Analytical Technology
Portable Gas Detectors
PortaSens II Model C16 Operating and Maintenance Manual Rev F Oct 2003
Operating and Maintenance Manual
37 Pages
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PortaSens II Gas Leak Detector
Home Office Analytical Technology, Inc. 6 Iron Bridge Drive Collegeville, PA 19426 Ph:(800) 959-0299 (610) 917-0991 Fax: (610) 917-0992 Email: [email protected]
European Office ATI (UK) Limited Bank Chambers, 33 Stamford St. Mossley, Ashton-u-Lyne OL50LL Ph: 0800-018-4020 + 44 (0) 1457 832800 Fax:+ 44 (0) 1457 839500 Email:[email protected]
PRODUCT WARRANTY Analytical Technology, Inc. (Manufacturer) warrants to the Customer that if any part(s) of the Manufacturer's products proves to be defective in materials or workmanship within the earlier of 18 months of the date of shipment or 12 months of the date of start-up, such defective parts will be repaired or replaced free of charge. Inspection and repairs to products thought to be defective within the warranty period will be completed at the Manufacturer's facilities in Collegeville, PA. Products on which warranty repairs are required shall be shipped freight prepaid to the Manufacturer. The product(s) will be returned freight prepaid and allowed if it is determined by the manufacturer that the part(s) failed due to defective materials or workmanship. This warranty does not cover consumable items, batteries, or wear items subject to periodic replacement including lamps and fuses. Gas sensors, except oxygen sensors, are covered by this warranty, but are subject to inspection for evidence of extended exposure to excessive gas concentrations. Should inspection indicate that sensors have been expended rather than failed prematurely, the warranty shall not apply. The Manufacturer assumes no liability for consequential damages of any kind, and the buyer by acceptance of this equipment will assume all liability for the consequences of its use or misuse by the Customer, his employees, or others. A defect within the meaning of this warranty is any part of any piece of a Manufacturer's product which shall, when such part is capable of being renewed, repaired, or replaced, operate to condemn such piece of equipment. This warranty is in lieu of all other warranties (including without limiting the generality of the foregoing warranties of merchantability and fitness for a particular purpose), guarantees, obligations or liabilities expressed or implied by the Manufacturer or its representatives and by statute or rule of law. This warranty is void if the Manufacturer's product(s) has been subject to misuse or abuse, or has not been operated or stored in accordance with instructions or if the serial number has been removed. Analytical Technology, Inc. makes no other warranty expressed or implied except as stated above.
PortaSens II Gas Detector
C16 Leak Detector
TABLE OF CONTENTS SPECIFICATIONS... 3 INTRODUCTION... 4 UNPACKING... 6 FIGURE 1 – FRONT PANEL OVERVIEW (ATI-0401)... 6 OPERATION ... 7 SENSOR / CHARGE LED ... 7 FIGURE 2 - MAIN DETECTOR DISPLAY ... 7 RESPONSE TEST ... 8 SAMPLE INLET OPTIONS... 9 DISPLAY RESOLUTION... 9 RESPONSE TIME... 10 INTERFERENCES... 11 GAS CONCENTRATION ALARM FUNCTIONS... 13 PUMP TROUBLE ALARM... 13 BATTERY POWER SUPPLY ... 14 RS-232 COMPUTER INTERFACE... 14 FIGURE 3– CHARGER JACK / COMM PORT ORIENTATION (ATI-0402)... 15 START-UP SEQUENCE... 16 OPERATING MODES... 17 SENSOR MODULE EXCHANGE... 18 FIGURE 4 – MANIFOLD ASSEMBLY EXPLODED VIEW (ATI-0403)... 19 PROGRAMMING ... 20 ADJUSTING ALARM SETPOINTS... 21 SETTING DISPLAY VARIABLES ... 22 SETTING SAMPLE MODE VARIABLES... 24 CALIBRATION... 25 ZERO ADJUSTMENT... 25 FIGURE 5 - CALIBRATION FLOW SCHEMATIC... 26 DATA LOGGING... 27 DATA LOGGER SOFTWARE... 28 INSTALLING SOFTWARE ... 28 LOGGING PERIODS ... 28 STARTING THE DATA LOG PROGRAM ... 29 FIGURE 6 - CONFIGURE TAB IN DATALOG SOFTWARE... 29 FIGURE 7 - DOWNLOAD TAB IN DATALOG SOFTWARE ... 31 DISPLAY AND GRAPH OF DATA ... 31 MAINTENANCE... 32 TROUBLESHOOTING ... 33 TROUBLESHOOTING (CONT’D )... 34 SPARE PARTS LIST... 35
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PortaSens II Gas Detector
C16 Leak Detector
SPECIFICATIONS Range:
Dependent on sensor module used
Display:
Back-lit graphics liquid crystal display
Accuracy:
Sensor dependent but generally ± 5% of value (limited by cal. gas)
Sensitivity:
1% of sensor module range
Repeatability:
± 1% of sensor module range
Outputs:
RS-232 output of stored gas values 0-1 VDC analog (requires optional output cable)
Memory:
12,000 data points
Storage Interval:
Programmable for 1, 5, 10, and 15 minute intervals
Typical Capacity:
