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Overview and Installation

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Technical Support

AMETEK is committed to providing you the best technical support in
the industry. If you need service or application assistance, please call
AMETEK at (412) 828-9040.

If you need to return equipment, you will be asked to provide the follow-
ing information before obtaining a Return Material Authorization (RMA)
number.

• Model number

• Serial number

• Telephone number

Before returning material, you must get an RMA number from the
factory.

NOTE

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Содержание 00135086

Страница 1: ...Model 120HD Portable Hydrogen Analyzer User Manual Process Instruments 150 Freeport Road Pittsburgh PA 15238 90629VE Rev C ...

Страница 2: ...pore PVT Ltd 10 Ang Mo Kio Street 65 05 12 Techpoint Singapore 569059 Republic of Singapore Phone 65 484 2388 Fax 65 481 6588 AMETEK FRANCE SAS Rond Point de l épine des champs Buroplus Bat D 78990 Elancourt France Phone 33 1 30 68 89 20 Fax 33 1 30 38 89 29 CHINA AMETEK Process Instruments Room 408 Metro Tower No 30 Tian Yao Qiao Road Shanghai 200030 Phone 8621 6426 7049 Fax 8621 6426 7054 Office...

Страница 3: ... 1 6 Installing the Battery 1 6 Electrical Circuit 1 8 Power Supplies 1 8 Hydrogen Sensor 1 8 Hydrogen Sensor Circuit 1 8 Digital Display 1 8 Chapter 2 Specifications Operating Range 2 1 Accuracy 2 1 Response Time 2 1 Repeatability 2 1 Environment 2 1 Sample Gas Flow Rate 2 1 Sample Pressure 2 1 Power Supply 2 2 Battery Life Approximate 2 2 Power Drain 2 2 Weight 2 2 Chapter 3 Operation Initial St...

Страница 4: ...d may result in damage to the equipment Important information that should not be overlooked Sample Gas Potential hazards of the sample gas should be taken into consideration before connecting the sample to the analyzer Personal protective equipment and proper ventilation should be used if sample gas is toxic flammable or corro sive Check the sample line and all connections for leaks before powerin...

Страница 5: ...ent and to conserve our natural resources AMETEK recommends that you arrange to recycle this product when it reaches its end of life Waste Electrical and Electronic Equipment WEEE should never be disposed of in a municipal waste system residential trash The Wheelie Bin marking on this product is a reminder to dispose of the product properly after it has completed its useful life and been removed f...

Страница 6: ...ppear on the documentation accompanying the equipment being returned declaring that the goods being returned for repair are American goods the name of the firm who purchased the goods and the shipment date The warranty shall not apply to any equipment or part thereof which has been tampered with or altered after leaving our control or which has been replaced by anyone except us or which has been s...

Страница 7: ...xture to be tested is passed through the other chan nel The thermal conductivity of a gas is inversely related to its molecular weight For example hydro gen has approximately six times the conductivity of nitrogen The known or standard gas used with the 120HD is moisture saturated air that is contained in the small chambers where the comparison coils are located The coils are heated by an electric...

Страница 8: ...120HD analyzer 1 120HD Analyzer 00135086 1 Battery Harness Battery Energizer 521 not included with analyzer Spare harness provided to facilitate battery replacement Figure 1 1 Dimensions 120HD Portable Analyzer 9 21 MAX 7 09 0 36 6 12 6 37 9 00 7 55 0 60 5 31 3 152 With Knob 1 at SET adjust CURRENT ADJUST knob until the meter reads 120 0 0 1 With gas flowing turn Knob 1 to TEST The meter will indi...

Страница 9: ...ed service or application assistance please call AMETEK at 412 828 9040 If you need to return equipment you will be asked to provide the follow ing information before obtaining a Return Material Authorization RMA number Model number Serial number Telephone number Before returning material you must get an RMA number from the factory NOTE ...

Страница 10: ... the nut is finger tight 2 Before tightening the nut scribe the nut in the 6 o clock position This is done so that you will be able to know exactly how far to turn the nut as described in Step 3 3 Hold the fitting body steady with a backup wrench and tighten the nut 1 1 4 turns The scribe on the nut should now be in the 9 o clock position Re Tightening Sample Line Connections The sample line conne...

