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■ Connecting the RS-232-C Interface Cable
When connecting this instrument to a personal computer, see the following descriptions and make sure that the setups (data
transmission speed, data format, etc.) between the instrument and computer match. Also, make sure that the correct interface
cable meeting the specifications for this instrument is used.
● Connector Pin Assignment
2 BB(RXD; Received Data)
1
2
3
4
5
3 BA(TXD; Transmitted Data) : Data transmitted to personal computer
5 AB(GND; Signal Ground)
Pins 1, 4, and 6 through 9 are not used.
6
7
8
9
RS-232-C Connector (DELC-J9PAF-13L6)
(D-Sub 9-pin male connector on the instrument)
● Directions of Signals
The figure below shows the directions of the signals used by the RS-232-C interface.
SD (transmitted data)
Personal
computer
RD (received data)
● Table of RS-232-C Standard Signals and Their CCITT and JIS Abbreviations
Pin No.
Abbreviation
(9-pin connector)
RS-232-C
CCITT
5
AB(GND)
102
3
BA(TXD)
103
2
BB(RXD)
104
■ Programming
● Commands Corresponding to Functions
Function
Zero calibration
0,0,18,12,64,10,10,0,32,32,32,32,32,48,46,48,160
Measured-data transmission
0,0,18,4,128,1,40,0,191
● Format of Output When Receiving Measured-data Transmission Command
Request to MT10 : Computer converts command data to characters and sends them.
Reply from MT10 : Computer reads measured values sent.
******** (8 bytes)
(8 bytes)
Name
Data
Name : INPUT (The space is filled with blanks.)
Data : Measurement (The space is filled with blanks.)
Aux. data : Pressure unit (The space is filled with blanks.)
Asterisk (*) : Each denotes a one-byte character (which is meaningless to the user-to be ignored).
<Note> The carriage return (CR) or linefeed (LF) code is not output.
● Sample Programs (Quick Basic Version 4.5)
Computer : IBM PC/AT and compatible system with serial port
1. Execute Zero Calibration
1000
'************************************
1010
'
EXECUTE ZERO CALIBRATION
1020
'
1030
'
SAVE "MT10ZCL2.BAS",A
1040
'************************************
1050
INPUT "EXECUTE ZERO CALIBRATION. (Y/N) >> ",Q$
1060
IF Q$="N" OR Q$="n" THEN 1160
1070
IF Q$<>"Y" AND Q$<>"y" THEN 1050
1080
'
1090
TX$=CHR$(0)+CHR$(0)+CHR$(18)+CHR$(12)+CHR$(64)+CHR$(10)+CHR$(10)+CHR$(0)
1100
TX$=TX$+CHR$(32)+CHR$(32)+CHR$(32)+CHR$(32)+CHR$(32)+CHR$(48)+CHR$(46)+CHR$(48)+CHR$(160)
1110
'
1120
OPEN "COM1:1200,N,8,1,DS0,CS0,LF" AS #1
1130
PRINT #1,TX$;
1140
CLOSE #1
1150
PRINT "COMPLETED."
1160
END
2. Read Measured Data 100 Times
1000
'************************************
1010
'
READ MEASURED DATA 100 TIMES
1020
'
1030
'
SAVE "MT10MES2.BAS",A
1040
'************************************
1050
INPUT "READ MEASURED DATA 100 TIMES. (Y/N) >> ",Q$
1060
IF Q$="N" OR Q$="n" THEN 1200
1070
IF Q$<>"Y" AND Q$<>"y" THEN 1050
1080
'
1090
TX$=CHR$(0)+CHR$(0)+CHR$(18)+CHR$(4)+CHR$(128)+CHR$(1)+CHR$(40)+CHR$(0)+CHR$(191)
1100
'
1110
OPEN "COM1:1200,N,8,1,DS0,CS0,LF" AS #1
1120
FOR J=1 TO 100
1130
PRINT #1,TX$;
1140
A$=INPUT$(33,#1)
1150
B$=MID$(A$,9,24)
1160
PRINT B$
1170
FOR I=1 TO 10000 : NEXT I
1180
NEXT J
1190
CLOSE #1
1200
END
6. Maintenance and Calibration (See CAUTIONS 6 through 9)
■ Storage Conditions
● The following conditions must be met when storing this instrument:
Ambient temperature: -20 to 70 °C; ambient humidity: 5 to 95 % RH or less
● Avoid storing this instrument in any of the following locations:
Damp places; in direct sunlight; near heat sources; where the level of mechanical vibration is high; where an excessive
amount of dirt, dust or salinity is present; where corrosive gases may be present
■ Cleaning the Instrument
Cleaning the instrument with a volatile solvent such as a thinner or benzene may cause discoloration. Use a damp cloth
moistened with water or alcohol to wipe the instrument carefully.