8 Days at 1 minute storage interval.
Alarms:
Three concentration alarms with adjustable setpoints. Alarms may be set for high, low, or off. Low flow and low battery alarms Alarms displayed on LCD and indicated by audible beeper
Power:
D cell battery, alkaline recommended, 75 hours operation Internal rechargeable battery for backup power, 6 hours operation 115 or 220 VAC chargers available
Operating Temp.:
-25º to +55º C
Humidity:
0-95% Non-condensing
Detector Material:
Glass filled nylon, PVC, and stainless steel
Accessories:
10” Sampling wand, Teflon lined Battery charger Three spare filters & Outlet Tube Barbed Fitting Flowmeter RS-232 Output cable (DB9 connector) DataLog PC software on CD ROM Storage case Calibration “T”
Shipping Weight:
3 lbs. (1.4 Kg.)
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INTRODUCTION The Series C16 PortaSens II is a portable, battery operated instrument designed to measure a variety of gases in ambient air. While C16 detectors can only measure one gas at a time, the unit uses interchangeable smart sensors so that it can be quickly converted to measure another gas. The table below shows the currently available sensor modules and the measurement ranges that can be covered by each module. Note that the C16 detector range can be adjusted by the user for any full scale range between the minimum range and maximum range indicated for each module. For example, with an ammonia module #00-1010 inserted into the unit, the range can be set at anywhere between 0-50 PPM and 0-500 PPM.
OXIDANT GASES GAS
SENSOR NO.
MIN. RANGE
MAX. RANGE
RESOLUTION
Bromine
00-1000 00-1001 00-1002 00-1003 00-1004 00-1005 00-1006 00-1007 00-1042 00-1036 00-1037 00-1008 00-1009
0-1 PPM 0-5 PPM 0-1 PPM 0-5 PPM 0-1 PPM 0-5 PPM 0-1 PPM 0-5 PPM 0-10 PPM 0-1 PPM 0-5 PPM 0-1 PPM 0-5 PPM
0-5 PPM 0-100 PPM 0-5 PPM 0-100 PPM 0-5 PPM 0-100 PPM 0-5 PPM 0-100 PPM 0-100 PPM 0-5 PPM 0-100 PPM 0-5 PPM 0-100 PPM
0.01 PPM 0.1 PPM 0.01 PPM 0.1 PPM 0.01 PPM 0.1 PPM 0.01 PPM 0.1 PPM 0.1 PPM 0.01 PPM 0.1 PPM 0.01 PPM 0.1 PPM
0-500 PPM 0-2000 PPM 0-1000 PPM 0-2000 PPM 0-10% 0-25% 0-500 PPM 0-5 PPM 0-100 PPM
1 PPM 1 PPM 1 PPM 1 PPM 0.01% 0.1% 1 PPM 0.01 PPM 0.1 PPM
0-200 PPM 0-200 PPM 0-200 PPM 0-200 PPM 0-200 PPM 0-500 PPM 0-200 PPM
0.1 PPM 0.1 PPM 0.1 PPM 0.1 PPM 0.1 PPM 0.1 PPM 0.1 PPM
Chlorine Chlorine Dioxide Fluorine Hydrogen Peroxide Iodine Ozone
GENERAL GASES Ammonia Carbon Monoxide Hydrogen Oxygen Nitric Oxide Phosgene
00-1010 00-1011 00-1012 00-1041 00-1013 00-1014 00-1021 00-1015 00-1016
0-50 PPM 0-500 PPM 0-50 PPM 0-500 PPM 0-1% 0-5% 0-50 PPM 0-1 PPM 0-5 PPM
ACID GASES Hydrogen Chloride Hydrogen Cyanide Hydrogen Fluoride Hydrogen Sulfide Nitrogen Dioxide Sulfur Dioxide Acid Gases
00-1017 00-1018 00-1019 00-1020 00-1022 00-1023 00-1038
0-10 PPM 0-10 PPM 0-10 PPM 0-10 PPM 0-10 PPM 0-10 PPM 0-10 PPM
(List continues on next page)
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HYDRIDE GASES Arsine Diborane Germane Hydrogen Selenide Phosphine
Silane
00-1024 00-1025 00-1026 00-1027 00-1028 00-1029 00-1030 00-1031 00-1032 00-1033 00-1034 00-1035
