Each of the up to 12 thermocouples is scanned once every four seconds to once every
hour (settable). The current readings are displa yed on the large liquid crystal display . Readings that exceed a maximum or minimum value can be set to trigger an alarm.
Thermocouples of types: B, E, J, K, N, R, S or T can be used.
Up to 4,680 data points can be logged (stored) within the unit, including readings from all
12 channels and the date and time of the readings.
The unit can be directly connected to a printer to provide a continuous printout, and/or to
your computer. Software to permit a personal computer using WINDOWS
®
95/98 or
WINDOWS NT
®
to store data from the unit, remotely operate the unit, and synchronize
the operation of multiple units is included.
Model Nos.
69200-00 Benchtop 115V
69202-30 Benchtop 230V
+ALARM
EXIT
MENU
°F
1
STORE2 LOG
4
PRINT
5
MAX
6
MIN
7
AVG
8
HOLD
9
SCAN0CLEAR
3
RECALL
Digi –Sense ®
EU Declaration of Conformity
Name of Apparatus: Scanning Thermocouple Thermometer
Model Number: 69202-30
Description of Apparatus: 12-Channel Benchtop Thermocouple
Scanner
Barnant Company declares that the above model is in conformity
to the following harmonized standards and directives:
Applicable Applicable Manufacturer’s
Directives Specifications Report Number
73/23/EEC EN61010-1/A2: 1995 TR9866
93/68/EEC
89/336/EEC EN61326-1/A1: 1998 TR9867
92/31/EEC
93/68/EEC
The last two digits of the year in which the current configuration of
the the above model was assessed per the Low Voltage Directive
is: 00.
Manufacturer:
Barnant Company Division
Cole-Parmer Instrument Company
28W092 Commercial Avenue
Barrington, IL 60010-2392
USA
Tel.: 847-381-7050
Manufacturer’s Signature:
James W. Doll Date
Vice President, Engineering
10 November, 2000
1
Introduction
Safety Precautions
Introduction
This Scanning Thermocouple Thermometer continuously monitors
temperatures at up to 12 locations. It is designed for laboratory or
industrial applications for unattended temperature monitoring. An alarm is
set off when any thermometer exceeds its preset minimum or maximum
temperature. Temperature data is stored within the unit and can be
output to a printer or PC.
Safety Precautions
DANGER: If thermocouples are at a high voltage, this voltage may be
present at other points inside the instrument and outside at
all the connectors.
WARNING: Disconnect or turn off power source before making
connections.
WARNING: Turn power off and completely disconnect instrument.
Disconnect power source, thermocouples, computer, links,
and printer.
WARNING: Other than a lithium battery, there are no user serviceable
parts inside. Replacement of the lithium battery must be
performed per the Maintenance section of this Operating
Manual. Refer servicing to your dealer.
CAUTION: Be sure available power matches instrument power require-
ments.
CAUTION: Protection provided by the unit may be impaired if the unit is
installed and/or operated in a manner inconsistent with
these instructions.
WINDOWS, WINDO WS NT - Reg TM Microsoft Corp.
CENTRONICS - Reg TM Genicom Corporation
Trademarks bearing the ® symbol in this publication are
registered in the U.S.A. and in other countries.
