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| Smart Pressure Transmitters |
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| Model No.︰ | Model 3151 |
| Brand Name︰ | Henry |
| Country of Origin︰ | China |
| Unit Price︰ | - |
| Minimum Order︰ | - |
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Model 3151
Smart Pressure Transmitter
The Model 3151 Smart Pressure Transmitter is a micro-processor based high performance transmitter, which has flexible pressure calibration and output, automatic compensation of ambient temperature and process variable, configuration of various parameters, communication with HART protocol. The application is very various, as measuring pressure, flow and level by application method. All data of sensor is to be input, modified and stored in EEPROM.
Functions:
- Flexible Sensor input: DP, GP, AP, Vacuum
- Various output: 4-20mA, Digital Signals
- Setting Various Parameters: Zero/Span, Trim, Unit, Fail-mode, etc.
- Self Diagnostic Function: Sensor, Memory A/D Converter, Power, etc
- Digital Communication with HART protocol,
- Explosion-proof Approval & Intrinsic Safety Approval: Ex-CQST China, KOSHA, KTL, CSA
Features:
- Superior Performance
- High Reference Accuracy : +/- 0.075% of
- Long-Term Stability
- High Rangeability ( 100:1 )
- Flexibility
- Data configuration with HART configurator
- Zero point Adjustment
- Reliability
- Continuous Self-Diagnostic Function
- Automatic Ambient Temperature Compensation
- Fail-mode Process Function
- EEPROM Write Protection
- CE EMC Conformity Standards
(EN50081-2,EN50082-2)
Transmitter Description:
Electronics Module:
The Electronics module consists of a circuit board sealed in an enclosure. There are a MCU module, a power module, an analog module, a LCD module and a terminal module in a transmitter. The MCU module acquires the digital value from the analog module and apply correction coefficients selected from EEPROM. The output section of the power module converts the digital signal to a 4-20 mA output. The MCU module communicates with the HART-based Configurator or Control Systems such as DCS. The Power module has a DC-to-DC Power conversion circuit and an Input/output isolation circuit. An optional LCD module plugs into MCU module and displays the digital output in user-configured unit.
Sensor Inputs
The model 3151 -D,G,H is available in a differential pressure sensor of a capacitance type. The capacitance pressure sensor measures differential and gauge pressure and is commonly used in flow and level applications. Both sides in the capacitance sensor transmit process pressure from the process isolators to the sensor. The model 3151-A is available in a absolute pressure sensor of a piezo-resistive type and measures absolute pressure. The sensor module converts the capacitance or the resistance to the digital value. The MCU module calculates the process pressure based on the digital value.
The sensor modules have the following features:
- 0.075% accuracy – the most accurate sensor in the industry.
- The software of the transmitter compensates for the thermal effects, improving performance.
- Precise Input Compensation during operation is achieved with temperature and pressure correction coefficients that are characterized over the range the transmitter and stored in the sensor module EEPROM memory
- EEPROM stores sensor information
and correction coefficients separately
from MCU module, allowing for easy
repair, reconfiguration and replacement
Basic Setup:
Model 3151 Pressure transmitter can be easily configured from any host that support the HART protocol.
- Operational Parameters.
- 4-20mA Points (Zero/Span)
- Engineering Units
- Damping Time : 0.25 - 60 sec
- Tag : 8 alphanumeric characters
- Descriptor : 16 characters
- Message : 32 characters.
- Date : day/month/year
Calibration and Trimming
- Lower/Upper Range (zero/span))
- Sensor Zero Trimming
- Zero Point Adjustment
- DAC Output Trimming
- Transfer Function
- Self-Compensation
Self-Diagnosis and Others
- CPU & Analog Module Fault Detection
- Communication Error
- Fail-mode Handling
- LCD Indication
- Temperature Measurement of Sensor Module
Functional Specifications:
Range and Sensor Limits
(Refer to Table 1)
Zero and Span Adjustment Limits
- Zero and span values can be set anywhere within the range limits stated in Table 1.
- Span must be greater than or equal to the minimum span stated in Table 1
Output (Analog Current and Digital Data):
Two wire 4-20mA , user-configurable for linear or square root output. Digital process value superimposed on 4-20mA signal, available to any host that conforms to the HART protocol
Power Supply & Load Requirement:
External power supply required.
Transmitters operate on 11.9 to 45 V dc. With 250 ohm load, 17.4 Vdc power supply is required With 24 Vdc Supply, up to a 550 ohm load can be used Max. Loop Resistance = (E-11.9) / 0.022 (E = Power Supply Voltage)
Supply Voltage:
11.9 to 45 Vdc for operation
17.4 to 45 Vdc for HART Communications
11.9 to 42 Vdc for CSA Approval
Loop Load
0 to 1500 ohm for Operation
250 to 600 ohm for HART Communications
EMC Conformity Standards
EMI (Emission) – EN50081-2:1993
EMS (Immunity) – EN50082-2:1995
Working Pressure Limits (silicone oil):
Model DP & GP
0 to 13.79 MPa for Range 3 to 8
Model GP
0 to 31.02 MPa for Range 9
0 to 51.71 MPa for Range 0
Model HP
0 to 31.02 MPa for Ranges 4 to 7
Model AP
0 to 400 kPa for Range 4
0 to 1500 kPa for Range 5
0 to 3000 kPa for Range 6
Hydrostatic Test Pressure:
Model DP : 3000 psi (20.7 MPa)
Model HP : 6750 psi (46.5 MPa)
Model GP
Range 3 to 8 : 2000 psi (13.8 MPa)
Range 9 : 4500 psi (31.0 MPa)
Range 0 : 7500 psi (51.7 MPa)
Model AP
Range 4 : 58 psi ( 400 kPa)
Range 5 : 218 psi (1500 kPa)
Range 6 : 435 psi (3000 kPa)
Burst Pressure
Model DP,GP & HP : 10000 psig (68.9MPa)
Model AP : 2000 psig (13.8MPa)
Physical Specifications:
Wetted Materials
Isolating Diaphragms : 316L SST, Monel,
Tantalum, HAST-C
Drain/Vent Valves : 316 SST, HAST-C
Flanges and Adapters : 316 SST, HAST-C
O-ring : Viton, PTFE
Non-wetted materials
Fill Fluid : Silicone oil or Inert fill
Bolts : Stainless Steel
Electronics Housing : Aluminum,
Flameproof and Waterproof (IP67)
Cover O-ring : Buna-N
Paint : Epoxy-Polyester or Polyurethane
Mounting Bracket : 2-inch Pipe, 304 SST,
Painted Carbon Steel with 304 SST U-bolt
Nameplate : 304 SST
Electrical connections
1/2-14 NPT conduit with M4 Screw Terminals
Process Connections
1/4-18 NPT on 2.122 inch (53.9 mm) centers
on flanges for Range 3,4 and 5
1/4-18 NPT on 2.176 inch (55.3 mm) centers
on flanges for Range 6
1/4-18 NPT on 2.197 inch (55.8 mm) centers
on flanges for Range 7
1/4-18 NPT on 2.236 inch (56.8 mm) centers
on flanges for Range 8
1/4-18 NPT on 2.260 inch (57.4 mm) centers
on flanges for Range 9
1/2-14 NPT on Process Adapter (option)
Weight
5.5 kg ( excluding options )
Hazardous Location Certificates
Ex-CQST China National Approval
Da code: Explosion proof Ex d IIC T5
Fa code: Intrinsic safety Ex ia IIC T5
CSA Approval Optional |
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| Export Markets︰ | World Wide |
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