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. Calibration

7-1. Preparation for air and N2/CO2 calibrations

- 48 -

Calibration

7-1. Preparation

for air and N2/CO2 calibrations

Prepare the following before performing maintenance such as a bump test and air calibration.

Preparation for air calibration

Perform air calibration at maintenance before starting work or if the zero point deviates even though fresh

air is drawn. Before performing air calibration, check that the surrounding air is fresh.

･

Air calibration (P. 21, P . 55)

Preparation for N2/CO2 calibration

<Items to Prepare>

･

Calibration gas: N2 or CO2 of 100 vol% (recommended)

･

Gas sampling bag (*1)

･

Stopwatch

*1 Optional part

<Connection>

Connect the gas detector as shown in the figure below.

Connect a gas sampling bag at an appropriate timing.

Perform calibration in a single step using the concentration of the prepared calibration gas preliminarily

set to the gas detector, or perform it manually by adjusting to the concentration of the prepared calibration

gas.

･

AUTO CAL (P. 58)

･

ONE CAL (P. 60)

Gas sampling

bag

GAS OUT

Tube length: 300 mm

Содержание NP-1000

Страница 1: ...PT0E 1495 Portable Combustible Gas Detector NP 1000 Operating Manual PT0 149...

Страница 2: ...t Display Mode 28 5 1 Entering the display mode 28 5 2 Concentration displayed gas reading setting base 31 5 3 Alarm setpoint display 34 5 4 Pump suction volume setting 36 5 5 Log data display 38 6 Ho...

Страница 3: ...10 2 Procedures to use the gas detector again 73 10 3 Disposal of products 73 11 Troubleshooting 75 11 1 Abnormalities on unit 75 11 2 Abnormalities of readings 76 12 Product Specifications 77 12 1 Li...

Страница 4: ...ed to copy or reproduce this manual in whole or in part without permission Regardless of warranty period we shall not make any indemnification for accidents and damage caused by using the gas detector...

Страница 5: ...tion is performed in the atmosphere check the atmosphere for freshness before beginning it If interference gases exist the adjustment cannot be performed properly thus leading to dangers when the gas...

Страница 6: ...gas detector in a place where it is exposed to direct sunlight Do not store the gas detector in a sun heated car Observe the operating restrictions to prevent condensation inside the gas detector or g...

Страница 7: ...of the four batteries with new ones at one time The conditions for the explosion proof standard of the gas detector include the use of TOSHIBA batteries To use the unit as an explosion proof product u...

Страница 8: ...ctrical specifications Driven by four AA alkaline batteries LR6 manufactured by TOSHIBA Certificate number IECEx IECEx DEK13 0090 ATEX DEKRA 13 ATEX0227 Applied standards IEC60079 0 2017 IEC60079 11 2...

Страница 9: ...ector and accessories If there is anything missing contact RIKEN KEIKI Main unit For names and functions of individual parts of the gas detector and LCD display see Names and functions for each part P...

Страница 10: ...a conductive work floor with a leakage resistance of 10 M or less Replace the batteries in a non hazardous area The specifications of the gas detector are as follows Power supply 6 0 VDC LR6 manufactu...

Страница 11: ...ss this switch to reset the alarm 6 DISPLAY button Press this switch to change between display modes 7 POWER ENTER button Turns the power ON or OFF 8 Gas inlet Connect a gas sampling hose to this port...

Страница 12: ...ncentration and unit 7 Full scale and bar display Displays the level of gas concentration with the bar meter as well as the full scale value 8 Clock display Displays the current time NOTE The meanings...

Страница 13: ...Name Function 1 Gas sampling probe Placed in a detection area to collect a gas The probe includes a dust filter 2 Gas sampling hose A resin hose through which the sampled gas goes 3 Hose clamp couple...

Страница 14: ...led with sufficient battery level The dust filter is not contaminated The gas sampling probe is not loose The hose clamp coupler is connected securely 4 2 1 How to replace the batteries When the gas d...

Страница 15: ...sampling probe and remove the tip section by turning it counterclockwise CAUTION Never fail to turn off the power of the gas detector before replacing the batteries Replace the batteries in a safe pl...

