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Operating Precautions 

 
This detector is an oxygen deficiency detector that detects oxygen in the air and triggers an oxygen 
deficiency alarm. 
The oxygen deficiency detector is a safety unit, not an analyzer or densitometer which performs 
quantitative/qualitative analysis/measurement for oxygen. 
Please fully understand the following points before using it, so that it can be used properly. 
 
1.  The readings of the detector fluctuate slightly in response to changes in the air pressure. 
 

In particular, be careful of alarm activation when a low air pressure is brought in by typhoon. In addition, 
it may be fluctuated by environmental (temperature, humidity etc.) changes in the installation site. 

 
2.  The alarm must be set within a range where the performance of the detector can be ensured. 
 

The standard alarm setpoint value is 18 vol%. 

 
3.  If use in safety unit, the analog signal output of the detector must be used for an indicator or external 

recorder. 

If these outputs are used to control other units, we shall not be responsible for any malfunctions. 

 
4.  For maintenance of the detector, it must go through a regular maintenance, including replacement and 

adjustment of the regular replacement parts as specified in the operating manual. In addition, because 
this is a safety unit, it is recommended that a regular maintenance and span adjustment are performed 
every six months. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Содержание SD-1DOX-AS

Страница 1: ...PT2E 2625 Smart Transmitter Gas Detector Head SD 1DOX AS TYPE H Operating Manual PT2E 179 PT2 179...

Страница 2: ...addition it may be fluctuated by environmental temperature humidity etc changes in the installation site 2 The alarm must be set within a range where the performance of the detector can be ensured The...

Страница 3: ...o wire 21 4 7 How to tube 25 5 How to Operate 26 5 1 Preparation for start up 26 5 2 Basic operating procedures 26 5 3 How to start the gas detector 27 5 4 Modes 28 5 5 User mode 29 5 6 Flow Rate Adju...

Страница 4: ...s concentration is over the setting value The detector is a safety unit not an analyzer or densitometer which performs quantitative qualitative analysis measurement for gases Please fully understand t...

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Страница 11: ...standard accessories Main Unit Standard Accessories Operating manual one Dedicated handling lever one Dedicated control key The supplied quantity depends on the number of units to be delivered 1 to 10...

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Страница 14: ...o switch menus or change a value DOWN 5 Power lamp Power lamp Detection mode It lights up in green Maintenance mode It blinks in green 6 Alarm lamp Alarm lamp It lights up in red when the alarm setpoi...

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Страница 19: ...ning is impossible the following protective measures can be taken Protection against lightning Take appropriate measures in accordance with the importance of the facilities and the environment Provide...

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Страница 35: ...d if not needed Display Operation Oxygen Concentration Display In case of over the detection range Over Scale is displayed on the LED Power Indicator Lamp POWER Green During operation this lights up c...

Страница 36: ...cess the gas leak point equipped with a protective gear to avoid dangers caused by possibly remaining gases and check whether gases remain or not by using a portable gas detector Check that the point...

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Страница 39: ...as a safety unit Maintenance item Maintenance content Daily mainte nance Monthly mainte nance Regular mainte nance Power Supply Check Check that the power lamp lights up Concentration Display Check C...

Страница 40: ...r to find abnormalities Checks the flow rate by using an external flow meter to verify the correctness of the flow rate indicator on the gas detector If the flow rate is incorrect performs the flow ra...

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Страница 55: ...vide the rated voltage Take measures such as checking or adding the UPS power supply line filter and insulation transformer Cable abnormalities open circuit not connected short circuit Check the wirin...

Страница 56: ...ently take appropriate measures to eliminate the noise Sudden change in the environment When the environment temperature etc changes suddenly the detector cannot adjust to it and is affected by it In...

Страница 57: ...ition Less than 1vol against alarm preset point Alarm delay time 1 under an identical condition By anoxia alarm Alarm preset point 18vol Less than 5sec When introducing 10 11vol gas Without piping del...

Страница 58: ...let Bs union for Cu pipe for O D 8 1 Compressed air inlet BS union for Cu pipe for O D 8 1 Initial clear Approx 25sec Operating temperature 10 40 non rapidly vary Operating humidity Less than 95 RH no...

Страница 59: ...analog transmission digital transmission HART communication or Three wire analog transmission in common with power supply power supply signal common Specification of Transmission DC4 20mA linear load...

Страница 60: ...o wire analog transmission digital transmission HART communication or Three wire analog transmission in common with power supply power supply signal common Specification of Transmission DC4 20mA linea...

Страница 61: ...10 Product Specifications 10 1 List of specifications 59 Outline Drawings Adapter A NPT1 2...

Страница 62: ...1a Non exciting at normal exciting at alarm or exciting at normal non exciting at alarm Contact capacity AC250V 0 5A DC30V 0 5A resistive load Transmission scheme Two wire analog transmission digital...

Страница 63: ...ver Transmission scheme Two wire analog transmission digital transmission HART communication or Three wire analog transmission in common with power supply power supply signal common Specification of T...

Страница 64: ...o recover Transmission scheme Two wire analog transmission digital transmission HART communication or Three wire analog transmission in common with power supply power supply signal common Specificatio...

Страница 65: ...10 Product Specifications 10 1 List of specifications 63 Outline Drawings Cable gland G3 4...

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Страница 67: ...power This is a function to prevent triggering alarm during that time Full scale Maximum value of the detection range Calibration Adjusts the readings to the calibration gas concentration value by usi...

Страница 68: ...0 First issue 3 22 2018 1 Declaration of Conformity 12 23 2019 2 Declaration of Conformity 4 1 2020 3 Safety information Declaration of Conformity 8 1 2020 4 Safety information Declaration of Conformi...

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