable (if used) should be connected at control unit only.
Make sure sensor end is taped and isolated from terminals or metal.

GVU SERIES PRODUCTS:

CONTROLLERS

GVU-1 Control unit for use with one sensor

GVU-3 Control unit for use with one to three remote sensors
GVU-6 Control unit for use with one to six remote sensors
GVU-12 Control unit for use with one to twelve remote sensors

GVU-18 Control unit for use with one to eighteen remote sensors

REMOTE SENSORS –

GVU-CO Remote carbon monoxide sensor GVU–NO
GVU-CO2 Remote CO sensor GVU–VOC Remote smoke/air quality sensor

GVU-CO revised 4/14

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

Visit our website at www. toxalert. com

Remote nitrogen dioxide sensor

2

TM

TOXALERT

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

Visit our website at www. toxalert. com