Geoprobe® Direct Image® MP6500
Contents
1. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Part Number FC4000 MP3500 MP3517 MP4510 MP3512 16172 AT6621 SC160 SC161 MP2515 MP2550 SC153 13700 12457 Part Number 10245 10824 10167 10809 10075 Part Number 13999 15698 AT1004 10344 13940 18355 SC610 SC650K SC675 AT1255 18181 GH1255 9641 19011 Membrane Interface Probe MIP Gas Chromatograph GC with Detectors or Freestanding Detectors FC4000 Field Instrument MP3500 MIP Controller MIP Trunkline gas tubing and electrical wiring Rod Rack with Probe Rods Pull Cap and Drive Cap 0 Stringpot for depth measurement Wiring Cavity MIP Probe Stringpot Piston Weight f Soil Electrical and Bottom Clamp 6 lt lt a is Conductivity N N Probe Figure 3 1 MIP system components Standard Operating Procedure 5 Membrane Interface Probe MIP 4 0 Quality Control Response Testing Response testing is an important quality control measure used to validate each log by proving that the integrity of the system is intact Without running a response test the operator will not know if the system is detecting the correct compounds or even if the system is working 4 1 Preparation for Response Testing Response testing is a necessary part of the MIP logging process because it ensures that the entire system is working correctly and also enables the operator to2. created by your name This is the Stock Standard The equation used for making a stock standard is shown on the following page Table 4 1 Density and required volumes of neat compounds used to make a 50 mg mL working standard into 25 ml of methanol Volume of Neat Analyte Required Compound Density mg uL to Prepare a Working Standard uL Benzene Toluene Carbon Tetrachloride PCE TCE Standard Operating Procedure 6 Membrane Interface Probe MIP 25 mL methanol 50 mg mL 1250 mg 1250 mg x 1 density of analyte amount of neat material to be placed into 25 mL of Methanol Example Preparation of 50 mg mL Benzene standard 1250 mg x 1 0 8765 mg uL 1426 uL Use 1426 uL of neat Benzene in 25 mL of Methanol to get a 50 mg mL standard 4 2 Response Test Procedure With the standard prepared the operator is ready to test the response of the probe as described below 1 Obtain 500 mL of water either tap water or 10 uL Immerse the probe into the 5 gallon bucket of fine sand and water to stabilize the baseline Table 4 2 This is necessary due to the sensitivity of the Volume of 50 mg mL working standard and final concentration in 0 5 L test sample volume photoionization detector PID and the electron capture detector ECD to water Volume of 50 mg mL Standard Final Concentration of Access the MIP Time software and view the 0 5 L Sample mg L or ppm detector vs time data The
3. B of this document Section 1 2 Manual Contents Section 2 0 discusses the general inputs and outputs of the MP6500 MIP controller made by Geoprobe Systems Topics covered include General use front and rear panel component identification connections to the FC4000 field instrument carrier gas controls indicators safety concerns and necessary schematics Section 3 0 is a quick start section designed to provide the experienced MIP user up and running quickly with the MP6500 system by pointing out key differences and operating points 1 1 Section 2 0 MP6500 MIP Controller Section 2 1 Introduction The Membrane Interface Probe MIP System manufactured and licensed by Geoprobe Systems is used for the in situ detection of volatile organic compounds VOCs in the subsurface Using this system a heated probe carrying a permeable membrane is advanced to depth in the soil VOCs in the subsurface which cross the membrane enter into a carrier gas stream and are swept to gas phase detectors at ground surface for measurement The MP6500 series controller is the main operating component for the MIP contaminant detection system The MP6500 series controller regulates gas flow and probe temperature in the MIP system and provides digital conversion of analog detector signals as well as other internal devices used with the MIP system The MP6500 series controller is only compatible with Geoprobe MP6510 series probes The MP6500 consists of
4. a pressure regulator this device is also an on off valve for the carrier gas Carrier gas nitrogen helium hydrogen argon or compressed air depending upon the detector used with the system should be supplied to the rear panel of the controller at 30 to 60 psi 2 to 4 bars The primary regulator should be adjusted to 20 psi 1 4 bars Rotating the black knob all the way to the right clockwise opens the regulator With the regulator open the output pressure is adjusted by using a flat blade screwdriver in the stem embedded in the center of the knob Output pressure for this regulator is indicated on the pressure gauge located immediately above the regulator Be sure to use only light finger pressure to open or close the requlator value It is good practice to shut this valve off at the end of each working day To do this rotate the black knob all the way to the left counterclockwise By opening the valve all the way to the right the regulator will return to its previously adjusted pressure setting Mass Flow Controller The purpose of this controller is to provide a constant flow of carrier gas through the trunkline The mass flow controller is an important control to understand for successful MIP usage This device works by opening or 2 5 closing a feed valve in response to changes in downstream friction losses or restrictions Clockwise rotation of the controller knob will increase carrier flow and counterclockwise rotation
