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EGM-4 Environmental Gas

Monitor For CO

Operator’s Manual

Version

4.19

For Firmware (EPROM) Version 1.46 and Greater

14 February 2013

PP Systems

110 Haverhill Road, Suite 301

Amesbury, MA 01913 U.S.A.

Tel: +1 978.834.0505

Fax: +1 978.834.0545

Email:

[email protected]

Web Site:

http://www.ppsystems.com

Содержание EGM-4

Страница 1: ...4 19 For Firmware EPROM Version 1 46 and Greater 2012 PP Systems All Rights Reserved 14 February 2013 PP Systems 110 Haverhill Road Suite 301 Amesbury MA 01913 U S A Tel 1 978 834 0505 Fax 1 978 834...

Страница 2: ...This page left intentionally blank for printing purposes...

Страница 3: ...ery 14 CHARGING THE INTERNAL 12V NiMH BATTERY 15 Charge Cycle and LED Indications for 12V NiMH Battery Charger 15 Charge Socket 15 Power Supply Charger 15 Power Switch 16 Operation 17 Main Menu 19 1RE...

Страница 4: ...Serial Outputs 41 5CLR 41 6CLK 42 Diagnostics and Initialisation 43 Diagnostics 43 Initialisation 43 Maintenance 44 Soda Lime Absorber Column 44 Soda Lime 44 MATERIAL SAFETY DATA FOR SODA LIME 45 Ser...

Страница 5: ...n 3CAL on page 35 of this manual All calibration related questions may be directed directly to PP Systems at Telephone 1 978 834 0505 Fax 1 978 834 0545 Email support ppsystems com User Registration I...

Страница 6: ...ent is properly installed operated and maintained in accordance with written instructions i e Operator s Manual The warranty excludes all defects in equipment caused by incorrect installation operatio...

Страница 7: ...to CO2 If this is placed in line in the analysis pipe at the sampling point the water vapor concentration of the analysis air will be brought close to ambient Part No 10049 1 Water Vapor Equilibrator...

Страница 8: ...c Air Filter Filtered sample line hydrophobic Calibration Default value preset in factory Built in Initialization Automatic calibration via keypad if required CO2 Control High and low set points Alarm...

Страница 9: ...icrons A source emitting strongly at this wavelength is a light bulb If this is positioned at one end of a tube and at the other end is placed a sensor that is sensitive to photons at 4 26 microns we...

Страница 10: ...ator s Manual Version 4 19 10 Getting Familiar With The EGM 4 Front Panel Figure 1 EGM 4 Display Front Panel LCD Display 2 x 16 Character Custom tactile keypad Sensor I O Connectors RS232 Connector Ga...

Страница 11: ...Getting Familiar With The EGM 4 EGM 4 Operator s Manual Version 4 19 11 Top of EGM 4 Back Panel of EGM 4 fitted with 12V Lead Acid Battery Back panel of EGM 4 fitted with 12V NiMH Battery...

Страница 12: ...s determined by keypad selection 1 STP 1 Soil Temperature Probe 100 K 2 Not Applicable Used to be used with older sensors 56 K 3 TRP 1 TRP 2 Temperature PAR Probe 36 K 4 PAR 1 PAR Sensor 27 K 5 Not Ap...

Страница 13: ...other connections are required to get a 4 20 mA output from the EGM 4 Applying voltage to the Iout pins higher than 12 V will damage the internal circuitry RS232 Port The EGM 4 has one 9 pin RS232 co...

Страница 14: ...ys There are ten keys that are labelled 0 9 Also there are a few keys that have additional functions The Y R Yes Record key is used to accept settings and to record measurements In addition the Y R ke...

Страница 15: ...ons for 12V NiMH Battery Charger LED Mode Orange Battery not connected Orange Battery initialization analysis Red Fast charge Green with intermittent orange flash Top off charge Green Trickle charge A...

Страница 16: ...PP SYSTEMS FOR THE EGM 4 WILL INVALIDATE THE WARRANTY Please note EGM 4 s can also be powered by an internal rechargeable 12V NiMH battery for extended operation in the field For more information on t...

