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RKI Instruments SD-705RID Smart Transmitter With Alarm Relay/Infrared Gas Detector for %LEL Isobutane - SD-705RID
Item #:
SD-705RID
Brand:
RKI Instruments
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SD-705RID Smart Transmitter With Alarm Relay/Infrared Gas Detector for %LEL Isobutane by RKI Instruments
This is a flame proof gas detectorfor LEL level detection of methane and many other hydrocarbons. This detector uses the non-dispersive infrared absorption (NDIR) detection method, which is free from interferences from H2, most non hydrocarbon refrigerants, and most other gases or vapors. The sensor also is not poisoned or influenced by silicon vapors, or corrosive vapors, which typically can destroy sensors from other detection methods.
The SD-705 is compact and easy to install and operate. The adjustment control is a magnetic wand that is easy to use by placing it onto the glass window of the gas detector. Gas concentration is read through window, and adjustable dual alarm contacts are provided for activation of external buzzer or alarm light. Powered by 24 VDC, the unit has a 4-20mA output for communication to outside controllers, for additional external readouts or alarming devices.
Features:
- Dual alarm contacts provided
- Simple adjustment with magnetic control key
- Non-dispersive infrared absorption (NDIR) method applied
- Remote detector connection capability
- Simple one man calibration
- Self-diagnostic by internal microprocessor
- Stable reading and good gas selection by NDIR
- Free from interference of inert gas and H2 etc
- Back-lit LCD provided
- Peakhold function provided (option)
*Please note we can only ship RKI products to customers within the United States
Model | SD-705RID (Sensor attached to transmitter housing) |
SD-705RI (Sensor attached to transmitter housing) |
SD-705SC-RI/GD-A45RI (Sensor attached to transmitter housing) |
Sampling Method | Sample drawing type |
Diffusion type |
Diffusion type |
Measuring Gas | Methane (CH4)and Hydrocarbon (HC) |
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Detection Principle | Non Dispersive Infrared Absorption (NDIR) method |
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Measuring Range | 0~100%LEL |
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Accuracy | Within ±5% of F.S |
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Response Time | Within 30 seconds to get T60 |
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Alarm preset point & contact capacity | 1st: 25% LEL 2nd: 50% LEL (Adjustable at any level) DC 125V 0.3A, DC30V 1A |
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External Output | Alarm contact: Gas alarm - Normally open or normally close for both 1st and 2nd alarms Trouble alarm - Normally open or normally close (option) |
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Signal: Gas concentration - 4-20mA (linear, Resistance load, below 300Ω) Malfunction - 0.5mA At maintenance mode and initial clear time - 2.5mA (Note: Max. 22mA with limiter) |
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Power source | DC 24V ±10% (power consumption: Max 4W) |
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Structure | Flame proof structure ExdIIBT4X |
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Ambient Temperature and Humidity | -10°C ~ 40°C Below 95% RH (Non-Condensing) Option: Available beyond standard range on request |
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Cable used | Shielded cable 3 core |
Shielded cable 3 core |
Shielded cable 3 core and 3 m exclusive cable is used between transmitter and detector head |
Transmission distance | Between indicator/alarm unit and detector head: Shielded cable 1.25sq used, Max 1.25km Shielded cable 2.0sq used, Max 2.0km |
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Dimensions | Approx. 205(W) x 230(H) x 90(D)mm |
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Weight | Approx. 5.2kg (SD-705RID only) |
Approx. 5.0 kg (SD-705RI only) |
Approx. 5.0 kg (SD-705SC-RI only) Approx. 7.0 kg (SD-705SC-RI with GD-A45RI and exclusive cable) |