5. detector signals 1000 uL should be stable before proceeding 100 uL distilled in a suitable measuring container Use 8 standard volume specified in Table 4 2 to mix the desired test concentration This is the Working Standard Pour the working standard into a nominal 2 inch x 24 inch PVC pipe and immediately insert the MIP into the solution Fig 4 1 Leave the probe in the test solution for 45 seconds At the end of 45 seconds place the probe back in the 5 gallon bucket of sand and water From the results on the MIP Time software the trip time and response time can both be measured Fig 4 2 Figure 4 1 The MIP probe is placed in a PVC pipe containing the standard solution Standard Operating Procedure 7 Membrane Interface Probe MIP 2 00E 05 1 90E 05 4 1 80E 05 1 70E 05 7 Trip time of Contaminate 7 45 sec 1 60E 05 1 50E 05 c gt o 5 c 9 a O x a 1 40E 05 1 30E 05 Time in Standard 45 sec 1 20E 05 1 10E 05 1 00E 05 Time s Figure 4 2 SRI PID Response Test 10 ppm Benzene 5 0 Field Operation 1 Power on the generator 2 Turn on any gases that will be used for the MIP system i e nitrogen carrier gas hydrogen for the FID etc Check the flow rate of the system and psi on the mass flow controller Compare these numbers to previous work 3 Power on the detector or dete
6. if not corrected quickly Regulated Out This fitting is the outlet for the pressure and flow regulated output from the MP6500 controller This fitting is normally equipped with a 1 16 in Swagelok brand fitting for attachment to one of the Teflon tubes in the MIP trunkline The MIP trunkline has a 1 8 in brass tube like bulkhead fitting for this connection Nitrogen Source This is the input port for carrier gas to the MIP system This label is somewhat of a misnomer as any one of a number of carrier gasses may be connected to this port This is a 1 8 in Swagelok fitting Clean carrier gas should be supplied to this port at a regulated pressure of 30 to 60 psi 2 to 4 bars through a 1 8 in brass tube like bulkhead fitting 2 10 Section 3 0 MP6500 MIP Controller Connections Section 3 1 Introduction This section explains making connections to a basic field operation of the MP6500 MIP controller The first operation task is to make the various gas and electrical connections to the back panel of the controller With this complete the MP6500 is turned on the probe heated a response test ran and logging operations started Section 3 2 Attachment of Gas Supply Connect a carrier gas supply to the input port labeled Nitrogen Source on the rear panel of the MP6500 controller This input port is a 1 8 in Swagelok fitting One eighth inch 3 175 mm OD tubing of either stainless steel or Teflon should be used from the car
7. measure the trip time Trip time is the time it takes for the contaminant to go from the probe through the trunk line and to the detectors This time will need to be entered into the MIP software for depth calculations as described later in this document The following items are required to perform response testing e Neat sample of the analyte of interest i e benzene TCE PCE etc purchased from chemical vendor Microliter syringes e 25 or 50 mL Graduated cylinder e Several 40 mL VOC vials with labels Testing cylinder made from a nominal 2 in PVC pipe with a length of 24 in 0 5 L plastic beaker or pitcher 25 mL Methanol Supply of fresh water 0 5 L needed per test e 5 gallon bucket filled with fine sand and water Stopwatch Preparation of the stock standard is critical to the final outcome of the concentration to be placed into the testing cylinder 1 2 Pour methanol into graduated cylinder to the 25 mL mark Pour 25 mL of methanol from graduated cylinder into 40 mL VOC vial Mix appropriate volume of desired neat analyte into 40 mL VOC vial containing 25 mL of methanol The required volume of neat analyte for five common compounds is listed in Column 3 of Table 4 1 Use the equation at the then of this section to calculate the appropriate neat analyte volume for other compounds of interest Label the vial with name of standard i e TCE PCE Benzene concentration 50 mg mL date created and
8. the following main components e Isolation transformer to condition the 110 VAC for MIP probe heating e Gas flow regulation systems to provide a constant carrier gas flow to the probe e Temperature measurement and control system to regulate MIP probe temperature e Analog to digital conversion system to output digital data via serial cable to a Geoprobe FC4000 Field Instrument There are two separate models of the MP6500 MIP controller available differing only in their input voltages The two models and their respective input voltages are shown in Table 2 1 Both models are 50 60Hz compatible Table 2 1 Available MP6500 Controller models Model Area of Use Input Voltages MP6500 U S and Canada 110 VAC nominal MP6503 International 230 VAC nominal The MP6500 is an electrical device which controls the gas flow to and the temperature of the MIP probe The MIP system also measures soil electrical conductivity via the dipole electrode on the probe The conductivity feature is controlled and monitored by the FC4000 field instrument directly The MP6500 controller has inputs for analog signal differential inputs 5VDC or less from gas phase chemical detectors that are used in conjunction with the MIP system 2 1 Trunkline pressure and probe temperature are electronically monitored inside the MP6500 controller All MIP data is collected displayed and logged by the FC4000 field instrument Section 2 2 Mechanical Proper mounti
