Double flange capillary differential pressure transmitter

The double flange capillary differential pressure transmitter is a capacitive transmitter with superior performance developed and manufactured using world advanced technology. It is used to accurately measure micro differential pressure to large differential pressure, low pressure to high pressure, liquid level, vacuum degree, and specific gravity. Combined with throttling devices, it can also be used for measuring flow rate. Widely used in industrial fields such as petroleum, chemical, textile, power, food, papermaking, and pharmaceuticals.

The double flange capillary differential pressure transmitter is used to avoid direct contact between the measured medium and the isolation diaphragm of the transmitter. It connects the measuring chamber of the transmitter with a stainless steel capillary tube (a tube with a diameter of about 3mm, with additional protection) to one or two pressures or differential pressures ranging from several meters to tens of meters, forming a flange shaped measuring membrane box filled with conductive medium silicone oil. When in use, the flange can be connected to the equipment for measurement. The measurement data can be displayed on-site through the meter head or output as a 4-20mA signal through remote transmission.

High precision, rich variety, wide measurement range (see variety specification table), good stability

Adopting a two-line working mode

Small, sturdy, and highly earthquake resistant

The range and zero position can be continuously adjusted externally

No mechanical moving parts, reliable operation, easy maintenance

Positive migration can reach 500%, negative migration can reach 600%

Unified structure across the entire series, with strong interchangeability of components

Adjustable damping

Rich selection of projects

Explosion proof structure, all-weather use

Measurement media: liquids, gases, and vapors
Measurement range: 0~0.16KPa to 0~40MPa
Working voltage: 12~45 V DC (usually 24 V DC is used)
Output signal: 4-20 mA DC
Explosion proof grade: explosion-proof Exd Ⅱ BT5, intrinsic safety Exia Ⅱ CT6
Range and zero point: externally continuously adjustable
Positive and negative migration: The maximum positive migration rate is 500% of the minimum calibration range
The maximum negative transfer rate is 600% of the minimum calibration range
Damping: When filled with silicone oil, continuously adjustable from 0.25 to 1.67 seconds
Start time: 2 seconds
Temperature range: ambient temperature -20~85 ℃
Medium temperature -40~100 ℃ (15~315 ℃ for flange type high-temperature silicone oil filling)
Storage temperature -40~100 ℃
Accuracy: 0.2, 0.5
Temperature effect: ± 0.2%/10K
Static pressure influence: Micro differential pressure ≤± 10%, differential pressure ≤± 0.5%, high static pressure ≤± 2.0%
Structural materials:
Isolation membrane: stainless steel 316L, Hastelloy C276, Monel alloy, tantalum
Discharge valve: stainless steel 316L, Hastelloy C276, Monel alloy, tantalum
Flanges and fittings: Nickel plated carbon steel, 316L stainless steel, Hastelloy C276 Monel alloy
O-ring: Fluorine rubber, nitrile rubber, filling fluid, silicone oil or inert oil
Bolt: Nickel plated carbon steel
Shell: Aluminum alloy, protection level IP65
Pressure connector: flange NPT1/4, center distance 54mm
Connectors: NPT1/2 or M20 × 1.5, male thread, ball cone sealing, with center distance of 50.8, 54, 57.2mm when equipped with connectors
Signal line connection hole: G1/2
Weight: Approximately 5.44Kg
model selection