Detcon IR-522 Manuel d'utilisateur

detcon inc.Detcon MicroSafe™IR-522 Combustible Hydrocarbon Sensor (0-100% LEL)Operator’s Installation & Instruction ManualDecember 2, 2013 • Docum

3.5.5 Remote Mounting ApplicationsSome sensor mounting applications require that the gas sensor head be remotely mounted away from the sensortransmit

3.6 START UPUpon completion of all mechanical mounting and termination of all field wiring, apply system power and observethe following normal condit

A magnetic programming tool (see figure 5) is used to operate the switches. Switch action is defined as momentarycontact, 3 second hold, and 30 second

NOTE 2: When a “cal fault” occurs, the sensor microprocessor retains its previous calibration references.Zero calibration is complete.3.7.2 Calibrati

3.7.3 Additional Notes1. Upon entering the calibration menu, the 4-20 mA signal drops to 2 mA and is held at this level until youreturn to normal ope

Calibration FaultIf during calibration the sensor circuitry is unable to attain the proper adjustment for zero or span, the sensor willenter into the

3.11 OPTICAL SENSOR REPLACEMENT PROCEDUREShould the optical gas sensor element (part number 370-365871-212) require replacement, use the following pr

Bad 4-20 mA output1. Check that wiring is connected to correct terminal outputs. 2. Swap with a known-good transmitter to determine if transmitter is

3.14 WARRANTYDetcon, Inc., as manufacturer, warrants each NDIR optical plug in sensor (part no. 370-365871-212), for a pro-ratedfive year period unde

3.16 SOFTWARE FLOW CHART3.17 REVISION LOGRevision Date Approval Changes Made1.3 11/28/07 LU Section 3.6.1a and 3.7.2g flow rate changed from “500-1,00

Table of Contents3.0 Description3.1 Principle of Operation3.2 Application3.3 Specifications3.4 Operating Software3.5 Installation3.6 Start-up3.7 Calib

3.0 DESCRIPTIONDetcon MicroSafe™ Model IR-522, combustible hydrocarbon gas sensors are non-intrusive “Smart” sensorsdesigned to detect and monitor co

3.0.2 Microprocessor Control CircuitThe control circuit is microprocessor based and is packaged as a plug-in field replaceable module, facilitating e

3.0.4 Explosion Proof EnclosureThe sensors are packaged in a cast metal explosion proof enclosure. The enclosure is fitted with a threaded coverthat

tained, excessive loss in useable signal eventually gives way to noise and unstable readings. The optical sensor may, over longperiods of time (3-7 ye

Electrical ClassificationClass I; Groups B, C, D; Div. 1.Response TimeT50 < 15 seconds; T90 < 35 secondsClearing Time90% < 35 secondsRepeatab

3.4.3 Program ModeThe program mode provides a program status menu, allows for the adjustment of alarm set point levels, and theselection of the calib

Density - Placement of sensors relative to the density of the target gas is such that sensors for the detection ofheavier than air gases should be loc