RKC INSTRUMENT DP-350 User manual

‑1‑
HANDY THERMOMETER
DP-350
INSTRUCTION MANUAL
IM350DP01-E2
Thank you for purchasing our "DP-350".
This manual describes how to use "DP-350". Prior to using
the thermometer, please carefully read this manual and fully
understand the contents.
Keep this manual safely for future reference as required.
The contents of this manual may be subject to change
●without prior notice.
The contents of this manual are copy righted;
●all rights are reserved by RKC INSTRUMENT INC.
It is prohibited to reprint or reproduce the whole or
a part of this manual without the prior of RKC
INSTRUMENT INC.
"D " and this manual are manufactured and
●P-350
prepared under strict quality control before delivery.
However, if any problems arise, please contact us
directly or your nearest our sales agent.
-
●RKC assumes no responsibility for any of the follow
ing damages which the user or third party may suffer.
Damage incurred as a result of using this product.
①be
②Damage caused by product failure which cannot
predicted by RKC.
Other indirect damages.
③
MMARKING CAUTIONS
For safe operation of "DP-350", the following "Signal
Words and Symbol Marks" are used in this manual.
〈〉
Signal Words
WARNING
Where there are possible dangers such as electric shock,
fire (burns), etc. which could cause loss of life or injury,
precautions to avoid such dangers are described.
CAUTION
These describe precautions to be taken if unit damage
may result if operating procedures are not strictly
followed.
NOTE
Extra notes or precautions are added to operating
procedures and explanations.
〈〉
Symbol Marks
This mark is used when great care is needed:especially for safety.
: This mark is used to add extra notes, precautions＊or supplementary explanations to table and figures.
Never use this thermometer for medical equipment.
●
Never disassemble or modify this thermometer.
●Electric shock, burning or injury may result.
Do not use this thermometer at a location where
●water may be splashed.
This thermometer is not waterproof construction.
Do not use this thermometer at a location where
●chemicals or solvent may be splashed.
The case may be deformed or damaged.
Do not use this thermometer in a high-temperature
●(more than 50 ) or low-temperature (less than
℃
0 ) environment.
℃
The thermometer may not normally function.
In addition, the case may be deformed or damaged.
Remove the batteries if this thermometer is not
●used for a long time.
Otherwise, the thermometer may be damaged due to
battery-solution leakage.
Do not use any sensor or batteries other than those
●specified.
Otherwise, the thermometer may be damaged.
Do not drop this thermometer nor apply strong
●impact to the thermometer.
Otherwise, the thermometer may be damaged.
1. NAME OF PARTS
Mainframe
■
Accessories
Dry batteries 1.5 V [R6P type] (2 pcs.)
●
INSTRUCTION MANUAL [IM350DP01E2] (1 copy)
●

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Display Screen
■
*The above figure shows all of the characters, but may
differ from the actual display.
2. BEFORE OPERATION
2.1 Preparation
Loading batteries
①
Remove the battery cover at the rear of the mainframe, then
load dry batteries* (attached as accessory or equal) in the
direction indicated by the mark in the box.
Then, close the battery cover.
*Nochargingbatteriescanbeused.
Connect the temperature sensor
②
Connect the temperature sensor to the connector at the top
of the mainframe.
2.2 Power ON/OFF
Power ON
Press the POWER key. The following displays appear in order.
Display of user setting details
Power OFF
Pressing the POWER key again turns off the power.
NOTE
When the automatic power-OFF function is used,
●the power is automatically turned off if the preset time is
over. (Value set prior to factory shipment: 3 min.)
3. OPERATION
This thermometer is provided with "Measured value display
mode" in which measured temperature is displayed and -
"User setting mode" in which the setting relating to the func
tion or action ca be changed.
3.1 Measured Value Display Mode
Temperature display screen (Normal display)
Display range:
℃
-200 to 1200
-328 to 1999™
-199.9 to 199.9 ™(Resolution of 0.1)
℃/
*The display resolution and unit can be changed in
"User setting mode".
Measured Value Hold Function
■
This function is used to display measured value in succession
by pressing the HOLD key during measurement.
Press the HOLD key. "HOLD" is
displayed, and the measured value at
this time is held.
*Pressing the HOLD key again can
release the hold function.
NOTE
Even if the power is turned off in the HOLD state, the
●hold data (measured value) is held. If the power is turned
on again, the thermometer starts from the HOLD state.
However, if the batteries are replaced, the hold data and
state are released.
Peak Hold & Bottom Hold Functions
■
This function is used to always store, then display the maxi-
mum or minimum measured value while following up mea-
sured value changes.
Continue to press the HOLD key for
5 sec. "HOLD" flashes start the hold
action.
*Pressing the HOLD key again can
release the hold function.
NOTES
The peak/bottom hold function can be selected in "User
●setting mode".
(Value set prior to factory shipment: Peak hold)
When the sensor is broken or removed during measure-
●ment, the peak hold (or bottom hold) function is released.

