RS PRO RS-136 User manual

Instruction Manual
RS-136
Temperature Calibrator (RTD + TC)

Temperature Calibrator (RTD + TC) / EN
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03/27/2020 Version No. 1
EN 613 6-1 : 013
Please read the statement thoroughly to prevent injury or loss
o li e, and prevent damage to this product.
Earth (ground)
Con orms to relevant European Union
directives.
Do not dispose o this instrument as unsorted
municipal waste. Contact a quali ied
recycler or disposal.
Please remove all the test leads be ore
per orming maintenance, cleaning and
battery rep lacement, etc.

Temperature Calibrator (RTD + TC) / EN
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03/27/2020 Version No. 1
Table o Contents
I.
FEATURES ................................................................................................................ 1
II. PANEL DESCRIPTION ................................................................................................ 2
III. OPERATION ................................................................................................................ 5
3.1 S OURCE RTD SIGNALS (4W, 3W, W) .................................................................... 5
3. S OURCE T HERMOCOUPLE S IGNALS ......................................................................... 8
3.3 M EASURE RTD T EMPERATURE AND R ESISTANCE ................................................. 10
3.4 M EASURE T HERMOCOUPLE T EMPERATURE ........................................................... 14
3.5 O PTIMAL OHM MEASUREMENT (4W, 3W, AND W) .............................................. 16
3.6 DC C URRENT CALIBRATION USING OHM MEASUREMENT SETUP (4, 3, AND W) 18
3.7 R AMP AND S TEP IN SOURCE MODE ..................................................................... 19
3.8 R EMOVE I NACCURACY CAUSED BY THE RESISTANCE OF TEST LEADS IN W........ 20
3.9 A UTO C ALIBRATION ................................................................................................ 23
IV. SETUP ........................................................................................................................ 24
4.1 S ELECT RTD TYPE OR RESISTANCE ....................................................................... 25
4. S ELECT TC TYPE ..................................................................................................... 25
4.3 S ELECT UNIT (℃ OR
℉) ...................................................................................... 26
4.4 E NTER THE VALUES OF C OLD J UNCTION C OMPENSATION .................................... 26
4.5 E NTER THE VALUES OF RTD 0% AND 100% ......................................................... 27
4.6 E NTER THE VALUES OF TC 0% AND 100% ............................................................ 27
4.7 A UTO -P OWER -O FF ................................................................................................. 28
4.8 R ESTORE F ACTORY S ETTINGS ................................................................................ 28
V. ELECTRICAL SPECIFICATIONS ............................................................................ 29
VI. GENERAL SPECIFICATIONS ................................................................................ 37
VII. BATTERY REPLACEMENT ................................................................................. 38
Limited Warranty ....................................................................................................... 39

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I. Features
1. High precision and combination o RTD and Thermocouple (TC)
calibration
. Source and measure 14 types o RTD and resistance
3. Source and measure 11 types o thermocouples (TC)
4. 4W, 3W, and 2W connections or RTD simulation and measurement
5. Current calibration o 4 ixed values (100μA, 250μA, 1mA, and 2mA)
6. ℃ and ℉ selectable
7. Accept wide range o excitation current (0.05mA to 5mA) or RTD
simulation
8. Individual Thermocouple cold junction compensation (CJC) or
simulation and measurement o thermocouples. CJC can be used to
ine tune temperature calibration.
9. Easy 0% and 100% setup and operation
10. Easy 25%▲ (up) and 25▼ (down) or temperature calibration.
11. Individual memory o 0% and 100% setup or di erent RTD types
and thermocouple types
1 . Auto step and auto ramp or easy linear calibration
13. Detection o too low or too high excitation current (LO or HI) rom the
measurement device
14. Warning o exceeding calibrator driving current (IEX)
15. Memory o last setup when power o
16. Easy numerical keypad or input
17. Dot Matrix LCD with backlight
18. Very low power consumption o 30mA with backlight o
19. 15 minutes smart auto-power-o . 15 minutes timer resets itsel when
any input changes
0. 2 minutes smart auto-backlight-o . 2 minutes timer resets itsel when
any input changes

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II. PANEL DESCRIPTION
1. ON/OFF button.
2. Backlight
3. SETUP button.
4. M/S button to select Measure or Source
5. Shi t button to select sub- unctions de ined or source. Or enable thermocouple

