Gulf Coast Service
TXgard and Flamgard Plus
With over 40 years of experience in gas detection technology and development, Crowcon Detection Instruments is pleased to present one of its most economical gas sensing devices. With its one man calibration system, life-long sensors, and simple parts replacement, the Txgard and Flamgard Plus range of detectors offer a reliable and cost efficient solution for most gas detection needs.
With its mission to protect people and plant from gas hazards, the newest line of gas detecting instruments include exclusive state of the art features including:
- Marine grade with stainless steel housing
- A wide range of reliable and advanced gas detecting sensors
- Flexible output options
- Optional relays for alarm and fault
- Quick response times
- Easy to read screen displays
- Easy to operate calibration methods
- Efficient and economical sensor and gas detection technology
Rugged, Reliable, and Flexible
The detector models are constructed to withstand the abuse of hazardous work environments. The TXgard and Flamgard Plus detectors use marine grade aluminum with a stainless steel sensor housing to ensure the safety and integrity of the equipment. The TXgard-IS+ is constructed of carbon-loaded nylon. The models also feature flexible output options including 2 or 3 wire formats, optional relays for alarm and fault, and 4-20mA current sink or source. Crowcon also has a wide variety of catalytic and electrochemical gas sensors to fit these models (currently offering more than 25 individual gas sensors).
Flamgard Plus and TXgardPlus Specifications
The Flamgard Plus and TXgard Plus models are similar in size (200 x 115 x 115 mm) and weight (2.2 kilograms). However, the Flamgard Plus utilizes a catalytic bead sensor and the TXgard Plus utilizes an electrochemical sensor. Both feature an ingress protection with an IP66 weatherproof cap and 2 x M20 x ½” NPT cable entries. These models feature optional relays of SPNO or SPNC contacts rated 30 Vdc 1A (non-inductive load) for Alarm 1 and fault for Alarm 2.
For easy reading, these models have a 3 digit backlit display with and LED status indicator. The magnetically operated buttons control the calibration method and the terminals are suited for up to 1.5 mm2 cable. Both models are suited for usage in hazardous zones 1 and 2.
TXgard IS+ and Specs
The TXgard IS+ is slightly smaller than the other two models and houses an electrochemical sensor type. It is approximately 160 x 123 x 92 mm in size and .7 kilograms in weight. This unit also features an IP66 weatherproof cap for ingress protection. The display is slightly smaller than the other two models, and offers a 2 line 16 character LCD screen. The calibration method is operated via front mounted push buttons, and its terminals are suited for up to 2.5 mm2 cables. This model is appropriate for hazardous zones 0, 1, and 2, and when connected via an isolation device, the TXgard IS+ is suited for hazardous zones 20, 21, and 22.
| Size | 200h x 115w x 115d (mm) |
| Weight | 2.2 kg |
| Enclosure material | Junction box: Marine grade alloy Sensor housing: 316 stainless steel |
| Ingress protection | IP65, IP66 with weatherproof cap |
| Cable entries | 2 x M20 or 1/2”NPT |
| Power | 10-30Vdc, 100mA max. (relay version). 50mA max. (non relay) |
| Operation temperatures | -10oC to +55oC (14oF to 131oF) |
| Humidity | 15 to 90% RH non-condensing |
| Relays (optional) | SPNO or SPNC contacts rated 30Vdc 1A (non-inductive load) for Alarm1, Alarm 2, Fault |
| Display | 3-digit LCD back-lit display, LED status indicator |
| Calibration method | Via magnetically operated buttons |
| Electrical output | 3-wire 4-20mA (current sink or source) |
| Terminals | Suitable for up to 1.5mm2 cable |
| Sensor type | Electrochemical |
| Repeatability | +/- 2% FSD* |
| Zero drift | +/- 2% FSD, 6 months* |
| Response time | Contact Crowcon for a full list of sensor response times |
| Hazardous area zones | Zone 1 or Zone 2 |
| Gas Type | LTEL (ppm) | STEL (ppm) | Ranges Available |
| Ammonia (NH3) | 25 | 35 | - |
| Carbon Monoxide (CO) | 30 | 200 | 100, 250 500, 1000 ppm |
| Chlorine (Cl2) | - | 0.5 | - |
| Chlorine Dioxide (ClO2) | 0.1 | 0.3 | - |
| Hydrogen (H2) | N/A | N/A | - |
| Hydrogen Cyanide (HCN) | - | 10 (MEL) | - |
| Hydrogen Flouride (HF) | 1. 8 | 3 | - |
| Hydrogen Sulphide (H2S) | 5 | 10 | 10,15,20, 25, 50, 100, 200 ppm |
| Nitrogen Dioxide (NO2) | 1 | 1 | - |
| Ozone (O3) | - | 0.2 | - |
| Oxygen (O2) | - | - | 25% Vol |
| Phosgene (COCL2) | 0.02 | 0.06 | - |
| Phosphine (PH3) | 0.1 | 0.2 | - |
| Sulphur Dioxide (SO2) | 1 | 1 | - |
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