CTX-300 Gas Detector Transmitter

Overview

When hazardous levels of toxic gases or oxygen threaten the safety of an unclassified area, the Oldham CTX 300 oxygen fixed gas detector can easily satisfy the most demanding safety requirements. The Oldham CTX 300 fixed gas detector is designed to detect oxygen (O₂), toxic and refrigerant gases, and also uses a new sensor for CO₂ detection over three different ranges: 0-5000 ppm, 0-5% vol. and 0-100% vol.

The CTX 300 transmits data in record time. With a wide range of sensor options, it has the flexibility to protect many potentially hazardous environments. Maintaining the unit is easy with pre-calibrated sensors and an optional LCD display.

Reduce Maintenance

As the only consumable element, the CTX 300 sensor is easily replaceable. New sensors come pre-calibrated from the factory. So during the sensor exchange, no calibration gas is required, nor adjustments to the detector, or remote central controller are required.

Clear readability

Highly sensitive, lighted display allows local reading
Effective power-up indication by indicator lights
Indication of maintenance or fault function by LED

High-Level technology

Pre-calibrated sensor avoiding the need to use unstable gases on site for calibration purposes
High-performance semiconductor type detector (detection of freon gas, etc.)
Available in an infrared version for CO₂

Advanced design

Highly resistant to environmental elements
Avoids having to use protective covers

Heavy-duty

Use of polycarbonate and stainless steel mounting hardware
Resistant to corrosive agents (H₂S, HCl, sea spray,…)
Durable housing

Specifically adapted options

Removable filters, interchangeable without opening the housing (which is dust-proof, condensation-proof and waterresistant)
Splash guard
Gas collector cone
Mounting brackets
Pitot tubes, floats, heating protective device, etc.
Remote calibration cup

For more information about the CTX 300 Fixed Gas Detector, contact Air-Met Scientific today.

Features

Oldham Oxygen Detection CTX-300 Features:

Detects O2, CO2, toxic and refrigerant gases
4-20 mA output analog transmitter with optional backlit display
Plug-in and pre-calibrated sensors
Available with electrochemical, infrared or semi-conductor sensors
More than 30 different sensors are available to detect most toxic gases in the industry
Available in an infrared version for CO2
EN14624 compliant with regards to R134a monitoring
Oxygen detector for commercial or industrial applications in unclassified areas

Specifications

CTX 300 Fixed Gas Detection Technical Specifications
Enclosure:	Polycarbonate housing
Function:	4-20 mA output analog transmitter
Display:	Highly visible backlight display unit (optional, gas dependent)
Visual Indicators: (on CTX 300: 3-wire)	In operation: green color Failure / maintenance : orange color
Wiring:	2 wires 9/10 screened cable – CTX 300 without display unit 3 wires screened cable – CTX 300 with display unit
Cable entry:	outer diameter: 6 to 11 mm, PG9 cable gland
Power supply:	15 to 32 V DC
Power consumption:	CTX 300 without display: 60 mA CTX 300 with display: 110 mA CTX 300 without display semiconductor versions: 100mA
Operating temperature:	without display: -40°C to +50°C (-40°F to +122°F), sensor dependent with display: -20°C to +50°C (-4°F to +122°F), sensor dependent
Ingress Protection:	IP 54, NEMA 3 & 3R
Weight:	520 g (18.2 oz)
Dimensions:	130 x 136 x 69 (lxhxd) in mm (5.12" x 5.35" x 2.72")
Certification:	Safe area only
Certification:	EMC according to EN 50270:06 CSA CLASS 812 86, CLASS 4812 06 (SIGNAL APPLIANCES) all versions exept CO2 versions
Impedance:	32 ohms max loop for CTX 300 with display unit and for semiconductors sensor versions 64 ohms max loop for CTX 300 without display unit