Mastech MS7222 User manual

02
MS7222
0301
Introduction
RTD Cal ibrat or is a han dheld t ool for c alibr ating RTD
(Resistance Tempera ture De tecto r) tran smitt ers,
including most pulsed transmitters. It simulate s and
measures seven diff erent t ypes of RTDs, in units of
°C or °F. It also simulates and measures resistance
in units of ohms.
If the calibrator is damaged or something is mis sing,
contact the place of purchase immediately. Conta ct your
distributor for information about accessories .
04
RTD CALIBRATOR
OPERATING INSTRUCTION
Safety Information
05
To avoid p ossib le elec tric sh ock or pe rsona l injur y:
• Never apply more than 30 V between any two termina ls,
or between any terminal and earth ground.
Make sure the battery door is closed and latched
before you operate the calibrator.
Remove test leads from the calibrator before you open
the battery door.
Do not operate the calibrator if it is damaged.
Do not operate the calibrator around explosi ve gas,
vapor, or dust.
•
•
•
•
Internation al Symbols
Symbols
Refer to this instruction sheet for information
about this feature.
Meaning
Fuse
Conforms to European Union directives
Double insulated
Battery
Earth ground
Getting Acquainted With The Calibrator
1. The RTD typ e annun ciato rs show the selected
RTD typ e.
2. Show the measured or simulated value in degre es or
ohms. When OL appea rs, the v alue is o ut of ran ge.
3. It will lit when the battery is low.
4. INPUT will li t when me asuri ng an RTD or resistance.
5. OUTPUT will l it when s imula ting an RTD or resistance.
6. When an RTD typ e is sele cted, o ne of the se is lit t o
show the selected scale.
7. When measuring an RT D, one of t hese is l it to ind icate
a two-wire, three-wire, or four-wire configurat ion.
These a nnunc iator s are not u sed whe n simul ating a n
RTD or re sista nce (ou tput) .
8. POWER ON/OFF
9. Press to select input (measure) or output (simulat e)
mode.
10. INPUT/OUTPUT te rmina ls.
11. Pres s to scro ll up or do wn disp lay. Hold down to
scroll faster.
12. In simulate mode, press to step up or down 10° or
10 Ω. In measurement mode, press it to select a
two-wire, three-wire, or four-wire RTD i nput
configuration.
13. Press to toggle temperature scales between
Celsius and Fahrenheit.
14. Press to select a differen t RTD t ype. Wh en you
select the e type (ohms), displayed units are ohms,
not degrees.
°C/°F
RTD
TYPE
Auto Power Off function
In the process of measuring or simulating, if there is no
any action on the meter within 30 minutes, the meter will
be Auto Power Off . In auto p ower off sta tus to press the
key, the m eter wi ll powe r on. The auto p ower off
function will be cancelled such as following o perat ion:
1. Press the key to turn off the met er, if the m eter
power on.
2. Press and hold the key to turn on the meter.
3. The au to powe r off f uncti on will be cancelled.
4. To resum e the aut o power o ff fu nction, turn off the
meter and turn on it again, the auto power off fun ction
will be resumed.
CONTENT S
Introduction ........................................2
Safety Information ...............................2
Internation al Symbols................... .. .. .. .. .. 3
Getting Acq uainted
With The Calibrator . ............................3
Auto Power Off Function.. ................. .. .......5
Measuring an RT D or Resistance......... .......6
Simulate an RTD or Resistance.............. .....7
Specificati ons …...... ........... ......... ........... ...8
General Specifications …........ ....... ....... ....10
Maintenance …….......................................10
02
MS7222
RTD CALIBRATOR
RTD
TYPE °C/°F

0906 08 10 1 107 HYS006684
Specifications General Specifications
To simulate an RTD , proce ed as fol lows:
1. Press to turn on the power.
2. If the calibrator is in input mode (INPUT on th e
display), press “INPUT/OUTPUT” once. Make sure
the display shows OUTPUT.
3. Press to select the desired RTD type .
4. Connect test leads to the terminals of the RT D
measuring device as shown. Use only the two center
outputs.
5. Press or to adjust the value for output.
Simulating an RTD or Resistance
RTD DEVICE INPUT
Specifications are based on a one year calibra tion cy cle
and apply for ambient temperature from +18°C to +28°C
unless stated otherwise.