0-500 PPB 0-10 PPM 0-500 PPB 0-10 PPM 0-500 PPB 0-10 PPM 0-500 PPB 0-10 PPM 0-500 PPB 0-10 PPM 0-200 PPM 0-10 PPM
0-2000 PPB 0-200 PPM 0-2000 PPB 0-200 PPM 0-2000 PPB 0-200 PPM 0-2000 PPB 0-200 PPM 0-2000 PPB 0-200 PPM 0-2000 PPM 0-200 PPM
1 PPB 0.1 PPM 1 PPB 0.1 PPM 1 PPB 0.1 PPM 1 PPB 0.1 PPM 1 PPB 0.1 PPM 1 PPM 0.1 PPM
HYDROCARBON GASES Ethylene Oxide Formaldehyde Alcohol Acetylene
00-1039 00-1040 00-1043 00-0144 00-1057
0-20 PPM 0-20 PPM 0-50 PPM 0-500 PPM 0-50 PPM
0-200 PPM 0-200 PPM 0-500 PPM 0-2000 PPM 0-500 PPM
0.1 PPM 0.1 PPM 1 PPM 1 PPM 1 PPM
Each Series C16 is a complete battery-operated measuring instrument containing a sample pump to draw air into the sensor manifold. A graphics liquid crystal display with back-light provides gas concentration display and alarm indication. The basic instrument is sold without a sensor module. Sensor modules must be ordered separately. Every unit comes with a sensor keeper in which the sensor module will be shipped. The Sensor Keeper will hold up to (4) sensors. If more than (4) sensors are ordered, ATI recommends that you purchase an additional sensor keeper to keep sensors on bias until ready for use. The unit is packaged in a padded plastic carrying case containing all accessories.
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PortaSens II Gas Detector
C16 Leak Detector
UNPACKING When you receive your C16 Portable Gas Detector, open the carrying case and inspect the contents to be sure that no shipping damage has occurred. The following items should be included inside the case: 1 - Series C16 PortaSens II Gas Detector (without sensor module) 1 - Battery Charger 1 - Sampling Wand 1 - Flowmeter 3 - Replacement filters 1 - Spare “D” cell battery 1 - Outlet Tube Barbed Fitting 1 - RS-232 Cable 1 - DataLog PC software CD ROM 1 –Calibration “T” 1 – Sensor Keeper (containing (1) or more sensor modules) In addition to the standard items listed above, any additional sensor modules that were ordered with the unit will be packed inside the carrying case (unless space does not allow due to the quantity ordered).
FIGURE 1 – FRONT PANEL OVERVIEW (ATI-0401) O & M Manual Rev. F, 10/03
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PortaSens II Gas Detector
C16 Leak Detector
OPERATION Sensor / Charge LED The C16 is equipped with a sensor / charge LED to give the user a visual indication that the sensor is ready for immediate use. This LED will flash about every 3 seconds. The sensor LED will flash even when the batteries in the C16 are too low to run the instrument. If the instrument will not start, replace the D-Cell and recharge the secondary battery. If the sensor / charge LED is not flashing the sensor has lost BIAS and may require several hours to stabilize. Replace the D-Cell and recharge the secondary battery. The C16 Leak Detector is shipped ready to use directly out of the box. No adjustments of any kind are necessary. Simply remove the instrument from the storage case and press and release the green button below the display. The audible horn will beep once and the internal pump will begin to pull sample into the flow manifold.