2
Table of Contents
Page
Introduction ................................................................................. 1
Safety Precautions ...................................................................... 1
Table of Contents ........................................................................ 2
Features ...................................................................................... 4
Package contents........................................................................ 5
Quick reference:
Front panel controls.............................................................. 6
Front panel display ............................................................... 8
Rear panel connections........................................................ 8
Rear panel connections
Thermocouple connections .................................................. 9
Power switch ........................................................................ 9
10-28V DC jack .................................................................... 10
PC/IN jack............................................................................. 10
OUT/LINK jack...................................................................... 11
PARALLEL PRINTER connection......................................... 11
TRIGGER + GND connection............................................... 11
Installation ................................................................................... 12
Front panel displays and controls
1 STORE button ................................................................... 13
2 LOG button ........................................................................ 14
3 RECALL button.................................................................. 15
4 PRINT button ..................................................................... 16
5 MAX button........................................................................ 17
6 MIN button ......................................................................... 18
7 AVG button......................................................................... 19
8 HOLD button...................................................................... 19
9 SCAN button...................................................................... 20
0 CLEAR button.................................................................... 20
MENU button ........................................................................ 21
Up-Down Arrow keys ............................................................ 21
Left-Right Arrow keys ........................................................... 22
EXIT button........................................................................... 23
ALARM button ...................................................................... 23
Temperature alarms .......................................................... 23
Other alarms ..................................................................... 25
MENU
About the MENU................................................................... 26
3
MENU - How to:
Set the Scale ........................................................................ 28
Change the resolution .......................................................... 29
Enable/Disable channels ...................................................... 30
Setup thermocouple types.................................................... 31
Adjust the display contrast.................................................... 32
Set trigger type ..................................................................... 33
Set trigger mode ................................................................... 34
Adjust the scan rate.............................................................. 35
Adjust the print rate .............................................................. 36
Adjust the log rate................................................................. 37
Set the alarm mode .............................................................. 39
Set the alarm print ................................................................ 40
Set HI alarm(s) ..................................................................... 41
Set LO alarm(s) .................................................................... 42
Set alarm hysteresis ............................................................. 43
Adjust HI alarm setpoints...................................................... 44
Adjust LO alarm setpoints .................................................... 45
Enable/Disable the alarm beeper ......................................... 46
Set the date format ............................................................... 47
Set the date .......................................................................... 48
Set the time .......................................................................... 49
Do a field calibration ............................................................. 50
Print a calibration report ....................................................... 53
Calibration to water............................................................... 55
Power up modes ......................................................................... 56
Maintenance
Care and cleaning ................................................................ 57
Battery .................................................................................. 58
Warranty...................................................................................... 59
Product Return ............................................................................ 59
Technical Assistance................................................................... 59
Specifications .............................................................................. 60
Appendices
A Error messages .................................................................... 62
B Guidelines to Thermocouple Selection................................. 63
C Temperature conversion ....................................................... 63
D Menu flow chart .................................................................... 64
E Factory default settings......................................................... 66
Table of Contents continued
Page
4
Features
Input
• Up to 12 thermocouple probes, each connected to a separate channel.
• Thermocouples can be different types.
• Thermocouples of types B, E, J, K, N, R, S or T can be used.
• Channels can be individually enabled or disabled.
Data storage
• Up to 4,680 data records can be stored in the unit (a record includes
readings of all 12 channels plus time and date).
• Data can be logged (automatically stored).
• Current data can be manually stored by pushing the STORE button.
• Data is maintained even when the instrument is turned off or un-
plugged from power.
Display
• Displays the thermocouple number and temperature as scanned.
• Operator can set the scan interval from a minimum of 4 seconds to a
maximum of 1 hour.
• Readings can be stored and displayed in °C, °F, K, or °R.
• Resolution to 0.1° can be displayed.
• Display can show: current, maximum, minimum, or average temperature .
• Average temperature display also displays the number of readings
being averaged.
• Hold function freezes all 12 channels.
Data output
• All 12 channels can be output to a printer simultaneously.
• Current, stored, or logged data can be directly sent to a printer
(CENTRONICS® parallel).
• Time between printing cycles is adjustable.
• Current, stored, or logged data can be sent to a personal computer
(PC)(RS-232 serial).
Calibration
• Channels can be individually calibrated manually.
• F actory calibration remains in memory and can be restored at any time.
Software
• Software (for a PC running WINDOWS 95/98 or WINDOWS NT) is
included.
• Software use is optional.
• Software installation instructions and software manual are on the
provided CD-ROM. See readme.txt for latest information.
• Software permits control of up to 8 units.
• Real time data collection.
• Data can be input to spreadsheet or graphing software.
5
Features continued
Package contents
Alarms
• High and low alarm temperatures can be set for each channel
individually.
• An open thermocouple automatically triggers an alarm.
• An alarm causes the alarm icon to be displayed, and emits an audible
beep.
• The audible beep can be disabled.
Error messages
• Messages indicate channel and fault condition.
Package contents
Scanning thermometer
Includes wire stand for desktop
convenience.
Link cable
RJ-11 to RJ-11 seven feet long. Use to
interconnect scanning thermometer instruments.
PC adapter
RJ-11 to DE-9 female. Used to connect
instrument to your PC, using the link cable.
Trigger Connector
Operating Manual
This book.
Warranty card
+ALARM
EXIT
MENU
°F
1
STORE2 LOG
4
PRINT
5
MAX
6
MIN
7
AVG
8
HOLD
9
SCAN0CLEAR
3
RECALL
AC Adapter - as supplied.
Software
WINDOWS 95/98 and WINDOWS NT on CD-ROM. Serial software specifications on CD-ROM.