Страница 16: ...ure Insert the hose clamp coupler into the gas inlet of the main unit while pulling the release ring and then release the release ring NOTE Insert the hose releasing coupler to the gas inlet GAS IN si...

Страница 17: ...changes automatically as shown below and the gas detector enters the detection mode 1 Press and hold the POWER button for three seconds or longer Hold it down until all the LCDs and alarm lamp light...

Страница 18: ...the gas detector 18 Full scale Display Display example 100 vol WARNING Setting display Display in setting alarm P 34 Display example 50 vol ALARM Setting display Display in setting alarm P 34 Display...

Страница 19: ...at the last power off is retained If there is an abnormality in the built in clock a fault alarm FAIL CLOCK may be triggered In this case contact RIKEN KEIKI immediately WARNING If the main unit is dr...

Страница 20: ...arms turn off the power and then promptly contact RIKEN KEIKI The backlight goes off after 30 seconds or so of no operation It lights up continuously while an alarm is activated Display Mode Operate A...

Страница 21: ...N2 or CO2 To perform air calibration set a base gas to AIR beforehand For details about the base gas setting see 5 2 Concentration displayed gas reading setting base P 31 LCD display 1 In the detectio...

Страница 22: ...nt or in the fresh air Perform air calibration after the reading is stabilized If there is a sudden temperature change of 15 C or more between the storage and operational locations leave the gas detec...

Страница 23: ...is case take proper actions based on your judgment Issuance of a gas alarm while the gas detector is used for the purposes such as explosion prevention indicates that there are extreme dangers Take pr...

Страница 24: ...f a combustible gas with high concentration such as 100 vol is drawn some gas may remain in the gas sampling hose due to adsorption in the hose gas sampling probe etc After drawing a high concentratio...

Страница 25: ...gas detector With Auto selected the mode is switched between the low and high ranges Press the POWER button The buzzer blips once and the range switches to another every time the button is pressed Lo...

Страница 26: ...data can be recorded When the number of recorded data points reaches the maximum recorded data will be overwritten starting from the oldest data LCD display 1 Press the and buttons The gas detector en...

Страница 27: ...ff Press and hold the POWER button at least three seconds until the buzzer blips four times TURN OFF disappears to turn off the power CAUTION Do not turn off the power while the gas concentration disp...

Страница 28: ...gas detector when a base gas is set to N2 or CO2 When non operation time lasts 20 seconds the gas detector returns to the detection mode automatically The backlight goes off after 30 seconds or so of...

Страница 29: ...setting By changing the setting to the pre registered gas in the gas detector the converted concentration from the detection target gas CH4 will be displayed P 31 Alarm setpoint display Displays the...

Страница 30: ...5 How to Set Display Mode 5 1 Entering the display mode 30 Entering user mode Enters the user mode P 40 Detection mode Returns to the detection mode...

Страница 31: ...ead instead to display its concentration LCD display 1 Press the ENTER button The gas detector enters the base gas setting mode 2 Select a base gas name with the button and then press the ENTER button...

Страница 32: ...on the list of specifications is applied to the calibration gas CH4 only The concentration displayed for a converted reading is a reference value To display an accurate concentration calibration usin...

Страница 33: ...pane C3H8 3 Isobutane i C4H10 4 Argon Ar 5 Helium Hr 6 Hydrogen H2 NOTE Argon Ar and Helium He in the above list are not categorized as combustible gas generally however they are handled by a combusti...

Страница 34: ...y An alarm setpoint can be displayed and activation test can be performed LCD display 1 Press the ENTER button The alarm setpoint display appears Press the DISPLAY button to cancel the operation 2 Sel...

Страница 35: ...splay Mode 5 3 Alarm setpoint display 35 Press the ENTER button to test the selected alarm activation Press any button to reset the alarm 3 Press the DISPLAY button The gas detector returns to the dis...

Страница 36: ...Low Suction volume low or H High Suction volume high LCD display 1 Press the ENTER button The gas detector enters the pump suction volume setting mode Press the DISPLAY button to cancel the operation...