CAUTION:
For the instrument to work properly, the INLET and OUTLET ports on the back of the instrument must not be blocked or obstructed.
When power is first applied, the LCD display will scroll through a number of different start-up displays. The meaning of these displays will be explained in later sections of this manual. However, these displays will not affect the use of the instrument in making gas measurements as soon as power is turned on. Let the start-up displays cycle through until the display stops at the main display (or press the SKIP key). The unit will indicate gas concentration in large numbers, with the gas symbol and units of measure to the right of the number. Figure 2 shows how the main display will look initially.
0 PPM
P OFF
NH3 MENU SMPL
FIGURE 2 - MAIN DETECTOR DISPLAY
To use the detector immediately, remove the sampling wand from the carrying case and plug it into the mating connector on the back of the flow manifold. The internal sample pump will draw gas samples through the wand and display the concentration on the LCD. No adjustments are needed. However, you should run a response test as described on the next page, prior to using the instrument. When you have finished using the detector, press and hold the green switch (marked Off on the LCD) until the LCD indicates the message “POWER DOWN”. Release the switch and the unit will shut off.
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PortaSens II Gas Detector
C16 Leak Detector
RESPONSE TEST Prior to using the detector for field measurements, it is recommended that the unit first be tested for gas response. A response test simply means drawing a sample from some type of container that will give off the type of gas you are looking to measure. The following are examples of materials that can be used for a quick response test. Contact ATI if you have any questions about this matter.
Sensor Type
Quick Test Material
Oxidant Sensors (except H2O2) Hydrogen Peroxide Ammonia Sensor Carbon Monoxide Hydrogen Oxygen Nitric Oxide Phosgene Hydrogen Chloride Hydrogen Fluoride Hydrogen Cyanide Hydrogen Sulfide Nitrogen Dioxide Sulfur Dioxide Hydride Gases Hydrocarbon Gases
Dry calcium hypochlorite or liquid bleach Sodium bisulfite in plastic bottle Household ammonia solution Cigarette smoke No simple test. Must test with cylinder hydrogen Unit should read air levels No simple test. Must test with nitric oxide No simple test. Must test with phosgene Two drops of conc. HCl in plastic bottle Dry calcium hypochlorite or liquid bleach Sodium bisulfite in plastic bottle Sodium sulfide in plastic bottle Dry calcium hypochlorite or liquid bleach Sodium bisulfite in plastic bottle No simple test. Must test with hydride gas. Rubbing alcohol
CAUTION:
When running response check using any type of liquid solutions, do not draw liquid into the wand. Make sure that you only sample the gaseous head space over the liquid.
Many of these materials can produce fairly high gas levels in closed containers, so it is best when running a response check to approach the mouth of the bottle slowly with the tip of the sampling wand. This will reduce the possibility of a large gas exposure to the sensor. While a high exposure will do no harm, it can take quite a few minutes for some sensors to recover to zero from high level exposure. The intent of the response check is simply to insure that the sensor is responding to the intended gas.
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PortaSens II Gas Detector
C16 Leak Detector
SAMPLE INLET OPTIONS The PortaSens II is shipped with a quick disconnect inlet fitting connected to the sample inlet port. A flexible extension wand is supplied in the kit for use in probing around mechanical equipment to determine the source of a gas leak or for pulling sample from a confined area without entering the area. The extension wand plugs into the quick disconnect fitting on the flow manifold at the back of the detector. Please note that the extension wand is lined with Teflon, which is inert to most gases and vapors. It is possible to use flexible tubing on the inlet to extend the sample point even further than the wand. If this is done, it is important to use a non-reactive plastic. Fluorocarbon based tubing has proven to be the best and is the only alternative for many reactive gases when trying to measure low concentrations. Other materials may be used for high range measurements where accuracy is not a major concern, or where the user is only looking for major leakage sources. No matter what material is used for inlet extensions, the internal walls must be kept dry. Water on the walls of the inlet tubing can absorb reactive gases due to solubility. If the inside of the tubing gets wet, simply allow the unit to pump non-condensing ambient air for 10 or 15 minutes to dry it out. An outlet tube fitting is also supplied on the flow manifold. Ordinarily, allowing the small amount of sampled gas to vent at the back of the unit will do no harm. However, if sampling for high concentrations of gas, or if the instrument is being used in an enclosed space, you may wish to connect a longer vent line to the outlet so that sampled gas can be vented to a safe location.
