Tunix TT-07SP User manual

unix
Corporation
Instrument
Manual
Handheld High-Precision
Digital Thermometer
TT-07SP

Table of Contents
Overview........................................................................................... .2
Specifications..................................................................................... 4
Input Wiring and Notes.......................................................................8
Display Screen................................................................................. 11
Keypad Operation............................................................................ 13
Menu Settings.................................................................................. 18
Description of Menu Parameters...................................................... 20
Calibration........................................................................................ 23
Description of Prompt Information.................................................... 26
Accessories...................................................................................... 30
Optional Accessories....................................................................... 30

Overview
Handheld High-Precision Digital Thermometer, based on 24-bit A/D
converters and 16-bit MCU, features high precision, high stability, low power
consumption, multiple input types, multiple measurement results, easy operation,
etc.
When suitable sensors are matched, it can be widely used for handheld precise
temperature measurement and Ω/mV/mA precise measurement in production,
scientific research and labs. Its main characteristics are as follows:
Pt100, Pt1000, Cu50, Cu100, K, S, E, T, J, R, B, N, as well as Ω, mV, and mA signals.
There are three compensation modes for thermocouples, including internal
compensation, external compensation and manual(simulated) compensation.
Input types:
In addition to basic measurement values, the relative value, maximum value,minimum
value, average value, peak-peak value, standard deviation and sampling number can
also be measured at the same time.
Mathematical-statistical measurement:
The highest resolution is 0.001℃ (RTD :Resistance Temperature Detector) or 0.01℃
(K/E/J/T/N thermocouple).
6-digital display, resolution can be set:
Switchable among Ω or mV, ℃, ℉ and K.
Four display units for thermal resistances and thermocouples:
Customized start-up display:
Including math modes, resolution, display units and the reference junction
compensation modes.

Miscellaneous:
Clear LCD layout, white backlight,
Easy keypad operation and smart and exquisite appearance,
Upper limit alarm and lower limit alarm can be set, User calibration is provided,
Low power consumption; three AA alkaline batteries, 1,500 hours battery life(typical
value, backlight off ） .
Adjustable sampling rate and the filter action.
Sensor offset correction
Display freezing
Automatic backlight shut-off, automatic power shut-off and low battery voltage
detection.

Specification
Measurement Range and Accuracy

Specification
Notes:
1) Based on ITS-90 （ ITS: The International Temperature Scale); the environmental
condition: (23±5)℃, ≤85%RH; it should be put in the stable environmental conditions
for at least one hour, wait 5 minutes after start-up, with the menu parameters of
S_rAtE=1 and FILt=1, exclusive of sensor errors. The tolerance is 1.2Δ in case of
S_rAtE=2.
2) Using the method of “Calibration” in page 12 of this manual, the fixed error
component between sensor and thermometer can be eliminated.
3) The thermal resistance and thermocouple’s measurement range and tolerance
shown in other units (Ω, mV, ℉ and K) are equivalent to the above table.

(2) Resolution: The highest resolution:
(3) Stability of Indicating Values:
It is smaller than Δ/6 in a short period (10 minutes) and smaller than Δ/4 in a long
period (8 hours).
Notes:
1) The stability of indicating values means the fluctuation range of indicating values at a
stable input, and is defined as a half of the value the maximum value minus the
minimum value (i.e. a half of P-P value). The stability of indicating values is associated
with the input signal magnitude, S_rAtE value and FILt value.
2) Measurement condition: the instrument is placed in the environment with
7 stable temperature and humidity for 1 hour, waiting 5 minutes after start-up,
S_rAtE=1, FILt=1, MAN compensation mode adopted for thermocouple, and
80%FS stable signals as input

(4)Sampling Rate: The sampling rate is set by the menu parameter S_rAtE.
(5) Power Supply and Power Consumption: Three 1.5V AA batteries. The
operating current is no more than 1.5mA when the backlight is shut off, and
about 27mA when turned on.
(6) Conditions for Application Environment:
Ambient temperature : (0~50)℃,
Ambient humidity : ≦ 85%RH
Dimensions and Weight: 155 X 70 X 30 mm, about 0.25kg (batteries included).
Environment conditions to ensure accuracy:
Ambient temperature : (23±5)℃,
Ambient humidity : 30~85%RH,
and there is no obvious electromagnetic interference.