9. 20 220 230 240 VAC 2 a THERMOCOUPLER DICTATES WHEN THE RELAY TURNS ON OFF RELAY ON WHEN TEMP CONTROLLER BOARDS READS lt 121 C THERMOCOUPLER IS CONNECTED PROPERLY TO THE PROBE A 1 APPENDIX B Geoprobe Membrane Interface Probe MIP Standard Operating Procedure B 1 GEOPROBE MEMBRANE INTERFACE PROBE MIP STANDARD OPERATING PROCEDURE Technical Bulletin No MK3010 PREPARED May 2003 Gas Chromatograph GC FC4000 Field Instrument MP3500 MIP Controller Probe Rods in Optional MIP Rod Rack 2 5 MIP Probe THE MIP SYSTEM MAY BE DEDICATED TO A SINGLE CARRIER VEHICLE FOR USE IN TANDEM WITH MULTIPLE GEOPROBE DIRECT PUSH MACHINE MODELS Geoprobe Systems A DIVISION OF KEJR INC Geoprobe Systems Geoprobe and Geoprobe Systems Macro Core and Direct Image are Registered Trademarks of Kejr Inc Salina Kansas Equipment and tool specifications including weights dimensions materials and operating specifications included in this brochure are subject to change without notice Where specifications are critical to your application please consult Geoprobe Systems COPYRIGHT 2003 by Kejr Inc ALL RIGHTS RESERVED No part of this publication may be reproduced or transmitted
10. Geoprobe Direct Image MP6500 Membrane Interface Probe MIP Controller User Manual Document No MK3083 Revision 1 00 10 12 2004 Geoprobe and Geoprobe Systems Macro Core and Direct Image are Registered Trademarks of Kejr Inc Salina Kansas COPYRIGHT 2004 by Kejr Inc ALL RIGHTS RESERVED No part of this publication may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopy recording or any information storage and retrieval system without written permission from Kejr Inc Equipment and tool specifications including weights dimensions and operating specifications listed in this publication are subject to change without notice Where specifications are critical to your application please consult Geoprobe Systems at 1 800 GEOPROBE 436 7762 Section 1 0 General Information Section 1 1 Introduction The purpose of this manual is to address aspects of Direct Image safety hardware and general system setup as it pertains to the MP6500 Membrane Interface Probe MIP controller This manual is not intended to be a complete field manual for Direct Image equipment but rather a tool to assist the user in general Direct Image practices This manual assumes the reader has completed the Geoprobe Systems MIP training and is familiar with good MIP logging practices The reader is encouraged to read and follow the practices outlined in the MIP SOP in Appendix
11. P6500 with the top cover off Work on a static mat or use a static discharge wristband whenever possible 2 3 Section 2 4 MP6500 Front Panel The front panel of the MP6500 is shown in Figure 2 The front panel is divided into the following sections Right Section System power probe heater control and indication Left Section Probe gas flow regulation e HEATER SWITCH INJECTOR HEATER FLOW CONTROLLER MIP Controller MP6500 Series Figure 2 MP6500 Front Panel Power The power pilot light will indicate when the MP6500 has been connected to the line power and the power switch on the rear panel of the instrument has been turned on This indicator does not report the status of the probe heater circuit Probe Heater and Temperature Controls The right hand side of the front panel contains the MIP probe heater controls Again refer to Figure 2 Heater Pilot Light The heater pilot light is on when the MP6500 closes the probe heater relay and power is being supplied to the rear panel probe heater connector This pilot light does not indicate that the probe is connected to or receiving current from the controller The set point for the probe temperature is pre set at the factory to 121 C The MP6500 controller uses an on off control scheme for temperature control The heater will be on until the probe reaches the set point then it shuts off With the heater off the temperature will momentarily continue to rise and then b
12. ble 2 3 A spare fuse is provided within the power connection block Table 2 1 Input Power Fuse Size Model Input Voltages Fuse Size MP6500 110 VAC nominal 10 Amp MP6503 230 VAC nominal 6 3 Amp GFI The purpose of this switch is to detect any current leakage to ground that may occur from the probe and automatically disconnect from power if such leakage occurs To test the operation of the GFI push the test button This will cut the power to the probe heater circuit only and not the rest of the MP6500 controller Pressing the reset button will restore power to the heater circuit A green indicator light on the GFI switch indicates that the power is on See Appendix A for a schematic of the MP6500 probe heater circuit Data Port This port accepts a standard DB 9 male connector and is used to transfer digital data from the MP6500 internal analog to digital A D converter in the controller to the FC4000 Field Instrument Data transferred via this port includes probe temperature detector responses and trunkline carrier gas pressure Heater Circuit Breaker This is a safety circuit breaker on the secondary side of the probe heater transformer This breaker pops out when the breaker has tripped Simply press the button to reset the breaker If the breaker continues to reset a problem exists in the trunkline or probe portions of the heater circuit and must be addressed before resetting the breaker Do not attempt to hold the breake
