Riken Keiki SD-D58-AC Operating Manual
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Riken Keiki SD-D58-AC Operating Manual

Riken Keiki SD-D58-AC Operating Manual

Smart transmitter/gas detector head type gp/nc/ncw/gp h/nc h
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PT2E-1739
Smart Transmitter/Gas Detector Head
SD-D58・AC
SD-D58・DC
(TYPE GP)
(TYPE NC)
(TYPE NCW)
(TYPE GP H)
(TYPE NC H)
Operating Manual

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Summary of Contents for Riken Keiki SD-D58-AC

  • Page 1 PT2E-1739 Smart Transmitter/Gas Detector Head SD-D58・AC SD-D58・DC (TYPE GP) (TYPE NC) (TYPE NCW) (TYPE GP H) (TYPE NC H) Operating Manual...
  • Page 2 Operating Precautions This detector head is a gas detector that detects combustible gases in the air and triggers a gas alarm. The gas detector is a safety unit, not an analyzer or densitometer which performs quantitative/qualitative analysis/measurement for gases. Please fully understand the following points before using it, so that it can be used properly. This detector head may be interfered by gases and vapors other than the gas to be detected.

  • Page 3: Table Of Contents

    <Contents> Outline of the Product ....................... 1 1-1. Preface ............................. 1 1-2. Purpose of use ......................... 1 1-3. Definition of DANGER, WARNING, CAUTION, and NOTE ............2 1-4. Method of confirmation for Standards and Explosion proof specification ......... 2 Important Notices on Safety ..................... 3 2-1.

  • Page 4: Outline Of The Product

    1 Outline of the Product 1-1. Preface Outline of the Product 1-1. Preface Thank you for choosing our smart transmitter/gas detector head SD-D58 series. Please check that the model number of the product you purchased is included in the specifications on this manual. This manual explains how to use the detector head and its specifications.

  • Page 5: Definition Of Danger, Warning, Caution, And Note

    1 Outline of the Product 1-3. Definition of DANGER, WARNING, CAUTION, and NOTE 1-3. Definition of DANGER, WARNING, CAUTION, and NOTE This message indicates that improper handling may cause death or serious DANGER damage on health or assets. This message indicates that improper handling may cause serious damage WARNING on health or assets.

  • Page 6: Important Notices On Safety

     Do not attempt to repair the detector head by the user.  For the lid, use hexagon socket head bolts specified by RIKEN KEIKI.  The drive lid must be closed during use (except during maintenance).

  • Page 7: Warning Cases

    2 Important Notices on Safety 2-2. Warning cases 2-2. Warning cases WARNING Power supply Before turning on the detector head, always check that the voltage is properly applied. Do not use an unstable power supply because it may cause malfunctions. Need of grounding circuit Do not cut the grounding circuit or disconnect the wire from the grounding terminal.

  • Page 8: Precautions

    2 Important Notices on Safety 2-3. Precautions 2-3. Precautions CAUTION Do not use a transceiver or such a device near the detector head. Radio wave from a transceiver near the detector head or its cables may disturb indication reading. If a transceiver is used, it must be used in a place where it disturbs nothing. To restart the detector head, wait for five seconds or more before doing it.

  • Page 9: Safety Information

    2 Important Notices on Safety 2-4. Safety Information 2-4. Safety Information Necessary information for explosion proof construction of Model SD-D58・AC／SD-D58・DC. The Model SD-D58・AC／SD-D58・DC is a fixed mount, continuous-monitoring detector head and provides a 4-20mA signal which indicates the target gas reading for use by a gas monitoring controller, recording device, or programmable controller.
  • Page 10 2 Important Notices on Safety 2-4. Safety Information <ITRI Specifications> Technical Data (Protection Method) Flameproof enclosure (Explosion-proof class) Ex d ⅡB+H2 T4 Gb X (Ambient Temperature) Type AC: -20C to +50C Type DC: -20C to +53C (Electrical Data) Supply voltage : Type AC: AC100-110V 50/60Hz 120mA Type DC: DC24V 360mA Electrical rating :...
  • Page 11 2 Important Notices on Safety 2-4. Safety Information <TIIS Specifications> Technical Data (Protection Method) Flameproof enclosure (Explosion-proof class) Ex d ⅡB+H2 T4 (Ambient Temperature) Type AC: -20C to +50C Type DC: -20C to +53C (Electrical Data) Supply voltage : Type AC: AC100-110V 50/60Hz 120mA Type DC: DC24V 360mA Electrical rating : DC3.0V 430mA or DC5.0V 200mA...