Страница 37: ...isplay Mode 5 4 Pump suction volume setting 37 After END is displayed the gas detector returns to the display mode menu NOTE When the gas detector is restarted the pump suction volume is set to L suct...

Страница 38: ...iewed LCD display 1 Press the ENTER button The gas detector enters the log data display Press the DISPLAY button to cancel the operation 2 Press the button to select the log memory number and then pre...

Страница 39: ...g data display 39 The contents of the selected log gas name and base record are displayed in order When a log is not recorded NO DATA is displayed 3 Press the DISPLAY button to exit The gas detector r...

Страница 40: ...1 In the detection mode press the DISPLAY button six times to display the user mode entry 2 Press the ENTER button The peak bar display setting screen is displayed Press the button to select the menu...

Страница 41: ...6 How to Set User Mode 6 1 Entering the user mode 41 NOTE The backlight goes off after 30 seconds or so of no operation...

Страница 42: ...ed during the period from power on to the point of checking on the bar graph P 43 Date time setting Set the date time of the internal clock P 45 Alarm setpoint setting Set the alarm function to ON OFF...

Страница 43: ...displayed on the bar LCD display 1 Press the ENTER button The gas detector enters the peak bar display setting mode 2 Enable on or disable oFF the peak bar display with the button This is disabled oFF...

Страница 44: ...6 How to Set User Mode 6 2 Peak bar display setting 44...

Страница 45: ...ck LCD Display 1 Press the ENTER button The gas detector enters the date time setting 2 Adjust the date time with the button and press the ENTER button 3 Set year month day hour minute in this order W...

Страница 46: ...ing mode 2 Enable on or disable oFF the alarm function with the button This is disabled oFF by default 3 Press the ENTER button to confirm the selection The first alarm setting screen is displayed 4 S...

Страница 47: ...ting 47 5 Set the second alarm setpoint with the button and then press the ENTER button Set the second alarm setpoint within the following range Hi First alarm setpoint to 100 After END is displayed t...

Страница 48: ...hat the surrounding air is fresh Air calibration P 21 P 55 Preparation for N2 CO2 calibration Items to Prepare Calibration gas N2 or CO2 of 100 vol recommended Gas sampling bag 1 Stopwatch 1 Optional...

Страница 49: ...ation 7 1 Preparation for air and N2 CO2 calibrations 49 CAUTION Do not use a lighter gas to check the sensitivity of the gas detector A constituent of the lighter gas may deteriorate the sensor perfo...

Страница 50: ...lect the menu and press the ENTER button to perform the setting When a password has been set for the calibration mode the password entry screen will be displayed NOTE The backlight goes off after 30 s...

Страница 51: ...ump test The function is tested using a test gas P 53 Air calibration Perform air calibration zero adjustment P 55 N2 calibration CO2 calibration Auto calibration Preset the concentration value of the...

Страница 52: ...n gas P 60 Bump test condition setting Set the bump test operating conditions P 62 Password setting Set a password used to protect the entry to the calibration mode P 64 Return to detection mode To ex...

Страница 53: ...ng see 5 2 Concentration displayed gas reading setting base P 31 LCD display 1 Press the ENTER button The gas detector enters the bump test mode 2 Supply a test gas and press the ENTER button BUMP and...

Страница 54: ...Calibration 7 3 Bump test base gas N2 54 3 Press the ENTER button After the result of the bump test is displayed the gas detector returns to the calibration mode menu FF Fail...

Страница 55: ...ode 2 Hold down the AIR button 3 Release the AIR button when the display changes from AirCL HOLD AIR to AdJ RELEASE Buzzer sound Three times blip blip blip After zero adjustment END is displayed and t...

Страница 56: ...is tested using a test gas LCD display 1 Press the ENTER button The gas detector enters the N2 calibration mode 2 Supply a test gas and press the ENTER button After END is displayed the gas detector d...

Страница 57: ...ion is tested using a test gas LCD display 1 Press the ENTER button The gas detector enters the CO2 calibration mode 2 Supply a test gas and press the ENTER button After END is displayed the gas detec...

