Table of Contents Section 1 General Information ......................3 1.1 Disclaimer ............................ 3 1.2 Safety information ........................3 1.2.1 Use of hazard information ....................3 1.2.2 Service and repairs ......................3 1.2.3 Precautionary labels......................4 1.3 Certification ..........................4 Section 2 Specifications ........................
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Table of Contents 5.4.5 Calibration medium ......................29 5.4.6 Locking out the instrument’s CAL button................30 5.4.7 Rolling average .........................30 5.4.8 Automatic shutdown ......................30 5.4.9 Measurement mode ......................30 Section 6 Calibrations ........................31 6.1 Barometric pressure sensor calibration..................31 6.2 Sensor calibration........................31 6.2.1 Calibration setup .......................32 6.2.2 Calibration in H or N at atmospheric pressure ...............33...
However, Hach Lange assumes no responsibility for any inaccuracies that may be contained in this manual. In no event will Hach Lange be liable for direct, indirect, special, incidental, or consequential damages resulting from any defect or omission in this manual, even if advised of the possibility of such damages.
General Information 1.2.3 Precautionary labels Read all labels and tags attached to the instrument. Personal injury or damage to the instrument could occur if not observed. This symbol, when noted on a product enclosure or barrier, indicates that a risk of electrical shock and/or electrocution exists and indicates that only individuals qualified to work with hazardous voltages should open the enclosure or remove the barrier.
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General Information Changes or modifications to this equipment not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules.
Section 2 Specifications Specifications are subject to change without notice. 2.1 Instrument specifications Details Specification Batteries: two C-type cells, NiCad or alkaline, each 26 mm x 50 Power Requirements mm, 2.4 to 3 volts total 15 hours operational use, 3 weeks purge backup (power off, Battery Autonomy purge gas supplied) Dimensions (HxWxD)
Section 3 Installation This section provides necessary information to set up the instrument. If you have any questions or experience any difficulties, do not hesitate to contact your Hach Lange representative regarding this procedure. 3.1 What you have received The ORBISPHERE 3654 portable analyzer includes the following major components: •...
Installation 3.3 Atmospheric pressure equilibrium As soon as you receive the instrument, it will be necessary to ensure the interior and exterior of the instrument are both at the same atmospheric pressure. It is probable that during shipment these pressures will become different. To ensure the pressures are equal, simply press the relief valve switch located on the top of the instrument (refer to 4 on page...
Installation To check the purge gas flow rate, immerse the end of this tubing in water and switch on the instrument. Gas should flow intermittently out of the tube. Note: During normal operation, and especially when the instrument is in standby mode, ensure that the exit of the purge gas tube is exposed to the atmosphere and not in contact with any liquid or hard surface.
Installation 3.7 Flow chamber installation The model 32013A or 32015 flow chamber allows the liquid or gaseous sample past the TC and temperature sensors. The flow chamber attaches to the TC sensor with a threaded collar and is sealed to the sensor with two O-rings (EPDM 20x2 mm and NBR 4x1.5 mm).
Installation 3.8 Installation completion check list 3.8.1 Power The instrument is designed to work on battery power or an external power supply. If battery power should drop, a [LO BAT] warning appears in the instrument LCD's top left corner, and they should be replaced.
Section 4 Operating Instructions 4.1 Operating controls The front panel of the instrument has a three-digit liquid crystal display (LCD). The LCD includes a right-side marker to distinguish between gas concentration and temperature display. This marker also indicates the measurement display units (g/kg, V/V, etc.) depending on the instrument configuration.
Note: The start-up tests will be repeated until successful, or for a maximum of 15 minutes. If the tests are still unsuccessful after 15 minutes, a [Err] message will be displayed and the instrument locked. Turn the instrument off and retry the start-up procedures, but if the problem persists, please contact your local Hach Lange service representative for assistance.
Operating Instructions Minimum sample flow rates, measurement ranges and response times for the various membranes are given in the tables in Sensor specifications on page The LCD includes a right-side marker to distinguish between gas concentration measurements and temperature. This marker also indicates the measurement display units (k/kg, V/V, etc. depending on the instrument configuration).
