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Bacharach H-25C Instruction

Manual is about: INDUSTRIAL HALOGEN LEAK DETECTOR

Summary of H-25C

  • Page 1

    H-25c industrial halogen leak detector instruction 3015-0216 operation & maintenance rev.0 product leadership z training z service z reliability.

  • Page 2

    H-25c instruction manual instruction 3015-0216 2 table of contents introduction ..................................................................................................................................4-9 1. H-25c leak detector applications......................................................

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    H-25c instruction manual instruction 3015-0216 3 4. Measurement operations .......................................................................................................33-42 4.1 choosing a location for the h-25c, and getting ready to start measurement .........................................

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    H-25c instruction manual instruction 3015-0216 4 introduction 1. H-25c halogen leak detector applications 2. Unpacking and initial checks 3. Warranty 4. Procuring and storing frequently replaced maintenance items 5. Operating precautions 6. Preparing for use 7. Special symbols and formatting used in...

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    H-25c instruction manual instruction 3015-0216 5 3. Warranty failures occurring within one year of the purchase date will be repaired free of charge if the problem is determined to clearly be the responsibility of bacharach. Note this warranty does not apply to the sensor and filters (probe filter, ...

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    H-25c instruction manual instruction 3015-0216 6 5.2 avoiding problems • please strictly observe the following: always power the h-25c from the proper ac line voltage for its specification. Always set the supply voltage selector switch to the proper position for the voltage in use. Transformer damag...

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    H-25c instruction manual instruction 3015-0216 7 the parts in instruments manufactured before september '94 are different..

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    H-25c instruction manual instruction 3015-0216 8 preparing for use & measurement and calibration preparing for use operation remarks 1. Install the sensor 2. Set the switches • supply voltage selector switch • type-of-gas selector switch • measuring units selector switch (1) measurement unit selecti...

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    H-25c instruction manual instruction 3015-0216 9 7. Special symbols and formatting used in this manual • the display state (lit or flashing) is indicated in figures as follows:.

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    H-25c instruction manual instruction 3015-0216 10 1. Names and functions of components (model codes, specifications, gases measured, calibration gas flow) 1.1 setup area details.

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    H-25c instruction manual instruction 3015-0216 11 1.2 model codes model suffix codes description h-25c auto cal function -n -1 no (calibrate manually with external gas source yes (both auto and manual calibration possible) contact output -n -1 no relay yes dry contact relay output supply voltage -5 ...

  • Page 12

    H-25c instruction manual instruction 3015-0216 12 1.3 specifications specifications gas measured: sensor: measurement range: alarm point setting range: measurement modes: measurement units: response time: calibration: output signal: contact output: displays: audio speaker: supply voltage; power cons...

  • Page 13

    H-25c instruction manual instruction 3015-0216 13 1.4 probes 1.5 accessories and maintenance tool list item name part number remarks filter (for s-type probe) 3015-1820 unit of purchase : 1 piece filter, o-ring (for l-type probe) 3015-1705 unit of purchase : 1 set (one piece each) activated – charco...

  • Page 14

    H-25c instruction manual instruction 3015-0216 14 1.6 internal flow paths • measured gas internal flow path.

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    H-25c instruction manual instruction 3015-0216 15 2. Preparing for use this section explains the switch settings and other procedures that must be done to prepare the instrument for use. For operating instructions, see section 4. 2.1 installing the sensor note: the sensor may deteriorate during stor...

  • Page 16

    H-25c instruction manual instruction 3015-0216 16 2.2 setting the switches 2.2.1 setting the supply voltage selector switch note: the h-25c comes with three different supply voltage specifications, 100/115 vac, 100/200 vac, or 120/240 vac. The frequency can be either 50 or 60 hz. Use the supply volt...