13. check the installation for leaks using soap bubbles 2 7 Section 2 5 Rear Panel The layout of the MP6500 rear panel is shown in Figure 4 The rear panel is used for connection to line power trunkline connections detector connections and carrier gas connections DETECTOR 1 DETECTOR 2 NITROGEN SOURCE GFI 240VAC PUSH TO SET MIP Controller MP6500 Series Manufactured by l Geoprobe Systems Serial r O 607 Barney Salina KS 1 800 436 7762 785 825 1842 CO Model MP6503 www geoprobe com INSTRUMENT INTERFACE Figure 4 MP6500 Rear Panel Power The line voltage required for the MP6500 controller is clearly shown on this label Do not attempt to connect the MP6500 to line voltages other than the voltage indicated on this label Use of improper input line voltage could result in damage to the equipment Unit Power Connection Connect only to voltage indicated on the input power label MP6500 series MIP controllers vary in their input power requirements depending upon the indicated country of service Input voltage requirements for the various models within the MP6500 series are shown in Table 2 2 Table 2 2 Available MP6500 Controller models Model Area of Use Input Voltages MP6500 U S and Canada 110 VAC nominal MP6503 International 230 VAC nominal 2 8 Fuse Holder Power to the controller is fused at the input point Fuse size varies with the designated input voltage as shown in Ta
14. ctors and allow to warm up to set temperature approximately 30 minutes 4 Power on the MP2500 or MP3500 MIP Controller 5 Power on the computer or the FC4000 Field Instrument 6 Advance a pre probe 3 to 4 feet into the subsurface at the location to be logged 7 Remove the pre probe and raise the probe foot of the direct push machine 8 If advancing the MIP with percussion raise the probe foot enough to slide the rod wiper plate underneath 9 If pushing only turn the desired amount of anchors into the subsurface and return the probe foot to the position from which the pre probe was advanced Leave the probe foot raised sufficiently to allow sliding the rod wiper underneath 10 Place the rod wiper plate under the foot such that the opening is directly over the pre probed hole Lower the foot firmly onto the rod wiper Standard Operating Procedure 8 Membrane Interface Probe MIP 11 12 13 14 15 16 NOTE 17 NOTE 18 19 NOTE 20 21 22 23 24 If pushing only position the anchoring bridge over the foot of the machine such that the anchors extend through the holes in the bridge fig 5 1 Install a chain vise at each anchor to secure the bridge With the software loaded run a response test Section 4 0 and record the height of the peak response and the trip time into a field notebook Refer to Figure 4 2 If the trip time is different than what was placed into the sof
15. e Head Probe Rod 1 25 in x 48 in Model 54LT Direct Push Machine Description Stringpot Mounting Bracket Stringpot Bottom Clamp Stringpot Piston Weight Slotted Drive Cap for 1 25 in rods Slotted Pull Cap for 1 25 in rods MIP Drive Adapter for 1 25 in rods MIP Drive Head Probe Rod 1 25 in x 48 in Model 5410 Direct Push Machine Description Stringpot Piston Weight Slotted Drive Cap for 1 25 in rods Slotted Pull Cap for 1 25 in rods MIP Drive Adapter for 1 25 in rods MIP Drive Head Probe Rod 1 25 in x 48 in Part Number SC110 SC111 SC112 AT1202 AT1203 MP2512 GW1516 AT1248 Part Number 11433 SC111 SC112 AT1202 AT1203 MP2512 GW1516 AT1248 Part Number SC112 AT1202 AT1203 MP2512 GW1516 AT1248 Model 6600 66DT and 6610DT Direct Push Machines Description Stringpot Mounting Bracket Stringpot Bottom Clamp Stringpot Piston Weight Slotted Drive Cap for 1 5 in rods Slotted Pull Cap for 1 5 in rods Drive Cap Adapter for GH60 and 1 25 in rods MIP Drive Adapter for 1 5 in rods MIP Friction Reducer Probe Rod 1 5 in x 48 in Standard Operating Procedure 11 Part Number 16971 11751 SC112 15607 15164 15498 18563 18564 13359 Membrane Interface Probe MIP Geoprobe Systems A DIVISION OF KEJR INC Corporate Offices 601 N Broadway Salina KS 67401 1 800 436 7762 Fax 785 825 2097 www geoprobe com
16. easing pressure in order to maintain flow A decrease in pressure at the mass flow controller indicates that a leak has occurred in the system In general the mass flow controller pressure gauge will not change by more than one psi 0 068 bar during MIP logging If it does change by more than one psi there is a problem in the system Logging should be halted the probe removed and the system should be examined If the mass flow controller pressure rises to match the primary pressure then it is safe to assume that the system has a complete blockage and must be examined and corrected 2 6 The MP6500 coniroller has an internal electronic pressure sensor that monitors the probe side trunkline pressure The pressure data is sent to the FC4000 field instrument and displayed as a digital readout on the Real Time detector graph within the FC4000 MIP software Pressure data is also saved while logging to the DAT file on a 0 05ft 0 015 meter increment Injection Port This is a septum type injection port which is placed in the carrier gas line before it leaves the control box Gas phase standards can be injected in this port using needle syringes A standard injected in this port would travel in the carrier gas stream to the MIP probe and back to the detector It is important that the injection port nut not be tightened too tight as this will damage the septum and block carrier gas flow When replacing the nut simply screw it on finger tight and
