Oldham Simtronics DG-TX7 Intelligent Flammable Gas Detector
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The MultiXplo DG-TX7 is an intelligent catalytic sensor based flammable gas detector used to detect a wide range of gases, including hydrogen (H2). The device has been designed for ease of installation, operation and maintenance in testing environments.
The MultiXplo DG-TX7 employs a pair of OXYCOL catalytic sensors in a compensated circuitry in order to provide reliable flammable gas detection in harsh environments, as long as oxygen is present.
The intelligent microprocessor driven unit is fully configurable using a wireless handheld terminal (TLU) or optionally via HART giving true flexibility to the installer. Parameters such as relay operation and alarm levels are all set via the TLU; a hazardous area approved handheld unit. In addition, the sensor element is protected by the onboard electronics to prevent exposure to over-range LEL gas concentrations. This helps reduce on-going maintenance and service costs.
Users can select between 4-20 and 0-22mA depending on system requirements. The unit may be interfaced directly with a wide range of panels, controllers and PLC’s etc.
Device status, including measured gas level is indicated on a colour coded 4 digit LED display.
Features
- High visible display
- On board relays
- Display color is status dependent
Technical data
General:
| Technology | Low temperature oxidation process, Oxycol |
| Detects | Flammable Gases |
| Range | 0 to 100% LEL |
| Calibration | with calibration gas |
Performance:
| Response time | T90 < 15 s (Methane) |
| Zero drift | +/- 3% Full scale deflection |
| Accuracy | +/- 5% Full scale deflection |
| Repeatability | +/- 1% Full scale deflection |
| Sensor life | Better than 5 years |
Output signal:
| Standard | 4-20mA, max. load impedance 700M (Std. ) 2 x configurable Relays max 1 A / 30V |
| option HART (R) | HART Protocol (7th edition) |
| option | 0-22mA (User configurable) |
| option | Lonworks (Syntel) |
| Local display | 4 digit led display and backlight color status with automatic intensity adjustment |
Electrical:
| Power supply | 24V DC, range (18 – 28V DC) |
| Power consumption | 2W normal, 5W max (backlight at max) |
| Connection | 0.3 mm2 (22 AWG) – 1.5 mm2 (16 AWG) Shielded cable recommended |
Environmental:
| Storage | -40°C TO +70°C (-40°F TO 1 58°F) |
| Operation | -40°C TO +60°C (-4°F TO 1 40°F) |
| Option | Sunshade, max. temp. 85°C (185°F) |
| Humidity | 99% RH (non-condensing) |
| Pressure | Atmospheric pressure +/- 10% |
| Ingress | IP66 |
| RFI /EMI | Complies with EN50270 |
Housing:
| Material | 316L stainless steel |
| Weight | 4 Kg (8Lbs) |
Approvals:
| ATEX | II 2 G Ex d IIC T6 Gb (-40°C to +65°C) (-40°F to +149°F) |
| IECEx | Ex d IIC T6 Gb IECEx LCI 11.0060X |
Conformities:
| EN60079-29-1 |
Accessories:
| TLU600 | Infrared remote control unit |
| AS056-250 | shade |
| AS005 | Calibration cup |
| AS047 | Display protection |
| AS011 -2 | Sample flow housing |
| AS019 | Splash guard |
| CAL-K1 C-xxDF-1 A1 -00 | Calibration kit 20ppm H2S |
Other products (stainless steel range):
| DGi-TT7-E | MultiTox, Toxic (EC Cell) Gas Detector |
| DG-TT7-S | MultiTox, Solid-State (MOS) Gas Detector |
| DG-TV7 | MultiFlame, Flame Detector |
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