Standard specification for monocrystalline silicon differential pressure transmitter

(Calibration range based on standard zero point, stainless steel 316L diaphragm, filled with silicone oil)

Performance specifications

Reference accuracy for range adjustment

(including linearity, hysteresis, and repeatability from zero) ± 0.075%

If TD>10 (TD=large range/adjustable range), it is: ± (0.0075 × TD)%

The square root output accuracy is 1.5 times the linear reference accuracy mentioned above

1. Environmental temperature impact

Over range impact: ± 0.075% x Span

2. Static pressure influence

3. Overvoltage impact

4. Long term stability

4. Long term stability power supply impact: ± 0.001%/10V (12-42V DC), negligible.

Functional specifications

1. Range and Range

2. Range upper and lower limits

Within the upper and lower limits of the measuring range, it can be adjusted arbitrarily.

Suggest selecting range codes with the lowest possible range ratio to optimize performance characteristics.

3. Zero point setting

The zero point and range can be adjusted to any value within the measurement range in the table, as long as the calibration range is ≥ small range

4. Installation location impact

Changes in the installation position parallel to the membrane surface will not cause zero drift effects. If the installation position changes by more than 90 degrees from the membrane surface, there will be zero position effects within the range of<0.4kPa, which can be corrected by adjusting the zero position. No range influence.

5. Output

2-wire system, 4-20mADC, optional HART output digital communication, optional linear or square root output.

Output signal limit: Imin=3.9mA，Imax=20.5mA

6. Alarm current

Low alarm mode (small): 3.7 mA

High alarm mode (large): 21 mA

Non reporting mode (hold): Maintain the effective current value before the fault

Alarm current standard setting: high alarm mode

7. Response time

The damping constant of the amplifier component is 0.1s; The time constant of the sensor is 0.1 to 1.6 seconds, depending on the range and range ratio. The additional adjustable time constant is 0.1 to 60 seconds.

The impact on nonlinear outputs (such as square root function) depends on the function and can be calculated accordingly.

Preheating time:< 15s

Environmental temperature: -40~85 ℃; -20~65 ℃ with LCD display and fluororubber sealing ring

Storage temperature/transportation temperature: -50~85 ℃; When equipped with LCD display:- 40～85℃

Working pressure: The rated working pressure is divided into three levels: 16MPa, 25MPa, and 40MPa

Static pressure limit: From a pressure of 3.5kPa to the rated pressure, the protective pressure can be greater than 1.5 times the rated pressure and applied to both sides of the transmitter.

Unidirectional overload limit: Unidirectional overload can reach the rated pressure

Electromagnetic Compatibility (EMC)

Refer to the "Electromagnetic Compatibility Appendix" on the next page

Installation

1. Power supply and load conditions

The power supply voltage is 24V, R ≤ (Us-12V)/Imax k Ω; where Imax=23 mA

Large power supply voltage: 42VDC

Small power supply voltage: 12VDC, 15VDC (backlit LCD display)

Digital communication load range: 250～600Ω

2. Electrical connection

M20X1.5 cable sealing buckle, the terminal block is suitable for wires of 0.5-2.5mm2.

3. Process Connection

The two ends of the process connection flange have NPT 1/4 and UNF 7/16 internal threads.

Physical specifications

1. Material

Measurement membrane box: stainless steel 316L

Diaphragm: Stainless steel 316L, Hastelloy C

Process flange: Stainless steel 304

Nut and bolt: stainless steel (A4)

Filling fluid: Silicone oil

Sealing rings: Nitrile rubber (NBR), Fluororubber (FKM)

Polytetrafluoroethylene (PTFE)

Transmitter housing: made of aluminum alloy material, coated with epoxy resin on the outside

Shell sealing ring: Nitrile rubber (NBR)

Nameplate: Stainless Steel 304

Weight: 3.3kg (none: LCD display, mounting bracket, process connection)

Shell protection level: IP67

2. Electromagnetic Compatibility Appendix

Note: (1) A Performance Level Description: During testing, the performance is normal within the technical specification limits.

(2) B Performance Level Description: During testing, the functionality or performance may temporarily decrease or be lost, but it can recover on its own without changing the actual operating conditions, storage, and data.