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ST3000 Series 900 Smart Transmitter Differential Pressure Transmitters No. SS2-STJ100-0100 (Rev.7)
ST3000 Series 900 Smart Transmitter
Differential Pressure Transmitters
Model STD910/STD920/STD930/STD960/STD921/STD931/STD961
Specifications are subject to change without notice.
- 1 -
First issue: Apr. 1999
Rev.7: Oct. 2003
OVERVIEW
The ST3000 Smart Transmitter is a micropro-
cessor-based smart transmitter that features high
performance and excellent stability. Capable of
measuring gas, liquid, and vapor, and liquid lev-
els, it transmits 4 to 20 mA DC analog and digi-
tal signals according to the measured differential
pressure.
It can also execute two-way communications
between the SFC (Smart Field Communicator)
or HART
®
275 communicator, and, via DE pro-
tocol, with the TDCS3000 or 3000
X
and a data-
base, thus facilitating self-diagnosis, range
resetting, and automatic zero adjustment.
FEATURES
Excellent stability and high performance
Long-term stability is proven in 500,000 instal-
lations worldwide.
Unique characterization and composite semi-
conductor sensors realize excellent temperature
and static pressure characteristics.
Wide measuring range (range ability)
A wide measuring range is available from a
single model. This feature is highly effective in
taking measurement over a wide range and
reducing the need for inventory.
Model STD920: 0.75 to 100 kPa (rangeability:
133 to 1)
A diverse lineup
A wide range of models is available to meet
user requirements. They include draft range
differential pressure, standard differential pres-
sure, high differential pressure, standard differ-
ential pressure/high static pressure, and high
differential pressure/high static pressure mod-
els.
A wide variety of corrosion-resistant materials
for wetted parts is also available.
Remote communication
Either analog output (4 to 20 mA DC), or digi-
tal output (DE protocol) is possible.
Two-way communication using digital output
facilitates self-diagnosis, range resetting, auto-
matic zero adjustment, and other operations.
HART
®
protocol communication is available.
(Option)
HART
®
is a registered trademark of the HART Communication Foundation. No. SS2-STJ100-0100 (Rev.7)
Yamatake Corporation
- 2 -
APPLICATION
Petroleum/Petrochemical/Chemical
For strict flow control in combination with orifice plates.
Electric power/City gas/Other utilities
For measurement applications that require high degrees of
stability and accuracy.
Draft range applications such as Semicon-
ductor Equipment Manufacturing /Clean
Rooms
For applications that require highly stable, accurate mea-
surement.
Pulp and paper
For lines that need transmitters resistant to fluid such as
chemical liquids and corrosive fluids.
Iron and steel/Nonferrous metal/Ceramics
For highly stable, accurate measurements such as fur-
nace pressure measurement.
For lines that require stable measurement under strictly
controlled (temperature, humidity, etc.) conditions.
Machinery/Shipbuilding
For lines that require stable measurement under strictly
controlled (temperature, humidity, etc.) conditions.
FUNCTIONAL SPECIFICATIONS
Type of protection
JIS C0920 watertight: NEMA3 and 4X
JIS F8001 class 2 watertight: IEC IP67
FM Explosionproof approval
Explosionproof for Class I (Gas, steam), Division 1,
Group A, B, C, D
Dust-ignition for Class II (Inflammable dust), Divi-
sion 1, Group E, F, G
Suitable for Class III (inflammable fiber), Division 1
Nonincendive for Class I, Division 2, Group A, B, C,
D
FM Intrinsically safe approval
Intrinsically safe for Class I, II, III, Division 1, Group
A, B, C, D, E, F, G
ATEX Flameproof approval
Certificate number: INERIS99ATEX0010 X
II 2 GD EExd IIC T6 at -20 < Tamb < +60
°
C
ATEX Intrinsic safety
Certificate number: KEMA03ATEX1225 X
II 1 G EEx ia IIC T4 at -20 < Tamb < +60°C
Electrical data: Ui = 30V
Ii = 100 mA
Pi = 1W
Ci = 3 nF
Li = 0.5 mH
SPECIAL CONDITIONS FOR SAFE USE (X)
Because the enclosure of the Smart Pressure Transmit-
ter is made of aluminium, if it is mounted in an area
where the use of category 1 G apparatus is required, it
must be installed such, that, even in the event of rare
incidents, ignition sources due to impact and friction
sparks are excluded.
NEPSI Flameproof approval
Ex d II T6 (with NEPSI Dust Ignition DIP DT T13)
NEPSI Intrinsically safe approval
Ex ia IIC T5 at -20 < Tamb < +60
°
C
Ex ia IIC T6 at -20 < Tamb < +40
°
C
CSA Explosion-proof Approval
CSA Explosion-proof for Class I, (Division 1),
Groups A, B, C and D
CSA Flameproof for Class I, Zone 1, Ex d IIC T6 at
ambient temp. = -20°C to +60°C
CSA Dust-ignitionproof for Class II and III, (Divi-
sion 1), Groups E, F and G
EMC Conformity
89/336/EEC, 92/31/EEC, 93/68/EEC Electromagnetic
Compatibility (EMC) Directive
PED Conformity (97/23/EC)
Comply with Module H (with H1 option), or SEP
(Sound Engineering Practice) for models of which
maximum working pressure is 200 bar or lower.
