Combustible Gas and Organic Vapor Detector / Transmitter

Model: SD-1 Series
Manufacturer: RIKEN KEIKI
Product Type: Gas Detection: fixed system
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Product Info

Product 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

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.

Product Specifications

Model SD-1GP
SD-1RI		 SD-1RI
SD-1RI
 SD-1GH
SD-1GH		 SD-1EC
SD-1EC		 SD-1OX
SD-10X
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 ** CML 15ATEX1034IECEX, SIL Exd II CT5,ATEX, IECEx DEKRA 13ATEX0035IECEx DEK 13.0024X

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