  • Page 12: Product Components

    3 Product Components 3-1. Main unit and standard accessories Product Components 3-1. Main unit and standard accessories <Main Unit> (including cable glands) Gas inlet Gas outlet 4-φ7 (for Display Cable connecting port Cable connecting port For transmission,contact(SD-D58･AC) For power(SD-D58･AC) For transmission,contact,power(SD-D58･DC) For unused(SD-D58･DC) Unit: mm...
  • Page 13 3 Product Components 3-1. Main unit and standard accessories <Standard Accessories>  Operating manual  Dedicated handling lever ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 1 lever  Dedicated control key ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ The control key quantity depends on the number of detector heads to be delivered. 1 to 10 units 1 key 11 - 20 units...

  • Page 14: Names And Functions For Each Part

    3 Product Components 3-2. Names and functions for each part 3-2. Names and functions for each part <Display> In cases other than TYPE NCW (5) Power lamp (6) Alarm lamp (7) Fault lamp MENU/ESC key (3) ▲ key (8) Concentration value display (4) ▼...
  • Page 15 3 Product Components 3-2. Names and functions for each part In cases TYPE NCW (5) Power lamp (6) Alarm lamp (7) Fault lamp MENU/ESC key ▲ (10)Concentration value display ▼ (2) SET/ALM key キ (8) L range lamp (9) H range lamp Used to enter the maintenance mode.
  • Page 16 3 Product Components 3-2. Names and functions for each part <Inside of the main unit> (Electric circuit section) (1) Terminal plate (for power supply) (5) Fuse (2) Terminal plate (for contact and transmission) (3) Power switch (4) Grounding terminal Terminal plate (for power supply) Power input terminal plate.
  • Page 17 3 Product Components 3-2. Names and functions for each part NOTE Open the electric circuit lid. Remove the electric circuit lid and display unit to find behind them the electric circuit section shown in the figure above. Open Display unit Electric circuit lid Close After use, closely tighten the lid until the thread is no longer seen and the "TOP"...
  • Page 18 The bolt with the hexagon socket must use the stainless steel material of property class "A2-70".  Grease specified by RIKEN KEIKI : BARRIERTA JFE 552 (manufactured by NOK KLUBER) If you can not prepare the specified grease, use one that meets the following requirements.

  • Page 19: Block Diagram

    3 Product Components 3-3. Block diagram 3-3. Block diagram <Electric Diagram> SD-D58･AC Pump Power supply part POWER INPUT (100 - 110 VAC) Power supply part POWER OUTPUT (24 VDC) Display (POWER) (ALARM) (FAULT) Alarm contact controller Seven-segment LED Controller 1. Gas alarm contact (four-digit) (CPU) (ALARM)
  • Page 20 3 Product Components 3-3. Block diagram <Electric Diagram> SD-D58･DC Power supply part Pump POWER OUTPUT (24 VDC) Display (POWER) (ALARM) (FAULT) Alarm contact controller Seven-segment LED Controller 1. Gas alarm contact (four-digit) (CPU) (ALARM) 2. Fault contact (FAULT) Magnetic operation part 3.

  • Page 21: How To Use

    4 How to Use 4-1. Before using the detector head How to Use 4-1. Before using the detector head Not only the first-time users but also the users who have already used the product must follow the operating precautions. Ignoring the precautions may damage the detector head, resulting in inaccurate gas detection. 4-2.

  • Page 22: Precautions For System Designing

    4 How to Use 4-3. Precautions for system designing Keep the detector head (and its cables) away from noise source devices. When selecting installation points, avoid a place where high-frequency/high-voltage devices exist. Do not install the detector head in a place where maintenance of the detector head cannot be performed or where handling the detector head involves dangers.
  • Page 23 4 How to Use 4-3. Precautions for system designing Introducing protective measures against lightning If cables are installed outside the factory/plant, or if internal cables are installed in the same duct as the cables coming from outside the factory/plant, "lightning" will cause problems. Because lightning acts as a large emission source while cables act as a receiving antenna, devices connected to the cables may be damaged.
  • Page 24 4 How to Use 4-3. Precautions for system designing SD-D58 series Power Power supply supply Alarm contact External relay (Low-voltage relay) * SK1, SK2: Surge absorbing parts...

