Toxic Gas Sensors Model DM-700
Manufacturer: Teledyne| Detcon
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Toxic Gas Sensors Model DM-700
Manufacturer: Teledyne| DetconModel 700 Series Sensors are a non-intrusive “Smart” sensors designed to detect and monitor oxygen and Toxic Gases in air using electrochemical sensor technology.
The intelligent plug-in, field replaceable cell provides automatic recognition of gas type and range, and features over-sized gold-plated connections that help prevent corrosion.
The Model 700’s rugged framework includes an intrinsically safe electro-polished 316 stainless steel housing with fully encapsulated electronics and dual layer surge protection.
This innovative design virtually eliminates sensor failure due to water ingress, corrosion, vibration, and transient spikes.
A primary feature of the Model 700 is embedded intuitive software that simplifies operator interface by guiding the user through routine calibration, configuration, and fault diagnostic functions using a built-in alpha/numeric display.
The Model 700 is equipped with standard analog 4-20mA, and Modbus™ RS-485 outputs. Among its unique features is a wireless option that can be used with Detcon’s SmartWireless® product line.
Additional integration options include a Remote Alarm Module (RAM) and HART. Detcon’s toxic gas and oxygen sensors have a long shelf life and are supported by an industry-leading warranty
Features- Failsafe User-Friendly Interface
- LED Display (With Antiglare Cover)
- Full Text Display Method
- Non-intrusive Interface
- Auto Zero/Auto Span
- Pre-emptive Fault Diagnostics Environmentally Bulletproof
- Electropolished 316SS Construction
- 100% Epoxy Encapsulated Circuitry
- Bulletproof I/O Protection
- Water-proof, Corrosion-Proof, Vibration-Proof Modular and Serviceable
- Modular Design
- Plug and Play Components
- Quick Thread Release Sensor Endcap (Allen Wrench only required)
- Integral Calibration Port
Specifications
Manufacturer
Sensor Type
- Continuous diffusion/adsorption
- 3-electrode electrochemical cell
- Plug-in field replaceable Intelligent Type
Outputs
- Linear 4-20 mA DC
- RS-485 MODBUS-RTU
Electrical Classification
- Explosion-proof CCSAUS Class I, Div. 1, Groups B, C, D () Class I, Zone 1, Group IIC
ATEX
- II 2 G Ex d ib IIB + H2 T4 GB
- Ingress Protection NEMA 4X, IP66
Safety Approvals
- cCSAus
- ATEX
- CE Marking
- SIL 2 Certified to IEC 61508
Dimensions
- 7" H x 2.2" Dia.; 178 mmH x 65 mm Dia. (sensor assembly only)
- 11" H x 6.1" W x 3.75" D; 280 mmH x 155 mmW x 96 mmD (with junction box)
- Mounting holes (J-box) 5.5"; 140 mm center to center
Weight
- 2 lb, 0.907 kg (sensor only)
- 4 lb, 2.72 kg (with Aluminum J-Box)
- 9 lb, 4.08 kg (with Stainless Steel J-Box)
Power Input
- 11-30 Vdc
Power Consumption
- Normal operation = 30 mA @ 24 V (< 0.75 watt)
- Maximum = 50 mA @ 24 V (1.2 watts)
Inrush Current
- 500 mA @ 24 V (typical)
RFI/EMI Protection
- Complies with EN 50270
Analog Output
- Linear 4-20 mA DC (1,000 ohms max loop load @ 24 Vdc)
- 0 mA - All Fault Diagnostics
- 2 mA In-Calibration
- 4-20 mA 0-100 % Full Scale
- 22 mA Over-range condition
Serial RS-485 Output
- RS-485 Modbus RTU
Baud Rate
- 9600 BPS (9600, N, 8, 1 Half Duplex)
Status Indicators
- 4-digit LED display with gas concentration
- Full-script menu prompts for AutoSpan,
- Set-up Options, and Fault Reporting
Faults Monitored
- Loop, Input Voltage, Missing Sensor, Zero, Processor, Memory, Calibration
Cable Requirements
- Power/Analog 3-wire shielded cable Maximum distance is 13,300 ft with 14 AWG
- Serial Output 2-wire twisted-pair with ground, shielded communication cable specifically for use with RS-485 installations Maximum distance is 4,000 ft to last sensor
I/O Protection
- Over -voltage, Miswiring, EMI/RFI Immunity
- Oil & Gas
- Chemical Plants
- Food & Beverage
- Steel Mills
- Pulp and Paper
- Refineries
- Wastewater Treatment Plants
- Utilities
