Riken Keiki RI-2000W Operating Manual
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Riken Keiki RI-2000W Operating Manual

Riken Keiki RI-2000W Operating Manual

Ndir type gas detector
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PT3E-0410
NDIR type gas detector
Model RI-2000W
Operating manual

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Summary of Contents for Riken Keiki RI-2000W

  • Page 1 PT3E-0410 NDIR type gas detector Model RI-2000W Operating manual...
  • Page 2 Precautions for use This instrument is a toxic gas alarm and detector. Model RI-2000W is a safety device that is not made for quantitating or qualitative analysis and is not a concentration analyser. Please read this manual carefully to become familiar to Model RI-2000W and use the instrument properly.

  • Page 3: Table Of Contents

    Table of contents 1 Outline of model RI-2000W Introduction Purpose of use Definitions of warnings 2 Important information to ensure safety Term of "Danger" Terms of "Warning" Terms of "Caution" 3 Functions Name and function of each part 3-1-1 Dimension 3-1-2 Display ...
  • Page 4 Operations during measuring mode 5-4-1 Display and lamps 5-4-2 Output signals 5-4-3 Automatic zero adjustment Maintenance and adjustment 5-5-1 Zero point adjustment 5-5-2 Alarm test 5-5-3 Confirming the alarm set point Shutting down the instrument 6 Alarms Alarm types Operations of alarms Gas alarms 6-3-1 Operations 6-3-2 Response to gas alarms...

  • Page 5: Outline Of Model Ri-2000W

    This manual describes how to handle model RI-2000W (may be described as “this instrument” in this manual) and its specifications. Very important terms are written in this manual so please read this carefully, even if you have experience in gas monitoring.

  • Page 6: Important Information To Ensure Safety

    ・ Model RI-2000W is not explosion-proof structured. Never use this instrument to detect gas above the Lower Explosive Level, or in hazardous environment. Model RI-2000W may explode or cause fire if there is presence of flammable gas. 2-2 Terms of “Warning”...

  • Page 7: Terms Of "Caution

    ・Make sure to attach a dust filter on the gas inlet before using RI-2000W. If the filter isn’t attached properly and dust get’s inside, it will cause false operation and damage the instrument.

  • Page 8: Functions

    3. Functions 3-1 Name and function of each part 3-1-1 Dimension ① Flow monitor A window to confirm the flow rate of aspiration. ② Display Displays gas concentration readings and messages. ③ Lock A lock to keep the panel door closed. ④...

  • Page 9: Display

    3-1-2 Display ① Liquid crystal display (LCD) Displays gas concentration readings and messages. ② Power indication lamp A lamp that keeps on when operating normally after the instrument is turned on. It flashes when there is any trouble in the instrument. ③...

  • Page 10: Internal Parts

    A switch to turn the instrument ON or OFF. ② Fuse A fuse to protect the power supply system. rating: AC 125V 5A normal fuse ③ Terminal block A terminal block to connect RI-2000W and external devices.  ④ Detector A NDIR type N O gas detector (Sensor).

  • Page 11: Installation Diagram

    RI-2000W. RI-2000W requires maintenance and space for personnel is needed. Please remember to make space for personnel at the planning phase and in construction. Install RI-2000W to a firm wall with M6 bolts upright as the drawing bellow. CAUTION ・Make sure that RI-2000W is installed steadily on the wall.

  • Page 12: Block Diagram

    3-3 Block diagram 3-3-1 Electric system 3-3-2 Piping system...

  • Page 13: Start Up

    Please follow all warnings and cautions, stated or implied, in this manual. Read this operation manual carefully even if you have handled RI-2000W or not. This instrument will be damaged and will not operate properly if they are not followed.
  • Page 14 ・Please install this instrument where maintenance can be done. These places are NOT suitable installation locations: Inside big equipment and you have to shut down the apparatus for RI-2000W’s maintenance. A place where you have to dismount a part of any apparatus to reach RI-2000W. Where things (wiring, storage racks) interfere opening the case of RI-2000W.

  • Page 15: Cautions In Designing A System

    There is a ventilation fan on the top of the instrument. Please keep this part clear and do not block it with anything. If you are installing RI-2000W inside a closed instrumentation panel, please put on 2 fans on the top and the bottom to ventilate.
  • Page 16 4. Alarm contacts   The alarm contacts of this instrument are intended for transferring signals to alarm buzzers and alarm beacons. Please do not use RI-2000W for controlling systems (example: to control isolation valves). CAUTION ・The de-energized break contact (b contact) may be instantaneously opened when an...
  • Page 17 There may be negative effect to RI-2000W when the loading is controlled because of loading characteristics. Please take the measures below to stabilise operation and to protect the contacts in such case. Please attach a surge absorber (a CR circuit, a spark killer or a diode if it is a DC relay) within the rating of on the relay coil with a under voltage relay directly.