  • Page 25: How To Install

     Tighten the hexagon socket head cap bolt fixing the lid and the main body with a tightening torque of 215.6 ±24.5N･cm.  When closing the lid of the detector, make sure that there is no dust on screw, surfaces of the main body and lid. Then apply grease as specified by RIKEN KEIKI.
  • Page 26 CAUTION Grease specified by RIKEN KEIKI : BARRIERTA JFE 552 (manufactured by NOK KLUBER) If you can not prepare the specified grease, use one that meets the following requirements. 1. Material does not harden due to deterioration 2.

  • Page 27: How To Wire

    4 How to Use 4-5. How to wire 4-5. How to wire DANGER  Do not put a metal object or other foreign substances inside the external connection terminal box when attaching the lid.  Ignoring this may damage the device or impair the explosion-proof performance. ...
  • Page 28 4 How to Use 4-5. How to wire ＜ITRI Specifications＞ Cable outer diameter Rubber seal inner diameter Washer inner diameter Eccentric washer (mm) (mm) (mm) inner diameter (mm) 9.0 -9.6 10 10 9.8 9.6 -11.0 11 14 11.8 11.0 -12.0 12 14 12.8...
  • Page 29 4 How to Use 4-5. How to wire ＜Figure of Terminal Plate＞ SD-D58・AC ３ ４ ５ ６ １ ２ Sig. Sig. contact contact (＋) (－) (Ｌ) 4-20mA 100-110VAC Output input ＋ HART * SD-D58・DC １ ２ ３ ４ ５ Sig. ※SD-D58･AC (＋) (－)
  • Page 30 4 How to Use 4-5. How to wire <Specifications of Terminal Plate> Specifications of terminal plate  Rated voltage: 250 VAC  Rated current: 12 A However, it depends on cables to be used. Connection conditions  Cables: 0.25 - 2.5 mm ...
  • Page 31 4 How to Use 4-5. How to wire NOTE <How to Use the Dedicated Handling Lever> Push the lever with your While holding down the lever, insert the wire finger to lower the spring in into the (round) wiring hole until it reaches its inside.
  • Page 32 4 How to Use 4-5. How to wire <Attaching External Cables and Plugs> As shown on the figure below, attach the parts in the following order: cable gland, eccentric washer, washer, and rubber seal to the cable, then connect the cable into the main unit, then screw the cable gland to tighten the rubber seal.When installing the cable gland, wipe the cable gland mounting part, the hexagon soket set screw, the grounding screw, and the cable gland and wipe the specified grease.
  • Page 33 4-5. How to wire CAUTION Grease specified by RIKEN KEIKI : BARRIERTA JFE 552 (manufactured by NOK KLUBER) If you can not prepare the specified grease, use one that meets the following requirements. 1. Material does not harden due to deterioration 2.
  • Page 34 4 How to Use 4-5. How to wire <Grounding> Connect the detector head to your grounding terminal with the external grounding terminal WARNING  Before turning on the detector head, do not forget to connect it to a grounding terminal. ...
  • Page 35 4 How to Use 4-5. How to wire SD-D58･DC Connecting to the indicator 【3-core･4-20mA】 SD-D58・DC RM-5003 , etc. +24V WARNING  If HART communication is used, check so that wiring load resistance that constitute 4-20mA loops, amount to 250 Ω-300 Ω.

  • Page 36: How To Tube

     To remove dust, never fail to attach the supplied dust filter in the middle of the tube.  The tube (length and material) must be decided. Please contact RIKEN KEIKI for more information.  Do not use the detector head under an inert gas atmosphere. The flow rate cannot be detected correctly under an inert gas atmosphere such as He.

  • Page 37: How To Operate

    5 How to Operate 5-1. Preparation for start-up How to Operate 5-1. Preparation for start-up Before supplying power, read and understand the following precautions. Ignoring these precautions may cause an electric shock or damage the detector head.  Connect the detector head to a grounding circuit. ...