Operating Instructions 4.3.1 Automatic data acquisition Note: When the instrument is used to automatically store measurement data, all buttons except the POWER key are disabled. If enough time elapses to store all 500 values, the instrument will return to normal measurement mode and the buttons re-enabled. Before starting automatic measurement storage, first select the sampling rate desired using the WIN3654 program.
Operating Instructions 4.3.2 Manual data acquisition Note: You cannot store measurement data manually if the instrument has already been set up to store the data automatically. 1. For the first measurement you wish to store, press the STO button once to display a sample number.
Operating Instructions 4.3.3 Viewing stored measurements 1. Put the instrument into standby (by pressing the POWER key) 2. Hold down the Up Arrow button while switching the instrument back ON. The LCD displays a sample location number. 3. Scroll through the numbered sample locations of all the stored values using the Up Arrow and Down Arrow buttons.
Operating Instructions 4.4.2 Altering the sampling point descriptions For help in identifying the locations of various sampling points that are stored by the analyzer, you may choose the Sampling Point Description command from the Logger menu to bring up the dialog box illustrated in Figure Figure 5 Sampling point descriptions The measurement values to be placed in positions 0 through 499 (identified as Text 0, Text 1...
Operating Instructions 4.4.6 Clearing stored values To clear all the values stored in the analyzer via the WIN3654 program, choose the Clear Data command from the Logger menu. Since this action will clear the storage memory of the instrument, a warning appears first as shown left in Figure Figure 6 Clear stored values Choose OK to bring up the next dialog box to confirm the clear action.
Operating Instructions Click the TIMEBASE up/down pointers to change the time scale of the divisions of the chart. Each division mark along the baseline (1, 2, ...10) can be made to represent from 30 seconds to 2½ hours, providing from 5 minutes to 25 hours of continuously displayed samples. The chart updating rate is determined by the time scale selected, as shown in Table 4 below.
Section 5 Options Setup The WIN3654 program is an integral part of the analyzer. Running under Microsoft Windows®, it permits you to list and analyze up to 500 stored measurement values. The program also includes a special monitoring feature, which lets your computer act as a chart recorder, and enables a hardware test to ensure that the system is in good working order.
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Options Setup The Monitoring menu creates a running chart of real-time measurements. Refer to Monitoring measurements in real-time on page 22. These values can also be saved to the Windows Clipboard. The Configuration menu lets you see how your system has been configured for your application.
Lange representative. 5.4 Configuring the instrument The ORBISPHERE 3654 analyzer can be readily configured for your application using the following commands in the Configuration menu. The instrument must be connected to your PC and powered on, in order to change any configuration parameters.
Options Setup The gas measurement phase can also be selected from the instrument keyboard as follows: 1. Switch the instrument power OFF 2. Switch the instrument on by holding down the CAL button and then pressing the POWER button while still pressing the CAL button 3.
Note: You can create a solution having a known H or N concentration by dissolving H or N in water at a measured temperature and pressure. Hach Lange can provide equipment for generating such a solution. Alternatively, you can analyze a carbonated beverage independently by other acceptable means.
Options Setup 5.4.6 Locking out the instrument’s CAL button You can use the Configuration, Sensor Calibration Status menu to prevent an accidental sensor re-calibration from the instrument keyboard. Choose Disabled to lock out the keyboard CAL button. To unlock this capability, choose Enabled. Choose OK when the desired mode is selected.
Section 6 Calibrations 6.1 Barometric pressure sensor calibration You must have access to an accurate barometer to calibrate the instrument's internal barometric pressure sensor. This is done using the PC WIN3654 program. Choose Troubleshooting, Pressure Calibration and a message will warn that the current calibration will be lost.
Calibrations Ensure that normal measurement mode is selected in the Measurement Mode menu of the WIN3654 program. Refer to Measurement mode on page Calibration must only be carried out once the TC sensor is giving a stable measurement. Expose the membrane to the calibration sample until this stable reading is obtained. This usually takes about 5 minutes.
Calibrations 6.2.2 Calibration in H or N at atmospheric pressure The sensor can be calibrated in pure H or N gas at atmospheric pressure. WARNING Handle H gas with great care. It is extremely flammable and explosive. To ensure that the flow chamber and sensor components are dry, remove and blow dry the flow chamber.
