Our new SD-1 line of smart transmitters feature state-of-the-art gas detectors with durable flameproof enclosure, best operability and maximum safety, especially in hydrogen/acethylene atmospheres.
A simple magnetic control key is placed over clear marked positions on the surface plate to test and adjust the instrument without opening the transmitter in situations with danger of explosion. This “single-man-calibration” is already in use and appreciated with other RKI gas detectors for easy maintenance.
The built-in microprocessor features a self diagnosis functions and automatic zero setting to minimize maintenance work and costs compared to other detectors.
Dual alarm contacts or trouble alarm contact are provided for activation of external buzzer or alarm light. Powered by 24VDC, the unit has a 4-20mA output for communication to outside controllers, for external readouts or alarming devices.
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Features
- For combustible gases
- Longlife RKI sensors
- Dual alarm contacts (relais)
- 4-20mA linear output
- Self diagnosis + Single-Man-Calibration
- Flameproof enclosure Exd II CT5, IP65
- ATEX approved
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SD-1 Outer Dimensions
JB-2 Translator (optional)
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Measuring Gas
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Formula
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LEL
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Resolution
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Methane
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CH4
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5,0 Vol.%
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0,5% LEL
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Ethylene
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C2H4
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2,7 Vol.%
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0,5% LEL
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Ethane
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C2H6
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3,0 Vol.%
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0,5% LEL
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Propane
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C3H8
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2,0 Vol.%
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0,5% LEL
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Iso-Butane
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i-C4H10
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1,8 Vol.%
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0,5% LEL
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n-Hexane
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n-C6H14
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1,2 Vol.%
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0,5% LEL
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IPA
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C3H8O
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1,2 Vol.%
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0,5% LEL
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Toluene
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C7H8
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1,2 Vol.%
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0,5% LEL
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MEK
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C4H8O
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1,8 Vol.%
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0,5% LEL
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Ethanol
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C2H5OH
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3,3 Vol.%
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0,5% LEL
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Model
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SD-1
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Sampling method
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Diffusion sampling
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Detection principle
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Catalytic combustion
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Measuring gas
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Combustible gases (see table above), please specify when ordering
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Measuring range / increments
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0~100%LEL / 0.1%LEL per digit |
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Resolution
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±5% of full scale
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Alarm delay time
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30s (T60)
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Alarm level and contact rating
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1st alarm 25% LEL, 2nd alarm 50% LEL (standard), 30VDC 0.5A or 250VAC 0.5A |
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Output
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Gas alarm (standard) or trouble alarm (option): normally open
Specification: 4-20 mA (300Ω)
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Self diagnosis function
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LED (yellow): system failure, communication error, short, EEPROM error
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Ingress class
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IP65
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Certifications
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ATEX (pending), CE
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Explosion proof
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Power supply
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DC24V+/-10 % (consumed power 3W max.)
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Applicable cable and
signal transmission
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CVVS 3-core (power supply + 4-20 mA)
MAX 1.25km with 1.25sq cable, MAX 2.0km with 2.0sq cable
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Operating conditions
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-20°C ~ +53°C, 0~95% RH, non-condensing
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Dimensions and weight
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Approx. 148 (W) x 161 (H) x 88 (D) mm, 2.0 kg
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Specifications subject to change without notice.
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