JCMC Multivariable Transmitter with Hart
Consists of a differential pressure sensor module with integrated electronic adapter unit, an amplifier module with a control unit and a two-wire system RTD input terminal to measure process temperature.
- Introduction
- Parameters
- Model
- How to Order
- Video
JCMC Multivariable Transmitter with hart
The  transmitter  adopts  modularized  design.  It  consists  of  a  differential  pressure  sensor  module  with integrated electronic adapter unit, an amplifier module with a control unit and a two-wire system RTD input terminal to measure process temperature. The sensor module adopts full-welded structure, interior of which is a twin-barrel system with an intact overload isolation diaphragm, and one absolute pressure sensor and one differential pressure sensor are installed inside. The absolute pressure sensor is only installed on the high-pressure  side,  and  the  measured  pressure  will  be  taken  as  reference  value,  in  order  to  compensate influence from static pressure. The differential pressure sensor is made up of one capillary tube connected with negative pole of the sensor module.
An additional differential pressure (Dp) will be applied onto diaphragm of the differential pressure sensor through the isolation diaphragm and filler liquid. Check for tiny variation of the diaphragm, which shall result in changes of output voltage of the testing system. The voltage signal direct proportional to the input pressure will be digitalized through the adapter before being transmitted  into  the  amplifier,  and  then  the  amplifier  will  perform  linearization  on  the  signal  as  well  as temperature compensation. Then, three values of Dp, P and T can be converted signals direct proportional to mass flowrate through compensation. Except for mass flowrate (Qm), Dp, P, T and Qv can also make for other purpose of application. According  to  differences  of  transmitter  models,  connection  between  the transmitter  and  process  can  be  fulfilled  through  female  screw  on  elliptic  flange  on  the  transmitter,  or connection between remote flanges and process pipelines or flanges.
The transmitter adopts a two-wire system, the same pair of leads in which can be used to connect working voltage,  signal  outputs  (4~20mA)  and  digital  quantities.  Electrical connection can be fulfilled through interconnection with terminals through cable inlet.
PERFORMANCE SPECIFICATIONS
Reference Accuracy of Calibrated Span (includes
terminal-based linearity, hysteresis, and repeatability)
± 0.1%/± 0.01%
If TD>10 (TD=URL/SPAN):
±(0.0075×TD)%/ ±(0.01×TD)%
Ambient Temperature Effects
-20℃~65℃:±(0.15×TD+0.05)%×Span
Every 10℃ is ±0.08% ×Span (TD=1)
-40℃~-20℃ & 65℃~85℃:
±(0.2×TD+0.05)%×Span
Static Pressure Effects
±(0.05%URL+0.075%Span)/10MPa
Overpressure Effects: ±0.1%×Span /10MPa。
Stability: ±0.1%×Span /3 years
Power Supply Effects
±0.001% /10V (12~42V DC)
Measuring Temperature
-50℃~650℃
Zero Adjustment Limits
Zero can be fully elevated or suppressed, within the
lower and upper range limits of the capsule.
External Zero Adjustment
External zero is continuously adjustable with 0.01%
incremental resolution of span. Re-range can be done
locally using the range setting switch.
Sample | |||||||||||||||||||||
JCMT |
JCMT Multivariable Pressure Transmitter |
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Output |
H |
Two wire 4-20ma DC ( Hart ) | M | ||||||||||||||||||
M |
Three wire 4-20ma DC Output: flow rate | ||||||||||||||||||||
Sensor |
Differential Pressure |
Compound Micro-Silicon Sensor | Capacitance Sensor |
B |
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A |
0-50pa to 1pa (Rated pressure is 0.6mpa) |
2E |
0 to 1.5Kpa | ||||||||||||||||||
B |
0 – 200pa to 6 kpa |
3E |
0 to 7.5kpa | ||||||||||||||||||
C |
0 -400pa to 40kpa |
4E |
0 to 37.4 kpa | ||||||||||||||||||
D |
0-2.5kpa to 250 kpa |
5E |
0 to 186 kpa | ||||||||||||||||||
Gauge Pressure |
No |
No |
Rated pressure compensated |
4 |
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N1 |
0 -3.5 Mpa | ||||||||||||||||||||
N2 |
0-7Mpa | ||||||||||||||||||||
N3 |
0-40Mpa | ||||||||||||||||||||
NS |
0.6Mpa ( only for DP A ) | ||||||||||||||||||||
Medium Temp |
T0 |
Rated valve temperature compensated |
T1 |
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T1 |
Pt 100 ( Hart flow rate is Pt 1000) | ||||||||||||||||||||
Flow rate
Calculation |
Measured Medium |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
6 Â |
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Air | Stack Gas | Coal gas | Natrual Gas | Heated Steam | Saturation Steam | Compressed Gas | Liquid | Other | |||||||||||||
Pipe Size |
DNxx | XX ,mm | DN50 | ||||||||||||||||||
Throttling element Type |
K |
Throttling element  don’t need calibrate , such as Orifice Plate,Nozzle ,Venturi |
K |
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S |
Linear orifice plate | ||||||||||||||||||||
V |
Calibrated throttling element ,such as V-cone | ||||||||||||||||||||
J |
Inserted averaging pitot-tube | ||||||||||||||||||||
F |
Other non-standard throttling element | ||||||||||||||||||||
Accessories
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Process connection |
C |
Without Process connecttor , 1/4 to 18NPT female td | C0 | |||||||||||||||||
C1 |
With 1/2-14 NPT female thread | ||||||||||||||||||||
C2 |
M 20 *1.5 T shape connector + welded pipe | ||||||||||||||||||||
T |
With three way manifold | ||||||||||||||||||||
Accessories |
Differential pressure Sensor
diaphragm |
Diaphram |
Diaphram |
Fill oil |
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E |
316L | Silicon oil | |||||||||||||||||||
F |
316L | Fluorocarbon oil(explosion-proof) | E | ||||||||||||||||||
A |
HC | Silicon oil | |||||||||||||||||||
B |
HC | Fluorocarbon oil(explosion-proof) | |||||||||||||||||||
Accessories |
Display |
M0 |
Without display and magnetic pen
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M1 | |||||||||||||||||
M1 |
Dot-matrix LCD display and Magnetic pen
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Cable Entry |
D |
NPT 1/2 N thread | E | ||||||||||||||||||
E |
M20*1.5 Cable airproof | ||||||||||||||||||||
Installation Yoke |
B0 |
Without installation Yoke |
B0 |
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B1 |
Bend Mounting Yoke for pipe | ||||||||||||||||||||
B2 |
Bend mounting yoke for Plate | ||||||||||||||||||||
B3 |
Flat Mounting Yoke | ||||||||||||||||||||
Other |
Explosion-proof |
E0 |
Normal ,without explosionproof |
E0 |
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E1 |
Intrinsically Safe ExibIICT 5 | ||||||||||||||||||||
E2 |
Explosion-proof | ||||||||||||||||||||
Measurement Function ( Modbus) |
A |
Compound sensor ( Differential pressure , Gauge Pressure , medium  temperature ) , three way 4-20ma output |
B |
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B |
Mass flow rate function( Instant flow rate , gauge pressure , medium temperature) three way 4-20ma output | ||||||||||||||||||||
Model Selection :JCMT10TC-M-BN1T1-6DN50K-C0M1EBO-E0B |
- How to order JCMC Multivariable Transmitter with hart
- Medium
- Range
- Working pressure
- Working temperature
- Process connection :flange size , rating capillary length
- Other requirement
JCMC Multivariable Transmitter with hart