DISPLAY RESOLUTION Model C16 detectors display gas concentration with a resolution that depends upon the range of the unit. Full scale ranges of 0-4.99 or below will provide resolution of 0.01. Ranges from 0-5.0 up to 0-49.9 will provide resolution of 0.1. Full scale ranges above 50 will have a resolution of 1.
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PortaSens II Gas Detector
C16 Leak Detector
RESPONSE TIME The response time for the gas sensors varies depending on the particular type of sensor. The following table shows the typical response times for sensor modules available for the C16 detector. The table provides typical time constants to 66% and 90% of exposure. This data should be used to determine how long you need to measure in a particular location to be sure you have a representative reading.
SENSOR TYPE Oxidant Sensors (except H2O2) Hydrogen Peroxide Ammonia Carbon Monoxide Hydrogen Oxygen Nitric Oxide Phosgene Hydrogen Chloride Hydrogen Fluoride Hydrogen Cyanide Hydrogen Sulfide Nitrogen Dioxide Sulfur Dioxide Hydride Gases Hydrocarbon Gases
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66% RESPONSE 20 seconds 40 seconds 30 seconds 10 seconds 20 seconds 15 seconds 10 seconds 70 seconds 50 seconds 50 seconds 40 seconds 20 seconds 10 seconds 10 seconds 30 seconds 40 seconds
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90% RESPONSE 60 seconds 120 seconds 120 seconds 30 seconds 60 seconds 45 seconds 20 seconds 300 seconds 240 seconds 240 seconds 120 seconds 60 seconds 40 seconds 40 seconds 70 seconds 90 seconds
PortaSens II Gas Detector
C16 Leak Detector
INTERFERENCES Individual gas sensors respond to other gases or vapors in various ways. Some sensors are very specific, exhibiting very little cross-sensitivity with other gases. Other sensors are not as selective, and will respond to a variety of gases if present. Refer to the tables on the following pages for data on the response of ATI gas sensors to other gases that might be present. Sensors are listed across the top of the table with the relative response listed below. For example, an SO2 sensor exposed to 1 PPM of HCN would produce a reading of 0.15 PPM. See notes at the end of the interference tables for other comments.
I N T E R F E R E N C E
NH3 CO H2 NO O2 Cl2 O3 HCl HCN HF H2S NO2 SO2 Hydride SiH4 CO2 CH4 CH3SH C2H2 C2H4 C2H6O
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SENSOR TYPE HCl HCN
NH3
Cl 2
O3
HF
-0.05 0.02 N * -0.1 -0.1 N N N 0.3 N N 0.5 0.5 N N N 0.03 N 0.01
N N N N N -1.5 N -0.08 N -0.1 0.2 -0.01 N N N N -0.04 N N N
N N N N N 0.7 -N -0.05 N -0.07 0.15 -0.01 N N N N -0.03 N N N
-0.05 N N N N 1 1 0.5 -0.1 --0.3 0.2 1 N N N N -0.1 N N N
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N 0.005 0.01 1.5 * N N -0.01 N 3 0.2 0.5 1.5 1.5 N N 1 N N 0.01
N N 0.01 3 * N N N -N N 0.5 2 4 4 N N N 0.04 N 0.02
H2S
SO2
CO
N 0.002 0.001 0.4 * N N N N N -0.1 0.1 0.5 0.5 N N 0.3 0.01 N 0.005
N N 0.005 0.04 * -0.1 -0.1 N 0.15 N N -0.08 -2 2 N N N 0.02 N 0.05
N -0.1 0.1 * N N N 0.1 N N N N N N N N N 0.1 0.1 N
PortaSens II Gas Detector
I N T E R F E R E N C E
NH3 CO H2 NO O2 Cl2 O3 HCl HCN HF H2S NO2 SO2 Hydride SiH4 CO2 CH4 CH3SH C2H2 C2H4 C2H6O
C16 Leak Detector
SENSOR TYPE Hydride NO2
