ASA Electronics ChemScan mini UV254 User manual

ChemScan®
mini UV254 Analyzer
Installation, Operation and
Maintenance Manual
ASA, Inc.
Applied Spectrometry Associates, Inc.
2325 Parklawn Drive Suite I
Waukesha WI 53186
PH: 262-717-9500 FAX: [phone]
ASAAnalytics.com

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Table of Contents
ChemScan mini UV254 Analyzer 1
Analyzer Description 1
Installation and Adjustment 2
Safety 2
Startup Procedure 6
Verify Fluid Connections 6
Power-Up 6
Initial Zero 6
Calibrating to Match Reference Device 8
Menu Structure 13
Analyzer Maintenance 15
Maintenance Schedule 15
Maintenance Procedures 16
Interrupting On-Line Operation 16
Sample Line Screens 16
Solution Replacement 17
Manual Instrument Zeroing Procedure 19
Manual Chemical Cleaning Procedure 21
Mechanical Cleaning Procedure 22
Retrieving Log Data From the Analyzer 19
Analyzer Self-Diagnostics and Error Messages 21
Analyzer Troubleshooting Guide 22
Addendae 23
Analyzer Error Messages 24
Replacement Parts List 25

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ChemScan mini UV254 Analyzer
Analyzer Description
The ChemScan UV254 is a photometric analyzer designed to measure light absorbance or light transmittance
at a wavelength of 254 nm in liquid samples across a fixed path length in a flow through cell.
Absorbance is a measurement of change in light intensity across the sample.
Absorbance measurements at 254 nm can be correlated with measurements of organic matter in the sample,
using comparison values from samples that have passed through the analyzer and then have been analyzed in
a laboratory to measure the organic content.
Standard measurements of organic content include Total Organic Carbon (TOC), Dissolved Organic Carbon
(DOC), Natural Organic Matter (NOM) and Chemical Oxygen Demand (COD). The UV254 analyzer
includes the capability to display and communicate raw absorbance values, adjusted absorbance values or
calculated organics values for any of the standard organic measurement scales.
Raw absorbance values at 254 nm can also be recalculated and reported as a percent transmittance.
Figure 1

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Installation and Adjustment
The UV254 Analyzer is supplied with mounting feet as shown in Figure 2.
The analyzer should be mounted securely to an indoor wall or other suitable structure using appropriate
fasteners and washers. Indoor installation is recommended because ambient temperature cycles can cause
optical instability or freeze the zeroing and cleaning solutions.
A power cord is provided for connection to US standard 120 VAC power.
Alternatively, connection to 100 to 240V AC 50/60 cycle, single phase power lines and ground as shown in
the Figure 2 input power terminal detail view.
The sample line should be connected as shown in Figure 2. Figure 3 illustrates the required pressurized side
stream sample, with a minimum sample pressure of 2 psi and maximum pressures of 20 psi. A pressure
regulator should be installed if required to limit the pressure.
Analog output wires are connected as shown on the analyzer's internal label. (See menu to select analog
output range.) Analog outputs are in 4-20 mA format.
Safety
Only adequately trained, experienced personnel should operate or maintain this
analyzer.
This analyzer uses an acidic chemical cleaning solution. Typical chemical handling
precautions must be followed. Always wear safety glasses.
NOTE: HARMFUL UV RADIATION IS PRESENT IN THE FLOW CELL WHEN THE
INSTRUMENT IS ON! Exposure will cause severe and permanent eye damage!
TURN THE ANALYZER OFF BEFORE REMOVING THE FLOW CELL OR INSPECTING THE
OPTICS.

