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HY-ALERTA™ 1600, Intrinsically Safe Area Hydrogen Monitor 

OPERATING MANUAL 

 

90000012 R8 

 

                             Page 10 of 31 

results in long-term monitoring, allow the unit to settle for a period of one (1) hour in the gas 
composition being monitored prior to use. 

OPTIMUM UNIT PERFORMANCE 

For maximizing the performance of the sensor, the following steps are recommended. 

Verify that all electrical connections and made as recommended. Switching the polarity can cause damage 
to the unit. Ensure that the DC power supply utilized is appropriate and does not have large peak-to-peak 
noise. 

Perform a Field calibration after the installation and conditioning steps described in the Start-up section are 
completed. DO NOT use 0% H2 as the lower calibration gas. Instead use hydrogen concentration that is 
slightly lower than the expected lowest hydrogen concentration (for e.g. if 1% is the expected lowest H2 
concentration, then use 0.5% H2 as the lower calibration gas. 

For the second calibration gas use a concentration that is slightly higher than the expected maximum H2 
concentration.  

If the analyzer gets exposed to extended periods of H2, condition the sensor as described in the Start-up 
section and follow-up with a Field calibration, if needed. 

6.1 

PRESSURE EFFECTS 

The analyzer is hydrogen specific and sensitive to only the hydrogen partial pressure in the air. 
Since changes in total gas pressure will affect the hydrogen partial pressure, they will also affect the 
sensor readings. For instance, at one atmosphere pressure, a 2% H2 concentration  will be reported 
as 2% from the unit. At .9 atm, the reading will decrease to 1.8%.  

Normal atmospheric pressure fluctuations may also manifest as small hydrogen changes.  

At the factory, the units are typically calibrated at one atmosphere pressure.  

Performing the field calibration will compensate for altitude induced inaccuracy. 

OPERATION 

7.1 

ANALOG OUTPUT 

The following parameters are set at the factory per customer specification at time of order, however 
they are user configurable via the serial port.   

The user can request for a specific output current or there are analog output ranges the user can 
select from, which are listed below.  The analog output the user selects is scaled to the user’s 
hydrogen range of interest.  All of this is initially set at the factory per customer specification at the 
time of order.  Below is the table for standard analog output current ranges: 

 

Current Range 

Selection 

Analog Output 

Range 

Power-On Self 

Diagnostic Output 

Error Output 

Standard 

4 mA to 20 mA 

22 mA 

3 mA 

Optional 

0 mA to 20 mA 

0 mA 

20 mA 

 

The selected Analog Output Range is scalable from the low to high levels of the hydrogen sensitivity 
range.  The user can change to another current range of the analog output in the field.  Please refer 
to the “I” command. 

7.2 

DISPLAY 

The upper row of the LCD indicates a numerical value for the percent hydrogen concentration or 
peak hydrogen value.  The lower row of the LCD is used to display the hydrogen meter, a 
logarithmic bar graph ranging from 0.001% (10 ppm) to 100% hydrogen by volume.  An open box on 

Summary of Contents for HY-ALERTA 1600

Page 1: ...LERTATM 1600 Intrinsically Safe Area Hydrogen Monitor OPERATING MANUAL 27215 Turnberry Lane Unit A Valencia CA 91355 USA Tel 661 775 9575 Fax 661 775 9515 E mail sales h2scan com Website http www h2scan com ...

Page 2: ...filled assets Grid Petroleum refinery and other industrial process control Facility and equipment safety to minimize downtime at a much lower total costs of ownership than the competition Our Strategic Objectives H2scan s technology accepted as the new gold standard in hydrogen sensors H2scan s business recognized for innovation and ingenuity high quality products and systems application specific ...

Page 3: ...y 13 9 MAINTENANCE 17 9 1 Cleaning 17 10 CALIBRATION 17 10 1 Factory Calibration 17 10 2 Field Calibration 17 11 FIELD CALIBRATION 17 11 1 Calibration Interval 17 11 2 Gases 17 11 3 Gas Connection 17 11 4 Procedure 17 11 5 Calibration Using the Serial Interface 18 11 6 Calibration Using the Keypad 20 12 CLEAR FIELD CAL 20 12 1 Clear Field Cal Using the Serial Interface 20 12 2 Clear Field Cal Usin...

Page 4: ... any way without the written consent of H2scan Equipment or parts that have been damaged due to shipping misuse accidents mishandling neglect or problems with electrical power sources Repair work performed during the warranty period does not prolong the warranty period past the original period System operation in incorrect or inappropriate environments Usage that is not in accordance with system g...

Page 5: ...vity to other combustible gases eliminating false positive alarms and ensuring safety system reliability 2 SPECIFICATIONS Sensitivity Range 0 4 to 5 hydrogen by volume at 1 ATM 10 to 125 hydrogen lower flammable limit Accuracy 0 03 x indication 0 2 percent hydrogen by volume Example accuracy at 1 H2 is 0 23 H2 Response Time T90 of 60 sec maximum Temperature Ambient Operating Storage 20 to 40 C 40 ...