  • Page 17

    H-25c instruction manual instruction 3015-0216 17 2.2.4 setting the “relay” (relay state selector) switch note: the “relay” switch (3) must be set if the instrument is equipped with the alarm contact signal output function. The alarm contact signal is output when the leak flow is greater than or equ...

  • Page 18

    H-25c instruction manual instruction 3015-0216 18 2.2.5 setting the “mode” (measurement mode selector) switch select the measurement mode using the mode (measurement mode selector) switch. There are two measurement modes, a-type and b-type. For detecting leaks in a normal atmosphere, set the switch ...

  • Page 19

    H-25c instruction manual instruction 3015-0216 19 2.2.7 setting the “cal” (calibration mode selector) switch there are two calibration modes: automatic calibration mode and manual calibration mode. If the instrument is not equipped with the auto calibration function, then only manual calibration mod...

  • Page 20

    H-25c instruction manual instruction 3015-0216 20 2.2.9 setting the “gain” (search mode sensitivity) switch the setting results here are valid only for the search mode i a-type measurement mode. Raising the sensitivity in order to detect lower values makes it easier to locate leaks. The sensitivity ...

  • Page 21

    H-25c instruction manual instruction 3015-0216 21 2.3 connecting the probe connect the accessory probe to the “probe” connection socket on the instrument front panel and secure it with the lock ring. Note that the probe connection socket gas intake port is covered with a protective cap, which you mu...

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    H-25c instruction manual instruction 3015-0216 22 when power is applied, the display will appear as shown below..

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    H-25c instruction manual instruction 3015-0216 23 2.6 calibration gas secondary pressure adjustment note: this adjustment is required in the instrument equipped with the auto calibration function. The calibration gas secondary pressure adjustment is done during the approximately three minutes of the...

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    H-25c instruction manual instruction 3015-0216 24 the bar graph indication displays the amount of leakage. When the probe switch is not being pressed, the instrument is in search mode and the indicated value is based on the value of the search mode alarm point value. The data display area shows the ...

  • Page 25

    H-25c instruction manual instruction 3015-0216 25 2.8 adjusting the speaker tone volume the speaker volume is adjustable. Adjust if necessary (to the appropriate level for the area where you will use the instrument) using the tones heard while performing the calibration operation of section 2.7. The...

  • Page 26

    H-25c instruction manual instruction 3015-0216 26 3. Calibration the model h-25c halogen leak detector performs calibration when the detector is first used (including sensor sensitivity adjustment and sensor replacement) or when " calibration request " appears in a-type measurement mode. Calibration...

  • Page 27

    H-25c instruction manual instruction 3015-0216 27 bacharach.

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    H-25c instruction manual instruction 3015-0216 28 3.1 auto calibration this auto calibration procedure can be used only if the instrument is equipped with the auto calibration option. Auto calibration is not possible when the measurement mode is set to b-type; always set the mode to a-type for auto ...

  • Page 29

    H-25c instruction manual instruction 3015-0216 29 continue to hold the probe in the inserted position until the countdown (starting from 7) on the display reaches 0. (leave the instrument in search mode; do not press the pass/fail switch on the probe.) when the countdown reaches 0, the instrument’s ...

  • Page 30

    H-25c instruction manual instruction 3015-0216 30 3.1.3 what to do if the cal fail indicator appears if the cal fail indicator appears during calibration, no calibration is performed. When cal fail indicator appears, one of the following five fail codes is displayed on the data display area while th...

  • Page 31

    H-25c instruction manual instruction 3015-0216 31 3.2 manual calibration use the manual calibration method ff the instrument is not equipped with the auto calibration option. Manual calibration is possible in both a-type and b-type measurement modes. Note : an ls - 20b leak standard is required for ...

  • Page 32

    H-25c instruction manual instruction 3015-0216 32 3.2.4 what to do if the alarm code appears unlike when the fail code is displayed, calibration is performed when the alarm code is displayed. When the data for calibration approaches the allowable limit, an error code (a-1 to a-3) is displayed for ab...