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(Fig.) Peak hold action description
(Fig.) Bottom hold action description
Automatic Power Off Function
■
This function is used to automatically turn off the power after
a lapse of 3 min. or 30 min. following power ON.
The automatic power-off function can be set in "User setting
mode". (This function can also be released.)
3.2 User Setting Mode
Entry into/exit from "User setting mode"
■
Entryinto"Usersettingmode"
Press the POWER key while
pressing the HOLD key.
The following screens appear.
Release the POWER key.
However, continue to press the
HOLD key.
Continue to press the HOLD key
until the following screen
appears.
Release the HOLD key.
The " / ™" selection appears in
℃
"User setting mode".
NOTE
It is impossible to enter "User setting mode" from
●
"Measured value display mode".
Exit from "User setting mode"
The power is automatically turned off after a lapse of approx.
3 min. following the thermometer set to "User setting mode"
regardless of the automatic power-off function.
(Finish the setting within 3 min.)
In addition, "User setting mode" can be terminated by
changing the thermometer to "Measured value display mode".
In this case, "User setting mode" can be changed to
"Measured value display mode" from any screen by pressing
the HOLD key for more than 5 sec.
Details of Screen in "User setting mode"
■
Select each screen by pressing the HOLD key, then select
the setting details by pressing the POWER key. The details
thus set are established just when the next setting screen is
selected by the HOLD key.
*Each display enclosed with the thick rectangle ( )
shows that set prior to factory shipment.
NOTE
As for the contents of the setting at "User setting mode",
●
the setting data before the power-off and the setting data
just before the switching to the "Measured value display
mode" are held.
These data items are stored in the nonvolatile RAM.

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4. TROUBLESHOOTING
For inquiries, repairs or replacement resulting from cause other
than those described below, please contact your nearest RKC
sales office or sales agent where you bought the thermometer.
Not normally operated
Probable cause Remedy
The sensor is The sensor must be repaired or
disconnected. replaced.
Contact your nearest RKC sales
office or sales agent.
The specified sensor Uses the type K thermocouple
is not used. sensor (manufactured by RKC).
The sensor is loosely Firmly insert the sensor in the
connected. specified location.
The low-voltage dry Replace the two dry batteries
batteries are used. (R6P type, 1.5V) with new ones.
Turn off the power during dry
battery replacement.
The thermometer is Keep the thermometer away from
affected by strong the noise generation source, then
electromagnetic noise. take the following measures.
(CPU overrun) Remove the batteries.
①
Load new batteries after a lapse
②
·No key operation is of more than 10 sec.
accepted. Press the POWER key to turn
③
on the power.
·The display does not
change. If the thermometer does not
operate normally even after the
above measures are taken, contact
your nearest RKC sales office or
sales agent.
Any of the following displays appears
Display Remedy
Battery alarm Battery life expires.
Replace the two dry batteries
(R6P type, 1.5V) with new ones.
Turn off the power during dry
battery replacement.
Burnout This display flashes when the
input is disconnected.
Check whether the sensor is
firmly connected or it does not
fail.
Out-of input range This display flashes when the
input exceeds its input range.
Check whether the sensor is
firmly connected or it does not
(High limit) fail.
Out-of input range
(Low limit)
5. SPECIFICATIONS
Model No. DP-350C
Input type Thermocouple type K (JIS/IEC)
Influence of external Approx. 0.1μV/Ω
resistance
℃
Measuring range -200 to 1200 ﾟＦ
-328 to 1999
-199.9 to 199.9 / *
℃ﾟＦ
*Measuring range with the resolution
of 0.1 / .
℃ﾟＦ
The resolution out of this range is
1/ .
℃ﾟＦ
Sampling cycle Approx. 0.6 sec
Action of input break Upscale (B.O display lights)
Display LCD (TN type)
Display accuracy ±(0.2 % of indicated value+1 digit)
or Within±2 (4 )
℃ﾟＦ
*Less than the value whichever is
greater
℃
However, for less than -100
(-150 ): Within±4 (8 )
ﾟＦ ℃ ﾟＦ
Resolution 1 ( ) or 0.1 ( )
℃ﾟＦ ℃ﾟＦ
Power supply Dry batteries (1.5 V, Type R6P ),
2pcs.
Battery life Approx. 400 hours
(Total of operating hours)
Power consumption 5 mV (Mean value)
℃ﾟＦ）
Allowable ambient Operating: 0 to 50 (32 to 122
temperature *Display contrast warranty range:
5 to 40 (41 to 104 )
℃ﾟＦ
℃
Storage: -20 to +50
Allowable ambient Operating: 45 to 85 % RH
humidity Storage: 95 % RH or less (MEA-25)
Ambient operating Free from no corrosive gases,
atmosphere no large amount of dust and
a splash of water.
Weight Approx. 140 g
(Including dry batteries)
Dimensions 145 (H)×52 (W)×25 (T) mm
Accessories Dry batteries (Type R6P ) , 2 pcs.
Option Softcase (Sold separately)
MAR.'97 IM350DP01E2