Input Wiring and Notes
1. Wiring for RTD and Ω type:
The 4-wire connection is adopted, which is shown as F1 in the above drawing.
Two wires on the left side of the plug are connected to one end of the RTD or
resistance, and two wires on the right side of the plug are connected to the other
end of the RTD or resistance.
Special Notes: the 4-wire connection plug cannot be used as USB interface
purpose. It cannot be plugged into any USB sockets of computers or other
devices so as to avoid damage

2. Wiring for DC mV signals:
Pure copper conductor wires, plugs, connection lugs should be used for
connection, which is shown as F2 in the above drawing. In order to minimize the
influence of thermoelectric potentials, the surface feculences should be eliminated timely.
The thermoelectric potentials for some materials and copper are as follows for reference.
With regard to thermocouple or mV signals, wait for at least 5 minutes after
the plug is inserted into the instrument, and start to measure after thermal
balance so as to reduce the impact of thermoelectric potential!
Wiring with the manual reference end compensation mode (MAN) or the external
reference end compensation mode (EXT): Compensation wires are used for connection
from the thermocouple to the constant temperature oven, and pure copper wires and
plugs are used for connection from the constant temperature oven to the instrument. With
regard to the external compensation mode (EXT), a four-wire Pt100 platinum resistance
is required to be inserted into the constant temperature oven, and a
four-wire plug is required to be connected to the RTD socket of the instrument,
which is shown as F4 in the above drawing.
Note 1: Insulation between the external wires of each socket should be ensured, or
the measurement results will be affected.
Note 2: If any signals exceeding 5V or 100mA are input, the instrument will be
damaged.

(1) REL/MAX/MIN/AVG/P-P/SN:
Mathematic function, which respectively the relative value, maximum value,
minimum value, average value, peak-peak value, standard deviation and
sampling number. The standard deviation and sampling number have the
same sign “SN”.
(2) LOWBAT:
This sign is displayed when the battery voltage is low;
(3) AUTOOFF:
The sign is displayed when the automatic shutdown is set.
(4) –T2/OFFSET:
“–T2” sign is shown when display is offset; “OFFSET” sign is shown when
sensor’s correction value OFFSEt is not equal to 0.
(5) HOLD:
Display hold
(6) mV / A / Ω / ℃ / ℉ / K:
Measurement units;
Display Screen

(7) 6-digital LCD display:
Measurement values or prompt information;
4. Measurement offset/ sensor offset12
(8) Pt100 / Pt1000 / Cu50 / Cu100 / K / J / T / S / R / E / N / B:
Type of RTD and thermocouples. The “type” of the Ω, mV and mA
functions is itself, so respectively use their display units Ω, mV and mA as
their function signs.
(9) INT/EXT/MAN:
Compensation modes for the thermocouple reference ends;
(10) LOAL/HIAL:
Indicates the lower limit or upper limit alarm.

Keys are divided into three types including the short keys, long keys andcombination keys.
Long keys or key combinations (keys should be pressed and hold for 2 seconds) are used
to realize the functions of Set, Cancel, RJ or Cal, and
short keys are used to realize other functions.
(1) Power Key: Power switch, the automatic shut-off function can be realized when the
menu parameter AutoFF is not equal to 0. That’s to say, automatic shut-off can be realized
when no key-press time is larger than or equal to the time set by AutoFF (unit: minute), and
automatic shut-off is canceled when AutoFF is equal to 0.
(2) Backlight Key: Backlight switch. The absolute value of the menu parameter Auto.b.L is
the backlight’s automatic shut-off time (second), and the backlight’s automatic shut-off
function is canceled in case of Auto.b.L=0. The positive and negative signs of Auto.b.L
indicate that if the buzzer sound for key-press and alarm exceeding the lower/upper limit is
allowed or not: buzzer sound is allowed when Auto.b.L is no less than zero, and buzzer
sound is not allowed when Auto.b.L is less than zero.
KeyPad Operation

