by Fmeaddons

Combustible Gas and Organic Vapor Detector / Transmitter

Features

  • Wide range of detectable gases
    • % LEL Combustibles, catalytic
    • % LEL Combustibles, IR
    • H2S, CO, & O2
    • PPM for acrylonitrile, 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
    • HART over 4-20mA or 4-20mA 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
Category:

Contact RKI Sales

Description

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.

Specifications

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 Two fully programmable alarm set points, increasing / decreasing, latching /

self resetting, on delays, off delays, normally energized or de-energized

Sampling Method Diffusion (Flow adapter and air aspiration available)
Display 4 digit Digital LED
Output 4-20 mA, HART (optional)
Relay 1 Relay with 4-20 mA versions or No relay with HART versions
Alarm contacts Normally open or normally closed
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
**Applied to SD-1GP for H2, CH4, i-C4H10, C3H8
Exd II CT5,ATEX ** IECEx EN60079-29-1 CML 15ATEX1034IECEX, SIL Exd II CT5,ATEX, IECEx DEKRA 13ATEX0035IECEx DEK 13.0024X

 

SD-1GH Detectable Gases & Measuring Ranges

Detection Gas Formula Full Scale Ranges TLV-TWA

(ppm)

LEL Detection Gas Formula Full Scale Ranges TLV-TWA

(ppm)

LEL
Low

(ppm)

High

(ppm)

Low

(ppm)

High

(ppm)

Acetic acid C2H4O2 500 3000 10 4.0 R-12 CHCIF2 300 5000 1000
Acetone C3H6O 100 10000 500 2.15 Hydrogen H2 200 10000 4.0
Acetylene C2H2 200 3000 1.5 Hydrogen Specific H2 200 2000 4.0
Acrylonitrile C3H3N 500 1000 2 2.8 Hydrogen sulfide H2S 20 100 1
Ammonia NH3 500 1000 25 15 Isopropyl alcohol C3H8O 300 5000 200 2.0
Benzene C6H6 200 2000 0.5 1.2 Methane CH4 2000 100%LEL 5.0(CH4)
Buthylacetate C6H12O2 100 5000 150 1.4 Propane C3H8 2000 100%LEL 2.0(C3H8)
Buthylacrylate C7H12O2 50 1000 2 1.5 Methyl alcohol CH3OH 100 5000 200 5.5
n-Buthyl alcohol C4H10O 100 5000 400 1.4 Methyl bromide CH3Br 200 1000 5 8.6
Chloroform CHCL3 200 5000 10 Methyl ethyl ketone C4H8O 30 5000 200 1.8
Cyclohexane C6H12 200 5000 100 1.3 Methyl isobutyl ketone C6H12O 50 500 50 1.2
Cyclohexanone C6H10O 50 1000 20 1.1 Methylene choride CH2CI2 500 5000 50 13.0
2-ethoxyethyl acetate C6H12O3 100 3000 5 1.7 n-Hexane n-C6H14 100 5000 50 1.2
Ethyl acetate C4H8O2 100 5000 20 2.1 Tetrahydrofuran C4H80 20 3000 100 1.2
Ethyl alcohol C2H5OH 100 5000 1000 3.3 Toluene C7H8 20 3000 100 1.2
Ethylene C2H4 200 5000 200 2.7 Trichloroethylene C2HCl3 300 5000 50 7.9
Ethylene oxide C2H4O 100 1000 1 3.0 Vinyl chloride C2H3Cl 200 3000 5 3.8
R-11 CCI3F 2000 5000 1000 Xylene C8H10 100 2000 100 1.0

Applications

  • LNG Terminal
  • Petrochemical/Chemical plants
  • Power plant
  • Utilities
  • Iron and steel works

Specifications

 

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 Two fully programmable alarm set points, increasing / decreasing, latching /

self resetting, on delays, off delays, normally energized or de-energized

Sampling Method Diffusion (Flow adapter and air aspiration available)
Display 4 digit Digital LED
Output 4-20 mA, HART (optional)
Relay 1 Relay with 4-20 mA versions or No relay with HART versions
Alarm contacts Normally open or normally closed
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
**Applied to SD-1GP for H2, CH4, i-C4H10, C3H8
Exd II CT5,ATEX ** IECEx EN60079-29-1 CML 15ATEX1034IECEX, SIL Exd II CT5,ATEX, IECEx DEKRA 13ATEX0035IECEx DEK 13.0024X

 

SD-1GH Detectable Gases & Measuring Ranges

Detection Gas Formula Full Scale Ranges TLV-TWA

(ppm)

LEL Detection Gas Formula Full Scale Ranges TLV-TWA

(ppm)

LEL
Low

(ppm)

High

(ppm)

Low

(ppm)

High

(ppm)

Acetic acid C2H4O2 500 3000 10 4.0 R-12 CHCIF2 300 5000 1000
Acetone C3H6O 100 10000 500 2.15 Hydrogen H2 200 10000 4.0
Acetylene C2H2 200 3000 1.5 Hydrogen Specific H2 200 2000 4.0
Acrylonitrile C3H3N 500 1000 2 2.8 Hydrogen sulfide H2S 20 100 1
Ammonia NH3 500 1000 25 15 Isopropyl alcohol C3H8O 300 5000 200 2.0
Benzene C6H6 200 2000 0.5 1.2 Methane CH4 2000 100%LEL 5.0(CH4)
Buthylacetate C6H12O2 100 5000 150 1.4 Propane C3H8 2000 100%LEL 2.0(C3H8)
Buthylacrylate C7H12O2 50 1000 2 1.5 Methyl alcohol CH3OH 100 5000 200 5.5
n-Buthyl alcohol C4H10O 100 5000 400 1.4 Methyl bromide CH3Br 200 1000 5 8.6
Chloroform CHCL3 200 5000 10 Methyl ethyl ketone C4H8O 30 5000 200 1.8
Cyclohexane C6H12 200 5000 100 1.3 Methyl isobutyl ketone C6H12O 50 500 50 1.2
Cyclohexanone C6H10O 50 1000 20 1.1 Methylene choride CH2CI2 500 5000 50 13.0
2-ethoxyethyl acetate C6H12O3 100 3000 5 1.7 n-Hexane n-C6H14 100 5000 50 1.2
Ethyl acetate C4H8O2 100 5000 20 2.1 Tetrahydrofuran C4H80 20 3000 100 1.2
Ethyl alcohol C2H5OH 100 5000 1000 3.3 Toluene C7H8 20 3000 100 1.2
Ethylene C2H4 200 5000 200 2.7 Trichloroethylene C2HCl3 300 5000 50 7.9
Ethylene oxide C2H4O 100 1000 1 3.0 Vinyl chloride C2H3Cl 200 3000 5 3.8
R-11 CCI3F 2000 5000 1000 Xylene C8H10 100 2000 100 1.0

Download

Product Datasheet Operating Manual
SD-1 Datasheet

SD-1 Product Datasheet

SD-1 Manual
SD-1 Operating Manual