Compur 4120 operation manual Example of cable specifications, Sensor head connection procedure

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Compur Statox 4120

Example of cable specifications:
Max. cable capacity:	l x CL = Co - Ci	= 107 nF
Max. cable inductivity:	l x LL = Lo - Li	= 6,6 mH
Diameter:	> 0,75 mm2

The Statox 4120 Systems will work reliably if the electrical resistance is : RL < 50 Ω. Most commonly the maximum length is limited by the cable capacity.

Example: Cable diameter is 1,0 mm2 (0,04 in), CL = 90 pF/m, LL = 0.7mH/km, RL / km = 19,5 Ω. The maximum cable length results to be

l = Co − Ci = 1189 m (3900 ft), the electrical resistance is

90 pF / m

RL = 2 x 1.189km (0,738 miles) x 19,5 Ω/km = 46,4Ω. So RL < 50Ω is OK.

Sensor head connection procedure:

Open sensor head, remove cable gland.

Connect signal cable to terminals X3/1 und X3/2, polarity does not matter. (DIN EN 60079-14 chapter 12 is applicable)

Fasten cable gland.

Connect battery pack: - Blue to terminal X4/1

-Orange to terminal X4/2

-Red to terminal X4/3

Connect signal cable to backplane of the rack. (See chapter 3.2)

pic.9: Sensor head pcb terminals

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Contents Compur Statox Compur Statox Installation and electrical connections Trouble shootingMaintenance and calibration Compur Statox 4120 operationImportant notice Statox 4120 system Purpose of use and descriptionStatox 4120 sensor head Statox 4120 rack Operation principleAreas Construction ConnectionsStatox 4120 control module Bargraph displayLED SR 7 „System ready LED SF 8 „System FailDiagnostic box Installation and electrical connections Statox 4120 sensor headMounting Connecting the signal cable Example of cable specifications Sensor head connection procedureInstallation instructions Statox 4120 rackStatox 4120 control module Switch positions of the sensor head pcb Slide switch S1Toggle switch S3 Switch position for H2S Switch position for HCNSwitch position for COCl2 Switch position for Cl2 Switch position for COSwitch position for HCl Switch position for ClO2 Alarm thresholds Detection modeCompur Statox 4120 operation Start upTrouble shooting SF flashingManually triggered self test of the system System failureUsing the diagnostic box Operation and error codes of the diagnostic boxDiagnostic box queries Button Display Diagnostic box error messagesCompur Statox Maintenance and calibration Inspection Statox 4120 Sensor headFilter cartridge replacement Generator cell replacementUsing span gas Sensor head calibrationProcedure This is the last opportunity to abort the procedureUse ex works calibration Maintenace request option Error C3 Too low sensitivity during self test Mounting the maintenance request pcbService mode control module Key Mode Relay PCS Relay WB Analog signal ReadingBridge Analog 20 mA 40-20mA Option analog output inhibition Analog Terminal Solder strapsSystem requirements Technical data General Gas Measuring range Sensor headDiagnostic box Control moduleRack Accessories and spare parts Art. NrArt.Nr Sensors & Generator Cells 558435