(3) Key 1: in the measuring state, short press “Key 1” to switch display unit; press
“Key 1” and hold it for 2 seconds to realize the “Set” function and enter menu
settings. See “Menu Settings” at page 18 for details.
(4) Key 2:
1) In the measuring state, short press “Key 2” to select mathematic
measurement functions: The functions can be switched in the eight states of
“basic measurement values- REL-MAX-MIN-AVG- PP-s-n”. In which,
a) When no any “REL-MAX-MIN-AVG- PP-SN” signs appear, the value is
the current measurement value.
b) REL is relative measurement value. It is similar to “manual zeroing”,
subtracting the “reference value” from the current value, i.e. the REL value =
current measurement value xi –reference value. The “reference value” is the
measurement value in the beginning of star-up, or the measurement vale in
the beginning of altering input tyPE, or the measurement value in the
moment of pressing “Cancel”.
REL can be used to measure very small temperature differences and realize
the function of digital Beckmann thermometer.
c) MAX is the maximum measurement value. It is the maximum
measurement value since start-up (or after pressing “Cancel”).
d) MIN is the minimum measurement value. It is the minimum measurement value
since start-up (or after pressing “Cancel”).
e) AVG is the average measurement value. It is the average value since
start-up (or after pressing “Cancel”):

When the sampling number n exceeds 1 million times, the average value
calculation will be suspended and the displayed AVG value remain the same
f) P-P is the peak to peak value during measurement. It is equal to the peak
to peak value for the measurement results since start-up (or after pressing
“Cancel”), i.e. P-P=MAX - MIN.
g) SN is the standard deviation and sampling number, and s and n
respectively refer to the standard deviation and sampling number below. The
first displayed value of SN is the standard deviation, which is equal to the
measurement value standard deviation since start-up (or after pressing
“Cancel”):.
When the sampling number n exceeds 1 million times, the deviation value
calculation will be suspended and the displayed value remain the same.
h) The second displayed value of SN is the sampling number, which is equal
to the sampling number since start-up (or after pressing “Cancel”):
n≤999,999. n is shown as “OVER” in case of n≥1,000,000, which is a prompt that
the average value and the standard deviation are the measurement results up to
1,000,000 times.
Notes: When the sampling number exceeds 1 million times, the average
value, standard deviation and sampling number will be suspended and
remain the same, and the measurement for REL/MAX/MIN/P-P is still
progressing and is not subject to the sampling number.

2) In the measurement state, long press “Key 2” holding it for 2 seconds until
“――――――” is displayed in order to realize the clear (“Cancel”) function.
The function refers to taking the current measurement value as the “reference
value” for the new relative value, clearing all mathematic measurement results
and restarting all mathematic measurement.
3) In the menu state, press “Key 2” briefly to realize the function of “shift key”;
press “Key 2” and hold it for 2 seconds to realize the function of menu
backwards.
4) In the menu state, short press “Key 2 + Key 1” at the same time can also
realize the function of menu backwards.
5) In the calibration state, press “Key 2” to cancel (ESCAPE) the calibration
function, and then press “Key 4” to exit the calibration state.
6) In the measurement state, press “Key 2 + Key 4” and hold them for 2
seconds to calibrate internal compensation errors of thermocouple reference
ends.
(5) Key 3:
1) In the measurement state, press “Key 3” briefly to change the display resolution.
2) In the measurement state, long press “Key 3” for 2 seconds to select the compensation
modes for thermocouple reference ends.
a) INT is the internal compensation mode: see 3.(3) above for its wiring.
b) EXT is the external compensation mode: see 3.(4) above for its wiring.
c) MAN is manual compensation mode for the reference ends’ temperatures: see 3.(4)
above for its wiring, and the menu parameter mAn.tmP should be set to the temperature
of constant temperature oven.
3) In the calibration state, press “Key 3” to skip the current calibration point
(as well as other relevant calibration point) and enter the next calibration point.
4) In the menu parameter setting state, “Key 3” is the decrease key.