Not supplied
Printer cable
DB25 male to the input connection of your parallel printer.
LOG Push to
toggle data
logging. (14)
RECALL Push to scroll
through logged readings.
Up-Down arrow keys scroll
through reading numbers.
Left-Right arrow keys
select channel displayed.
RECALL cycles through
reading date, reading time,
and reading temperature.
Push and release EXIT to
exit. (15)
Quick Reference
Front Panel Controls
See the page number (in parenthesis) for full information about the item.
STORE Push to
store the current set
of readings in
memory. “STORE”
appears in the
display. (13)
PRINT Push to
turn printing on
or off. (16)
MAX Push to display the
maximum reading and time
since last power up or last
cleared. Left-Right arrow
keys select channel displayed. To reset push
CLEAR then MAX. To exit
push EXIT. (17)
+ALARM
EXIT
MENU
1
STORE2 LOG 3RECALL
4
PRINT
5
MAX
6
MIN
7
AVG
8
HOLD9SCAN
°F
0
CLEAR
SCAN Push to resume scanning display after pushing Left-Right arrow
keys. Also, this immediately initiates a new scan. (20)
HOLD Push to freeze current display readings. Scanning continues.
Left-Right arrow keys select channel displayed. To exit push HOLD. (19)
MIN Push to display the minimum reading and reading time since last
power up or last cleared. Left-Right arrow keys select channel displayed. To
reset push CLEAR then MIN. To exit push EXIT. (18)
AVG Push to display the average reading and number of readings since
last power up or last cleared. Left-Right arrow keys select channel displayed. To reset push CLEAR then AVG. To exit push EXIT. (19)
Use Left-Right arrow keys to select a channel for display. Scanning
stops. Push SCAN to resume. (22)
ALARM Push to silence the audible alarm. Alarm icon remains. (23)
EXIT Push to exit any menu or display mode. Operation continues. (23)
MENU Push to sequence through menu choices for instrument setup. (21)
Use Up-Down arrow keys to scroll thru the MENU. Otherwise inactive. (21)
CLEAR Push CLEAR then push STORE, LOG, MAX, MIN, AVG or ALARM.
Clears respective value(s) from memory. (20)
6 7
8
10-28 VDC
7-20 VAC
500 MA
12 CHANNEL TERMOCOUPLE SCANNER
PARALLEL PRINTER
TRIGGER
+ GND
OUT/LINK
RS232
MODEL ####-##
Mfg. By Barnant Company
Barrington, IL 60010-2392
USA
1
7
2
8
3
9
4
10511612
PC/IN
ALARM
°F
4
2
STORE
Quick Reference Continued
Front Panel Display
Rear Panel Connections
1. CH and the channel number
display the thermocouple that is
being read.
2. The number of the channel being
displayed is repeated here.
3. The temperature is displayed.
4. The temperature scale is given.
5. A flashing channel number
shows a problem with that probe.
6. Words across the bottom of the
display indicate status of the
instrument. (Example: STORE
indicates that temperature
records are logged or stored.)
7. The word ALARM flashes when
an alarm is present.
8. When flashing, indicates an
alarm.
4
1 2 3
Note: Example display
56 78
1. 1-12 Connect thermocouples here (two blade mini-ANSI
connectors).
2. Power switch: = on, = off.
3. 10-28V DC Power supply input. Connect the input connector of the
supplied AC adapter here.
4. PC/IN Connect (using supplied cable) to a serial port on your PC
computer (RS-232 connection).
5. OUT/LINK For linking additional 12-Channel Scanning Thermocouple
Thermometer instruments. Connect OUT/LINK on one
instrument to PC/IN, using RJ-11 connectors.
6. PARALLEL Use a standard parallel printer cable (25 pin D-sub
PRINTER connector) to directly connect a PC printer.
7. TRIGGER + Connect for external events to trigger printing or
GND data storage.
1.
2. 3. 4. 5. 6. 7.
9
Rear Panel Connections
Thermocouple connections
Power switch
A. Thermocouple connections
• Connect up to twelve thermocouples here.
• Jacks are for two blade mini-ANSI connectors.
• Thermocouples of types B, E, J, K, N, R, S, or T can be used. See
Appendix B for a description of thermocouple types.
• Any combination of thermocouple types can be used at the same time.
• If a thermocouple connection (channel) is not used it may be disabled
using the Menu. See Menu - How to: Enable/Disable channels on
page 30.
B. Power switch
Toggle to l to turn power to the instrument on.