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Figure 2

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Figure 3

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Startup Procedure
Verify Fluid Connections
Sample, Cleaning and Zeroing connections must be installed as indicated on the installation drawing.
Connections must be firm and vacuum-tight; air drawn into the system will cause erroneous readings.
Power-Up
With proper connection made to 110/240 VAC, turn the analyzer ON by pressing the red power switch
located behind the front panel. (Access the switch by loosening the two captive Phillips screws on the right.)
The switch should illuminate. Secure the front panel.
The LCD display will display the default sign-on message. At this point the instrument is idle.
PRESS the MAIN MENU button
The display will now present 4 options. These four options are the only selections available to the operator.
The installer has access to several more.
The instrument must be allowed to stabilize for at least 20 minutes before zeroing. While waiting, you may
familiarize yourself with installation tools.
Initial Zero
In normal operation, the instrument cleans and zeros itself, and displays results based on subsequent light
throughput, presented in various units of measure. At installation the analyzer must measure and record the
initial, ideal cell readings to use for subsequent diagnostic purposes.
Allow 20 minutes for the instrument to warm up.
1. Turn off the manual sample valve (the blue hand valve) so sample no longer flows though the
instrument.
2. Clean the cell by selecting option (3). Select CLEAN. Press (2) for MANUAL cleaning. Press + to
turn on the pump, and pump for about 30 seconds. Press - to turn off the pump, and allow the
cleaning solution to sit in the cell for about 2 minutes. Then press MAIN MENU to exit this stage.
3. Draw zeroing solution into the cell. Press option (2) ZERO, then (1) MANUAL
4. The display shows the current (NEW) throughput and the previous (OLD) zero’s signal levels in
volts. NOTE: The new value will vary as it's displayed in real-time. We have not entered this data
yet, so disregard these values.
5. Press + to draw in zeroing solution. Draw for about 1 minute, then press - to stop the pump.
6. Observe the NEW value. As air bubbles formed by the pumping of the zeroing solution dissipate
the value will stabilize.
7. If the NEW Value is between 1.5 and 4.9 and varying by less than 0.005, the cell is clean and
usable.
8. Press ENTER to store the new reference zero. NOTE: The OLD value is now updated to match
the new.
9. Press MAIN MENU to exit this procedure.
10. Remember to open the manual ON/OFF valve.

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Calibrating to Match Reference Device
% Transmittance is a unit-less measurement ranging from 100% (the sample is absorbing no light) and 0%
(the sample is opaque). If the instrument was properly zeroed, then in principle the %T reading should
match that delivered by any other device. In fact, however, %T is also affected by the nature of the optical
path involved, the size of the absorbing/scattering particles, and other implementation factors. Because it is
a straight line from 0 to 100, traditional slope/offset adjustments cannot be done. Rather, the path length in
the flow cell should be changed to cause the sample flowing through the UV254 to absorb the exact same
amount of light as is being absorbed in the reference device. Since physical adjustment is impractical, the
adjustment is performed in software; the transmittance is calculated as absorbance units (logarithmic scale),
multiplied by a correction factor, and converted back to % Transmittance.
To calibrate the UV254 ChemScan % Transmittance Analyzer to match the reading from a reference device
follow the steps below.
1. Ensure that the ChemScan Analyzer is warmed up for at least 20 minutes and properly zeroed.
2. Put the ChemScan Analyzer “ONLINE” and wait for the reading to stabilize.
3. Take a reading of the same process fluid with the reference device.
4. Press the MAIN MENU key o the ChemScan Analyzer to place it in OFFLINE mode.
5. Press the “7” key. The top line will display the current measurement value. The ChemScan
Analyzer will then prompt for the LAB VALUE
6. Enter the value observed on the reference device, and press ENTER.
7. The instrument will calculate a cell correction factor and display it.
8. Press ENTER to accept the new cell correction factor.
9. Press MAIN MENU to exit.
It is advised that adjustments near the extremes of the measurement range – below 15% or above 85% - be
avoided, as midrange readings may become distorted.
A similar situation exists for absorbance, where zero AU (Absorbance Units) represents 100% light
throughput, and each added AU represents a power-of-ten decrease in throughput. Standard absorbance
units are measured using a 10mm cuvette or cell. In fact, for various reasons the UV254 has a 12.5mm cell.
The absorbance data is normalized to a 10mm path length by having a normal Cell Factor value of
(10/12.5)= 0.80. The instrument ships from the factory programmed at 0.80.