  • Page 33

    H-25c instruction manual instruction 3015-0216 33 4. Measurement operations this chapter explains how the h-25c works, and how to detect leaks with it. Note that before doing any of the operations described here, you must first complete the operations described in section 2 (switch setup, etc.) to p...

  • Page 34

    H-25c instruction manual instruction 3015-0216 34 (3) wiring the alarm contact output terminals (if equipped with contact output function) (3) if you wish, you can order the h-25c with a function that outputs a contact signal when the measured value exceeds the alarm point. If your instrument has th...

  • Page 35

    H-25c instruction manual instruction 3015-0216 35 • is the "air flow" indicator on ? (check in measurement mode) the " air flow" indication tells you that the intake air flow is being reduced due to clogging of the probe air filter, or some other cause. Under normal conditions, the instrument will s...

  • Page 36

    H-25c instruction manual instruction 3015-0216 36 4.2 measurement 4.2.1 measurement modes the h-25c has two main measurement modes, a-type and b-type. Use the mode switch to select the mode to be used (see subsection 2.2.5). A-type mode is used if there is very little unwanted gas in the surrounding...

  • Page 37

    H-25c instruction manual instruction 3015-0216 37 note : the search mode alarm point simply represents the value of the 100% point determined by the sensitivity ("gain" switch setting). The search mode alarm point does not initiate any action. • whenever the sensor output level is below the search t...

  • Page 38

    H-25c instruction manual instruction 3015-0216 38 [auto-zero] the sensor will output some voltage even for pure air. This is called the background voltage (or potential, or level). If freon and i or other gases are present in the ambient atmosphere, voltage components due to those gases will add to ...

  • Page 39

    H-25c instruction manual instruction 3015-0216 39 4.2.4 leak rate measurement in b -type mode to measure how much freon gas is leaking from a leak you have found, use auto-zero hold mode. The instrument goes into this mode when you hold the probe switch depressed. To measure the leak rate, you basic...

  • Page 40

    H-25c instruction manual instruction 3015-0216 40 4.2.6 how to check the measured value, and possible reasons for abnormal operation [how to check the measured value] to check for error in the measured value, set a leak standard for a known constant leak rate, let the probe suck in the gas, and exam...

  • Page 41

    H-25c instruction manual instruction 3015-0216 41 • " calibration requests " are being issued too frequently. Activated charcoal filter performance is deteriorating. • " cal fail " indicator is displayed (flashing). Calibration gas freon in the tank has been used up. (see section 5.3 for corrective ...

  • Page 42

    H-25c instruction manual instruction 3015-0216 42 4.3 r-12 leak detection the leak detector sensor for measuring r-134a requires a much greater sensitivity than for measuring r-12. Since the h-25c has a very sensitive sensor, it generates a very large output for r- 12. This causes any unwanted gas i...

  • Page 43

    H-25c instruction manual instruction 3015-0216 43 5. Maintenance regular maintenance of your h-25c is required to maintain its performance. This chapter explains how to perform scheduled periodic replacements of consumable items and those parts that are known to deteriorate over time. For guidance o...

  • Page 44

    H-25c instruction manual instruction 3015-0216 44 5.2 replacing the activated charcoal filter the measured gas going to the sensor is split into two a by a manifold, one stream being introduced with no treatment, the other being introduced after being passed through the activated charcoal filter to ...

  • Page 45

    H-25c instruction manual instruction 3015-0216 45 (6) install the filter in the case as follows: (a) first, squeeze the filter to fit it into the circular case. (see figure 5.3) (b) insert the filter into the case. Holding the seam 1) of the filter, fold both sides 2) and c3 into the case, then push...

  • Page 46

    H-25c instruction manual instruction 3015-0216 46 5.3 refilling the tank with freon this maintenance operation is applicable only if the instrument has the auto calibration option. The r134a held in the tank for calibration use is consumed at a rate of 10 x 10-5 std. Ml/s. When the calibration gas s...