17. ecome lodged in the gas openings in the plug 5 Remove and discard the copper washer as shown in Figure 6 2 Each new membrane is accompanied by a new copper washer Do not reuse the copper washer 6 Inspect the open cavity for any foreign objects Remove any objects present and clean the inside of cavity of any soil that was deposited on the wall of the block 7 Insert the new copper washer around the brass plug making sure that it sits flat on the surface of the block 8 Install the new membrane by threading it into the socket Use the membrane wrench to tighten the membrane to a snug fit Do not overtighten 9 Turn the gas on and leave the heater off Apply water to the membrane and surrounding area to check for leaks If a leak is detected bubbles are formed in the water use the membrane wrench to further tighten the membrane 10 Use 8 flow meter bubble flow meter to check flow to the detectors Record this value in a field notebook Figure 6 1 Figure 6 2 Unthread the membrane from the probe block Remove and discard the copper washer Standard Operating Procedure 10 Membrane Interface Probe MIP Appendix I Tools for Various Direct Push Machines Model 5400 and 54DT Direct Push Machines Description Stringpot Mounting Bracket Stringpot Bottom Clamp Stringpot Piston Weight Slotted Drive Cap for 1 25 in rods Slotted Pull Cap for 1 25 in rods MIP Drive Adapter for 1 25 in rods MIP Driv
18. egin to fall When the temperature falls to less than the set point the MP6500 again provides power to the probe heater to continue heating the probe 2 4 Heater ON OFF Switch The heater ON OFF switch is on when in the UP position and off when in the DOWN position The intent of this switch is to be used as the main ON OFF conitrol for the probe heater This switch is NOT the heater circuit breaker Temperature Controller This modular controller displays two temperatures The top display is the actual temperature of the probe displayed in C the bottom display is the temperature set point in C The set point is pre set at the factory to 121 C and should not be adjusted This modular control is a proportional type controller and provides close tolerance regulation of the probe temperature If the thermocouple goes open the temperature controller will display a flashing error message r5t op5n and the MP6500 will not allow current flow to the probe heater The temperature controller also outputs a proportional analog signal that is sent to the FC4000 field instrument for logging Gas Flow Controls These controls are located on the left side of the front panel Gas flow controls and their functions are as follows Primary Pressure Regulator Carrier gas connected to the MP6500 first passes through the primary regulator The purpose of this regulator is the supply of gas at a constant pressure to the mass flow controller Besides being
19. eres A GFCI is simply a fast acting circuit breaker that senses small imbalances in the circuit caused by current leakage to ground In a fraction of a second the GFCI trips and interrupts the current flow to the MIP probe This device protects the operator against the most common shock hazard the ground fault 2 2 The MP6500 controller supplies a nominal 110VAC 5 5 Amperes power to the MIP probe This level of power is required for the correct operation of the MP6510 series MIP probes Power supplies of this magnitude pose a clear and present danger to the operator if not treated with respect Warning labels and the previously discussed electrical safety devices are provided on the instrument to keep the operator aware of and reasonably protected from the dangers Caution and respect for the MIP probe power circuit is a must when using the MP6500 Do not disassemble or modify the MP6500 instrument Use the MP6500 for the purpose for which it is intended For repairs contact the Technical Service staff at Geoprobe Systems Never remove the top cover of the MP6500 instrument case with the power ON Be aware of the 110VAC supply voltage on the heater output Never have power ON when connecting to the 110VAC output Be aware of the weight of the instrument before lifting Be aware of the weight distribution inside the instrument to avoid mishandling or dropping Be aware of static discharge when troubleshooting or working on the M
20. etween contaminates in the soil and the detectors at ground surface It is a screening tool used to find the depth at which the contamination is located but is not used to determine concentration of the compound Two advantages of using the MIP are that it detects contamination in situ and can be used in all types of soil conditions Refer to Figure 2 1 The MIP is a logging tool used to make continuous measurements of VOCs Carrier Gas Supply Gas Return Tube in soil Volatile compounds outside the probe from MIP controller to detector diffuse across a membrane and are swept from the probe to a gas phase detector at ground surface A log is made of detector response with probe depth In order to speed diffusion the probe membrane is heated to approximately 100 C 212 F Permeabl Membrane Along with the detection of VOCs in the soil the MIP also measures the electrical conductivity of the soil to give a probable lithology of the subsurface This is accomplished by using a dipole measurement arrangement at the end of the MIP probe so that both conductivity and detector readings may be taken simultaneously A simultaneous log of soil conductivity is recorded with the detector response Volatile Organic Contaminants in Soil 2 Soil Conductivity Measurement Tip Figure 2 1 Schematic drawing of the MIP probe Standard Operating Procedure 3 Membrane Interface Probe MIP 3 0 Tools and Equip
