OneTemp protech QM1601 User manual

Thermocouple Thermometer
QM1601
User Manual
INTRODUCTION
This instrument is a portable 31/2digit.,
compact-sized digital thermometer designed to
use external K-type thermocouple as temperature
sensor. Temperature indication follows National
Bureau of Standards and IEC584
temperature/voltage tables for K-type
thermocouples. two K-type thermocouples is
supplied with the thermometer.
SAFETY INFORMATION
It is recommended that you read the safety and
operation instructions before using the thermometer.
WARNING
TO AVOID ELECTRICAL SHOCK. DO NTO
USE THIS INSTRUMENT WHEN VOLTAGES
AT T HE M E A S U R E M E N T S U R FA C E E X C E E D
24V AC OR 60V DC.
WARNING
TO AVOID DAMAGE OR BURNS. DO NOT
MAKE TEMPERATURE MEASUREMENTS IN
MICROWAVE OVENS.
CAUTION
Repeated sharp flexing can break the
thermocouple leads. To prolong lead life, avoid
sharp bends in the leads, especially near the
connector.
The symbol on the instrument indicates that
the operator must refer to an explanation in this
manual.
SPECIFICATIONS ELECTRICAL
Temperature Scale:
Celsius (℃), Fahrenheit (℉) user-selectble
Measurement Range:
-50℃to 1300℃, -58℉to 2000℉
Resolution: 1℃or 1℉, 0.1℃or 0.1℉
Accuracy:
Accuracy is specified for operating temperatures
over the range of 18℃to 28℃(64℉to 82℉), for l
year, not including thermocouple error.
±2℃---------------------- -50℃to 0℃
±4℉---------------------- -58℉to 32℉
±(0.5% rdg+1℃)-------- 0℃to 1000℃
±(0.8% rdg+1℃)-------- 1000℃to 1300℃
±(0.5% rdg+2℉)-------- 32℉to 2000℉
Temp erature Coefficient:
0.1 times the applicable accuracy specification
per ℃from 0℃to 18℃and 28℃to 50℃(32
℉to 64℉and 82℉to 122℉).
Input protection:
60V de or 24V rms ac maximum input voltage on
any combination of input pins.
Reading Rate: 2.5 times per second.
Input Connector:
Accepts standard miniature thermocouple connectors
(flat blades spaced 7.9mm, center to center).
ENVIRONMENTAL
Ambient Operating Range:
0℃to 50℃(32℉to 122℉)
Storage Temperature:
-20℃to 60℃(-4℉to 140℉)
Relative Humidity:
0% to 80% (0℃to 35℃) (32℉to 95℉)
0% to 70% (35℃to 50℃) (95℉to 122℉)
GENERAL
Display:
31/2digit liquid crystal display (LCD) with
maximum reading of 1999
Battery:
Standard 9V battery (NEDA 1604, IEC 6F22)
Dimensions:
162mm (H)×76mm(W)×38.5mm(D)
Weight: 210g
Supplied Probe:
4 foot type"K"thermocouple bead probe (Teflon
tape insulated).
Maximum insulation temperature 260℃(500℉)
Probe accuracy±2.2℃or ±0.75% of reading
(Whichever is greater) from 0°to 800℃
OPERATING INSTRUCTIONS
Selecting the Temperature Scale
Readings are displayed in either degrees Celsius
(℃), degrees Fahrenheit ( ℉).When the
thermometer is turned on, it is set to the
temperature scale that was in use when the
thermometer was last turned off. To change the
temperature scale, press the For℃or ℉key.

Single- Thermocouple Temperature Measurement
The thermometer displays the temperature of the
thermocouple that is connected to the selected
input. Press the T2 key to display the temperature
of the thermocouple connected to the T2 input.
Press the T1 key to display the temperature of the
thermocouple connected to the T1 input. The
input selection cursor indicates which input is
selected.
Differential Temperature Measurement
Differential temperature measurement is selected
by pressing the T1-T2 key. This causes the
thermometer to display the temperature difference
between the two thermocouples (the temperature
of thermocouple T1 minus the temperature of
thermocouple T2). The selection is indicated by
the input selection cursor.
Selecting the Display Resolution
The thermometer allows two choices of
resolution:
High resolution: 0.1℃or 0.1℉
Low resolution: 1℃or 1℉
OVERLOAD DISPLAY(1)
The digital display will indicate 1 when the input
exceeds the measurement range selected.
If measuring above199.9º, change the resolution
to 1 º. Be certain to seat the thermocouple
connector properly and that the leads are not
broken.
HOLD MODE
Pressing the HOLD key to enter the Data Hold
mode, the “HOLD” annunciator is displayed. When
HOLD mode is selected, the thermometer held the
present readings and stops all further
measurements.
Pressing the HOLD key again cancels HOLD mode,
causing the thermometer to resume taking
measyrements
.
MAX MODE
Pressing the MAX key to enter the MAX mode.
The thermometer then records and updates the
maximum values and the MAX annunciator
appears on the display.
Pressing the MAX key again to exit the MAX
recording mode.
In the MAX mode, press HOLD key to stop the
recording, press HOLD again to resume recording
BACKLIGHT MODE
Pressing the Backlight key to turn on the LCD
backlighting function. Pressing the Backlight key
again to turn off the LCD backlighting function.
OPERATOR MAINTENANCE
WARN ING
TO AV O I D P O S S I B L E E L E C T R I C A L S H O C K ,
DISCONNECT THE THERMOCOUPLE
CONNECTORS FROM THE THERMOMETER BEFORE
REMOVING THE COVER
BATTERY REPLACEMENT
The battery symbol appears on the lower
right of the LCD when the 9V battery needs to be
replaced.
Replace the 9V battery as follows:
1. Turn the meter off and disconnect the
temperature probe.
2. Remove the rubber holster that surrounds the
entire meter by pulling it over the top of the
meter.
3. Remove the small Phillips head screw on the
rear of the meter.
4. Open the battery compartment and replace
the 9V battery.
Re-assemble the meter before operating.