  • Page 47

    H-25c instruction manual instruction 3015-0216 47 handle), allowing the air to be expelled as the liquid r - 134a enters. After a short while some misty liquid r 134a will begin to spray out in a mist. Wait about 10 seconds after the mist begins spraying out, and then close the tank valve. Also be s...

  • Page 48

    H-25c instruction manual instruction 3015-0216 48 (4) return the " heater " variable resistor adjustment shaft to its starting position. First, turn it counterclockwise until you reach the limit of rotation, then turn it back clockwise 12 full turns. (5) adjust the sensor sensitivity so that the bar...

  • Page 49

    H-25c instruction manual instruction 3015-0216 49 6. Troubleshooting this chapter explains how to identify and take corrective action for certain types of malfunctions. If you find that the malfunction is due to actual failure of the instrument hardware, contact your bacharach representative for ser...

  • Page 50

    H-25c instruction manual instruction 3015-0216 50 6.2 possible causes of malfunctions, and what to do if they occur table 6.1 lists the most common malfunctions (symptoms). Subsections 6.2.1 through 6.2.10 show what can cause these symptoms, and what to do if they occur. When it happened symptom wha...

  • Page 51

    H-25c instruction manual instruction 3015-0216 51 (2) air is leaking into the probe through the probe seal ( 0 -ring or gasket check whether or not the nut (rod) is loose. For the l-type probe, check whether or not the 0 -ring is in place. (3) contamination deposited on manifold internal flow path s...

  • Page 52

    H-25c instruction manual instruction 3015-0216 52 [if occurring during countdown at power-on:] note: verify that the steady-on or flashing condition recurs. (1) eeprom failure. Return to bacharach for repair (component replacement, adjustment). [if occurring during calibration] (2) sensor sensitivit...

  • Page 53

    H-25c instruction manual instruction 3015-0216 53 [reference] facilities for ridding the atmosphere of unwanted gases where leakage inspections are made sensors in the h-25c halogen leak detector sense exhaust gases from automobiles and volatilized gases from organic solvents, floor cleaning agents,...

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    H-25c instruction manual instruction 3015-0216 54 [example of facility 2] reference figure 2 shows an example of facility for efficiently implementing leakage inspection. This facility is also provided with countermeasures to prolong the service life of sensors and activated charcoal filters. If the...

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    H-25c instruction manual instruction 3015-0216 55 customer maintenance parts list item part no. Qty. Description item part no. Qty. Description 1 2 3 4 5 6 7 8 9 10 11 12 3015-1113 3015-4181 3015-1134 3015-2753 3015-1209 3015-1310 3015-2363 3015-2398 3015-2418 3015-1630 3015-0807 - 3015-2552 3015-25...

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    H-25c instruction manual instruction 3015-0216 56 item part no. Qty. Description 1 2 3 4 5 6 7 8 3015-1200 3015-2668 3015-2672 3015-2676 3015-0947 3015-1545 - 3015-2096 3015-2102 3015-2108 3015-2114 3015-1194 1 1 1 1 1 1 1 1 tank assembly w/freon o-ring o-ring o-ring o-ring printed-circuit assembly ...

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    H-25c instruction manual instruction 3015-0216 57 sales / service centers u.S.A. Bacharach sales/service center - california 7281 garden grove blvd., suite h garden grove, ca 92841 tel.: 714-895-0050 fax: 714-895-7950 e-mail: calservice@bacharach-inc.Com bacharach sales/service center - georgia 2 da...

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    H-25c instruction manual instruction 3015-0216 58 notes:.

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    World headquarters 621 hunt valley circle, new kensington, pa 15068 ph: 724-334-5000 • fax: 724-334-5001 • toll free: 1-800-736-4666 website: www.Bacharach-inc.Com • e-mail: help@bacharach-inc.Com printed in u.S.A..