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Configuration Variables
Hidden option (9) from the main menu screen offers the installer a series of parameters. Use the + and -
keys to scroll through the options. The current value is displayed, and a new value may be entered at the
cursor. To store a new value, press the ENTER key. Starting from the beginning, these are:
“MAX CLEAN ATTEMPTS”: Number of times the instrument will attempt to clean itself in an
autozero/clean cycle before it times out and flashes a warning message.
“MAX ZEROING TIME”: Number of seconds the instrument will wait for a stable reading from the
zeroing solution. This is normally set at 120 seconds.
“CLEANING PUMP TIME”: Number of seconds the cleaning solution is pumped during an autozero/clean
cycle. Normally set to 30 seconds.
“ZEROING PUMP TIME”: Number of seconds the zeroing solution is pumped during an autozero/clean
cycle. Normally set to 60 seconds.
“SAMPLE REFILL TIME”: Number of seconds required to fully turn over the cell with fresh process
sample. This time does not include any sample line distance between the instrument and the process.
Normally set to 30 seconds.
“CLEAN SOAK TIME”: Number of seconds to let the cleaning solution sit in the cell during an
autozero/autoclean cycle. Normally set to 60.
“AutoClean FLUSH TIME”: Number of seconds to flush the cell with process following the clean soak.
Normally set to 30 seconds.
“# of DIGITS after DP”: How many digits are displayed after the decimal point. Normally set to 1.
Remember, more displayed digits doesn’t mean more accuracy, just more variance and obsessing operators.
“SEND INTERVAL”: Minutes and seconds between reports over the serial channel. Default is 1 minute.
“ON: ZC4 ZERO5 PUMP6....”: Not at all obvious, but useful. Controls the ZeroClean valve, the ZERO
valve and the pump. pressing digit 4 (hence ZC4) turns ON the zeroclean valve; pressing digit 1 (ZC1) turns
OFF the zeroclean valve. 5 turns On the zero valve, while 2 turns it OFF. 6 turns ON the pump, while 3
turns it OFF. Not listed on the screen, 7 turns on alarm relay one; 8 turns on alarm relay two. CLEAR turns
everything off.
“CLEAN IF %T is BELOW”: If the transmittance measured during an autoclean cycle is adequate, we can
forgo the cleaning portion, thus saving on solution. This value is the trigger point for that decision, and is
normally set at 95. If there is slime buildup on the flowcell windows, it may be wise to set this value up to
97 in order to ensure the cell gets cleaned on every autozero cycle.
“WAIT FOR STABLE HEAD TEMPERATURE”: If yes analyzer will wait for the source LED to be within
0.05 degrees C of optimum before taking readings. Press “.” (decimal point) to toggle.
“SERIAL SETUP MENU” : Set baud rate, parity, enable modbus, set modbus address
“INIT LOG”: Press Clear to clear the internal data log. This may be used if the monitored process had been
shut down for a time or the instrument had been idle for an extended period, making the current log
information irrelevant. Also displayed is the actual number of used log entries. If desired, the log output can
be triggered (to a printer, for example) by pressing the ‘0’ key.
“MAX LOG REPORTS”: Limits the number of reported (via serial channel) logged events to the most
recent N, where N is between 1 and 15,000. The maximum 15000 events are always logged, but this option
allows limiting the report size to a lower value.
Press “5” to Restore FACTORY DEFAULTS: Restores settings to factory originals. NOTE: Any user
settings will be over-written.
“CELL FACTOR”: Observe or modify cell factor (effective path length)
“CODE REVISION DATE”: The date the software was updated.

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Menu Structure
The analyzer is equipped with an operator interface consisting of a display and keypad. The operational
parameters can be adjusted through the operator interface. NOTE: Whenever a “+” is displayed in the
lower right of the display, use the + key to display more menu choices. A complete menu structure table
can be found at the end of this section.
The keypad is used to enter numerical values and to select menu choices for the analyzer. There are four
main menu paths:
1) ONLINE
2)ZERO
3)CLEAN
4)SETUP
NOTE: Data from the analyzer is frequently used by process control algorithms. Spurious responses to
calibration, test, or monitoring activities could severely disrupt these control loops. For this reason, the
analyzer outputs remain frozen at the most recent ONLINE data in all but the force-output modes when the
analyzer is taken offline.
ONLINE selection
The ONLINE menu selection puts the instrument in the ON-LINE mode. The flowing sample is
continuously analyzed, and the result is displayed on the front panel. Simultaneously the same data is
presented on the 4-20mA-output channel and sent over the serial port. Pressing the MAIN MENU key will
return to the MAIN MENU; if a security code is set, the operator will be prompted to enter that before the
instrument will leave the ONLINE mode. Upon leaving the ONLINE mode, the 4-20 outputs will be frozen
at the last measured value and the serial output will stop updating.
ZERO menu
Pressing 2 opens a menu, which offers the option of manual zeroing or triggering the automatic clean/zero
cycle. Pressing the MAIN MENU key will return to the MAIN MENU.
CLEAN menu
Opens another menu layer wherein the cleaning and zeroing solutions can be manually drawn into the
instrument. Select either, then press + to start the flow and – to stop the flow. Pressing the MAIN MENU
key will return to the MAIN MENU.
SETUP menu
Provides for configuration of the analyzer and the various output channels.