Toggle to 0 to turn power to the instrument off.
When power is turned on the display goes through a display check
sequence: all display elements are turned on momentarily, then
the 1,2,...12 icons (small numbers) turn off in sequence, and then the
display switches to normal operation.
An internal lithium battery maintains the real-time clock for power outages for over a year.
10-28 VDC
7-20 VAC
500 MA
12 CHANNEL TERMOCOUPLE SCANNER
PARALLEL PRINTER
TRIGGER
+ GND
OUT/LINK
RS232
MODEL ####-##
Mfg. By Barnant Company
Barrington, IL 60010-2392
USA
1
7
2
8
3
9
4
10
5
11
6
12
PC/IN
1
7
2
8
3
9
4
10
5
11
6
12
A
B
10
Rear Panel Connections continued
10-28V DC jack
PC/IN jack
10-28 VDC
7-20 VAC
500 MA
12 CHANNEL TERMOCOUPLE SCANNER
PARALLEL PRINTER
TRIGGER
+ GND
OUT/LINK
RS232
MODEL ####-##
Mfg. By Barnant Company
Barrington, IL 60010-2392
USA
1
7
2
8
3
9
4
10
5
11
6
12
PC/IN
A
B
A. 10-28V DC jack (Power supply input)
Connect the input connector of the supplied AC adapter here.
Polarity may be either center +, or center –, or AC.
The instrument will accept: 10-28V DC (non-polarized) input @ ~ 300 mA,
or 9-20V AC , 50-400 Hz @~ 500 mA.
The input connector is a 2.5 mm ID, 6.4 mm OD power jack. (Switchcraft
760 or 765 or equivalent.)
B. PC/IN jack (Computer or link connection)
Computer connection Connect (using supplied cable) to a
serial port on your PC computer (RJ-11 connector to DE-9
female using the RS-232 protocol). Software commands
and instructions are available on the supplied CD-ROM. See
package contents page 5.
Link connection Connect PC/IN (using wire with RJ-11 connectors) to
OUT/LINK connection on additional instruments. Uses Linkable Instrument Network connectors and software protocol.
PC/IN
10-28 VDC
7-20 VAC
500 MA
11
Rear Panel Connections continued
Out/Link jack
Parallel Printer connection
Trigger + Gnd connection
A. OUT/LINK jack
Link connection. Connect OUT/LINK (using wire with
RJ-11 connectors) to PC/IN connection on additional
instruments. Uses Linkable Instrument Network
connectors and software protocol. Either end of the
chain can be used as the computer connection.
10-28 VDC
7-20 VAC
500 MA
12 CHANNEL TERMOCOUPLE SCANNER
PARALLEL PRINTER
TRIGGER
+ GND
OUT/LINK
RS232
MODEL ####-##
Mfg. By Barnant Company
Barrington, IL 60010-2392
USA
1
7
2
8
3
9
4
10
5
11
6
12
PC/IN
B. Parallel Printer connection
Use a standard parallel printer cable (DB-25
male to 36 position CENTRONICS male) to
directly connect a PC printer. See PRINT button on page 16. No additional software or hardware is required for printing.
PARALLEL PRINTER
C. TRIGGER + GND connection
Optional. Connect for external events to trigger
printing or data storage. Contact closure or open
collector type logic signal to ground. (Internal 5V
DC pull-up through 5K ohms resistance with
100pf capacitance to ground.) Mating connector
supplied.
Use pins 1 & 2 for contact closure.
Pins 3-5 not used.
TRIGGER
+ GND
TRIGGER
+ GND
12 3 4 5
OUT/LINK
RS232
A B C
12
Installation
1. Attach up to 12 thermocouples.
2. Connect the AC adapter to the instrument.
3. Plug the AC adapter into an outlet.
4 - 7 are Optional
4. Connect the PARALLEL PRINTER output to a PC printer (standard
parallel port cable - not supplied).
5. Connect the PC/IN jack to a serial port of your WINDOWS PC (use
the supplied cable).
6. To interconnect instruments connect the OUT/LINK jack of one
Scanning Thermocouple Thermometer to the PC/IN jack of the next
(cable supplied).
7. To control printing or data storage by external events, connect
momentary contact events to the TRIGGER + GND connector.