  • Page 38: Basic Operating Procedures

    5 How to Operate 5-2. Basic operating procedures 5-2. Basic operating procedures Normally, the detection mode is activated after the power is turned on. PW：POWER ●：点灯 Lamp on A：ALM ○：消灯 Lamp off F：FAULT ◎：点 Lamp blinking L：L range lamp 滅 H：H range lamp The detector head is restarted after recovering...

  • Page 39: How To Start The Detector Head

    5 How to Operate 5-3. How to start the detector head 5-3. How to start the detector head  Before supplying power (100 VAC) to the detector head, check that the detector head is installed properly.  Open the electric circuit lid.* ...
  • Page 40 5 How to Operate 5-4. Modes Mode Item Details display ― Detection mode concent Normal state. ration Displays the program version and others. ROM/SUM display This is not typically used by the user. Zero adjustment Performs the zero adjustment. Maintenance mode (User) Setting display Displays various setting values.

  • Page 41: Maintenance Mode (User)

    5 How to Operate 5-5. Maintenance mode (User) 5-5. Maintenance mode (User) WARNING After the adjustment is completed, do not forget to press MENU/ESC key to return to the detection mode. (If the detector head remains in the maintenance mode, it automatically returns to the detection mode in ten hours.) Detection mode ●...
  • Page 42 5 How to Operate 5-5. Maintenance mode (User) <Zero Adjustment "1-1"> This is used to perform the zero adjustment. 1- 1 ◎ ○ ○ ● ○ Press the SET key. ↓ ↓ Current concentration value display ◎ ○ ○ ● ○...
  • Page 43 5 How to Operate 5-5. Maintenance mode (User) <Setting Display "1-2"> 1-2. 1- 2 ◎ ○ ○ ● ○ Press the SET key. ↓ Alarm setpoint display ◎ ○ ○ ● ○ 25.0 Example: 25% LEL ↓↑ ▲ ▼ Alarm delay time ◎...

  • Page 44: How To Exit

    5 How to Operate 5-6. How to exit 5-6. How to exit  Turn OFF the power switch of the indicator/alarm unit.  Turn off the power supply to the detector head.  Open the electric circuit lid.*  Turn OFF the power switch of the detector head. ...

  • Page 45: Operations And Functions

    6 Operations and Functions 6-1. Gas alarm activation Operations and Functions 6-1. Gas alarm activation Gas alarm: Triggered when the concentration of detected gas reaches or exceeds the alarm setpoint value. <<Auto-Reset>> NOTE The alarm setpoint is factory-set. Although the alarm delay time (standard: 2 seconds) works in the detector head to prevent a false activation, it can be cancelled if not needed.

  • Page 46: Fault Alarm Activation

    After the detector head is successfully returned from the fault, it restarts with the process normally performed right after it is turned on (initial clear). If the detector head has problems and is repeatedly malfunctioning, contact RIKEN KEIKI immediately. NOTE For information on malfunctions (error messages), see "9.

  • Page 47: External Output Operation

    6 Operations and Functions 6-4. External output operation NOTE A low flow rate abnormality can be a cause of fault alarm contact output. For information on malfunctions (error messages), see "9. Troubleshooting". 6-4. External output operation Signal transmission system Electric current transmission (non-isolated) 4 – 20 mA Transmission path CVVS Transmission distance...
  • Page 48 6 Operations and Functions 6-4. External output operation Example of gas concentration and external output TYPE NCW External output 22mA 20mA Detection mode 4-16mA(L range)/ 16-20mA(H range) settings 16mA Maintenance mode 2.5mA Ful scale over L range Zero H range suppression Gas concentration Full scale...

  • Page 49: Other Functions

    6 Operations and Functions 6-5. Other functions 6-5. Other functions <Suppression Function> The sensors used with the detector head are influenced by environmental changes (temperature, humidity, and other characteristics) or interference gases (interference characteristics) in no small measure, which affects the reading. Therefore, the reading might be fluctuated around zero even in a normal environment. This function obscures influences by environmental changes and interference gases around zero that have no meaning for your management rules of gas alarm.

  • Page 50: Maintenance

    7 Maintenance 7-1. Maintenance intervals and items Maintenance The detector head is an important instrument for the purpose of safety. To maintain the performance of the detector head and improve the reliability of safety, perform a regular maintenance. 7-1. Maintenance intervals and items ...
  • Page 51 7 Maintenance 7-1. Maintenance intervals and items  The followings are typical maintenance services. For more information, please contact RIKEN KEIKI. Main services Power supply Checks the power supply voltage. check Verifies that the power lamp lights up. (Verifies that relevant points can be identified on the system.) (When a UPS (uninterruptible power system) is used, checks the operation with the UPS.)