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MENU STRUCTURE
MAIN
1) ONLINE CONTINUOUS MONITORING
2) ZERO -outputs are frozen at last online reading
display reflects current analysis
1) ZERO
1) AUTO -triggers the automatic zeroing cycle.
2) MANUAL -press + to start flow of zeroing solution,
press – to stop. ENTER to read zero.
3) CLEAN -outputs are frozen at last online reading
1) AUTO
2) MANUAL
4) SETUP -configure analyzer
1) AUTOZERO
1) TIME-sets Time of Day when analyzer autozeros
2) INTERVAL -sets PERIOD of time between autozeros
2) PARAMETER SELECT
1) 254 ABS
2) %T 254
3) SET CLOCK
4) 4-20mA OUTPUT
1) 4mA point -sets the concentration at 4mA
2) 20mA point -sets the concentration at 20mA
3) FORCE -forces the output to an entered current - Select
Channel “1” then enter the desired value
5) ALARM
1) SETPOINT -sets the trigger point for alarm relay
-alarmwhenABOVEorBELOWsetpoint.
6) SECURITY CODE -sets the security password, if active.
7) LOGS
1. INTERVAL MINsec -- log based time
LOG INTERVAL: 10:00 [current tin minutes, seconds]
NEW INTERVAL: [enter new value]
press CLEAR to start over
press ENTER to save value; logging will be based on INTERVAL.
Press MAIN MENU to exit
2. CHANGE OF READING – log based on a step in the reading
LOG STEP: 0.1 [current; a change of 0.1% will trigger log]
NEW STEP: [enter new value]
press CLEAR to start over
press ENTER to save value; logging will be based on change
press MAIN MENU to exit
8) RESPONSE TIME -- seconds to average readings
RESPONS SECS: 7 [current; enter a value between1 and 60]
press enter to save value
press MAIN MENU to exit

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Analyzer Maintenance
The analyzer has been design to minimize the total amount of maintenance time. Typically the analyzer
requires less than 2 hours of maintenance per month.
Maintenance Schedule
Routine maintenance of the UV254 series analyzer is limited to a few periodic procedures as follows:
Daily
- Observe operation looking for abnormal operation
Weekly
- Fill Zeroing and Cleaning solution containers.
- Inspect and clean Inlet Strainer
Monthly
- Perform Manual Zero Operation and Log Indicator Numbers
Quarterly (or as needed)
- Perform a Calibration Verification and Adjustment

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Maintenance Procedures
The following pages are procedures describing the routine maintenance operations.
Interrupting On-Line Operation
To interrupt on-line operation the “Main Menu” key is pressed. If a security code is programmed,
the following message will appear:
ENTER SECURITY CODE
Enter the security code followed by the ENTER key. The display will to return to the Main Menu. If an
invalid security code is entered or if the entry of the code takes longer than 30 seconds, the following
message will be displayed for 5 seconds:
INVALID SECURITY CODE
The instrument will then return to the on-line mode.
Sample Line Screens
The sample line inlet is equipped with a small mesh screen to prevent the entry of large particles and debris
into the system. This screen must be periodically cleaned or replaced.
To clean the strainers, INTERRUPT on-line mode and close the sample line valve. Unscrew the strainer
bowl and remove the screen. If algae is growing on the screen clean it with a bleach solution. Rinse the
screen and bowl thoroughly with tap water. Install the screen into the strainer bowl. Be sure the o-ring is
installed and screw the bowl onto the housing. Open the sample line valve and look for leaks.
After all strainers have been cleaned, return the analyzer to the on-line mode.

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Solution Replacement
Zeroing Solution
The analyzer will automatically perform a zeroing operation at a preset interval. The zeroing solution is
typically deionized or distilled water. The zeroing solution must contain no nitrate, nitrite, iron or organics.
A 20-liter zeroing solution container is provided with the analyzer.
Cleaning Solution
While the analyzer is performing an autozero, it will test the need for cleaning the flow cell. The typical
cleaning solution is 1 liter of Muriatic acid (HCl) into 9 liters of DI water. A 10-liter cleaning solution
container is provided with the analyzer.

