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New Cosmos Electric KS-7R Instruction Manual

Carbon dioxide detector
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Carbon Dioxide Detector
KS-7R
Instruction Manual
 Keep this manual for easy reference.
 Carefully read this manual prior to use.
 This manual describes the standard model. If your unit has end-user-specific
options, this manual will be superseded by your delivery specifications.
Instruction Manual No.
GAE-139-01
June 2019

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Summary of Contents for New Cosmos Electric KS-7R

  • Page 1 Carbon Dioxide Detector KS-7R Instruction Manual  Keep this manual for easy reference.  Carefully read this manual prior to use.  This manual describes the standard model. If your unit has end-user-specific options, this manual will be superseded by your delivery specifications.

  • Page 2: Table Of Contents

    Table of Contents 1. Introduction ..........................1 2. General Precautions ........................2 3. Package Contents ........................3 4. Unit Dimensions and Components .................... 4 4-1. Outer Appearance ......................4 4-2. Inner Components ......................5 5. Installation ..........................6 6. Wiring ............................9 6-1.

  • Page 3: Introduction

    1. Introduction Thank you for purchasing the New Cosmos KS-7R carbon dioxide detector. To ensure safe and reliable operation, please read this instruction manual prior to use. This unit detects carbon dioxide and is intended for use in a non-hazardous indoor area, e.g. office, laboratory, or clean room, for the early detection of a gas leak.

  • Page 4: General Precautions

    2. General Precautions  Carefully read this manual prior to use.  Follow the precautions below to ensure safe operation.  Only use this product in accordance with applicable laws and regulations.  Only a qualified electrician with knowledge of wiring and installation procedures should perform wiring and installation.

  • Page 5: Package Contents

    The following items are included in a standard package. If any items are missing or damaged, please contact New Cosmos or its authorized representative for replacement. Item Qty. Description detector (KS-7R) Mounting screw M5x12 with spring washer (wall mounting) Cable tie To be used to bundle electric cables...

  • Page 6: Unit Dimensions And Components

    4. Unit Dimensions and Components 4-1. Outer Appearance Dimensions are in mm. Item Component Description/Function Slide up and lift the cover to access to the main power switch and to Cover wire external cables. This cover is normally closed. Houses one mounting screw, and two fastening screws that attach the Screw cover cover to the unit.

  • Page 7: Inner Components

    Item Component Description/Function During normal operation, press to display the full scale and alarm set RESET button values. Used for muting an on-going audio alarm. POWER button Press and hold for three seconds to turn on/off the detector. Speaker opening Opening for audio.

  • Page 8: Installation

    5. Installation WARNING ▪ This product is not explosion-proof equipment and should not be installed in a hazardous area. ▪ Do not use the product at an area where the CO concentration is less than 360 ppm. CAUTION ▪ Avoid strong mechanical shock, impact or vibration to the detector by dropping or bumping.
  • Page 9 Clearance for cover to slide Sensor Mounting hole Cable entry Dimensions are in mm. Wall-mount the detector using two M5 mounting screws (pitch: 134) according to the following procedure. Open the screw cover. Loosely install the mounting screw (top). Loosen the two fastening screws. Slightly pull the cover forward.
  • Page 10 Slide the cover up (cover is open). Firmly tighten the mounting screw (bottom) to secure the detector to the wall. Slide the cover down (cover is closed). 7. Slide cover down 5. Slide cover up 6. Tighten mounting screw (bottom) While pressing the cover down toward the case, Tighten the mounting screw (top).

  • Page 11: Wiring

    6. Wiring WARNING ▪ Remove any power source during wiring work to prevent electric shocks. ▪ After wiring is completed, close the detector’s cover to prevent electric shocks. CAUTION ▪ New Cosmos is not responsible for the cost or any damage resulting from controlling external equipment (e.g.