■ Calibration
The calibration guarantee period of this instrument is one year. Periodic calibration is recommended for correct use of the
instrument. For calibration, please contact your nearest Yokogawa representative, listed on the back cover of this manual.
■ Blank Display at Power-on (When Operating on Batteries or AC Power Supply)
Replace all four batteries with new ones at the same time, and then switch the manometer on.
If the problem still persists, contact your nearest Yokogawa representative, listed on the back cover of this manual.
: Data received from personal computer
Signal direction : Input
Signal direction : Output
: Ground for signals
3
MT10
2
Signal
JIS
Signal ground
SG
Transmitted data (output)
SD
Received data (input)
RD
Command Data
(8 bytes)
*
Aux. data
■ Troubleshooting
Error Code
Cause of Error
Er.01
Sensor failure
Er.02
Circuit failure
Er.03
Input exceeds measuring range
Er.07
Input exceeds measurment display range
Er.08
Measured value exceeds high/low limits
Er.12
Zero point shifting widely
*If the other error codes are displayed, please contact your YOKOGAWA sales representative.
7. Specifications
■ General Specifications
Model
265302
265303
Pressure Type
Gauge pressure
0 to 130 kPa
0 to 700 kPa
0 to 1.3256 kgf/cm
2
0 to 7.138 kgf/cm
0 to 13256 mmH
O
2
Measuring
Range (with
0 to 975.1mmHg
0 to 5250 mmHg
guranteed
0 to 521.9 inH
O
0 to 2810 inH
O
2
2
accuracy)
0 to 38.39 inHg
0 to 206.7 inHg
0 to 18.86 psi
0 to 101.5 psi
0 to 1300 mbar
0 to 7000 mbar
Measurement
-2.5 to 110% of measuring range
Display Range
±(0.04% of rdg +
1
Accuracy*
±0.1% of FS
0.03% of FS)
Resolution
0.1kPa
0.01kPa
Maximum
500kPa
1000kPa
Allowable Input
Internal Capacity
Approx. 2 cm
3
Temperature
Zero drift ±0.02% of FS/10°C
Coefficient
Span drift ±0.02% of FS/10°C
Effect of
Mounting
±0.1% of FS
±0.02% of FS
Direction
Gas Leakage
10
-5
cm
3
/s max
Measurement
Gases only (non-flammable, non-explosive, non-toxic, and non-corrosive gases)
Fluid
Measurement
5° to 50°C
Fluid Temperature
Pressure Sensor
Silicon resonant sensor
Pressure
Diaphragm
Sensing
Element
Pressure
2
kPa, kgf/cm
, mmH
O, mmHg, inH
2
Display
(one specified upon shipment)
Unit
*2
Calibration
1 year
Interval
Input Connection
Rc1/4 female or NPT1/4 female
Material of
Japanese Industrial Standard SUS316 stainless steel; Hastelloy C276
measurement
section
*1: Reference conditions: positioned horizontally, temperature 23°±3°C,
and immediately after zero calibration.
■ Complying Standard
General Safety EN61010-1: 1993/A2: 1995
SEMKO Certified
EMC:
EN55011(1991), EN55022(1994), EN50082-1(1992), EN61000-4-2(1995)
SEMKO Verified
The influence under the immunity environment is +/-30% of FS.
