readings and stops all further measurements. Press the
“HOLD” key again to cancel HOLD mode causing
thermometer to resume taking measurements. In the
MIN/MAX recording mode, press “HOLD” key to stop
the recording. Press “HOLD” key again to resume re-
cording. (Previously recorded read are not erased).
9. “SET” Mode (Relative value set, Date set,
Time set and Hi/Lo Limits value set)
9.1 REL SET
Press “SET” key to enter REL setting mode (Press
“ENTER” key can escape relative values set mode), and
the “= = = =.=” is displayed in main display. Relative
value is entered via overlay numbers, then press overlay
“ENTER” key, stored the relative value, enter Data/
Time set mode.
9.2 Date/Time SET
In the Data setting mode, (press “ENTER” key can
escape Date set mode), “= = = = = =” is displayed in
third display. Date(years, month, day) value is entered
via overlay numbers, then press overlay “ENTER” key.
When the user inputs(years, month and day) in order,
and then press “ENTER” key to enter into the time set-
ting.
In the time setting mode, (Press “ENTER” key can
escape Time set mode) “= = = = = =” is displayed in
third display. Time (hours, minutes, seconds) value is
entered via overlay numbers, then press overlay
“ENTER” key. When the user inputs(hours, minutes
and seconds), and then press “ENTER” key to enter
“Hi/Lo LIMITS” setting mode.
9.3 Hi Limit SET
In the Hi Limit value setting mode, (Press “ENTER”
key can escape Hi Limit value set mode), “= = = =.=” is
displayed in main display, Hi Limit value is entered via
overlay numbers, then press overlay “ENTER” key,
stored the Hi Limit value, enter Lo Limit value set
mode.
9.4 Lo Limit SET
In the Lo Limits setting mode, (Press “ENTER” key
can escape Lo Limit value set mode). “= = = =.=” is
displayed in main display, Lo Limit value is entered via
overlay numbers, then press overlay “ENTER” key,
stored the Lo Limit value and exit SET mode.
10. “T1 T2 T1-T2” Second display Input Selection
The input selection indicates which input is selected
for second display; T1 probe, T2 probe or the difference
between the two probes (T1-T2), when the thermometer
is turned on, it is set to T2 input can select alternate of
probe by second display Pt385/Pt3926 key switch.
11. “TYPE” (Pt385/Pt3926) Second display Input
RTD Probe Select
The “TYPE” key switches the T2 input to select the
Pt385 or Pt3926 or User Liner RTD probe as input
when second display input selected T2. It is invalid for
the selection of parameters when the second display se-
lects T1-T2. When the thermometer is turned on, it is set
to the probe selected that was in use when the ther-
mometer was last turned off. Switch flow: Pt385,
Pt3926, User Linear.
(*)User Linear please refer section 16.
12. “Hi/Lo LIMITS” Mode(only Main display)
Press “Hi/Lo LIMITS” key to enter the Hi/Lo Limits
comparative mode. When the input temperature value
exceed the Hi or Lo Limits value, the beeper emits a
continuous or pulse tone. Press “Hi/Lo LIMITS” key
again to exit the Hi/Lo Limits mode.
13. Data logger Operation
z
Single
log
Press the “HOLD” key to enter the Data Hold mode,
the “HOLD” annunciator is displayed. Then press
“SET” key, save hold data to single data memory.
And LCD show “S-xx”, and the “xx” is the location
on the single data memory. Then resume Hold func-
tion.
z
Multiple
log
Press the “HOLD” key to enter the Data Hold mode,
the “HOLD” annunciator is displayed. Than press
“MAX/MIN” key, starting the multiple log. LCD
show “L-xx”, and the “xx” is the location on the mul-
tiple data memory. When “RECORD” flashes the
meter start saving data into memory. Both “RECORD
& HOLD flashing that means entering key delay.
Wait the HOLD con stop flashing, which means en-
tering data collecting. Key delay setting please refer
to software operation for more detail.
Press “MAX/MIN” key again to exit the Multiple log
mode. LCD show “SPxx”, that “xx” is the location on
the multiple data memory. If battery is low, that will
stop automatically.
z
Data download
Data download by PC. Please refer to the PC soft-
ware document.
z
Erase logger data
Pressing “MAX/MIN” key and “ ” power key for-
more than 6 seconds into the memory erasing mode
and LCD shows “CLr”. Pressing “Hi/Lo” key for
more than 2 seconds then erase memory. When mem-
ory is clean, the display will show “End”. And the
meter will shut down about one second, which the
memory is complete.
14. User-Linear table
Please refer to the PC software document.
15. User calibration
In the shut-down mode, press “ ” key and “
” key
for more than 6 seconds then the third display(tower
right display), will show “CAL 2”. Which means en-
tering the user calibration mode. Under this mode in-
serts the calibrated 0
Ω
resistor T1 socket, and then the
calibrated 383
Ω
into Y2 socket. And press “Hi/Lo”
Limits key to complete the calibration, the meter emits
a beep then LCD shows “End”. The meter will shut
down after one second. To cancel the user calibration
is to press the second display “T1/T2/T1-T2” key, and
the LCD will show “Def” after one second the meter
will shut down to restore the factory default.
Connection
RTD Probe Connection
Temperature & Resistance Table
TEMPERATURE VS RESISTANCE
TABLE(ITS90)
°C Pt385
Pt3926
-200°C 18.521
Ω
16.996
Ω
-100°C 60.256
Ω
59.479
Ω
0°C 100.000
Ω
100.000
Ω
100°C 138.505
Ω
139.272
Ω
200°C 175.856
Ω
177.362
Ω
300°C 212.052
Ω
214.275
Ω
400°C 247.092
Ω
250.018
Ω
500°C 280.977
Ω
284.591
Ω
600°C 313.708
Ω
317.994
Ω
700°C 345.280
Ω
-
800°C 375.700
Ω
-
OPERATOR MAINTENANCE
WARNING
To avoid possible electrical shock, disconnect the
thermocouple connectors from the thermometer before
removing the cover.
Battery Replacement
1. Power is supplied by 4pcs 1.5V (SIZE AAA) UM-4
R03.
2. The “
” appears on the LCD display when replace-
ment is needed. To replace battery remove screw from
back of meter and lift off the battery cover.
3. Remove the battery from battery contacts and replace.
4. When not use for long time remove battery.
5. Don’t keep in place with high Temp, or high humidity.
Cleaning
Periodically wipe the case with a damp cloth and deter-
gent, do not use abrasives or solvents.
*Software operation manual is on the software disk.
V1. 110507