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detection (TCD) or the TC MEASURE mode. In the SETUP, press SHIFT
button to clear the ield or the new data entry.
6. Thermocouple (TC) input and output.
7. Sliding switch or selecting RTD connection 4W, 3W, 2W or thermocouple.
8. Auto step and auto ramp unction or source. Press Shi t irst to select.
9. O set unction to recalibrate calibrator’s o set value.
10. 25%▲(5):
In the SOURCE mode, press SHIFT then 25%▲, calibrator increases output
by 25% o prede ined span o 0% to 100%
In the SETUP, press ▲ to select previous item
25%▼(0):
In the SOURCE mode, press SHIFT then 25%▼, calibrator decreases output
by 25% o prede ined span o 0% to 100%.
In the SETUP, press ▼ to select next item
0 %◄ (7):
In the SOURCE mode, press SHIFT then 0%, calibrator outputs prede ined
0%.
In the SETUP, press ◄ to select the previous option o the item (e.g. RTD or
TC type).
100 %► (9):
In the SOURCE mode press SHIFT then 100%, calibrator outputs prede ined
100%.
In the SETUP, press ► to select the next option o the item (e.g. RTD or TC
type).

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LCD Display
1. Temperature in ℃ or ℉
2. Corresponding Ohm
3. RTD, Resistance or TC type
4. Battery capacity in % (e.g. 57%)
5. RTD connection (4W, 3W, or 2W)
6. SOURCE or MEASURE
7. Lo : Excitation current rom the measuring instrument is too low
Hi: Excitation current rom the measuring instrument is too high
8. IEX: Exceeding calibrator’s driving current
9. TC OK: In MEASURE mode, press SHIFT to enable Thermocouple
Detection (TCD). “TC OK” means no broken wire o thermocouple or
the thermocouple is connected.
TC OPEN: In MEASURE mode, press SHIFT to enable Thermocouple
Detection (TCD). “TC OPEN” means broken wire o thermocouple or
thermocouple is not connected.
10. The calibrator is calibrating itsel . Wait until it is done.

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III. OPERATION
3.1 Source RTD signals (4W, 3W, W)

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Step 1: Press M/S button to select SOURCE
Step 2: Move sliding switch to select RTD connection (4W, 3W, or 2W)
Step 3: Press SETUP button to select RTD type. Then press SETUP
button again to exit SETUP
Step 4: Enter value o temperature
Step 5: Connect the calibrator to the instrument under test as shown in
the Figure ollowing

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Note: For the SOURCE RTD 3W connection, the two sockets (LO and
sense LO) need to be shorted by the stackable black test leads with
banana plugs (provided). Then plug the test leads with prods into the
stackable test leads.

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3. Source Thermocouple Signals

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Step 1: Press M/S button to select SOURCE
Step 2: Move sliding switch to select TC (Thermocouple)
Step 3: Press SETUP button to select TC type. Then press SETUP
button again to exit SETUP
Step 4: Connect the calibrator to the thermometer under test as shown
in the Figure ollowing
Step 5: Enter value o temperature

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3.3 Measure RTD Temperature and Resistance

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Step 1: Press M/S button to select MEASURE
Step 2: Move sliding switch to select RTD connection (4W, 3W, or 2W)
Step 3: Press SETUP button to select RTD type. Then press SETUP
button again to exit SETUP
Step 4: Connect the calibrator to the RTD or resistance under test as
shown in the Figure ollowing
Step 5: Read value o temperature or resistance rom LCD

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Note: The inaccuracy caused by the test leads resistance is not included in the
source or measure accuracy.

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3.4 Measure Thermocouple Temperature

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Step 1: Press M/S button to select MEASURE
Step 2: Move sliding switch to select TC (Thermocouple)
Step 3: Press SETUP button to select TC type. Then press SETUP
again to exit SETUP
Step 4: Connect the calibrator to the thermocouple under test as
shown in the Figure ollowing
Step 5: Read the value o temperature rom LCD

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3.5 Optimal OHM measurement (4W, 3W, and W)
Step 1: Follow the steps stated in section 3.3 and select OHM in the setup.
The calibrator will automatically output optimal current or measurement o
resistance. Users can also press button 5 to enter manual mode and change
the output current (100μA, 250μA, 1mA, and 2mA).

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Step 2: I the other end is another calibrator connected to the calibrator. The
other calibrator might not be able to sense the current outputted rom the
calibrator. Users can press button 5 to enter manual mode and change the
output current. The symbol MAN will be displayed once button 5 is pressed.
Step 3: Press button 5 repeatedly to change the output current until the other
calibrator can sense it. The calibrator will circulate through 4 values o current
(100μA, 250μA, 1mA, and 2mA)
Note: The value o current is displayed at the upper right corner o LCD next
to the MAN symbol.