RANGE
0.00Ω~400.00Ω
Input Accuracy
4 Wrie ± Ω
Output
Accuracy ± Ω
Allowable
Excitation (mA)
400.0Ω~1500.0Ω
1500.0Ω~3200.0Ω
0.1~3.0
0.05~0.8
0.05~0.4
0.1
0.5
1
0.1
0.5
1
Allowable Excitation is for Output mode only.
It shows the allowable excitation current from an ohmmeter or
RTD measurement device connected to the calibrator.
Excitation current from Calibrator: 0.2 mA.
Maximum input voltage: 30 V
RTD Specifications
Allowable
Excitation
(mA)
OUTPUT
Accuracy (°C)
INPUT
RANGE°C (°F)
RTD TYPE
-200.0~800.0
(-328.0~1472.0)
-200.0~800.0
(-328.0~1472.0)
-200.0~800.0
(-328.0~1472.0)
-200.0~630.0
(-328.0~1166.0)
-200.0~630.0
(-328.0~1166.0)
Pt10 (385)
Pt50 (385)
Pt200(385)
Pt500(385)
Pt100(385)
1.5
0.3
0.3
0.2
0.2
4W 2W/3W
1.5
0.5
0.4
0.4
0.4
1.5
0.5
0.4
0.4
0.4
0.1~3.0
0.1~3.0
0.1~3.0
0.1~3.0
0.05~0.8
0.1~3.0
0.05~0.4
-200.0~630.0
(-328.0~1166.0)
-200.0~800.0
(-328.0~1472.0)
Pt1000(385)
Pt100
(385)JIS
0.2
0.3
0.4
0.4 0.4
0.4
Allowable Excitation is for Output mode only.
It shows the allowable excitation current from an ohmmeter or
RTD measurement device connected to the calibrator.
Excitation current from Calibrator: 0.2 mA.
Maximum input voltage: 30 V
Maximum voltage applied between any terminal and
earth ground or between any two terminals: 30V
Storage temperature: -40 to 60
Operation temperature: -10 to 55
Operation altitude: 3000 meters maximum
Temper ature c oeffi cient : 0.05× speci fied ac curac y per
for temperature ranges
-10 to 18 and 28 to 5 5
Relative humidity: 95% up to 30 ,75% up to 40 ,45%
up to 50 ,and 35% up to 55
Vibra tion: R andom 2 g ,5 Hz to 50 0 Hz
Shock: 1 meter drop test
Power requirements: Single 9 V battery (ANSI/NEDA
1604A or IEC 6LR61)
Size: 190mm L×89mm W×42mm H
Weigh t: Appro x. 350g
°C °C
°C °C
°C
°C °C °C °C
°C °C
°C °C
Maintenance
Calibration
Calibrate your calibrator once a year to ensur e that
it performs according to its specifications.
Replacing the B atteries
If the meter display “ ” on LCD, the battery must be
replaced to maintain proper operation. Fol lowin g
procedure to replacing the battery:
1. Press POWER key to OFF. Disconnect test leads from
any live source and remove the test leads from the
input terminals.
2. Remove the screws on the battery cover and open the
cover.
3. Remove the exhausted battery and replace wi th a new
9V battery.
4. Don't use the meter before the batter cover is in place
and fastened fully.
Others
1. Clean your meter with a damp cloth and mild deter gent.
Do not use abrasives, solvents, or alcohol.
2. If any faults or abnormalities are observed, the met er
can not be used any more and it has to be checked out.
Measuring an RTD or Resistance
To measure an RTD, p rocee d as foll ows:
1. Press to turn on the power.
2. If the calibrator is in simulate mode (OUTPUT on the
display), press “INPUT/OUTPUT” once. Make sure the
display shows INPUT.
3. Press to select the desired RTD type .
4. Press to select a two-wire, three-wire, or four wire
RTD inp ut conf igura tion. L ook for t he 2W, 3W, or 4 W
annunciator on the display to verify that the
configuration is set correctly.
5. Connect test leads to the RTD a s shown u p. Use tw o,
three, or four inputs, depending on the setting of 2W,
3W, or 4W on the display.
6. Read value on the meter.
RTD
TYPE
2W 3W 4W
RTD
TYPE
2W 3W 4W