H2
H2O2
O2
NO
N 0.1 -N * N N N N N N N N N N N N N 0.1 0.1 N
N 0.005 0.01 1.5 * N N 0.1 0.1 N 4 0.2 1 2 2 N N 1.3 0.1 N 0.02
N N N N -N N N N N N N N N N N N N N N N
N N 0.001 -* N N N N N N N N 1 1 N N N 0.05 N 0.001
N 0.001 0.001 N * 0.5 0.65 -0.3 -0.07 N -2.5 --1 -2 -2 N N -0.8 N N 0.001
N N 0.00002
N * N N N N N N N N -1 N N N 0.00005
N 0.00001
SiH4
COCl 2
H-C
N N 0.001 0.3 * N N N N N N N N 1 -N N N 0.005 N 0.01
N N N -0.1 N 0.1 N 0.05 0.5 N N -1 0.2 N N N N N N N N
N 0.5 0.05 0.8 * N N 0.2 0.1 N 2 0.1 0.4 2 2 N N 1 1.2 1 2
Interference Table Notes: 1.
2. 3.
4. 5.
Sensors marked with an asterisk (*) in the oxygen column are 3 electrode sensors that require a minimum of 5% oxygen to operate properly. Hydrogen sensors require oxygen levels at least two times the maximum percent hydrogen value to be measured. The data on the chlorine sensor also applies to bromine, chlorine dioxide, fluorine, and iodine sensors. Data on the hydride sensor refers to arsine, phosphine, diborane, hydrogen selenide, and germane sensors. Response is not exactly 1:1 for all hydrides. Contact ATI for details if exact response is needed. The sensor column marked “H-C” stands for hydrocarbon sensors. These include ETO (ethylene oxide), formaldehyde, alcohol, and acetylene sensors. Data presented in this table represent exposure of gas sensors to low PPM levels of the interfering gas. Very high concentrations of any interfering gas may cause either short term or long term response from a sensor.
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PortaSens II Gas Detector
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GAS CONCENTRATION ALARM FUNCTIONS The PortaSens II Leak Detector contains both visual and audible gas concentration alarm functions. Three alarm levels are provided, with adjustable set points (SP) for each alarm. The alarms are designated as CAUTION, WARNING, and ALARM. The Caution setting is normally adjusted to alarm if the installed gas sensor exhibits excessive negative zero drift. The Warning and Alarm levels are set to specific gas values to provi de an indication of high concentrations. Note that the Caution, Warning, and Alarm functions are only active when the C16 is operating in the normal mode. When in Calibrate or Sampling modes, the alarms are disabled. When the gas detector is in operation, the measured gas concentration is always being compared to the alarm set points. When the concentration exceeds the Warning set-point for 2 seconds, the LCD display will flash the message "WARNING" and the audible beeper will sound intermittently. If the Alarm set-point is exceeded, the display will flash the "ALARM" message and the audible beeper will sound continuously. If excessive zero drift is detected, the Caution message will flash, indicating that the sensor zero should be checked and adjusted if necessary. The Caution alarm will not activate the internal horn. To silence the alarm horn and stop the display flash, press the ACK key. Note that the alarm acknowledge key (ACK) will only appear during an alarm condition. All alarm set points can be changed by the user or can be turned off if desired. Refer to the instructions on page 21 for the proper adjustment procedures.
