2
Avoid severe mechanical shock or vibration and extreme temperature.
To avoid possible corrosion from leaking batteries, remove the batteries if discharged, or when the
unit is not in use for an extended period.
2. INTRODUCTION
2.1 Inspection
Examine the shipping carton for any sign of damage. Inspect the unit and any accessories for
damage. If there is any damage then consult your distributor immediately.
2.2 Description
The DTL84 has the following functions and features:
Four channel inputs
Selectable thermocouple type (K, J, E, T, N, R, S)
Differential
temperature
measurement
Temperature
alarm
function
Fast response and sampling rate
Instant recall function
Adjustable auto power off
Bluetooth connection to PC or mobile device
iOS & Android APP available to download from APP store
USB PC interface with Windows software included.
2.3 Accessories
The DTL84 comes with the following accessories:
2 x K-type thermocouples
Bluetooth
adaptor
4 x 1.5V AAA LR03 batteries
DTL84 software CD
Micro USB cable
Storage
case
Instructions
2.4 Battery Installation
Refer to Section 6.1 (Battery Replacement).
2.5 Bluetooth Adaptor Installation
Refer to Section 6.2 (Bluetooth Adaptor Installation).
3
3. OPERATION
3.1 Description of Press Buttons and DTL84 Elements
1
Thermocouple input sockets
2
LCD display
3
Turns the DTL84 on/off
4
Turns the backlight on/off
5
W
MIN
MAX
AVG
Selects max, min or average readings
6
W
HOLD
Selects the data hold function
7
°
C
°
F
W
Selects the temperature scale
8
REC
W
Starts/stops the record function
9
RECALL
Recalls saved readings
10
SET
Enters/exits Set-up function
11
MEM
W
Saves readings to the memory
12
USB interface
13
Bluetooth adaptor
14
Bluetooth adaptor compartment
15
Tilt stand
16
Battery compartment
4
3.2 Description of LCD symbols
Indicates low battery
MIN
Minimum recorded value is displayed
MAX
Maximum recorded value is displayed
AVG
Average reading is displayed
SET
Setup option indicator
Auto power off is active
REC
Indicates recording is active
FULL
Memory full indicator
MEM
88
Indicates memory location of stored data
RECALL
88
Indicates memory location when recalling stored data
TYPE
KJET
Indicates selected thermocouple type
T1 T2 T3 T4
Temperature channel
T1-T2
T1-T2 differential temperature mode selected
ALARM
Indicates temperature alarm selected
Hi
Indicates high temperature alarm tripped
Lo
Indicates low temperature alarm tripped
OFFSET
Probe error compensation
°
C
°
F
Indicates temperature scale
HOLD
Display hold mode is active
n
N-type thermocouple is selected
r
R-type thermocouple is selected
S
S-type thermocouple is selected
Bluetooth pairing/standby
Bluetooth connected
3.3 Low Battery Indication
If the
symbol is displayed, the battery needs replacing as measurement accuracy can no
longer be guaranteed (See section 6.1 Battery Replacement).
5
3.4 Power On/Off
Press
to power on the meter. Press and hold
for 3 seconds to power off.
3.5 Backlight
Press
to turn on the display backlight. Press
again to turn off the backlight.
It will automatically turn off after 30 seconds if there is no further operation of the meter.
3.6 Data Hold
To hold displayed readings, press
W
HOLD
The HOLD symbol will be displayed.
Press again to exit the Data-Hold mode.
Note:
When Data-Hold mode is selected the
W
MIN
MAX
AVG
°
C
°
F
W
RECALL
SET
buttons are disabled.
3.7 Record Function
Measurement data recorded at set time intervals can be saved to the internal memory. Refer to 4.4
(Setting Data Recording Interval Time) to set the required time interval.
Press
REC
W
to start recording data. The
REC
symbol will be displayed.
To stop recording, press
REC
W
again.
The recorded data can be downloaded to a PC using the DTL84 software.
Note:
During recording, the
°
C
°
F
W
and
SET
buttons are disabled so any required settings need to be
selected before starting the data logger function.
When the memory is full (32,000 results), the "
FULL
" symbol will flash on the LCD. The data
logger function will stop.
When the battery power is low, the
symbol appears on the screen and the data logger
function will not start. If the battery is running low during data logging, it will stop recording
automatically.
3.8 Memory Function
Press
MEM
W
to save the current displayed temperature readings to memory. The
MEM
symbol and
the number of the memory location will appear on the screen for 2 seconds.
Press
MEM
W
again to store further sets of results.
The memory has 0-99 locations.
3.9 Recalling Saved Results
Press
RECALL
to recall saved results. The
RECALL
symbol and the number of the last used memory
location will be displayed.
The time the data was save will be displayed in hours, mins, secs for 2 seconds before the saved
temperature readings are displayed.
Press the arrow keys
W
HOLD
REC
W
W
MIN
MAX
AVG
°
C
°
F
W
t
o select the required memory location.
Press
RECALL
or
to exit RECALL mode.