■ Common Specifications
Power Supply: AA-size batteries; four 1.5-V primary batteries or four 1. 2-V secondary batteries (will last for approximately 100 continuous
hours if alkaline batteries are used), AC adapter (100-120/220-240 V AC, 50/60 Hz, with 15 V/1.33 A output); optional
Communication: RS-232-C
Transmission: half-duplex "brain" protocol
Baud rate: 1200 bps
Display: 4.5 digits, LCD
Display Update Interval: approximately 0.5 second
Response: approximately 4 seconds (before the reading falls within the given accuracy)
Other Functions: Hold function that retains the on-display pressure reading, Zero-point adjustment
Warm-up Time: one minute maximum
Insulation Resistance: 500 V DC, 20 MΩ MIN. (between the AC power line and case), when the dedicated AC adapter is used
Withstanding Voltage: 1500 V AC/one minute (between the AC power line and case), when the dedicated AC adapter is used
Operating Temperature/Humidity Range: 5 to 40 °C, 20 to 80 % RH (non-condensing)
Storage Temperature/Humidity Range: -25 to 70 °C, 5 to 95 % RH
External Dimensions/Weight: approximately 72 (W) x 174 (H) x 60 (D)(mm), excluding the input connection/approximately 700 g
■ Standard Accessories
Accessory
Part or Model No.
1 Carrying case
B9926CZ
2 Alkaline AA-size
A1070EB*
3 Monkey spanner
B9926CX
4 Single-ended wrench
B9926CW
5 Hexagon wrench
B9926CY
6 Duct tape
X9910DG
- User's manual
IM 265301-01E
*: Part no. A1070EB specifies only one AA battery.
■ Optional Accessories
Accessory
Part or Model No.
-
AC power supply kit
Connector assembly (for a vinyl tube with inner
7
diameter of 4 mm and outer diameter of 6 mm)
Simple connector assembly (for a vinyl tube with
8
inner diameter of 4 mm and outer diameter of 6 mm)
Adapting connector (JIS, R1/4-to-Rc1/8)
9
Adapting connector (ANSI, R1/4-to-1/4NPT
10
female thread)
Adapting connector (ANSI, R1/4-to-1/8NPT
11
female thread)
Countermeasure
Needs repair. Immediately turn off the power and
contact your nearest Yokogawa representative, listed on
the back cover of this manual.
Needs repair. Immediately turn off the power and
contact your nearest Yokogawa representative, listed on
the back cover of this manual.
Check the input value.
Turning the wrench clockwise, adjust the display reads
0.
Check the input value.
Readjust the zero point.
■ Model Specification
265304
Model
Suffix Code
265302
265302
Mini manometer (130 kPa)
· · · · · · · · · ·
0 to 3000 kPa
265303
Mini manometer (700 kPa)
· · · · · · · · · ·
2
0 to 30.59 kgf/cm
2
265304
· · · · · · · · · ·
Mini manometer (3000 kPa)
Pressure
-U1
kPa
Display
-U2
kgf/cm
0 to 12044 inH
O
2
Unit *
2
0 to 885.9 inHg
-U3
mmH
0 to 435.1 psi
-U4
mmHg
0 to 30 bar
-U5
inH
-U6
inHg
-U7
psi
1kPa
-U8
mbar (bar *
4500kPa
Input Connection
-P1
Rc1/4 female
-P2
NPT1/4 female
*2: The specification U3 is not available for Model 265303.
For Model 265304, the specifications U3 and U4 are
not available.
*3: For Model 265304 only
±0.01% of FS
■ External Dimensions
O, inHg, psi or mbar
2
1
Quantity Specification(s)
1
4
1.5 V DC
1
150 mm
1
H19
1
H2.5
2
1
-
1
This manual
7
Quantity
Specification Code
-D: UL/CSA Standard
-F: VDE Standard
(1)
366969
-R: SAA Standard
-Q: BS Standard
8
B9310RR
1
B9310ZH
1
G9612BG
1
9
G9612BJ
1
G9612BW
1
Specification(s)
2
O
2
O
2
3
)
72
3
4
5
6
10
11
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