8. Switch power switch to on.
10-28 VDC
7-20 VAC
500 MA
12 CHANNEL TERMOCOUPLE SCANNER
PARALLEL PRINTER
TRIGGER
+ GND
OUT/LINK
RS232
MODEL ####-##
Mfg. By Barnant Company
Barrington, IL 60010-2392
USA
1
7
2
8
3
9
4
10
5
11
6
12
PC/IN
1
8256 4 7
2
3
Front panel displays and controls
1 STORE button
°F
MENU
EXIT
.
+-
ALARM
1
STORE2 LOG
1
STORE
1
1 STORE button
Push to store one record cycle of the current set of readings in memory.
(Same as LOG, except only one record is stored.)
When a numerical entry is required and the NUM icon is on, push to
enter a ‘1’.
3
RECALL
4
PRINT
5
MAX
6
MIN
ab
7
AVG
8
HOLD9SCAN
0
CLEAR
°F
STORE
The word “STORE” a and the record number being stored b appear in
the display for about 3 seconds. Then the display returns to normal.
c
°F
4
STORE
“STORE” c appears, and remains in the display when one or more record
cycles are in storage (STORE and/or LOG).
Use to save a particular data record.
• A record includes readings from all 12 channels plus the time and
date.
• Up to 4,680 records may be stored. Memory is shared with LOG.
When no more data can be stored the display reads “STORE
FULL”.
• To clear (erase) stored records, push CLEAR, then push STORE.
“STORE” disappears from the display.
13
Front panel displa ys and controls continued
2 LOG button
°F
MENU
EXIT
.
+-
ALARM
1
STORE2 LOG
2
2
LOG
2 LOG button
Push to log record cycles as they are read. (Same as STORE, only
continues automatically.)
When a numerical entry is required and the NUM icon is on, push to
enter a ‘2’.
Push again to turn logging off.
3
RECALL
4
PRINT
5
MAX
6
MIN
7
AVG
8
HOLD9SCAN
0
CLEAR
°F
4
LOG
a
The word “LOG” a appears and remains in the display while records are
being logged.
“STORE” appears, and remains, in the display when one or more records
are in storage.
Use to save a particular set of data records.
• Readings from all 12 channels are logged.
• How often records are logged is set using the MENU - LOG
procedure, page 37, which may be different from the scan rate.
• The time and date of the reading is logged.
• Up to 4,680 records may be logged. Memory is shared with the
STORE function. When no more data can be stored the display
reads “LOG FULL”.
• To clear (erase) stored records, push CLEAR, then push LOG.
“STORE” will disappear from the display.
14
Front panel displa ys and controls continued
3 RECALL button
°F
MENU
EXIT
.
+-
ALARM
1
STORE2 LOG
3
RECALL
3 RECALL button
Push to recall stored (STORE or LOG) data.
When a numerical entry is required and the NUM icon is on, push to
enter a ‘3’.
• “RECALL” appears and remains in the display during recall.
• The LOG or STORE record number and time of channel 1 are
displayed first.
3
3
RECALL
4
PRINT
5
MAX
6
MIN
7
AVG
8
HOLD9SCAN
0
CLEAR
1
STORE RECALL
Push RECALL again to display the temperature.
1
STORE RECALL
Push RECALL again to display the date.
1
STORE RECALL
°F
(continued on next page)
15
Front panel displa ys and controls continued
3 RECALL button continued
4 PRINT button
°F
MENU
EXIT
.
+-
ALARM
1
STORE2 LOG
3
3 RECALL button continued
• Any time during RECALL push the Up-Down arrow keys to scroll
through the stored records.
• Any time during RECALL push the Left-Right arrow keys to scroll
through the channels.
• To exit RECALL push EXIT.
4
PRINT
3
RECALL
4
PRINT
4
5
MAX
6
MIN
7
AVG
8
HOLD9SCAN
0
CLEAR
4 PRINT button
Push to print on the printer attached to the PRINTER port. Push again to
stop printing.
When a numerical entry is required and the NUM icon is on, push to
enter a ‘4’.
• “PRINT” appears and remains in the display.
• Records are printed at intervals set in the MENU.
See MENU - How to adjust the print rate, see page 36.
• Push PRINT again to turn off printing.
Example printout:
11:59:48 CH 1: 72.9 CH 2: 75.7 CH 3: UNDER CH 4: 74.6
04/24/99 CH 5: 74.5 CH 6: 74.5 CH 7: 76.0 CH 8: 74.5
CH 9: 74.7 CH 10: 74.1 CH 11: 73.8 CH 12: 73.7
16
Front panel displays and controls continued
5 MAX button
°F
MENU
EXIT
.