Страница 58: ...ng on the factory default setting LCD display 1 Press the ENTER button The gas detector enters the AUTO CAL mode 2 When the preset adjustment value is displayed press the ENTER button The value of AUT...

Страница 59: ...is displayed Press the RESET button to reset the alarm After span adjustment the gas detector returns to the gas concentration display After END is displayed the gas detector returns to the calibratio...

Страница 60: ...may not be displayed depending on the factory default setting LCD display 1 Press the ENTER button The gas detector enters the ONE CAL mode The concentration display blinks and the system waits for th...

Страница 61: ...Calibration 7 8 ONE CAL 61 After span adjustment END is displayed and then the gas detector returns to the calibration mode menu Buzzer sound Once blip 4 Stop supplying the calibration gas...

Страница 62: ...rmed Set range 30 45 60 90 seconds Diagnosis is performed automatically when the set time has passed 3 Press the button 4 Set a threshold for checking a test gas Press the ENTER button When the displa...

Страница 63: ...he ENTER button When the display starts blinking select a value with the button When the ENTER button is pressed END is displayed and the setting is confirmed Set range on Span calibration performed o...

Страница 64: ...2 Select whether or not to set a password with the button The state of on or oFF for the current password protection setting is displayed This is disabled oFF by default 3 Press the ENTER button When...

Страница 65: ...Calibration 7 10 Password setting 65 After END is displayed the gas detector returns to the calibration mode menu Buzzer sound Once blip...

Страница 66: ...enable gas alarm set it to ON and specify an alarm setpoint using Alarm setpoint setting P 46 in the user mode Alarm type First alarm Second alarm Alarm lamp Repeatedly blinks at about one second inte...

Страница 67: ...ls below the alarm setpoint value Non latching auto reset NOTE When the concentration of detected gas falls below the alarm setpoint value the operations of buzzer alarm lamp and vibration will be res...

Страница 68: ...r Repeatedly sounds intermittent beeps at about one second intervals LCD display Display example of low flow rate LOW FLOW If a fault alarm is triggered determine the cause and take appropriate action...

Страница 69: ...y for a fault indication Concentration display check Make the gas detector draw in fresh air and check that the concentration display value is zero When the value is other than zero perform zero adjus...

Страница 70: ...y check Verifies that the concentration display value is zero by using the zero gas Performs the air calibration if the reading is incorrect Flow rate check Checks the flow rate indicator to find abno...

Страница 71: ...llows 1 Wipe away moisture on the gas detector thoroughly using a dry towel cloth etc 2 While holding the gas detector firmly shake it about ten times with the buzzer sound opening facing downward 3 W...

Страница 72: ...service engineer For the stable operation of the gas detector and safety ask a qualified service engineer to take care of replacement of the parts Request RIKEN KEIKI for operation check NOTE The abo...

Страница 73: ...products When the gas detector is disposed of it must be treated properly as an industrial waste in accordance with the local regulations etc CAUTION When the gas detector is used again after a long...

Страница 74: ...ection system and recycling system based on the regulations of EU member states NOTE Crossed out recycle dustbin mark This symbol mark is indicated on the products which contain the batteries which fa...

Страница 75: ...teries are properly installed to the main unit Abnormal operations Disturbances by sudden static electricity noise etc Turn off the power once and then turn it on again restart Cannot operate the gas...

Страница 76: ...place the pump The gas detector is left unused for a long time six months or longer Cycle the power a few times The pump may start operating If the problem still persists request RIKEN KEIKI to replac...

Страница 77: ...etection method Pump suction type with a flow rate of 0 3 L min or more pump L mode Display LCD seven segment numeric display bar meter display 50 divisions and status information display Seven segmen...

Страница 78: ...oof electrical equipment 12 2 List of optional parts 30 m hose Dedicated leather case Filter 2 L gas sampling bag Data logger management program switching pump performance between strong and weak chan...

Страница 79: ...icated in the unit of one hundredth of the volume ppm Gas concentration indicated in the unit of one millionth of the volume LEL The acronym of Lower Explosive Limit Lower explosive limit LEL refers t...

Страница 80: ......

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