  • Page 12: Pin Terminal/Insulated Sleeve Installation

    6-1. Pin Terminal/Insulated Sleeve Installation Recommended parts/tools Part Model (Manufacturer) Remarks Shielded cable (with 0.5-1.25mm wires) Electric cable Outer diameter: 10.5mm or less (Included in package) Pin terminal TC1.25-16 (Nichifu) Used for 0.25- 1.65mm twisted wire Insulating sleeve VC1.25 (Nichifu) (Included in package) Crimping tool NH1 (Nichifu)

  • Page 13: Wire Connection/Disconnection To/From Terminal Block

    6-2. Wire Connection/Disconnection to/from Terminal Block 6-2-1. Power Terminal Block (Disconnection) (Connection) Insert each pin terminal to its While pressing the release button with a corresponding slot on the terminal block. precision screwdriver (recommended tip thickness: 2.6 mm), lift the pin terminal. 6-2-2.

  • Page 14: Operation

    7. Operation 7-1. Precautions before Use CAUTION ▪ Before turning on the unit, check that all wiring is correct. Refer to 6. “Wiring” or delivery specifications if provided. ▪ Ensure there is no target or interfering gas in the air before use. ▪...
  • Page 15 4) Press and hold the POWER button for three seconds to turn on the detector. (two beeps) The three green LEDs inside the status indicator start flashing and “- - - -” is displayed on the LCD. The warm-up cycle lasts two minutes. During the warm-up cycle, the analog output is fixed at 4 mA, gas and fault alarms are deactivated, and the detector cannot enter to User mode.

  • Page 16: Lcd Operation

    7-3. LCD Operation 7-3-1. LCD Item Icon/Display Description/Function Audio alarm icon Lit during active audio alarm. AL1 icon stage alarm notification. AL2 icon stage alarm notification. concentration value, parameter values, error Concentration value and information codes, etc. Unit of measurement A unit of gas concentration.

  • Page 17: Full Scale And Alarm Set Values Display

    7-3-3. Full Scale and Alarm Set Values Display ▪ Press the RESET button (one beep) to display the “full scale concentration”, “1 stage alarm set value”, and “2 stage alarm set value” in sequence. 7-3-4. Peak Value Display and Reset ▪...

  • Page 18: User Mode

    < 1 stage alarm > ▪ AL1 alarm light (amber) flashes and the status indicator sequentially-flashes amber. ▪ Audio alarm beep: Fast, high and low beep tones. ▪ COM-ZA1 alarm relay contact closes. / COM-ZB1 alarm relay contact opens. < 2 stage alarm >...

  • Page 19: Switching Maintenance Mode On/Off [Mode 1]

    7-4-2. Switching Maintenance Mode On/Off [Mode 1] WARNING During Maintenance mode, the gas alarm relay contacts and gas alarm audio are disabled. Turn off Maintenance mode during normal operation. 1) Enter User mode. Press the ▲ / ▼ button to select “1”.

  • Page 20: Zero Adjustment [Mode 2]

    7-4-3. Zero Adjustment [Mode 2] CAUTION ▪ Do not perform a zero adjustment. Accurate detection is not possible without proper adjustment. ▪ To adjust the sensor, a zero or air adjustment is necessary. Air adjustment is recommended. ▪ Sensor adjustment (air/zero adjustment) should only be performed by qualified technician.

  • Page 21: Alarm Test [Mode 4]

    7-4-5. Alarm Test [Mode 4] When an alarm test is executed, the alarm test value (concentration) will be displayed on the LCD, and corresponding analog output and alarm outputs (gas alarm relay contacts, audio alarm, alarm lights) will activate. This will allow the user to test the alarm operation. ▪...

  • Page 22: Alarm Event History [Mode 5]

    7-4-6. Alarm Event [Mode 5] History Up to the 10 most recent alarm events can be displayed (automatically updated). For each alarm event, the following sequence of information is displayed: peak value (ppm) during the alarm, starting and ending times (year/month/day/time) of the alarm. Press the RESET button to return to the previous screen.

  • Page 23: Clock Setting [Mode 6]

    6) Press the RESET button (one beep) to display the selected alarm event number “H *”. To display other alarm events, repeat steps 3) to 5). (E.g. H1 is selected) To delete all the alarm events, select “INIT” in step 3), then press and hold the maintenance button for three seconds.

  • Page 24: Maker Mode

    7-5. Maker Mode All the items set in Maker mode (e.g. alarm set value) are password-protected. WARNING ▪ Incorrect settings in Maker mode may change the detector’s specifications. Never operate in a way other than as described in this instruction manual. ▪...