  • Page 52: Maintenance Mode (Regular Maintenance)

    7 Maintenance 7-2. Maintenance mode (Regular maintenance) 7-2. Maintenance mode (Regular maintenance) WARNING After the adjustment is completed, never fail to press MENU/ESC key to return to the detection mode. (If the detector head remains in the maintenance mode, it automatically returns to the detection mode in ten hours.) Mode Item...
  • Page 53 7 Maintenance 7-2. Maintenance mode (Regular maintenance) User mode 1- 3 ◎ ○ ○ ● ○ In "1-3.", press the SET key. ↓ ↓ Then hold down the SET key ◎ ○ ○ ● ○ ‐‐‐‐ again for three seconds. ↓...
  • Page 54 7 Maintenance 7-2. Maintenance mode (Regular maintenance) → Flow sensor setting 2-6. Flow sensor setting 2- 6 ◎ ○ ○ ● ○ Sets the flow sensor ⇒P61 functions. "2-6.0," "2-6.5" to "2-6.6," ↓↑ ▲ ▼ and "2-6.8" to "2-6.9" are factory-set.
  • Page 55 7 Maintenance 7-2. Maintenance mode (Regular maintenance) <Test Mode "2-0"> ◎ ○ ○ ● ○ Press the SET key. ↓ ↓↑ ▲ ▼ → 2-0.0 Gas test ◎ ○ ○ ● ○ 2-0.0 Gas test ⇒P53 ↓ ↓↑ ▲ ▼ →...
  • Page 56 7 Maintenance 7-2. Maintenance mode (Regular maintenance) <Gas Test "2-0.0"> 2-0.0 ◎ ○ ○ ● ○ 2-0.0 Press the SET key. ↓ ↓ Introduce the test gas and ◎ ○ ○ ● ○ perform the gas test. ↓ ◎ ● ○...
  • Page 57 7 Maintenance 7-2. Maintenance mode (Regular maintenance) <Fault Test "2-0.2"> 2-0.2 ◎ ○ ○ ● ○ 2-0.2 Press the SET key. ↓ ↓ Fault test ON/OFF ◎ ○ ○ ● ○ Select either ON/OFF. Switch ON and press the SET key to trigger the fault alarm.
  • Page 58 7 Maintenance 7-2. Maintenance mode (Regular maintenance) <Memory Test "2-0.4"> 2-0.4 ◎ ○ ○ ● ○ 2-0.4 Press the SET key. ↓ ↓ When StA. is displayed, press the SET StA. ◎ ○ ○ ● ○ key again ↓ When CAL. is displayed, the memory CAL.
  • Page 59 7 Maintenance 7-2. Maintenance mode (Regular maintenance) <Environmental Setting "2-4"> Set various operations and functions in the environmental setting. <<Environmental Setting 1>> 2-4. Environmental setting ◎ ○ ○ ● ○ 2- 4 Press the SET key. ↓ ↓ 2-4.0 ◎ ○...