Page 6: ... Hydrogen Monitor OPERATING MANUAL 90000012 R8 Page 6 of 31 Figure 1 Dimensions in inches 3 ATEX RATING The HY ALERTA 1600 monitor is certified with a dual zone rating Electronics Assembly is Zone 1 2 G Ex ib Probe Tip is Zone 0 1 G Ex ib d ...

Page 7: ...THE UNIT IS INSTALLED IN A CLASSIFIED LOCATION THEN IT IS THE RESPONSIBILITY OF THE USER AND INSTALLER TO MAKE CONNECTIONS TO RELATED EQUIPMENT IN A MANNER CONSISTENT WITH THE LOCATION CLASSIFICATION 4 1 ASSOCIATED EQUIPMENT Only H2scan specified cables should be used with this Analyzer The maximum length for intrinsically safe operation of both the Power Analog Cable and the Serial Interface Cabl...

Page 8: ...as Typical installations are near the ceiling level above equipment using or storing hydrogen For earlier detection artificial means of accumulation such as flat plates or inverted trays can be installed at lower heights to allow hydrogen to reach the sensor more quickly WARNING IT IS NOT THE INTENT OF THIS MANUAL TO SPECIFY MOUNTING LOCATION S IT IS THE REPONSIBILITY OF THE USER AND INSTALLER TO ...

Page 9: ...mber in color during warm up It will become green amber or red when the unit is ready The following operations will be completed in this warm up sequence Heat the sensor to operating temperature Perform the Power On Self Test POST The analyzer is designed to be exposed to air with no hydrogen most of the time For optimal performance keep any hydrogen exposure to the sensor to less than one hour If...

Page 10: ...also affect the sensor readings For instance at one atmosphere pressure a 2 H2 concentration will be reported as 2 from the unit At 9 atm the reading will decrease to 1 8 Normal atmospheric pressure fluctuations may also manifest as small hydrogen changes At the factory the units are typically calibrated at one atmosphere pressure Performing the field calibration will compensate for altitude induc...

Page 11: ...u Information Disp model information Firmware Rev firmware revisions Serial Number model serial number Calibration Date date of the last factory calibration Set Alert Alarm Define hydrogen level that will trigger the alert and alarm signals Alert Level the level of hydrogen that will cause the LED to turn amber Alarm Level the level of hydrogen that will cause the LED to turn red Set H2 Range Defi...

Page 12: ...r Terminal Newer versions of Windows do not These versions require installing a third party program There are many inexpensive or free programs available FoxTerm a free program is used extensively by H2scan 8 2 CONNECTION Connect the sensor to the serial port using whatever barriers and adapters are required If a USB adapter is used install the driver according to its instructions In Windows look ...

Page 13: ...d will resume continuous display if in Level 0 or return to prompt if in Level 1 Level 0 Commands Keystroke Description ESC Stops continuous display to enter a password or command If in level zero the continuous display will resume after executing one command sp spacebar Pressing the Space key while the serial output is active will display a label line showing the heading for each column of data A...

Page 14: ...s default settings refer to the FORMAT and OPTIONS section H low high Set the hydrogen reporting range low to high in H2 I low high err not rdy Set the DAC current output range low to high error output err and not ready output not rdy milliamps Possible range from 0 to 20 milliamps L fmt opt Print current hydrogen reading Used to poll for hydrogen readings Default format fmt is current setting ref...

Page 15: ...0 0 0 0 Include sensor temperature 0 0 0 1 0 0 0 0 Include resistor reading 0 0 0 0 0 1 0 0 Include overall hydrogen reading 0 0 0 0 0 0 1 0 Include peak hydrogen reading 0 0 0 0 0 0 0 1 Options opt The Options opt string is a two character hexadecimal representation of an 8 bit value derived from the following table The user determines which data are needed and selects that bit value Once all sel...

Page 16: ...rt this 4 bit value combination into a two place hexadecimal value fmt Two Place Hexadecimal Value B3 From the OPTIONS opt table above you identify your desired columns with its corresponding bit value opt Descriptions opt Bit Value Calculations Errors 0000 0100 Heater State 0000 0010 opt 4 Bit Value Combination 0000 0110 Again use the 4 BIT TO HEXADECIMAL table to convert this 4 bit value combina...

Page 17: ...5 0 2 slpm One gas will correct any offset error while two gasses will also correct any gain error It is recommended to use two gasses to obtain superior calibration accuracy DO NOT use 0 H2 as the lower calibration gas Instead use hydrogen concentration that is slightly lower than the expected lowest hydrogen concentration For the second calibration gas use a concentration that is slightly higher...