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Manual Instrument Zeroing Procedure
The ChemScan UV254 Analyzer must be zeroed occasionally to correct for drift and flow cell fouling. The
analyzer will automatically perform a zero on a regular basis (as set in the SETUP menu). However it is
important to periodically perform a Manual Zero Operation to track the indicator numbers. This procedure
simply involves rinsing the flow cell with deionized water, initiating a zero reading and testing the zero.
Items Required:
1 gallon of deionized water
Interrupt on-line mode:
Press the Main Menu key on the keypad. If a security code is programmed, the following message will
appear:
ENTER SECURITY CODE
Enter the current security code followed by the ENTER key and the Main Menu will be displayed:
1) ONLINE 3) CLEAN
2) SAMPLE 4) SETUP
Instrument Zeroing:
Press 2 for ZERO. The following message will be displayed:
1) MANUAL
2) AUTO
Selection of 2) AUTO will cause the system to immediately initiate an auto zero cycle. The instrument will
automatically flush with DI water, take a reading, compare the values to certain set points, determine if
cleaning is necessary, auto clean, re-zero and re-test. For details concerning the autozero cycle, refer to the
Selection of 1) MANUAL ZERO will require the operator to manage the zeroing procedure and to interpret
the indicator results. This zero once saved, serves as a point of reference for internal diagnostics.
Press 1 for MANUAL ZERO. The following message will be displayed:
NEW: [XXXX] OLD [XXXX]
+ OR -, Zeroing Pump On/Off
Using the + key to begin flushing the deionized water. Allow the water to flush for 2 minutes and press the -
key to stop flushing; wait 30 seconds for the water to settle. Press ENTER to take the reading. The
instrument will read the deionized water and store the reading as a zero. The new zero value will be
displayed on the right left of the top line. The previous zero displayed to the left.
Using the + and - keys to control the pump, allow deionized water to flush for 8-10 seconds.
The Zero Value should be above 0.500. If not, manually clean the flow cell. If the reading varies by more
than 0.005, flush again, pause for 10 seconds, and observe again. Continued noisy zero indicates there may
be loose material in the flow cell, which must be removed by following the cleaning procedure.

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Manual Chemical Cleaning Procedure
The ChemScan UV254 Analyzer uses ultraviolet light to measure chemicals. Over time the windows in the
flow cell may foul. The flow cell windows must be cleaned occasionally to insure strong light signal through
the sample. This can be accomplished by simply flushing the flow cell and tubes with a mild acid rinsing the
cleaning solution out and zeroing the instrument.
Items Needed:
250 ml of 20 percent HCI acid solution
1 gallon of deionized water for zeroing.
Interrupt On-Line Mode:
If the instrument is in the ON-LINE mode, press the Main Menu key on the keypad. If a security code is
programmed, the following message will appear:
ENTER SECURITY CODE
_
Enter the current security code and the instrument will display the MAIN MENU.
Acid Flush:
Note: Cleaning solution can cause permanent damage to eyes, skin and clothing. Take proper precautions
while handling. If solution comes in contact, rinse heavily with water.
On the instrument keypad, press 3 for CLEAN. The CLEAN MENU will be displayed:
Press 2 for MANUAL.
Press the + key to begin pumping the cleaning solution. Allow the pump to run for 30 seconds. Press the -
key to stop the pump. Allow the cleaning solution to stay in the flow cell and tubes for 2 minutes, THEN
PRESS Main Menu to exit.
Instrument Zeroing:
Zero the instrument using the MANUAL INSTRUMENT ZEROING PROCEDURE.
Following the zeroing procedure, note the Zero instability. If greater than 0.005, the flow cell must be
disassembled and cleaned.
Returning to On-Line Mode:
From the MAIN MENU, press 1 for ON-LINE.

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Mechanical Cleaning Procedure
Occasionally the automatic cleaning of the flow cell will not remove enough of the fouling on the flow cell
windows. If the analyzer readings are erratic or the chemical cleaning solution is being consumed more
rapidly than normal, perform the MANUAL ZEROING PROCEDURE. If the zero is below the specified
range, perform a mechanical cleaning.
Items needed
One #2 Phillips screw driver.
One wide mouth liquid container 50 - 100 ml.
One box of laboratory lens wipes.
One gallon of deionized water for zeroing.
Turn off the manual sample valve.
Flush the Flow Cell:
From the MAIN MENU, press 2 for ZERO.
The ZEROING menu will be displayed:
(l) MANUAL (2) AUTO
Press (l) for MANUAL.
Using the + and - keys to control the pump, allow deionized water to flush for 60 seconds. Press the - key to
stop the flow. Press the MAIN MENU key to return to the Main Menu.
Turn off the analyzer. NOTE= HARMFUL UV RADIATION IS PRESENT IN THE FLOW CELL WHEN
THE INSTRUMENT IS ON! Exposure will cause severe and permanent eye damage!
Removing the Flow Cell Assembly
1) Hold a small container under the flow cell sample inlet fitting. Loosen the fitting and capture the
deionized water into the container. Remove the tubing from the fitting.
2) Remove the tubing from the top of the flow cell.
3) Remove the two thumbscrews securing the flow cell.
4) Carefully remove the flow cell assembly by sliding it out the front of the flow cell mount.
Disassembling and Cleaning the Flow Cell Assembly
1) Remove the two Phillips head screws securing the mounting plate.
2) Remove the four window plate mounting screws.
3) Clean the windows using laboratory lens wipes dipped in water or cleaning solution.
4) Wipe the windows and flow cell completely dry.

