Toxalert Tox-ETO-ANA User Manual

™

TOXALERT

ETHYLENE OXIDE (ETO) SENSOR MODEL TOX-ETO/ANA

FEATURES:

•••• Linear 4-20 mA output signal •••• Interfaces directly to DDC Systems.

•••• Automatic low sensitivity check •••• Output locked during warm up and

•••• Low voltage circuits calibration.

•••• Sensor failure indication •••• Explosion proof housing.

GENERAL DESCRIPTION:

The Model TOX-ETO/ANA, self-contained
Ethylene Oxide sensor module, utilizes
electrochemical technology to provide
accurate monitoring of Ethylene Oxide
(C

It is designed for fixed installations and use in
ambient monitoring applications.
The sensor module is a 4 to 20 mA transmitter
designed for use in conjunction with
Toxalert’s Models TOX-4ANA and
ToxControl Controllers or any industry
standard 4-20 mA loop controller.

The sensor module requires a three wire connection to a controller that provides a nominal
28 vdc power and the module sources current in proportion to the gas concentration.

GUIDE SPECIFICATION:

Provide an Ethylene Oxide (ETO) sensor(s) with a range of 0 to 20 ppm (parts per million) and
a linear output of 4 to 20 mA over its range. The sensor shall be housed in an explosion proof
housing and have explosion proof conduit connection to the housing to maintain system
integrity. The sensing element shall be electrochemical and have a life expectancy of two
years. The sensor response time shall reach 90% of level being sensed in 90 seconds. The
sensor shall be powered by low voltage and have a self check capability and an LED to indicate
sensor “Low Sensitivity.” If the sensor fails, its output shall drop to zero to signal the
controller of failed condition. The sensor shall be as manufactured by Toxalert, Inc.

O) in the range of 0-20 ppm.

2H4

1 of 2

TOXALERT INTERNATIONAL, Inc., PO Box 159, Mound, MN. 55364 PHONE: [phone] • FAX: [phone]

www.toxalert.com

MODEL TOX-ETO/ANA

SPECIFICATIONS:

•••• Type: Electrochemical cell-diffusion barrier type •••• Operating Temperature : 4° to 122°F

•••• Range: 0 to 20 ppm ethylene oxide in air -20° to 50°C

•••• Response Time: 90 seconds to 90% indication •••• Relative Humidity: 15 to 90% RH non-

•••• Typical Life: Two years in normal service condensing

•••• Electrical Data:

Input Voltage: 14 – 30 vdc Output Signal: Linear 4 to 20 mA
Input Power: 1.4 Watt Signal Output-Trouble: 0 mA
Input Current: 40 mA @ 28 vdc Wiring: 3 wire non-isolated
Loop Resistance: 800 Ohms

•••• Unit Construction:

Mounting: Conduit ¾” NPT or flexible cable Physical: H: 7.6”, D: 4.6”, W: 4.2”
Housing: Explosion proof (Nema 7) Weight: 2.7 pounds

(Div 1, Class 1, Groups C, D)

Gas Sensor Modules available from Toxalert
include:

Ammonia (NH3)

Combustible Gas
Carbon Monoxide (CO)
Carbon Dioxide (CO2)

Chlorine (Cl2)

Oxygen (O2)

Hydrogen (H2)

Hydrogen Chloride (HCl)
Hydrogen Cyanide (HCN)
Hydrogen Sulfide (H2S)

Nitric Oxide (NO)
Nitrogen Dioxide (NO2)

Ethylene Oxide (ETO)
Refrigeration
And more….

Tox-ETO 2 of 2 11/97

TOXALERT INTERNATIONAL, Inc., PO Box 159, Mound, MN. 55364 PHONE: [phone] • FAX: [phone]

www.toxalert.com