PUMP TROUBLE ALARM An internal diaphragm pump continuously delivers an air sample to the flow manifold containing the gas sensor. In normal operation, the flow rate is approx. 400 cc/min. Blockage in either the inlet or outlet will increase the sample transport time to the analyzer, resulting in a much slower response time. Should the pump fail during normal operation, the LCD display will indicate the message "PUMP TROUBLE" and the internal audible horn will sound intermittently. The internal pump will generally not be damaged by short term operation with the flow blocked. It is possible for the pump motor to run, even when there is no air being pumped through the system. This condition can occur if the pump is filled with water or if the filter becomes completely blocked. A flowmeter is included in the PortaSens II kit to allow quick verification of proper flow. Turn the instrument on and connect the sampling wand. Place the tip of the sampling wand into the tubing adapter attached to the flowmeter. Hold the flowmeter in the vertical position and verify that the flowrate is above 250 cc/min. Proper flow should always be verified before using the PortaSens for leak testing.
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BATTERY POWER SUPPLY The C16 is powered by two separate batteries. The primary battery supply comes from a standard "D” cell located in the handle of the detector. This battery will operate the unit for about 75 hours of continuous use. A standby rechargeable battery is also provided. Should the primary battery become discharged, the standby battery will supply power to operate the detector for another 6 hours. A charger is supplied for the rechargeable battery, with the charger jack located under the rubber seal on the side of the detector. While the instrument is in operation, a small battery symbol can be seen in the upper left hand corner of the display. This battery symbol will contain either a “P” or an “S”, indicating that the unit is currently drawing power from either the Primary or Standby battery. When the primary battery is low, the battery symbol will flash about an hour before it switches over to the standby battery. The battery symbol will again flash about an hour before the standby battery is discharged. When both power sources are too low, the instrument will simply shut off and will not restart until a new “D” cell is installed or the standby battery is recharged. The battery charger supplied with each unit is designed for standard 120 VAC outlets. A 220 VAC charger is available as an option. The special charger is listed on the parts list at the end of this manual and may be ordered from ATI or your local dealer. NEVER USE A CHARGER OTHER THAN THE ONE SUPPLIED BY ATI FOR USE WITH THIS INSTRUMENT. Connecting another type of charger may result in permanent damage to the battery or other instrument components. See Figure 3 on Page 15 for location. The sensor / charge LED will illuminate when the rechargeable battery is being charged. The C16 may be operated continuously from the battery charger. When operating from the charger, the battery symbol on the display will be replaced by an AC plug symbol. While operating from the charger, the internal rechargeable battery will also be charged. When operating on battery, power will be drawn from the “D” cell first, and from the rechargeable once the “D” cell has been depleted. When either or both the primary and secondary battery are nearly discharged, the instrument horn will beep at 1 minute intervals.
RS-232 COMPUTER INTERFACE The PortaSens II is equipped with an on-board data logger, which can be used to store gas concentration readings over time and transfer the data to a PC. The data logging function is enabled in units with firmware version 2.00 and higher. See DATA LOGGING section of this manual for details on the data storage function.
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FIGURE 3– CHARGER JACK / COMM PORT ORIENTATION (ATI-0402)
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START-UP SEQUENCE When the C16 power switch is activated, a number of messages are sequentially displayed. Note that the display always has a row of text across the bottom. The four switches on the front panel are called “soft switches” because they have different functions depending on what mode of operation the unit is in. The text just above each switch indicates what that switch will do when pressed. The following is the display sequence at startup. The sample displays use ammonia as an example, but the gas symbols, range, and setpoint information will depend on what sensor module is installed. Pressing the NEXT key will step to the next display. Pressing the SKIP key will jump directly to D10. Holding down the HOLD key will stop the scroll at the current display. D#
DISPLAY
EXPLANATION OF DISPLAY CONTENTS
D1
LOADING SENSOR
Indicates the information from the sensor is being loaded into the memory of the instrument
D2
Self Check
Indicates the unit is performing electronic checks
D3
Self Check Passed
Indicates startup checks successfully completed
D4
100 PPM
Indicates programmed full scale range.
NH3 SKIP
Bottom line indicates switch functions.
SKIP
Indicates the Caution setpoint. The minus sign under the C indicates that the caution is set at -20 PPM and the ↓ indicates the alarm will activate on a falling signal.
SKIP
Indicates the Warning setpoint. The current setpoint is 25 PPM and the ↑ indicates that the alarm will activate on a rising signal.
SKIP
Indicates the Alarm setpoint. The current setpoint is 50 PPM and the ↑ indicates that the alarm will activate on a rising signal.