Calibrations 6.2.3 Calibration in H or N at elevated pressure The sensor can be calibrated in pure H or N gas at an elevated pressure. This method requires an accurate pressure gauge connected to the exit of the flow chamber. WARNING Handle H gas with great care.
Calibrations 6.2.4 Calibrating in a liquid H or N solution The sensor can be calibrated in a standard liquid solution that has a known concentration of H or N You can create a solution with a known concentration by dissolving H or N in water at a measured temperature and pressure.
Section 7 Accessories and Attachments 7.1 Model 32311 flow meter A flow meter is available as an option, to attach to the top of the flow chamber, instead of the flow rate adjustment valve usually supplied. This can be used to set an accurate flow rate of the sample.
The membrane needs to be replaced once or twice a year depending on application conditions. This can be tailored accordingly. Note: If you are not familiar with ORBISPHERE sensor servicing, your Hach Lange representative will be glad to assist you.
Maintenance and Troubleshooting 8.3.1 Removing the membrane It is recommended to leave the sensor in place in the instrument when changing the membrane. It is not necessary to remove it. To remove the membrane, follow the steps below: First remove the flow chamber from the sensor by turning the flow chamber locking pin (see position in 4 on page 9) counter-clockwise and gently lifting the flow chamber off the sensor.
Maintenance and Troubleshooting 8.3.2 Installing the membrane To install the new membrane, follow the steps below: Note: The membrane mounting surface must be clean and even (on top of the sensor, where the membrane and sensor have contact). Replace the membrane O-ring on the sensor head with a new one.
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Maintenance and Troubleshooting Push the installation tool firmly downwards. This clasps the mounting ring onto the sensor head, folding the membrane(s) over the sensor tip. Remove the installation tool and guiding sleeve. Visually check for correct ring placement, try to push it down with your fingers.
Maintenance and Troubleshooting 8.4 Purge gas cylinder refill The analyzer uses one of two types of purge gas: • purge gas for H measurements • purge gas for N or H measurements You will need a model 32824A refilling hose to refill the purge gas cylinder. Figure 11 Purge gas cylinder refill Master storage cylinder Hose attachment...
Maintenance and Troubleshooting 8.4.1 N Purge gas Fill the N purge gas cylinder to a maximum of 200 bar from a master N storage cylinder, using fittings supplied with the analyzer. CAUTION Although N is not toxic, it is asphyxiating. Therefore, filling should be carried out in a ventilated place and leaks should be avoided.
Maintenance and Troubleshooting 8.5 Troubleshooting - instrument If your analyzer is behaving strangely (failing to calibrate, giving inappropriate measurement values, etc.) and you have attempted to rectify the problem by servicing the sensor (for instructions, refer to Sensor maintenance on page 39) but to no avail, you may wish to use the WIN3654 Troubleshooting menu to make sure that the instrument is configured correctly for your application, and is in good working order.
The Troubleshooting, Analog Voltage View gives a real-time look at voltages used by the system to transmit information about gas, temperature and pressure. This is useful when trying to identify an instrument problem with a Hach Lange service representative either on-site or over the phone.
In case of problems, it may be necessary to check the current version of your software as this may be required by Hach Lange if you need to contact them for assistance in problem solving. To identify the version of the software in your instrument, switch off the instrument. Then hold down the MEAS button while switching the instrument back on.
If the solenoid leaks Leaking solenoid valve (more than 1 bubble in 15 seconds) contact your Hach Lange representative. An external power supply is used but the Switch to battery power power supply is not clean...
Part Lists 9.3 Analyzer spare parts Table 10 Analyzer spare parts Part N° Description 28083 Connector LEMO 6, male. TC Sensor, Substance measured: Hydrogen, Purge gas: Nitrogen, Protection cap 31270 provided, Maximum pressure: 10 bar, External Temperature Sensor Included. TC Sensor, Substance measured: Hydrogen, Purge gas: Carbon dioxide, Protection 31272 cap provided, Maximum pressure: 10 bar, External Temperature Sensor Included.
Section 10 Glossary of Terms 10.1 Common units Table 12 Common units Unit Meaning percentage, by weight % vbar percentage per volume, barometric pressure referenced % vext percentage per volume, sample pressure compensated cc/kg cubic centimeters per kilogram g/kg grams per kilogram mg/L milligrams per liter mL/L...