  • Page 60: Gas Calibration Method

    7 Maintenance 7-3. Gas calibration method 7-3. Gas calibration method Perform a gas calibration in each mode (zero adjustment mode and span adjustment mode) using the calibration gas.  Zero adjustment gas Exhaust  Span adjustment gas (collected in a gas sampling bag) sampling ...
  • Page 61 7 Maintenance 7-3. Gas calibration method <Span Adjustment "2-2"> This is used to perform the span adjustment. CAUTION Before starting the span adjustment, provide the detector head with the span adjustment gas and wait until the indicator is stabilized. In cases other than TYPE NCW 2- 2 ◎...
  • Page 62 7 Maintenance 7-3. Gas calibration method In cases TYPE NCW 2- 2 ◎ ○ ○ ● ○ Press the SET key. ↓ ↓ Gas introduction ◎ ○ ○ ● ○ Introduce a gas, and then press the SET key when the reading is stabilized.
  • Page 63 If there are mistakes, perform the span adjustment again.  If the span adjustment cannot be performed even when there is no mistake or after the correction, the gas sensor life has expired. After turning off the power supply, please contact RIKEN KEIKI.
  • Page 64 7 Maintenance 7-3. Gas calibration method <Flow Sensor Setting "2-6"> Flow rate zero adjustment "2-6.1" This is used to perform the zero adjustment on the flow sensor. CAUTION  Before starting the zero adjustment of the flow sensor, remove the pump and wait until the flow sensor output is stabilized.
  • Page 65 7 Maintenance 7-3. Gas calibration method <Low Flow Rate Threshold Value Setting "2-6.2"> This is used to set the threshold value for low flow rate. CAUTION Set the threshold value for low flow rate to one of the symbols ("a" to "e") printed on the flow sensor.
  • Page 66 7 Maintenance 7-3. Gas calibration method <Flow Sensor Operation Start Setting "2-6.7"> This is used to set the flow sensor operation start. CAUTION  Make this setting only once at the operation start of the flow sensor.  Make this setting after conducting the flow rate zero adjustment and setting the threshold value. 2-6.7 2- 6.7 ◎...

  • Page 67: How To Maintain Flow Sensor

    7 Maintenance 7-4. How to maintain flow sensor 7-4. How to maintain flow sensor Remove the pump. ↓ 2-6.3 Flow sensor zero point check 2- 6.3 ◎ ○ ○ ● ○ Press the SET key. ↓ ↓ Flow sensor zero point check ◎...

  • Page 68: Parts Replacement

    The gas calibration using the standard gas is required after the sensor is replaced. The zero adjustment is required after the flow sensor is replaced. Please make a request to RIKEN KEIKI. <Replacement of Regular Replacement Parts> List of recommended regular replacement parts...

  • Page 69: Storage, Relocation And Disposal

    8 Storage, Relocation and Disposal 8-1. Procedures to store the detector head or leave it for a long time Storage, Relocation and Disposal 8-1. Procedures to store the detector head or leave it for a long time The detector must be stored under the following environmental conditions. ...

  • Page 70: Troubleshooting

    This simply helps to find the causes of malfunctions which frequently occur. If the detector head shows a symptom which is not explained in this manual, or still has malfunctions even though remedial actions are taken, please contact RIKEN KEIKI. <Abnormalities on Unit>...
  • Page 71 9 Troubleshooting <Abnormalities of Readings> Symptoms Causes Actions Drifting of sensor Perform the zero adjustment. output Disturbances by interference gases, such as solvents, Presence of cannot be eliminated completely. For information on interference gas actions, such as removal filter, please contact RIKEN KEIKI.

