Description
SD-1OX-HS SD-1OX Detector Head, 0 – 25% vol O2 (Oxygen) with HART Communication & SIL (No Relay) by RKI Instruments
RKI Instrument’s model SD-1 Series smart combustible gas, toxic gas, oxygen, and organic vapor detector/transmitter is a robust and reliable explosion proof design for detecting LEL and ppm levels of hazardous atmospheres. In addition to measuring the common %LEL levels of methane, hexane and isobutane, for example, the SD-1 Series also has the capability of measuring a wide variety of toxic organic compounds in a PPM range such as acrylonitrile, ethylene oxide, n-methyl pyrolidone, methylene chloride and many others. This gives the SD-1 Series a unique niche in RKI’s gas detector line-up. The SD-1 has an ATEX/IECEX approval for the explosion class ExdIICT5 and has an IP-65/67 ingress protection rating.
The SD-1 has a 4-20mA signal output as well as relay contacts for interfacing with other control systems or monitoring facilities. All SD-1 types are also available with HART communication instead of 4-20mA relay. SIL2 is available for the IR, EC and OX types. In facilitating non-intrusive conditions in hazardous atmospheres, the SD-1 can be calibrated and it’s menus navigated with magnetic switches and a magnetic key.
SD-1 Features
- Wide range of detectable gases: % LEL Combustibles, catalytic; % LEL Combustibles, IR; H2S, CO, & O2; PPM for acrylonitrile, hydrogen, ethylene oxide, n-methyl pyrolidone, methylene chloride, and many others
- Sensor types include: Catalytic, Galvanic Cell, MOS, IR, & Electrochemical
- Direct digital display of gas readings
- HART Communication protocol or 4-20 linear output
- Available with SIL2 approval (IR, EC, OX versions)
- Easy maintenance using a magnetic key
- Self-diagnosis by microprocessor
- Low power operation (Maximum: 3W)
- Explosion proof: ATEX, IECEx, ExdIICT5
SD-1 Applications
- LNG Terminal
- Petrochemical/Chemical plants
- Power plant
- Utilities
- Iron and steel works
Specification
Model |
SD-1GP
|
SD-1RI
|
SD-1GH
|
SD-1EC
|
SD-1OX
|
Detection principle |
Catalytic
|
Infrared
|
Semiconductor
|
Electrochemical
|
Galvanic Cell
|
Measuring gas |
Variety of hydrocarbons
|
See chart below
|
CO/H2S
|
Oxygen
|
Measuring range |
0 -100% LEL
|
CO: 0-75ppm
H2S: 0-30ppm
|
0 -25 vol%
|
Alarm setting |
2 programmable alarm set points/increasing/decreasing/latching/ self resetting/on delays/off delays/energized/de-energized
|
Alarm contacts |
Normally open or normally closed
|
Sampling method |
Diffusion (Flow adapter and air aspiration available)
|
Display |
4 digit Digital LED
|
Output |
4-20 mA or HART (optional without 4-20 mA)
|
Relay |
1 Relay with 4-20 mA versions or No relay with HART versions
|
Contact capacity |
30 VDC 0.5A or 120 VAC 0.5A (load resistance)
|
Fail alert Self diagnosis |
Circuit failure / Sensor failure
|
Fail alert display |
Fail lamp (Yellow)
|
Power source |
24VDC (17VDC ~ 26.4VDC)
|
Operating Temperature & humidity |
-4 ~ + 140°F / below 95% RH (non condensing) [-20 ~ + 60°C], (SD-1EC Below 80% RH)
|
Dimension & Weight |
5.8″(W) x 6.3″(H) x 3.5″ (D) , Approx. 4.4 lbs [148(W) x 161(H) x 88(D) mm, Approx. 2.0kg]
|
Approvals |
Exd II CT5,ATEX **
IECEx EN60079-29-1
|
CML 15ATEX1034
IECEX, SIL2
|
Exd II CT5,ATEX, IECEx
|
DEKRA 13ATEX0035
IECEx DEK 13.0024X, SIL2
|
SD-1GH Detectable Gases & Measuring Ranges
Detection Gas
|
Formula
|
Full Scale Ranges
|
TLV-TWA (ppm)
|
LEL
|
Low (ppm)
|
High (ppm)
|
Acetic acid |
C2H4O2
|
500
|
3000
|
10
|
4.0
|
Acetone |
C3H6O
|
100
|
10000
|
500
|
2.15
|
Acetylene |
C2H2
|
200
|
3000
|
–
|
1.5
|
Acrylonitrile |
C3H3N
|
500
|
1000
|
2
|
2.8
|
Ammonia |
NH3
|
500
|
1000
|
25
|
15
|
Benzene |
C6H6
|
200
|
2000
|
0.5
|
1.2
|
Buthylacetate |
C6H12O2
|
100
|
5000
|
150
|
1.4
|
Buthylacrylate |
C7H12O2
|
50
|
1000
|
2
|
1.5
|
n-Buthyl alcohol |
C4H10O
|
100
|
5000
|
400
|
1.4
|
Chloroform |
CHCL3
|
200
|
5000
|
10
|
–
|
Cyclohexane |
C6H12
|
200
|
5000
|
100
|
1.3
|
Cyclohexanone |
C6H10O
|
50
|
1000
|
20
|
1.1
|
2-ethoxyethyl acetate |
C6H12O3
|
100
|
3000
|
5
|
1.7
|
Ethyl acetate |
C4H8O2
|
100
|
5000
|
20
|
2.1
|
Ethyl alcohol |
C2H5OH
|
100
|
5000
|
1000
|
3.3
|
Ethylene |
C2H4
|
200
|
5000
|
200
|
2.7
|
Ethylene oxide |
C2H4O
|
100
|
1000
|
1
|
3.0
|
R-11 |
CCI3F
|
2000
|
5000
|
1000
|
–
|
R-12 |
CHCIF2
|
300
|
5000
|
1000
|
–
|
Hydrogen |
H2
|
200
|
10000
|
–
|
4.0
|
Hydrogen Specific |
H2
|
200
|
2000
|
–
|
4.0
|
Hydrogen sulfide |
H2S
|
20
|
2000
|
–
|
4.0
|
Isopropyl alcohol |
C3H8O
|
300
|
5000
|
200
|
2.0
|
Methane |
CH4
|
2000
|
100%LEL
|
–
|
5.0(CH4)
|
Propane |
C3H8
|
2000
|
100%LEL
|
–
|
2.0(C3H8)
|
Methyl alcohol |
CH3OH
|
100
|
5000
|
200
|
5.5
|
Methyl bromide |
CH3Br
|
200
|
1000
|
5
|
8.6
|
Methyl ethyl ketone |
C4H8O
|
30
|
5000
|
200
|
1.8
|
Methyl isobutyl ketone |
C6H12O
|
50
|
500
|
50
|
1.2
|
Methylene choride |
CH2CI2
|
500
|
5000
|
50
|
13.0
|
n-Hexane |
n-C6H14
|
100
|
5000
|
50
|
1.2
|
Tetrahydrofuran |
C4H80
|
20
|
3000
|
100
|
1.2
|
Toluene |
C7H8
|
20
|
3000
|
100
|
1.2
|
Trichloroethylene |
C2HCl3
|
300
|
5000
|
50
|
7.9
|
Vinyl chloride |
C2H3Cl
|
200
|
3000
|
5
|
3.8
|
Xylene |
C8H10
|
100
|
2000
|
100
|
1.0
|
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