21. he scope of this manual Usually this connection is made by inserting a megabore size 0 53 mm OD Silcosteel stainless steel tube into the detector and then inserting this tube in the bore of the gas line of the trunkline A standard 1 16 in size Swagelok connector is then used to compress the gas line into the stainless steel tube This connection should of course be checked for leaks using a soap solution NOTE Do not connect the gas lines to either the MIP probe of the detectors without first purging this line with carrier gas flow from the MP6500 Failure to do so may introduce particulates into the MIP probe and or detectors 3 2 Power Supply A cord is provided with the MP6500 for attachment to the electrical supply The input voltage for the MP6500 is clearly marked on the back panel of the controller Do not attempt to connect the MP6500 controller to any voltage other than the input voltage prescribed on the back panel of the controller Connection to a line voltage other than described on the back panel can result in damage to the controller and the probe as well as possible injury to the operator Detector Inputs Analog outputs in the 0 5VDC range can be connected to the rear panel of the MP6500 controller Attach the positive and negative leads from the detector to the appropriate lugs on the rear panel connector Polarity is marked next to the lug and care should be exercised to follow these markings Data Po
22. in any form or by any means electronic or mechanical including photocopy recording or any information storage and retrieval system without written permission from Kejr Inc Standard Operating Procedure 2 Membrane Interface Probe MIP 1 0 OBJECTIVE This document serves as the standard operating procedure for use of the Geoprobe Systems Membrane Interface Probe MIP to detect volatile organic compounds VOCs at depth in the subsurface 2 1 2 2 2 0 BACKGROUND Definitions Geoprobe A brand name of high quality hydraulically powered machines that utilize both static force and percussion to advance sampling and logging tools into the subsurface The Geoprobe brand name refers to both machines and tools manufactured by Geoprobe Systems Salina Kansas Geoprobe tools are used to perform soil core and soil gas sampling groundwater sampling and testing soil conductivity and contaminant logging grouting and materials injection Geoprobe is a registered trademark of Kejr Inc Salina Kansas Membrane Interface Probe MIP A system manufactured by Geoprobe Systems for the detection and measurement of volatile organic compounds VOCs in the subsurface A heated probe carrying a permeable membrane is advanced to depth in the soil VOCs in the subsurface cross the membrane enter into a carrier gas stream and are swept to gas phase detectors at ground surface for measurement Discussion The MIP is an interface b
23. ment The following equipment is needed to perform and record an MIP log Basic MIP system components are listed in this section and illustrated in Figure 3 1 Refer also to Appendix I for more required tools as determined by your specific model of Geoprobe direct push machine 3 1 Basic MIP System Components Description Field Instrument MIP Controller MIP EC Acquisition Software MIP Probe Replacement Membrane Membrane Wrench LB Sample Tube Stringpot linear position transducer Stringpot Cordset MIP O ring and Service Kit MIP Trunkline 100 ft 30 m length Extension Cord 25 ft 8 m length Needle Valve 24 in Nafion Dryer Tube 3 2 Anchoring Equipment Description Soil Anchor 4 0 in OD flight Anchor Foot Bridge Anchor Plate GH60 Hex Adapter if applicable Chain Vise 3 3 Optional Accessories Description MIP Trunkline 150 ft 46 m length MIP Trunkline 200 ft 61 m length FID Compressed Air System Hydrogen Gas Regulator Nitrogen Gas Regulator Cable Rod Rack for 48 in rods Rod Cart Assembly for 1 25 in OD rods Rod Cart Hitch Rack for SC610 Rod Cart Carrier for SC610 Rod Wiper for 5400 Series foot Rod Wiper for 66 Series foot Rod Grip Pull Handle for GH40 hammer Rod Grip Pull Handle for GH60 hammer Water Transport System Standard Operating Procedure Quantity 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Quantity 3 1 3 1 3 Quantity