50 PPM 500 PPM
Indicates the minimum and maximum full scale range for the sensor module currently installed in the detector.
HOLD NEXT
D5
20 PPM
C
↓ NH3 HOLD NEXT
D6
25 PPM
W
↑ NH3 HOLD NEXT
D7
50 PPM
A
↑ NH3 HOLD NEXT
D8
D9
D10
Range to HOLD NEXT
SKIP
Firmware Rev Sensor Rev
x.xx x.xx
HOLD NEXT
SKIP
P OFF
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0 PPM NH3 MENU SMPL
Indicates the revision levels for the firmware in the C16 detector and the sensor module currently installed. Indicates the current gas concentration. This is the normal operating display. The battery symbol in the upper left corner indicates which battery is currently providing power.
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PortaSens II Gas Detector
C16 Leak Detector
OPERATING MODES Look at the display D10 on the previous page. Along the bottom line you will see the key functions OFF, MENU, and SMPL. To turn the unit off, press and hold the OFF key as previously described. If you do nothing, the LCD will indicate instantaneous gas concentration as samples are drawn into the sensor manifold by the pump. This is the normal mode of operation. Pressing the SMPL key activates an optional measuring mode that can be useful to insure that measurements are done the same way every time. SMPL stands for “Sample Mode”, and is a predefined series of steps resulting in a single measurement. In sample mode, the detector will draw sample for a fixed period of time, then measure for a fixed period of time, and then display the average value calculated during the measuring time. At the end of the measurement, press the CLEAR button to prepare for another measurement. If the concentration has not dropped below a preset limit, the display will show the message “CLEARING” until the value falls back to that limit. The instrument will emit a “beep” when the sampling and measuring times are completed. The sampling time, measuring time, and clearing limit are all programmable variables. Refer to the programming section of this manual for details on adjusting these variables. Pressing the MENU key places the instrument in the menu mode. In menu mode, three softkeys are display as shown below.
M1
P
0 PPM NH3 LOG INFO DONE
Menu Mode display for access to information screens and logging functions.
Pressing the INFO key from this display will allow you to review the information display D4 through D9 explained on the previous page. This is useful if you need to review the values of the programmed alarm setpoints. Pressing the LOG key provides access to data logging variables. These adjustments are explained in detail in the DATA LOGGING section of this manual beginning on page 27. Pressing the DONE key will return you to the main display. If no key is activated within 30 seconds, the unit will revert to the main display automatically.
O & M Manual Rev. F, 10/03
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PortaSens II Gas Detector
C16 Leak Detector
SENSOR MODULE EXCHANGE The versatility of the PortaSens II leak detector stems from its ability to use a variety of sensor modules. These interchangeable modules allow one instrument to measure a wide variety of gases with extended range capabilities as described in the Introduction section. Exchanging one sensor module for another is a simple procedure. On the back of the instrument are two stainless steel thumb screws which hold the flow manifold in place. Loosen these two screws and remove the manifold lid. The installed sensor is a black cylinder with white membrane in the cavity recess. To remove, simply grab the sides of the sensor module and pull it straight back. The sensor is held in place with a miniature connector for easy removal. To insert a new sensor module, place the module connector first into the recess and rotate as needed until the module key lines up with the guide on the bottom of the recess. The sensor module can then be pressed in place, fully engaging the connector. When fully inserted, the face of the sensor module will be flush with the outer surface of the cavity. Replace the manifold lid and tighten the thumb screws securely (hand tight is sufficient). After a module change, verify the flow through the sampling wand using the flowmeter supplied with the unit. See Figure 4 on Page 19. The detector can be on or off during a sensor module change. If the power is on during a change, the display will indicate “SENSOR MISSING” when the sensor module is removed. When the module is replace or a new one is inserted, the display will display a “LOADING” message, indicating that sensor module data is being transferred from the sensor module into the detector.
O & M Manual Rev. F, 10/03
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PortaSens II Gas Detector
C16 Leak Detector
FIGURE 4 – MANIFOLD ASSEMBLY EXPLODED VIEW (ATI-0403)
O & M Manual Rev. F, 10/03
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