  • Page 25: Alarm Set Value Change

    7-5-2. Alarm Set Value Change 1) Refer to 7-5. “Maker Mode”. Enter Maker mode. “775” flashes. 2) Press the maintenance button. (one beep) “AL 1” will be displayed and the AL1 icon will turn on. 3) Use the ▲ button (one beep) to select the alarm stage, AL1 or AL2.

  • Page 26: Maintenance

    8. Maintenance Daily checks are carried out by the user, while monthly and annual inspections are performed by the user, New Cosmos or its authorized representative. Important Notice for Maintenance In order to ensure the reliability of the gas detector, it is vital to perform periodic air adjustment on the gas sensor.
  • Page 27 3) Air Adjustment (Gas Calibration) To ensure reliable gas sensor performance, perform an air adjustment at least once a year. CAUTION ▪ Air adjustment should be performed by qualified technician only. For air adjustment, contact your New Cosmos representative (fees apply). Accurate gas detection is not possible without a proper air adjustment.

  • Page 28: Clock Battery Replacement

    8-2. Clock Battery Replacement Use a “CR2032 lithium battery, coin type” for clock battery. CAUTION 1. Press and hold the POWER button for three seconds to turn off the detector. 2. Open the screw cover. 3. Loosen the two fastening screws (these screws cannot be fully removed). 4.
  • Page 29 8. The cover can be temporarily attached on the top of the case by engaging Part A (cover) into Part B (case). Top of case Part A Top of cover Part B Engaged 8. Insert 9. Replace clock battery Clock battery 9.

  • Page 30: Troubleshooting

    9. Troubleshooting Before requesting repair, please refer to the table below. If the detector does not return to normal operation after performing the corresponding steps in the table, or if your issue is not found in the table, consult New Cosmos or its authorized representative. Problem Probable cause Solution...
  • Page 31 Problem Probable cause Solution Reference section ▪ Status “E-E1”, indicator “E-E2”, or flashing “E-E3” between Device failure green Press and hold the displayed and red. POWER button for three on LCD. ▪ Audio seconds to turn off the alarm detector. After a few sounds.

  • Page 32: Specifications

    10. Specifications Detection principle NDIR Sampling method Diffusion type Target gas Carbon Dioxide Detection range 360 to 5000 ppm Display Four-digit LCD with backlight, 5 ppm resolution Alarm set value AL1: 2000 ppm, AL2: 5000 ppm 0 to 40°C: ± 5% of F.S. Detection accuracy Others: ±...

  • Page 33: Warranty

    11. Warranty The warranty period is one (1) year from the date of purchase. You are entitled to the limited warranty, if the product malfunctions due to a manufacturing defect during normal use in accordance with the instruction manual, specifications and labels. Warranty Scope If the product fails or is found to be damaged due to a manufacturing defect during the warranty period, and used in accordance with the instruction manual and specifications, we will provide a free...

  • Page 34: Detection Principle

    13. Detection Principle Non-dispersive infrared sensor (NDIR) Gas is molecules made of different chemical atoms. Each gas has a strong absorbance of infrared light at specific wavelengths in the 1 to 20μm Infrared spectrum, and the amount of absorbed infrared light is proportional to its gas concentration according to the Beer-Lambert law.

  • Page 35: Glossary

    14. Glossary Term Definition Clean air or Standard atmosphere which contains 20.9 to 21.0% oxygen in dry condition or normal air atmosphere without target gas or interference gases. Gas detector Device used to detect the presence of a target gas and to give its concentration in the form of an electrical signal.

  • Page 36: Proper Product Disposal At End Of Life

    15. Proper Product Disposal at End of Life The Waste Electrical and Electronic Equipment（WEEE）directive（2012/19/EU） is intended to promote recycling of electrical and electronic equipment and their components at end of life. This symbol （ crossed-out wheeled bin ） indicates separate collection of waste electrical and electronic equipment in the EU countries. This product contains two Lithium batteries.
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  • Page 40 Feb 2019 0 (Initial issue) GAE-139-01 June 2019 Additional copies of this instruction manual may be purchased. Contact New Cosmos or its authorized representative for ordering. Authorized representative: Manufacturer: NEW COSMOS ELECTRIC CO., LTD. 2-5-4 Mitsuya-naka, Yodogawa-ku, Osaka 532-0036, Japan http://www.new-cosmos.co.jp...

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