24. ng of the MP6500 controller is essential for reliable and successful use of the MIP system Dimensions and weight of the MP6500 controller Depth 15 in 381 mm Additional 1 5 in 38 mm front panel clearance required Additional 3 0 in 127 mm rear panel clearance required Width 15 in 381 mm Additional 1 in 25 mm clearance recommended Height 7 75 in 197 mm Additional 4 0 in 102 mm clearance recommended Weight 41 05 Ib 14 0 kb does not include shipping case Section 2 3 Safety Precautions Operator safety is essential when adjusting testing or handling the MP6500 controller Although measures have been taken to protect and guard against operator injury care should be used whenever working with the MP6500 controller This section describes some of the electrical guarding and protection devices that are used as well as lists some safety precautions CAUTION NEVER override the circuit breaker NOTE This device is intended to trip or interrupt current flow when the circuit is overloaded or a short circuit has occurred on the output device MIP probe This device will protect the user and equipment from line to line contact hazards CAUTION NEVER override the GFCI Ground Fault Circuit Interrupter NOTE The GFCI is an industry accepted device that provides protection for personnel and equipment when electrical leakage levels have a potentially dangerous ground current in excess of six milli amp
25. r on doing so will damage the breaker as well as portions of the probe heater circuit Detector Inputs The MP6500 MIP controller is designed to accept analog inputs from up to four gas phase detectors These inputs accept signals in the range of O 5VDC This range is sufficient to work with most all detectors common to the market Polarity is marked at each input The MP6500 uses an internal analog to digital A D converter to convert the detector signals to digital data sent to the FC4000 Field Instrument Conductivity Connector The dipole soil conductivity wires one white and one red from the MIP trunkline are connected to the bottom two lugs of the connector Note that the red and white wires are interchangeable in these two lugs There is a0 75 VAC potential present between these lugs during logging 2 9 Heater Connector The trunkline probe heater wires yellow are connected to this connector The potential between these wires is 110 VAC and care should be exercised when working with this connector Thermocouple Connection This is a standard type K thermocouple connection that accepts the male connector attached to the end of the thermocouple wire in the MIP trunkline When assembling the male thermocouple connector to the trunkline note that the red wire goes in the negative pole and yellow to positive Reversing these connections will result in the temperature reading to go down as the probe heats and will result in probe damage
26. rier gas supply to the input port The choice of carrier gas used will depend upon the detector connected to the system Selection of the proper carrier gas is the responsibility of the user and should be based on the requirements of the detector being connected to the system The following carrier gasses have been used for MIP work Nitrogen most common Clean air used with FID Helium Argon The carrier gas should be supplied to the Nitrogen Source port at a regulated pressure of 30 to 60 psi 200 to 400 kPa Turn the pressure regulator control knob on the MP6500 front panel to the off position before applying gas pressure to the controller Apply gas pressure to the MP6500 and check for leaks at this connection using a soap solution Section 3 3 Trunkline Connections The trunkline should be connected to the MP6500 controller in the following manner Regulated Out Gas Line One of the 1 16 in 1 6 mm OD Teflon tubes from the trunkline should be connected to the Regulated Out port on the back of the MP6500 controller A Swagelok type 1 16 in fitting is provided for this purpose The tubing should be inserted into the connection and tightened with a wrench approximately one quarter turn When pressure is applied to the trunkline this fitting should be checked and if necessary re tightened to stop leakage 3 1 Conductivity Connector The dipole soil conductivity wires one white and one red from the MIP tr
27. rt Connection Attach the 9 pin serial communications cable provided to the Data Port connection on the rear of the MP6500 The opposite end of this cable connects to the FC4000 Field Instrument Section 3 4 MP6500 Power up The following steps need to be followed when powering up the MP6500 controller 1 Open the valve at the carrier gas supply Make sure that the pressure is adjusted to between 30 and 60 psi 200 to 400 kPa 2 Open the primary regulator on the MP6500 front panel making sure that the pressure at this regulator is set to 20 psi 100 kPa 3 Turn off the heater switch on the front of the MP6500 controller 4 Turn on the power switch on the MP6500 back panel Under the above conditions the system power pilot light on the front panel should be lit If no probe thermocouple connection is made to the rear panel an error message will be shown on the temperature controller on the front of the MP6500 Once the appropriate probe connections are made the probe temperature will be shown on the temperature controller At this time turning on the front panel heater switch will cause the MP6500 to begin heating the MP6510 series probe 3 3 Appendix A MP6500 Probe Heater Control Schematic PANEL INPUT MODULE AMP BREAKER MP6500 ELECTRONICS TRANSFORMER 1S0 750VA 50 60 Hz MULTIPLE TAP PRIMARY CASE _ TIOVACSECONDARY r SOLID STATE RELAY BREAKER BLK 100VAC HEATER 220HM 100 1