Страница 17: ...eaches 50 C A final Zero check is then performed before proceeding to the Main Menu Also during warm up several system checks are performed The Checksum message is set to a factory default value of 12...

Страница 18: ...cified by the end user 5V 2000 Range of the voltage signal corresponding to the CO2 concentration POROMETER Refers to the PMR 5 R150 Number of records stored in memory After all system checks have bee...

Страница 19: ...ted See Stand Alone CO2 Analyzer Probe Type 0 on page 20 0 Environmental Monitor With one of our Environmental Sensors such as RH temperature PAR O2 etc See Environmental Monitor Probe Types 1 6 and 1...

Страница 20: ...ensor is present A Absolute pressure in sample cell mb P Refers to probe type See 1REC on page 19 To return to the Main Menu while in Measurement Mode simply press the N key Note If the instrument was...

Страница 21: ...2 Where REC Record Number PLOT Plot Number 19 12 Date 19 th day of December 13 05 Time 1 05 PM Press Key 8 to display the following Display 3 Where A Signal mV from sensor connected to Pin 1 on the 15...

Страница 22: ...the EGM 4 press key 8 X to see the humidity displayed in mb Note If the instrument was just powered up the display will show WARM UP DELAY TEMPERATURE XX until the instrument achieves its warm up temp...

Страница 23: ...ecord Number up to 9999 PLOT Plot Number up to 99 03 04 Date 3 rd day of April 12 40 Time 12 40 PM Note If the plot number needs to be changed press key N when Display 2 above is shown and enter the p...

Страница 24: ...used in fitting the soil respiration rate curve or the final results If you want to save the full set of data press key 1 Note data is collected every 4 8 seconds If 1 is selected ALL the internal mem...

Страница 25: ...air temperature C 4SRDIV 2 Only available from firmware version 1 51 and above Prior to V 1 51 a divisor of 100 was used to convert the four digit SR number in soil respiration units in g m 2 hr limit...

Страница 26: ...is present mb T22 Soil Temperature if optional STP 1 probe is present C A02 11 CO2 exchange Assimilation rate g CO2 m 2 Hour The maximum rate that can be recorded is 99 99 g CO2 m 2 Hour Q0000 PAR mol...

Страница 27: ...1 Soil Respiration Chamber or CPY 4 technical documentation Oxygen Probe Type 9 Immediately after pressing key 1 the instrument will automatically perform a zero check Once completed and assuming no...

Страница 28: ...isplay 2 Where REC Record Number up to 9999 PLOT Plot Number up to 99 03 04 Date 3 rd day of April 12 40 Time 12 40 PM Note If the plot number needs to be changed press key N when Display 2 above is s...

Страница 29: ...esponse Time minutes Chamber Volume 2 2litres Flow Rate litres minute So at a Flow Rate of 1litre minute System Response Time 2 2 minutes Assuming the system is perfectly mixed then there is an expone...

Страница 30: ...tand alone gas analyzer part of an environmental monitoring system when used with any of our available sensors i e TRP 2 SRC 1 Soil Respiration Chamber CPY 4 Canopy Assimilation Chamber etc or as a st...

Страница 31: ...fter 2 minutes then again after 4 more minutes then after 8 minutes and finally after 16 minutes up to a maximum interval set by the ZEROTIME ZEROTIME by default at start up is 20 minutes but it can b...

Страница 32: ...ning on for a ZERO On completion of the Analyzer ZERO the pump will again switch off By default the EGM 4 is set to dynamic sampling with the pump on at all times The general procedure for static meas...

Страница 33: ...rding press key 2 and enter a value not to exceed 720 minutes Note leading zeros are required for values less than 100 i e 005 for 5 minutes The EGM 4 is set to MANUAL recording by default 6ALM There...

Страница 34: ...As long as the high alarm is set to the maximum CO2 ppm range of the instrument the alarm is inactive If set to a lower value when the CO2 concentration exceeds the high setting the alarm will activat...