(6) Key 4:
1) In the measurement state, short press “Key 4” for “HOLD” function, which means that
the current measurement values and all mathematical measurement results remain
unchanged until “Key 4” is short pressed again to deactivate the “hold” state. When exiting
the menu, “HOLD” is canceled.
2) In the measurement state:
a) When the menu parameter CAL.Cod is equal to 808, pressing “Key 4” for long can be
used for user calibration, and long pressing “Key 2 + Key 4” can be used for calibration of
compensation errors of the thermocouple internal 18 (INT) reference ends.
b) When the menu parameter CAL.Cod is equal to 5600, long pressing “Key 4” restores
the factory calibration data and settings.
3) In the menu parameter setting state, “Key 4” is the increase key.

Menu Settings
Long press “Key 1” (i.e. SET key) for 2 seconds to enter the menu. Once “Set” key is short
pressed, the parameter name is displayed first, then if “Set” key is pressed again the
parameter value will be displayed which can be modified with the keys of . Long press “Key
1” to switch unit ℃ / ℉ / K for parameter mAn.tmP, lowEr.L, UPPEr.L. The set menu
parameters are saved when exiting the menu. The set parameters will not be saved in
case of low battery voltage (“LOWBAT”) or automatically exiting the menu without key-
press for 30 seconds.
The menu settings are as follows.

Menu Settings
(1) Input Signal Type – tyPE: There are corresponding signs for thermal resistances and
thermocouples. And the resistance /millivolt /milliampere ranges are signed with their units
Ω/mV/mA respectively. In which, both tyPE=0 and tyPE=1 mean Pt100, and the main
difference for the two types is that tyPE=0 is smaller measurement span but more stability
than tyPE=1.
(2) Sampling Rate - S_rAte: The sampling features low rate but high accuracy in case of
S_rAtE=0; the sampling features high rate but low accuracy in case of S_rAtE=2; thereby
S_rAtE=1 is always adopted.
(3) Filter Time Constant – FiLt: The larger FiLt will have the stronger on filter action,
however, the response will slower. FiLt can be set to 2 or 3 or commonly 1 in case of slow
input variable.
(4) Start-up Customization – ConFig: If the current mathematic measurementmode,
display unit, resolution and reference end compensation mode are expected
to be kept for each start-up in the future, then the menu parameter “ConFig” should be set
to 1, so that the current measurement and display forms can be saved after exiting the
menu (the ConFig return to zero automatically at the same time).
(5) Automatic Shut-off Time – AutoFF: Its value represents the automatic shut-off time
(minutes) in case of no key-press, and the function of automatic shut-off will be canceled
in case of AutoFF=0.
Description of Menu Parameters

(6)Automatic Backlight Shut-off Time - Auto.b.L: Its absolute value is the automatic backlight
shut-off time (second), the automatic backlight shut-off
function will be canceled in case of Auto.b.L=0, and the negative sign only means that the
buzzer sound for key-press and alarm is not allowed.
(7) Instrument Calibration Code - CAL.Cod: User calibration is allowed in case of
CAL.Cod=808; it will restore the factory calibration data and settings in case of
CAL.Cod=5600; detector error correction together with instrument is allowed in the case of
CAL.Cod=1~5
.
(8) Sensor Correction Value (Offset) - OFF.SEt: The measured value is translated in the
form of electric quantity value, i.e. xi=xi + OFF.SEt. Only the electric quantity value can be
used for setting.
(9) The manual setting value for reference end’s temperature - mAn.tmp: Set the menu
parameter mAn.tmp to the temperature value of the constant temperature oven in case of
adopting the MAN compensation mode.
When verify the indicating value errors for the thermocouple of the instrument, sometimes it
is inconvenient to use INT compensation mode, and the MAN compensation mode can be
used. With regard to the MAN compensation mode, use copper conductor wires to connect
the instrument and standard mV signal source, verify the basic indicating value errors, and
then verify the compensation errors of the interior (INT) reference ends. Finally, errors with
the INT compensation mode are the synthesis of the basic indicating value error and
compensation error.