Page 18: ...Monitor OPERATING MANUAL 90000012 R8 Page 18 of 31 11 6 CALIBRATION USING THE SERIAL INTERFACE Press Esc The unit will return the command prompt H2scan Type f then hit Enter and follow prompts to field calibrate the sensor with two gas concentrations ...

Page 19: ...age cap 0 00000 res x xxxxx Calibration Gas 1 finished Gas2 for res Y N Type y if desired for better accuracy Cal Gas X XXX H2 Y N Type n if incorrect Enter gas Enter the hydrogen concentration by volume Cal Gas X XXX H2 Y N Type y if correct Settle time X min Y N Type n if incorrect Enter time Enter the duration in minutes for gas 2 Settle time X min Y N Type y if correct Streaming data Apply X X...

Page 20: ...wn a delay For example during field calibration the sensor is expecting the gas to be applied for a certain length of time In this case WAIT_XXX will appear counting down the remaining time Wait_100 continuously displayed is a special case It appears when the sensor is waiting for an event that will not occur at a particular time Once this event occurs it changes to a counter initialized to some v...

Page 21: ...ers representing eight bits with each bit representing an error If more than one error occurs concurrently their values will add For example if there is an error calculating hydrogen and the H2 resistor is out of range the error code will be 90 Many of these errors could lead to a htroff error Error Code hex Error calculating hydrogen 80 PCB temperature is too high 40 Sensor temperature is out of ...

Page 22: ...eded Open a new session window Select the correct port as determined above COM3 in this example Setup the session as shown below Select a log file name and location The file name should start with the current date YYYMMDD followed by any particular information required This way the files will be easy to sort For example 20110920Yukon6 log would be the file name for the Yukon6 sensor that had loggi...

Page 23: ... Hydrogen Menu Hydrogen 0 H Information Disp Set Alert Alarm Set H2 Range Configure IDAC Field Calibrate 0 0 00 H See Info Display Menu H See Alert Menu H See H2 Range Menu H See Configure IDAC Menu H See Field Calibrate Menu H Exiting Menu Main Menu H2Scan Hydrogen Sensor Warmup_XX 15 APPENDIX 2 MENUS ...

Page 24: ... Safe Area Hydrogen Monitor OPERATING MANUAL 90000012 R8 Page 24 of 31 Hydrogen 0 Peak H2 0 Clearing H2 Peak Hydrogen Menu Information Disp Firmware Rev S1 53i C1 17i Serial Number Factory Cal Date 0 0 00 Information Display Menu ...

Page 25: ...000012 R8 Page 25 of 31 Set Alert Alarm H Alert Level X XXX H2 H Alarm Level X XXX H2 Configure Relay Menu H Change to X XXX H2 H H Change to X XXX H2 H Set H2 Range H Low H2 Range X XXX H2 High H2 Range X XXX H2 Set H2 Range Menu H Change to X XXX H2 H H Change to X XXX H2 H ...

Page 26: ...onitor OPERATING MANUAL 90000012 R8 Page 26 of 31 Configure IDAC H Low Range X XXX mA High Range X XXX mA Configure IDAC Menu H Change to X XXX mA H H Change to X XXX mA H Error X XXX mA Not Ready X XXX mA H Change to X XXX mA H H Change to X XXX mA H ...

Page 27: ...ensor Done Apply X XXX H2 Continue Continue Apply X XXX H2 Settle Continue Hydrogen X XX Wait XXX Hydrogen X XX Finding Average XXX Apply X XXX H2 Continue Continue Apply X XXX H2 Settle Continue Hydrogen X XX Wait XXX 2 gasses Y N Enter Date 6 M Hydrogen X XX Finding Average XXX Enter Date 15 D Enter Date 12 Y Clear Field Cal In Progress Calibrate Sensor Not Done Field Calibrate Menu Apply 0 H2 C...

Page 28: ...HY ALERTA 1600 Intrinsically Safe Area Hydrogen Monitor OPERATING MANUAL 90000012 R8 Page 28 of 31 16 APPENDIX 3 16 1 CONTROL DRAWING ...

Page 29: ...HY ALERTA 1600 Intrinsically Safe Area Hydrogen Monitor OPERATING MANUAL 90000012 R8 Page 29 of 31 ...

Page 30: ...HY ALERTA 1600 Intrinsically Safe Area Hydrogen Monitor OPERATING MANUAL 90000012 R8 Page 30 of 31 ...

Page 31: ... BARRIER SWITCH SETTINGS FOR RS232 CONNECTION TO PC Manual copyright 2012 H2scan Instrument software copyright 2012 H2scan Wide Range SensorTM protected under US patent number 5 279 795 BARRIER SWITCH 1 2 3 4 5 6 7 8 SWITCH 3 ON ON ON OFF ON OFF ON OFF SWITCH 2 ON ON OFF OFF OFF OFF OFF OFF SWITCH 1 ON ON ON ON ...

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