Страница 11: ... the analyzer should be pressure checked at 10 PSIG If the pressure drops at all over a five minute time interval follow the method outlined below and then check all joints for leaks using the snoop or soapy water method 1 Connect the analyzer between two valves as shown in Figure 1 2 2 Set the N2 test gas outlet pressure to 10 PSIG 3 Open Valves 1 and 2 and allow the N2 gas to flow 4 Close Valve ...

Страница 12: ...The red terminal wire is the positive terminal The black terminal wire is the negative terminal Be sure to observe polarity as marked on the battery 5 Replace the terminal screw covers on the terminal posts 6 Slide the battery into the battery compartment with the terminals fac ing outward towards you 7 Plug the jack from the battery harness into the jack outlet on the right hand side of the batte...

Страница 13: ...ery The red terminal wire is the positive terminal The black terminal wire is the negative terminal Replace the terminal screw covers on the terminal posts Be sure to observe polarity as marked on the battery 7 Slide the battery into the battery compartment with the terminals fac ing outward towards you See Figure 1 2 8 Plug the jack from the battery harness into the jack outlet on the right hand ...

Страница 14: ...o degree polynomial Display Input a bx cx2 is used to linearize the hydrogen sensor output x Amplified output x2 Multiplier output a Fixed reference voltage The summing amplifier adds the fixed reference a the amplified sensor output bx and the squared sensor output cx2 This output provides the linearized output signal to the digital display Components on the PCB interconnect board used in lineari...

Страница 15: ...ogen in water saturated air Accuracy 4 full scale 1 H2 Response Time 1 minute for 90 step change Repeatability 2 full scale 0 5 H2 Environment Ambient Temperature 50 to 100 F Relative Humidity 0 to 100 relative Sample Gas Flow Rate 50 ml min Sample Pressure 5 PSIG ...

Страница 16: ...e suggested battery The battery should last at least 120 hours at an operating current of 225 mA Battery capacity required is 27 000 mA hours Battery Life Approximate 120 hours minimum with backlight Analyzer can be used until unable to set to 120 0 Power Drain 210 mA 6V with backlight 170 mA 6V without backlight Weight Less than 15 lb with battery NOTE ...

Страница 17: ... knob until the digital readout displays 120 0 0 1 See Figure 3 1 This adjustment should be made before each reading Low Battery Warning All three decimal points appear on the digital display to indicate a low battery voltage The analyzer can be used with this low battery indica tor displayed but when the battery voltage reaches the point at which it is impossible to adjust the readout to the 120 ...

Страница 18: ...idual gases from previous tests 2 Check and adjust the CURRENT ADJUST if necessary 3 Turn Knob 1 to the TEST position needed either standard display or backlit display Figure 3 1 4 Flow air or nitrogen through the analyzer 5 The digital readout should settle at 0 0 within five minutes If it does not adjust the Electrical Zero Adjust Screw 4 Figure 3 1 until the reading is 00 0 The 120HD is now rea...

Страница 19: ...take a digital read ing while hand pumping the gas sample The pulsing could create a flow effect that might alter the reading 5 The reading is stable when the digital readout does not increase for 30 to 60 seconds A decrease in the reading may indicate that there is a leak in the sys tem and should be invesitgated Follow the procedure Checking for Leaks in Chapter 1 If the sample gas is forced thr...

Страница 20: ...tinuous steady flow rate of gas through the analyzer is preferred Calibration at 10 provides the most accurate results However cali bration at intermediate values 5 15 should result in acceptable performance 5 The reading is stable when the digital readout does not increase for 30 to 60 seconds If the reading is different from the calibration gas value you must adjust the SPAN ADJUST screw Figure ...

Страница 21: ...AN ADJUST Do not perform this adjustment except during a calibration Make sure that Knob 1 is in the TEST position Using a screwdriver adjust the SPAN ADJUST Figure 3 2 so that the digital display reads a concentration identical to the calibration test gas value Turning the screw clockwise will increase the display value in H2 Turning the screw counter clockwise will decrease the display value in ...

Страница 22: ...res a known mixture of hydrogen and air or nitrogen Hydrogen gas is flam mable and in a mixture with air concentrations over 4 5 it is explo sive For this reason mixtures of 20 hydrogen in air generally can t be obtained from commercial sources Do not attempt to make such a mixture and recalibrate the analyzer unless proper equipment personnel and expertise is available Send the analyzer back to t...

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