Lowest temperature for Module H
Bolt/nut material SNB7:
-10
°
C
SUS630: -6
°
C Yamatake Corporation
No. SS2-STJ100-0100 (Rev.7)
- 3 -
Measuring span / Setting range / Working
pressure range
Note)
1) With PVC wetted parts, the maximum working pressure
is 1.5 MPa {15 kgf/cm
2
}.
2) With SUS304 bolts and nuts, the maximum working
pressure is 7 MPa {70 kgf/cm
2
}.
3) With SUS304 bolts and nuts, the maximum working
pressure is 23 MPa {230 kgf/cm
2
}.
Figure 1 Working pressure and temperature of
wetted parts section (for general pur-
pose models)
Figure 2 Working pressure and temperature of
wetted parts section (for oxygen and
chlorine service)
Figure 3 Working pressure and temperature of
wetted parts section (for model
STD910 regular type)
Figure 4 Working pressure and temperature of
wetted parts section (for model
STD910 oxygen service)
Mo
del Measuring Span Measuring range Working Pressure Range
STD
910
0.1 to 2 kPa
{10 to 200 mmH
2
O}
-1 to 1 kPa
{-100 to 100 mmH
2
O}
-70 to 210 kPa
{-0.7 to 2.1 kgf/cm
2
}
(See Figure 3, 4)
STD
920
0.75 to 100 kPa
{75~10160 mmH
2
O}
-100 to 100 kPa
{-10160 to 10160 mmH
2
O}
2.0kPa abs to 21MPa
{15 mmHg abs to 210 kgf/
cm
2
} *Note 1, Note 2
(For vacuum pressure, see
Figure 1, 2)
STD
930
35 to 700 kPa
{0.35 to 7 kgf/cm
2
}
-100 to 700 kPa
{-1 to 7 kgf/cm
2
}
STD
960
0.25 to 14 MPa
{2.5 to 140 kgf/cm
2
}
-0.1 to 14 MPa
{-1 to 140 kgf/cm
2
}
2.0 kPa abs to 21 MPa
{15 mmHg abs to 210 kgf/
cm
2
} *Note 2
(For vacuum pressure, see
Figure 1, 2)
STD
921
2.5 to 100 kPa
{250~10160
mmH
2
O}
-100 to 100 kPa
{-10160 to 10160 mmH
2
O}
2.0 kPa abs to 42 MPa
{15mmHg abs to 420 kgf/
cm
2
} *Note 3
(For vacuum pressure, see
Figure 1, 2)
STD
931
35 to 700 kPa
{0.35 to 7 kgf/cm
2
}
-100 to 700 kPa
{-1 to 7 kgf/cm
2
}
STD
961
0.25 to 14 MPa
{2.5 to 140 kgf/cm
2
}
-0.1 to 14 MPa
{-1 to 140 kgf/cm
2
}
133.3
101.3
80
53
27
13
8.0
5.3
2.0
{760}
{15}
1.3
Working pressure P (kPa {mmHg} abs.)
Temperature of wetted parts ( C)
-50 -40 40 50 60 70 80 90 100 110125
180185
Operative limit
Normal operating
range
Operative limit
Unusable range
133.3
101.3
53
-40
-10 0
40
75
80
Normal operating
range
W
orking pressure P
kPa {mmHg}
Temperature of wetted parts ( C)
Unusable range
{1000}
{760}
{400}
210
{2.1}
0
-70
{-0.7}
-40
-15
0
657080
Temperature of wetted parts ( C)
W
orking pressure P
(kPa {kgf/cm
2
} )
Normal operating range
Operating limit
Operative limit
Normal
operating
range
210
{2.1}
0
-20
{-0.2}
-50
{-0.5}
-40
-10 0
40 6570
Temperature of wetted parts ( C)
W
o
rking pressure P
(kPa {kgf/cm
2
}) No. SS2-STJ100-0100 (Rev.7)
Yamatake Corporation
- 4 -
Supply voltage and load resistance
10.8 to 45V DC. A load resistance of 250
or more is
necessary between loops. See Figure 5.
Figure 5 Supply voltage vs. load resistance
characteristics
Note)
For communication with SFC, a load resistance of 250
or more is necessary.
For ATEX Intrinsic safety model, minimum voltage of
18.0V is required.
Output
Analog output (4 to 20 mA DC) with DE protocol
Analog output (4 to 20 mA DC) with HART protocol
Digital output (DE protocol)
Ambient temperature limit
Normal operating range
-40 to 85°C for general purpose models
-15 to 65°C for general purpose model (model STD910)
-10 to 75°C for oxygen and chlorine models
-20 to 70°C for models with digital indicators
Operative limits
-50 to 93°C for general purpose models
-40 to 70°C for general purpose model (model STD910)
-40 to 80°C for oxygen and chlorine models
-30 to 80°C for models with digital indicators
Transportation and storage conditions
-50 to 85°C for general purpose models
-15 to 65°C for general purpose model (model STD910)
Temperature ranges of wetted parts
Normal operating range
-40 to 1