SEC Signature DIR Instruction And Operation Manual
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SEC Signature DIR Instruction And Operation Manual

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Signature DIR
SEC
Process Monitor
Instruction and Operation Manual
Sensor Electronics Corporation
12730 Creek View Avenue
Savage, Minnesota 55378 USA
(952) 938-9486 Fax (952) 938-9617
email sales@sensorelectronics.com or www.sensorelectronics.com
Part Number 71-3001 Version 011008

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  • Page 1 Signature DIR Process Monitor Instruction and Operation Manual Sensor Electronics Corporation 12730 Creek View Avenue Savage, Minnesota 55378 USA (952) 938-9486 Fax (952) 938-9617 email sales@sensorelectronics.com or www.sensorelectronics.com Part Number 71-3001 Version 011008...
  • Page 2 FUSES AND BATTERIES. WARRANTY IS VOIDED BY ABUSE INCLUDING ROUGH HANDLING, MECHANICAL DAMAGE, ALTERATION OR REPAIR. THIS WARRANTY COVERS THE FULL EXTENT OF SEC LIABILITY AND SEC IS NOT RESPONSIBLE FOR REMOVAL, REPLACEMENT COSTS, LOCAL REPAIR COSTS, TRANSPORTATION COSTS OR CONTINGENT EXPENSES INCURRED WITHOUT PRIOR WRITTEN APPROVAL.

  • Page 3: Table Of Contents

    Table of Contents SPECIFICATIONS GENERAL DESCRIPTION Features Theory of Operation III. INSTALLATION Mechanical Electrical IV. CALIBRATION / OPERATION Zeroing Warm Up Normal Spanning Calibration Certification PARTS LIST VI. DRAWING SECTION Figure 1 Dimensions/Wiring Figure 2 Mounting Figure 3 PC Link Wiring Figure 4 Sensor Separation Kit...

  • Page 4: Specifications

    I. SPECIFICATIONS Model: SEC Signature DIR Part Number: DIR011021000000 Measuring Range: EtO Channel: 0-2000 milligrams/liter (maximum) Factory calibrated to 0-1000 mg/l EtO H2O Channel: 0-500 milligrams/liter (maximum) Factory calibrated to 0-300mg/l H2O Detection Method: Diffusion Construction: Housing is anodized aluminum with sapphire optical windows.

  • Page 5: General Description

    (wavelengths), a reference and a measurement channel. The SEC Signature DIR Process monitor uses an infrared light source at one end and a dual channel receiver at the opposite end. The dual channel receiver measures the intensity of two specific wavelengths, one at an absorption wavelength and another outside of the absorption wavelength.

  • Page 6: Installation

    III. INSTALLATION Mechanical The SEC Signature DIR Process monitor has a ¾” male NPT threaded connector for installing the device on the sterilizer. Ideally the device can be installed on the recirculation line (see Figure 4). The device is vacuum tested at the factory to 1 inches of mercury absolute and pressure tested to 40 psi.
  • Page 7 Zeroing EtO (Channel 0) Zeroing should be performed: When unit is installed on chamber If Sensor doesn’t return to zero between cycles If Sensor shows abnormally high or low concentration readings during EtO exposure. Annually (more often if the load material is dusty or oily) Procedure: After chamber evacuation, water injection and dwell: Move cursor to “Zero EtO Channel”...

  • Page 8: Spanning

    Spanning Spanning is only required to establish measurement range. Spanning teaches the unit what 50% of full scale looks like (25% for H2O). The unit is designed to be spanned at the typical empty chamber operating concentration. The fact that the span value becomes 50%(25%) of full scale gives the unit over-range capability.
  • Page 9 Heater Adjustment Relative Mode (Recommended) In the Relative Mode, a constant power level is applied to the heaters. This will give the best accuracy over process temperature variations. There are 10 fixed power levels; 0=heaters off, 10=Full Power. The sensor temperature is a function of process temperature, mounting surface temperature, and ambient temperature.

  • Page 10: Calibration Certification

    0-300mg/l. Best accuracy requires the unit to be zeroed and spanned in-chamber at operating temperature and humidity, using typical concentrations of EtO and H2O for spanning. Example of Calibration Certification Each SEC Signature is shipped with a completed Calibration Certification.

  • Page 11: Parts List

    V. PARTS LIST Part Number Description DIR011021000000 SEC Signature DIR Process monitor 142-1750 SEC DIR PC Link Kit 190-10001 SEC 2001 Explosion proof junction box 142-0852 Replacement Screen 142-0701 Replacement Filter VI. DRAWING SECTION Figure # Title Figure 1 Dimensions/Wiring...
  • Page 12 Figure 1...
  • Page 13 Figure 2...
  • Page 14 EtO/H20 SEC IR PC LINK MONITOR Power Chart Recorder PLC, DAS, DCS, DVM (Any control or monitoring system that accepts a 4-20 mA or 0-5 VDC signal) Figure 3...
  • Page 15 Figure 4...

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