  • Page 18: Earthing

    If not, it may cause damage or electrical shocks. ・Make sure to have RI-2000W earthed and never let earthing wire to get close to the gas hose. ・Please earth within 100Ω earth resistance.

  • Page 19: Cautions In Wiring

    4-6 Suitable cables CAUTION ・Use junction box if you are using a wire that cannot go through the cable port of RI-2000W. 4-6-1 Power cable Please use relevant cables to CVVS 1.25 to 2.0 sq. 4-6-2 4-20mA signal/ contact signal line Please use signal lines relevant to CVVS 1.25 to 2.0sq.

  • Page 20: Terminal Block Diagram

    (GAS IN and GAS OUT) because the tube may tare loose from the instrument and leak hazardous gas. Please use RI-2000W in normal pressure. ・Please connect an exhaust tube on the gas outlet that is on the bottom side of the...
  • Page 21 (1)About the sample gas inlet The sample gas inlets connector size is a PT1/4 female thread. A propylene male connector is a standard accessory. The piping that matches is a φ6(0D)-φ4(1D) size Teflon tube. CAUTION ・Please make sure put on the inner and sleeve when installing, pay attention to avoid gas leakage ・The tubes material and length depends on target gas.

  • Page 22: Operation Procedure

    TEST/▼for 3 sec. Alarm test mode press and hold down ALARM/SET for 3 sec. Check alarm point ＊ NOTE   Please let RI-2000W to operate at least 4 hours warm up after it hasn’t been used for a long time.

  • Page 23: Starting

    If the ball is not above the red line, please adjust the flow rate with the flow rate adjuster. 5. The instrument will start detecting gas after it finishes warming up 60 minutes. RI-2000W will go through these operations while warming up and preparing for detection. The indications on the display will be as below. RI-2000W it will display the target gas and the measuring range.

  • Page 24: Adjusting The Flow Rate

    Please confirm the flow rate by the flow rate monitor that is on the front too. Keep the ball in sight and above the red line. The flow rate can be adjusted by RI-2000W itself, above 1.0 litre within the temperature range of it. If you have to draw gas from a distant place, please contact us.

  • Page 25: Operations During Measuring Mode

    AL2: ALARM MNT: MAINTENANCE ＊ NOTE   The symbols and locations of the LED and LCD are different from the real RI-2000W. These are some examples of the operating condition. ZERO  ●   ○   ○   ○  Zero will be displayed as on the right if the gas concentration that has been observed is within the zero suppression set value.
  • Page 26 Over scale  ●   ○   ○   ○  The display will indicate “OVER” if the concentration exceeds full scale. N20 : OVER ppm Gas alarm condition Gas alarms will activate if the gas concentration exceeds the 1st or 2nd alarm set point. The gas concentration will be displayed and the LED indicators will flash.

  • Page 27: Output Signals

    5-4-2 Output signals 1. Signal transmission system: 4-20mA (non-insulated, discharge energy) 2. Recommended transmission cable: equivalent of CVVS 3. Transmission distance: shorter than 1km Connected load resistance: less than 300Ω 5. Level of signals in each condition 1. Detection mode: 4 to 22 mA (depends on gas concentration) 2.

  • Page 28: Automatic Zero Adjustment

    4. After adjusting the zero point, the solenoid will switch the sample line to the sample gas inlet. 5. RI-2000W will go back to detection mode and monitor gas concentration after 3 minutes have passed. (End of zero adjustment) 6. Periodically operate zero adjustments.

  • Page 29: Maintenance And Adjustment

    Please adjust the zero point periodically or in each case, by zero point adjusting mode(zero calibration mode). If the instrument was turned off for a long time, please adjust the zero point after running RI-2000W for 4 or 5 hours. ＊ NOTE  ...

  • Page 30: Alarm Test

    The LCD will display “HOLD ZERO KEY”. To interrupt, release your finger. 2. RI-2000W will go into alarm test mode and “CONTACT: NO-ACT” will be displayed. Press ▲or ▼ to choose the contact operation. NO-ACT: the contact will not act ACT: the contact will act 3.

  • Page 31: Confirming The Alarm Set Point

    4. Press ▲ and make the gas concentration on the LCD rise. The 1st alarm will operate after the alarm retardation time when the numbers exceed the 1st alarm set point. “WARNING” will flash on the LED after the alarm retardation time, the alarm contact will activate if “ACT”...