Страница 35: ...been scrubbed through soda lime 2 Span Gas a user defined CO2 concentration normally a cylinder of certified CO2 composition It is therefore vital that both of these references are accurate For great...

Страница 36: ...i e not changing by more than 1 ppm after 30 seconds press the 0 key Control is passed to the VOUT Set Menu to provide the opportunity to change the scale factor if desired If no change is desired pre...

Страница 37: ...f you are only interested in viewing the CO2 concentration for each record 1 Press key 4 4DMP 2 Press key 1 Screen Display 3 Press the 8 key to display the CO2 concentration for the last stored record...

Страница 38: ...re supplied by PP Systems please refer to the on line help menus built into the software Record Structure A single record consists of 61 characters no spaces The last character is a carriage return Re...

Страница 39: ...000 RH 0000 Air Temp 000 0 4 PAR 1 PAR Sensor PAR 0000 5 PAR 1 LUX 6 Solarimeter 7 Steady State Porometer PMR 4 PMR 5 PAR 0000 RH In 000 0 Temp 000 0 RH Out 000 0 Flow 000 0 GS 0000 8 SRC 1 Soil Respi...

Страница 40: ...ource detector failure Refer to Air Sampling Pump on page 51 Fit properly into manifold Change soda lime Contact PP Systems see PP Systems Contact Information on page 7 Contact PP Systems see PP Syste...

Страница 41: ...the same as the count on the EGM display During Warm up SP W TT CR Where TT is the cell temperature During ZERO SP Z NN CR Where NN is the same as the EGM display count During Diagnostics a data strin...

Страница 42: ...e EGM 4 real time clock press the 6 key The following message should be displayed The date is displayed as day month year and the time is displayed on a 24 hour format The display above shows December...

Страница 43: ...column The Z value should always be greater than the CR value 0 Z Press key 0 to perform an Auto Zero Press Key N to return to the Main Menu Initialisation This feature is available in the event of a...

Страница 44: ...replaced as found Over time the grey foam filter may require replacement If so contact PP Systems PP Systems Contact Information on page 7 It is sensible to examine the absorber column each time the...

Страница 45: ...e away from direct heat sun Protective Measures Avoid inhaling dust Wash hands after handling Industrial Hygiene Keep containers closed Keep contents dry MEASURES IN CASE OF ACCIDENTS AND FIRES Spilla...

Страница 46: ...to determine if a fuse is good or bad Usually a bad fuse will be burned out and visually obvious The true test is to use an ohm meter Place one lead from the ohm meter on one end of the fuse and the...

Страница 47: ...N13 Source by pulling up on it 3 Remove the 4 small screws that secure the infrared source to the end of the sample cell and remove it 4 Fit the new infrared source to the end of the sample cell align...

Страница 48: ...ent to perform a single point calibration with a reference gas if possible See 3CAL on page 35 EPROM The firmware and factory measured calibration factors for the EGM 4 are stored on a memory chip com...

Страница 49: ...hat the 1A fuse is ok This fuse protects the charging circuit and if blown the internal battery will not take a charge Please Note The internal 12V battery should always be fully charged before long t...

Страница 50: ...internal 12V NiMH battery will slowly discharge over time regardless of the state of charge Therefore you must ensure that you charge the instrument fully prior to next use 12V NiMH Battery Specificat...

Страница 51: ...itting of the pump The pump itself is secured in position by the gas tubing connections Finally remove the tubing from the inlet and outlet ports on the pump and lift out Fit the new pump making sure...

Страница 52: ...s dry outside of the EGM 4 overnight If the pumps are reconnected prematurely the absorber chemical soda lime will be exhausted quicker than usual In Line Filter Assembly Hydrophobic The In Line Filte...

Страница 53: ...O Ring for Absorber Column Plug 20041 3 Absorber Column for EGM 4 STD076 Sealed Miniature Rotary Pump ASF 30032 1 Solenoid Valve SBA 4 EGM 4 WMA 4 PC073 1 EGM SBA WMA Infra Red Source Low Range Instr...

Страница 54: ...User Notes EGM 4 Operator s Manual Version 4 19 54 User Notes...

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