+-
ALARM
1
STORE2 LOG
5
MAX
5 MAX button
Push to display the maximum temperature logged for each channel. The
display continues to scan channels.
When a numerical entry is required and the NUM icon is on, push to
enter a ‘5’.
3
RECALL
4
PRINT
5
5
MAX
6
MIN
7
AVG
8
HOLD9SCAN
0
CLEAR
°F
2
MAX
•“MAX” appears and remains in the display.
• The time and maximum reading for a channel are displayed (since
power up or last cleared).
• Push MAX again to switch between the time and the date.
• Use Left-Right arrow keys to stop scanning and to choose the
channel whose maximum value is displayed. Push SCAN to return
to scanning channels while remaining in MAX.
• Push MIN to switch the display to the minimum logged value of the
displayed channel.
• Push EXIT to exit.
17
Front panel displa ys and controls continued
6 MIN button
°F
MENU
EXIT
.
+-
ALARM
1
STORE2 LOG
6
MIN
6 MIN button
Push to display the minimum temperature logged for each channel. The
display continues to scan channels.
When a numerical entry is required and the NUM icon is on, push to
enter a ‘6’.
3
RECALL
4
PRINT
5
MAX
6
MIN
7
AVG
8
HOLD9SCAN
6
°F
0
CLEAR
2
MIN
•“MIN” appears and remains in the display.
• The time and minimum reading for a channel are displayed (since
power up or last cleared).
• Push MIN again to switch between the time and the date.
• Use Left-Right arrow keys to stop scanning and to choose the
channel whose minimum value is displayed. Push and release
SCAN to return to scanning channels while remaining in MIN.
• Push MAX to switch the display to the maximum logged value of
the displayed channel.
• Push EXIT to exit.
18
Front panel displays and controls continued
7 AVG button
8 HOLD button
°F
MENU
EXIT
.
+-
ALARM
1
STORE2 LOG
7
AVG
7 AVG button
Push to display the average temperature for each channel and the
number of readings that are being averaged. The display continues to
scan channels.
When a numerical entry is required and the NUM icon is on, push to
enter a ‘7’.
3
RECALL
5
AVG
4
PRINT
5
MAX
6
MIN
7
7
AVG
8
HOLD9SCAN
8
°F
0
CLEAR
•“AVG” appears and remains in the display.
• Readings from when the instrument was last powered up or
cleared are averaged.
• Opened channel readings are not averaged.
• Use Left-Right arrow keys to stop scanning and to choose the
channel whose average is displayed. Push SCAN to return to
scanning channels while remaining in AVG.
• Push AVG again to exit.
8
HOLD
8 HOLD button
Push to hold the current record in display.
When a numerical entry is required, and the NUM icon is on, push to
enter an ‘8’.
•“HOLD” appears and remains in the display.
• Channel scanning, logging, printing continue normally but the
display remains.
• Push HOLD or EXIT to exit.
19
Front panel displa ys and controls continued
9 SCAN button
0 CLEAR button
°F
MENU
EXIT
.
+-
ALARM
1
STORE2 LOG
9
SCAN
9 SCAN button
Push to start a channel scan.
When a numerical entry is required and the NUM icon is on, push to
enter a ‘9’.
• Each channel is displayed for three seconds.
• Use to return to scanning after scanning is stopped by using the
Left-Right arrow keys.
• Causes an immediate scan.
0
CLEAR
3
RECALL
4
PRINT
5
MAX
6
MIN
7
AVG
8
HOLD9SCAN
9
0
CLEAR
0
0 CLEAR button
Push CLEAR, then push AVG, ALARM, MAX, MIN, STORE or LOG to
clear that value.
When a numerical entry is required and the NUM icon is on, push to
enter a ‘0’.
• CLEAR - AVG erases the 12-Channel record containing the
average temperature from memory.
• CLEAR - ALARM turns the alarm buzzer off, all alarm conditions,
error messages, and temperature out of range alarms. Normally
push ALARM when an alarm occurs, that stops the alarm buzzer
and checks the alarm condition.
• CLEAR - MAX erases the 12-Channel record containing the
maximum temperature from memory.
• CLEAR - MIN erases the 12-Channel record containing the minimum temperature from memory.
• CLEAR - STORE erases the 12-Channel records that have been
logged or stored in memory (= CLEAR - LOG).
• CLEAR - LOG erases the 12-Channel records that have been
logged or stored in memory (= CLEAR - STORE).
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