  • Page 72: Product Specifications

    10 Product Specifications 10-1. List of specifications Product Specifications 10-1. List of specifications [SD-D58・DC(TYPE GP)/ SD-D58・DC(TYPE NC)]＜ATEX Specifications＞ Model SD-D58・DC Type TYPE GP TYPE NC Detection principle Catalytic combustion type New ceramic type Detection gas Combustible gas Display Seven-segment LED (four-digit) Detection range 0 - 100% LEL Depend on detection gas...
  • Page 73 10 Product Specifications 10-1. List of specifications Transmission distance Less than 250m in case of CVVS 1.25mm Less than 450m in case of CVVS 2.0mm Functions Alarm delay/suppression/zero follower Power supply 24 VDC±10% Power consumption Maximum 8.7 W Pressure proof packing gland<G3/4> (Compatible cables 9.0 - 16.0mm in Cable connecting port outer diameter) Tube connecting port...
  • Page 74 10 Product Specifications 10-1. List of specifications [SD-D58・DC(TYPE GP H)/ SD-D58・DC(TYPE NC H)]＜ATEX Specifications＞ Model SD-D58・DC Type TYPE GP H TYPE NC H Detection principle Catalytic combustion type New ceramic type Detection gas Combustible gas Display Seven-segment LED (four-digit) Detection range 0 - 100% LEL Depend on detection gas Resolution...
  • Page 75 10 Product Specifications 10-1. List of specifications Explosion-proof class Ⅱ 2G Ex db ⅡB+H2 T4 Gb Protection grade Equivalent to IP67 Dimension Approx. 197 (W) x 292(H) x 140 (D) mm (projection portions excluded) Weight Approx. 5.8 kg Outer color Munsell 7.5BG5/2 * Specifications subject to changes without notice.
  • Page 76 10 Product Specifications 10-1. List of specifications [SD-D58・DC(TYPE NCW)]＜ATEX Specifications＞ Model SD-D58・DC Type TYPE NCW Detection principle New ceramic type Detection gas Combustible gas Display Seven-segment LED (four-digit) Detection range Depend on detection gas Resolution Depend on detection gas Alarm setpoints Depend on detection gas Detection method Sample-drawing...
  • Page 77 10 Product Specifications 10-1. List of specifications Explosion-proof structure Flame-proof enclosures Explosion-proof class Ⅱ 2G Ex db ⅡB+H2 T4 Gb Protection grade Equivalent to IP67 Dimension Approx. 197 (W) x 292 (H) x 140 (D) mm (projection portions excluded) Weight Approx.
  • Page 78 10 Product Specifications 10-1. List of specifications [SD-D58・AC(TYPE GP)/ SD-D58・AC(TYPE NC)]＜ITRI Specifications＞ Model SD-D58・AC Type TYPE GP TYPE NC Detection principle Catalytic combustion type New ceramic type Detection gas Combustible gas Display Seven-segment LED (four-digit) Detection range 0 - 100% LEL Depend on detection gas Resolution 0.5% LEL...
  • Page 79 10 Product Specifications 10-1. List of specifications structure Explosion-proof class Ex d ⅡB+H2 T4 Gb X Protection grade Equivalent to IP67 Dimension Approx. 197 (W) x 292 (H) x 140 (D) mm (projection portions excluded) Weight Approx. 5.8 kg Outer color Munsell 7.5BG5/2 * Specifications subject to changes without notice.
  • Page 80 10 Product Specifications 10-1. List of specifications [SD-D58・DC(TYPE GP)/ SD-D58・DC(TYPE NC)]＜ITRI Specifications＞ Model SD-D58・DC Type TYPE GP TYPE NC Detection principle Catalytic combustion type New ceramic type Detection gas Combustible gas Display Seven-segment LED (four-digit) Detection range 0 - 100% LEL Depend on detection gas Resolution 0.5% LEL...
  • Page 81 10 Product Specifications 10-1. List of specifications Protection grade Equivalent to IP67 Dimension Approx. 197 (W) x 292 (H) x 140 (D) mm (projection portions excluded) Weight Approx. 5.8 kg Outer color Munsell 7.5BG5/2 * Specifications subject to changes without notice.
  • Page 82 10 Product Specifications 10-1. List of specifications [SD-D58・AC(TYPE GP)/ SD-D58・AC(TYPE NC)]＜TIIS Specifications＞ Model SD-D58・AC Type TYPE GP TYPE NC Detection principle Catalytic combustion type New ceramic type Detection gas Combustible gas Display Seven-segment LED (four-digit) Detection range 0 - 100% LEL Depend on detection gas Display resolution 0.5% LEL...
  • Page 83 10 Product Specifications 10-1. List of specifications Explosion-proof Flame-proof enclosures structure Explosion-proof class Ex d ⅡB+H2 T4(TIIS<Japan>) Protection grade Equivalent to IP67 Dimension Approx. 197 (W) x 292 (H) x 140 (D) mm (projection portions excluded) Weight Approx. 5.8 kg Outer color Munsell 7.5BG5/2 * Specifications subject to changes without notice.
