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JC-G/MS
JIECHUANG
Overview
This product series is SIL2 safety certified.
The diaphragm box of the JC-G/MS series dual-flange transmitter is designed to prevent solids, precipitative liquids, and high-temperature media from directly entering the transmitter's pressure sensor assembly. This design helps avoid measurement inaccuracies or direct damage to the sensor. Pressure is transmitted using fill fluids like silicone oil between the diaphragm and the transmitter.
The JC-G/MS series dual-flange transmitter is used to measure the level, density, pressure, and flow of liquids, gases, or steam, and converts these measurements into a 4-20mADC HART current signal output. It can communicate with a HART communicator for configuration, monitoring, and more.
Technical Parameters
● Measured Parameters: Differential pressure, level
● Measurement Range:
Lower Limit: Starting from -100% URL (continuously adjustable)
Upper Limit: Up to +100% URL (continuously adjustable)
● Measurement Range：
Table 1: Correspondence Table between Range Codes and Range | |||
Range Codes | Minimum Range | Maximum Range | Rated Pressure (Maximum) |
B | 1 kPa | 6 kPa | Rated Pressure of Remote Transmission Flange |
C | 4 kPa | 40 kPa | |
D | 25 kPa | 250 kPa | |
F | 200 kPa | 300 kPa | |
Table 2: Correspondence Table between Remote Transmission Flange and Minimum Range | |||
Flange | Nominal Diameter | Minimum Range | |
Single-Side Remote Transmission | Double-Side Remote Transmission | ||
Flat type | DN 50/2" | 10 kPa | 10 kPa |
DN 80/3" | 6 kPa | 2 kPa | |
DN 4" | 6 kPa | 2 kPa | |
Insertion type | DN 50/2" | 16 kPa | 16 kPa |
DN 80/3" | 6 kPa | 2 kPa | |
DN 4" | 6 kPa | 2 kPa | |
note: “The minimum range of the remote transmitter should be the larger of the minimum ranges in Table 1 and Table 2. The adjusted range must not be less than the minimum range. The maximum range of the remote transmitter should be the smaller of the maximum range of the transmitter body and the rated pressure of the liquid flange.”
● Output Signal
2-wire, 4-20mA DC HART output, digital communication, HART protocol superimposed on the 4-20mA DC signal. Output signal limits: Imin = 3.8mA, Imax = 20.5mA
● Alarm Current (mode adjustable)
Low alarm mode (minimum): 3.6mA
High alarm mode (maximum): 21mA
No alarm mode (hold): maintains the valid current value before the fault
Standard alarm current setting: high alarm mode
● Response Time
Amplifier component damping constant is 0.1s; sensor and remote flange time constant is 0.2 to 6s, depending on the sensor range, range ratio, capillary length, and fill fluid viscosity. Additional adjustable time constant: 0.1 to 60s.
● Installation Conditions
The transmitter body is versatile in mounting, allowing installation in any orientation.
Ideally, position the process flange axis vertically to prevent correctable zero shifts due to position deviations.
The housing offers 360° rotation flexibility.
Ensure the remote flange connects to the matching flange with suitable soft gaskets, bolts, and nuts.
Capillary bending should adhere to a minimum radius of 75mm, with no winding permitted.
For dual flange remote transmitters, maintain consistent ambient temperature during installation of capillary components and remote flanges.
● Ambient Temperature
Minimum: depends on the fill fluid
Maximum: 85°C
With LCD display and fluororubber sealing ring: -20 to 65°C
● Storage/Transportation Temperature
Minimum: depends on the fill fluid
Maximum: 85°C
● Relative Humidity: 0 to 100%
● Medium Temperature: -30 to 400℃
Table 3: Relationship Table of Fill Fluid, Operating Temperature, and Minimum Operating Static Pressure | ||||
Fill Fluid | Silicone Oil (S) | High-Temp Silicone Oil (H) | Ultra-High-Temp Silicone Oil (U) | Vegetable Oil (V) |
Density(25℃) | 960 kg/m³ | 980 kg/m³ | 1020 kg/m³ | 937 kg/m³ |
Operating Temperature Range | -30 ~ 200℃ | -10~ 350℃ | -10 ~ 400℃ | 0 ~ 250℃ |
Temperature | Operating Static Pressure Range (Absolute Pressure in kPa) | |||
20℃ | > 10 | > 10 | > 10 | > 25 |
100℃ | > 25 | > 25 | > 25 | > 50 |
150℃ | > 50 | > 50 | > 50 | > 75 |
200℃ | > 75 | > 75 | > 75 | > 100 |
250℃ | > 100 | > 100 | > 100 | |
350℃ | > 100 | > 100 | ||
400℃ | > 100 | |||
Note: Special design may be required for operating conditions beyond the specified temperature and static pressure range.
● Transmitter Body Pressure Limits:
From 3.5kPa absolute pressure up to the rated pressure; protection pressure can exceed 1.5 times the rated pressure.
● Overload Limits:
Low-pressure side is the transmitter body's rated pressure, high-pressure side is the remote flange's rated pressure, with the possibility of correctable zero drift.
● Weight:
Single-side remote transmission:
DN50/2": approximately 7 to 10kg
DN80/3": approximately 8 to 11kg
DN4": approximately 9 to 12kg
Dual-side remote transmission:
DN50/2": approximately 10 to 16.5kg
DN80/3": approximately 12 to 18kg
DN4": approximately 14 to 21kg.
● Pressure-type Remote Transmission Transmitter:
DN50PN25: approximately 6kg
DN80PN25: approximately 8kg
DN100PN25: approximately 10kg
● Explosion-proof Performance:
Explosion-proof permission: Ex d IIC T6
Intrinsic safety permission: Exia IIC T4
● Power Supply Load Conditions:
Power supply voltage: 24V
R < (Us-12V)/max kΩ, where 1max = 23mA
Maximum power supply voltage: 36VDC
Minimum power supply voltage: 9VDC (low voltage version), 13.5VDC (backlit LCD display), LED display
● Digital Communication Load Range: 250 ~ 600Ω
● Materials:
Measurement diaphragm box: Stainless Steel 316L
Diaphragm: Stainless Steel 316L, Hastelloy Alloy C, Tantalum, Titanium
Process flange: Stainless Steel 304
Fill fluid: Silicone oil, high-temperature silicone oil, ultra-high-temperature silicone oil, vegetable oil
Sealing ring: Nitrile rubber (NBR), Fluororubber (FKM), Polytetrafluoroethylene (PTFE)
Transmitter housing: Aluminum alloy, surface coated with epoxy resin; Stainless Steel housing optional
Housing sealing ring: Nitrile rubber (NBR)
Nameplate: Stainless Steel 304
● Electrical Connection: M20×1.5 or NPT1/2 internal thread
● Process Connection: Flange
● Housing Protection Level: IP67