28. slotted pull cap When the MIP reaches the surface clean the face with water and run a response test This response test should be written down in the field notes and compared to the initial test This system check ensures the data for that log is valid Save the data to a 3 5 inch floppy disk and exit the MIP software Data from the MIP can now be graphed with Direct Image MIP Display Log or imported into any spreadsheet for graphing Standard Operating Procedure 9 Membrane Interface Probe MIP 6 0 Replacing a Membrane on the MIP Probe A probe membrane is considered in good working condition as long as two requirements are met 1 The butane sanity test result is greater than 1 0E 06 uV response 2 Flow of the system has not varied more than 3 mL min from the original flow of the system a flow meter or bubble flow meter should be kept with the system at all times If either one of these requirements are not met a new face must be installed as follows 1 Turn the heater off and allow the block to cool to less than 50 C on the control panel readout 2 Clean the entire heating block with water and a clean rag to remove any debris 3 Dry the block completely before proceeding 4 Remove the membrane using the membrane wrench Fig 6 1 Keep the wrench parallel to the probe while removing the membrane to ensure proper engagement with socket head cap screw NOTE Do Not leave the membrane cavity open for extended periods Debris can b
29. tware restart the software and enter the correct trip time Attach a slotted drive cap to the MIP drive head Insert the MIP point into rod wiper opening and drive it into the soil until the membrane of the probe is at ground level Figure 5 1 Anchor the probe foot to allow advancement of MIP probe by push only no percussion Connect the stringpot cable to the stringpot weight located on the probe foot and pull keeper pin so the weight drops to the ground Do not allow the stringpot cable to retract into the stringpot housing at a high rate This will ultimately damage the stringpot Record the system parameters in a field notebook at this time 1 6 mass flow trip time If the mass flow reading drops or rises more than one psi turn off the flow at the primary controller and remove the probe from the ground If the temperature monitor quits heating or gives an error remove the probe from the ground Place the trigger switch in the ON position Advance the probe at a rate of ft min to the predetermined log depth or until refusal is attained Refusal is attained when it takes longer than 1 5 minutes of continuous hammering to advance the probe one foot This is the maximum time to reach one foot of probe travel When the MIP log is complete turn the trigger off and slowly return the stringpot cable into the stringpot housing Pull the probe rod string using either the Geoprobe rod grip pull system or a
30. unkline are connected to the bottom two lugs of the connector Note that the red and white wires are interchangeable in these two lugs There is a 0 750 VAC potential present between these lugs during logging Instrument Interface This connection is made with the cable that is loomed with the data serial cable The other end of this cable is connected to the PROBE connector on the FC4000 The purpose of this interface is to transfer the electrical conductivity voltage 0 750VAC nominal from the FC4000 field instrument to the MP6500 controller for routing to the MIP trunkline Heater Connector The trunkline probe heater wires yellow are connected to this connector The potential between these wires is 110 VAC and care should be exercised when working with this connector Thermocouple Connection This is a standard type K thermocouple connection that accepts the male connector attached to the end of the thermocouple wire in the MIP trunkline When assembling the male thermocouple connector to the trunkline note that the red wire goes in the negative pole and yellow to positive Reversing these connections will result in the temperature reading to go down as the probe heats and will result in probe damage if not corrected quickly Trunkline to Detector The second gas line in the trunkline must be connected to the detector The manner of attachment of this tube to the detector is dependent upon the detector configuration and is outside t
31. will decrease carrier gas flow The numerical counter on the controller is a unitless indicator of controller position only The pressure gauge immediately above the mass flow controller indicates the gas pressure on the downstream probe side of the mass flow controller The mass flow controller is normally set so that the output pressure will be between 7 and 10 psi 0 47 to 0 68 bar for a normal clean 100 ft 30 M trunkline and probe Mass flow controller settings in this range will yield carrier gas flow rates of 25 to 40 mL min and result in butane FID detector return time of 20 to 50 seconds A graph of typical gas flow rates mass flow controller pressures and butane trip times is show in Figure 3 Pressure vs Flow and Return Time Geoprobe MIP system N wo a 1 1 T 22 o e i T A Gas Flow N2 ml min a T f d 1 o Butane trip time sec N o T a o a 1 T 1 N o o ji 1 o a 9 gt o 9 Pressure at Mass Flow Controller psi Data 12 98 tmc FIGURE 3 Trunkline Pressure vs Flow and Return Time The mass flow controller gauge is very important during field operations and should be checked at least once per rod An increase in this pressure indicates that some downstream blockage has occurred particulate or water in the line and the mass flow controller is incr
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