  • Page 32: Shutting Down The Instrument

    ・If using an energized alarm contact (optional service), please confirm and take measures against external instruments linked with RI-2000W before turning it off. The alarm contact will activate when RI-2000W is turned off and will cause false operation of external instruments.

  • Page 33: Alarms

    6 Alarms 6-1 Alarm types RI-2000W has two types of alarms, a gas alarm and a trouble alarm. Gas alarm: The alarm will activate when the gas concentration exceeds the preset gas level (alarm set point) . Trouble alarm: An alarm to notice there is trouble (failure) in RI-2000W. The instrument will start from warm up phase when it recovers from trouble states.

  • Page 34: Gas Alarms

    6-3 Gas alarm 6-3-1 Operations RI-2000W will operate as the following when it detects gas concentration higher than the alarm set point. 1. Indications LED lamps WARNING lamp: will activate when the gas concentration exceeds the 1st alarm set point.

  • Page 35: Response To Gas Alarms

    Observe the gas concentration with a portable gas analyser. 5. Take measures after confirming there is no danger left. 6-3-3 False gas alarms RI-2000W may activate gas alarms in some cases that are not caused by gas. These are some examples. 1. Interference gases Please ask your nearest agent about interferences.

  • Page 36: Routine Maintenance

    7. Routine maintenance RI-2000W is important equipment to prevent danger and assure your safety. Please have a routine maintenance check to maintain the performance and further enhance its credibility. 7-1 Frequency and items to be checked 7-1-1 Daily maintenance Self-performed maintenance 1.

  • Page 37: Adjustments

    1. Temperature: within 5 to 35 ℃ 2. Humidity: within 30 to 85 %RH 3. Environment: gas, vapour and solvent free CAUTION ・Gas calibration of RI-2000W is required when you will start to use RI-2000W again. ・Please contact your nearest agent and request service.

  • Page 38: Periodic Replacement Parts

    7-6 Periodic replacement parts Things listed below are parts that are recommended to be replaced periodically. Replacing frequency name Check in every amount (year) Pump（exclude diaphragm ） 1〜3 6 months Pump diaphragm 6 months 1〜2 Inner tubes 6 months 1〜3 1 set 1〜2 6 months...

  • Page 39: Abnormal Conditions

    8. Abnormal conditions 8-1 Fault signals RI-2000W will provide a trouble (fault) alarm and operate as following when it detects trouble by self-diagnostics. 1. Indications: POWER lamp will flash 2. Output signals 1. 4-20mA output: 0.5mA 2. Fault signal contact: fault signal will be put out...

  • Page 40: Response To Trouble Signals

    Please review your uninterruptible power supply system, line filters and isolated transformer. 1. The power lamp doesn’t turn on. (Cannot turn on RI-2000W) Is the power supply cable connected?  →Connect the power cable. Isn’t there a short in the fuse? →Check why the short occurred and replace it.
  • Page 41 6. I cannot zero calibrate (adjust the zero point). Is it just after turning on RI-2000W?  →RI-2000W needs at least an hour to warm up.  Is it fresh air? →Please use fresh clean air that does not contain any interferent gas or, use 100vol% nitrogen.

  • Page 42: Words Used In This Manual

    9. Words used in this manual alarm delay time time lag of the alarm to activate when test gas (concentration=alarm set points value ×1.6) is drawn in the instrument. alarm retardation time         a function to suppress noise effects and false alarms. calibration  ...

  • Page 43: Detecting Principal

    10. Detecting principal The detection method of RI-2000W is gas filter correlation. It is a part of NDIR (absorption of infrared radiation) based detecting, but it has better selectivity and stability than normal NDIR methods. There is an inlet for gas to enter the sample cell (white cell) and an outlet to let the gas go out.

  • Page 44: Specifications

    11. Specifications 11-1 Standard specification Model ：RI-2000W ：Non-dispersive infrared absorption (NDIR) Detecting principal Target gas ：Nitrous Oxide(N Detection range ：0 to 200 ppm ：Within 30% of the alarm set point (on a like-for-like basis) Alarm accuracy ：Within 30 seconds Alarm delay time Sampling method ：Automatic aspiration by a pump...
  • Page 45 ：Latching (standard) or non-latching (optional) Gas alarm operations Alarm set points ： 1st alarm “WARNING” ： 50 ppm 2nd alarm “ALARM”      ： 100 ppm (Adjustable within 20 to 200ppm as an option ) Alarm indications ：WARNING (Yellow), ALARM (Red) Alarm output contacts ：...

  • Page 46: Configuration

    ＊ NOTE   ・ The specifications are subject to change without notice due to continual improvements. 11-2 Configuration Standard configuration Main unit (RI-2000W) Operating manual Accessories  2 dust filters and 2 fuses...

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