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Figure 5

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Assembling and Mounting the Flow CellAssembly
1) Mount the window plates to the flow cell body with the larger window against the o-rings and the cover
plate mounting holes facing the same direction. Be sure the o-ring is installed and fully compressed.
Note: Tighten the four window plate screws in an alternating sequence to evenly compress the o-ring and
avoid breakage of the windows.
2) Wipe the outside of the flow cell.
3) Mount the cover plate to the window plates.
4) Carefully slide the flow cell into the flow cell mount and secure using thumbscrews.
5) Attach the fluid tubing and tighten the fittings.
Turn on the instrument. Allow 20 minutes for warm-up.
Testing the Flow Cell Assembly
1) Perform the MANUAL ZEROING PROCEDURE.
Following the zeroing procedure, note the zeroing value. If they are less than 5000, call ChemScan Service
for further instructions.

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Retrieving Log Data From theAnalyzer
The analyzer stores about 15,000 log entries. Log entries are made up of events (going online, going offline,
zeroing operations, data readings, etc.), which are time stamped and stored in nonvolatile memory.
Retention time without power applied is approximately 100 years.
Log entries may be read out using the analyzer’s serial channel.
Communications settings:
9600 baud
8 bit data
2 stop bits
No parity
No handshaking
Procedure for using a computer running a terminal emulator program
(HyperTerminal, PCPlus, etc.):
Connect a straight through (no crossover) DB9 - to – DB9 serial cable between the computer and the female
DB9 connector located in the center of the analyzer’s circuit board (found behind the control panel).
Open a serial channel, with the above settings.
The Following Detailed Description Applies to “HyperTerminal” Found in Most Windows Operating
Systems:
Click on “Start”, “Programs”, “Accessories”, “Communication” and “HyperTerminal”.
A “Connection Description” dialog box will open. Enter a file name, naming it as you wish, where you wish,
on the computer. (For this example “ChemScan” is the file name.) A “ChemScan – HyperTerminal”
communication box will open with the file name you specified.
When the “Connect To” dialog box appears select “COM 1” (or other suitable COM channel) under the
“Connect Using” heading and select “OK”. There is no need to specify “Country/Region, Area Code, or
Phone Number” information.
A “Com 1 Properties” box will open. Specify “Port Settings” as indicated above, (Bits Per Second: 9600,
Data Bits: 8, Parity: None, Stop Bits: 2, Flow Control: None), then select “OK”.
The cursor prompt should appear inside the “ChemScan – HyperTerminal” box.
This concludes the detailed description relevant to the Windows OS HyperTerminal Software.
The following text is also relevant for other terminal emulator programs.
On the computer keyboard, enter the command to initiate download: GETLOG.
The command should echo to the computer’s display. If you cannot see what you type, there is a problem
with the serial channel or the cable.
After you press the ENTER key, the instrument will send its internal log. When the data transfer is finished,
close the file you opened, and terminate the terminal emulator.
15,000 entries is perhaps too much information. You can limit the amount reported to any value you wish.
For example, to receive the last 100 entries, type GETLOG 100.
Perhaps you wish to put the log data into a spreadsheet. In that case, the non-reading events such as power
up, cleaning, etc., would need to be removed. To eliminate the need to remove the non-reading events
manually you can tell the analyzer to report only readings by typing GETLOG READINGS 500. This will
return the last 500 stored readings without operational information.
Or if you want to see what’s been happening with the operation, type GETLOG EVENTS 100 to get the last
100 events without any reading data. If you want all the data included, you can type GETLOG ALL 1000 to
get all of the last 1000 log entries.
When the internal log reaches the end of its storage space it begins overwriting the earliest data, so there is
no need to manually erase the log file. Should you wish to do so, however, use the command RESET LOG.
GETLOG [ ALL] [value]
[READINGS][value]
[EVENTS][value]
RESET LOG