  • Page 84 10 Product Specifications 10-1. List of specifications [SD-D58・AC(TYPE GP H)/ SD-D58・AC(TYPE NC H)]＜TIIS Specifications＞ Model SD-D58・AC Type TYPE GP H TYPE NC H Detection principle Catalytic combustion type New ceramic type Detection gas Combustible gas Display Seven-segment LED (four-digit) Detection range 0 - 100% LEL Depend on detection gas Display resolution...
  • Page 85 10 Product Specifications 10-1. List of specifications Explosion-proof Flame-proof enclosures structure Explosion-proof class Ex d ⅡB+H2 T4(TIIS<Japan>) Protection grade Equivalent to IP67 Dimension Approx. 197 (W) x 292 (H) x 140 (D) mm (projection portions excluded) Weight Approx. 5.8 kg Outer color Munsell 7.5BG5/2 * Specifications subject to changes without notice.
  • Page 86 10 Product Specifications 10-1. List of specifications [SD-D58ꞏAC (TYPE NCW)]＜TIIS Specifications＞ Model SD-D58ꞏAC Type TYPE NCW Detection principle New ceramic type Detection gas Combustible gas Display Seven-segment LED (four-digit) Detection range Depend on detection gas Resolution Depend on detection gas Detection method Sample-drawing Flow rate...
  • Page 87 10 Product Specifications 10-1. List of specifications Explosion-proof Flame-proof enclosures structure Explosion-proof class Ex d ⅡB+H2 T4(TIIS<Japan>) Protection grade Equivalent to IP67 Dimension Approx. 197 (W) x 292 (H) x 140 (D) mm (projection portions excluded) Weight Approx. 5.8 kg Outer color Munsell 7.5BG5/2 * Specifications subject to changes without notice.
  • Page 88 10 Product Specifications 10-1. List of specifications [SD-D58・DC(TYPE GP)/ SD-D58・DC(TYPE NC)]＜TIIS Specifications＞ Model SD-D58・DC Type TYPE GP TYPE NC Detection principle Catalytic combustion type New ceramic type Detection gas Combustible gas Display Seven-segment LED (four-digit) Detection range 0 - 100% LEL Depend on detection gas Resolution 0.5% LEL...
  • Page 89 10 Product Specifications 10-1. List of specifications Explosion-proof class Ex d ⅡB+H2 T4(TIIS<Japan>) Protection grade Equivalent to IP67 Dimension Approx. 197 (W) x 292 (H) x 140 (D) mm (projection portions excluded) Weight Approx. 5.8 kg Outer color Munsell 7.5BG5/2 * Specifications subject to changes without notice.
  • Page 90 10 Product Specifications 10-1. List of specifications [SD-D58・DC(TYPE GP H)/ SD-D58・DC(TYPE NC H)]＜TIIS Specifications＞ Model SD-D58・DC Type TYPE GP H TYPE NC H Detection principle Catalytic combustion type New ceramic type Detection gas Combustible gas Display Seven-segment LED (four-digit) Detection range 0 - 100% LEL Depend on detection gas Resolution...
  • Page 91 10 Product Specifications 10-1. List of specifications Explosion-proof class Ex d ⅡB+H2 T4(TIIS<Japan>) Protection grade Equivalent to IP67 Dimension Approx. 197 (W) x 292 (H) x 140 (D) mm (projection portions excluded) Weight Approx. 5.8 kg Outer color Munsell 7.5BG5/2 * Specifications subject to changes without notice.
  • Page 92 10 Product Specifications 10-1. List of specifications [SD-D58ꞏDC (TYPE NCW)]＜TIIS Specifications＞ Model SD-D58ꞏDC Type TYPE NCW Detection principle New ceramic type Detection gas Combustible gas Display Seven-segment LED (four-digit) Detection range Depend on detection gas Resolution Depend on detection gas Detection method Sample-drawing Flow rate...
  • Page 93 10 Product Specifications 10-1. List of specifications Explosion-proof class Ex d ⅡB+H2 T4(TIIS<Japan>) Protection grade Equialent to IP67 Dimension Approx. 197 (W) x 292 (H) x 140 (D) mm (projection portions excluded) Weight Approx. 5.8 kg Outer color Munsell 7.5BG5/2 * Specifications subject to changes without notice.

  • Page 94: Detection Principle

    10 Product Specifications 10-2. Detection principle 10-2. Detection principle [Catalytic Combustion Type] When a combustible gas burns on the surface of a oxidation catalyst, the catalytic combustion type sensor considers resultant combustion heat as temperature and resistance changes in the platinum wire coil, and measures their gas concentrations.
  • Page 95 10 Product Specifications 10-2. Detection principle [Flow Sensor] The flow sensor has a circuit that can output a contact signal when the flow rate drops below the preset level. The flow sensor is a hot-wire type with a Wheatstone bridge consisting of a detecting element, compensating element, and fixed resistance.

  • Page 96: Definition Of Terms

    11 Definition of Terms Definition of Terms Catalytic This is a principle of the sensor installed in the TYPE GP, TYPE GP H. combustion type See "10-2. Detection principle" for details. This is a principle of the sensor installed in the TYPE NC, TYPE NCW, TYPE NC H. New ceramic See "10-2.

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