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Instrumentation & Valves

LU-CSP electric capacity negative pressure transmitter.

Update Terakhir
25 / 01 / 2024
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1 Unit
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Detail LU-CSP Electric Capacity Negative Pressure Transmitter.

LU-CSP electric capacity negative pressure transmitter.

1.technical performance

● to subject: liquid, gas or vapour

● range ability:

0-0.25-1.5 Kpa
● output: 4-20mA DC

● power: 24VDC, it may be 12VDC if non-load, max. is 45VDC

● positive & negative transfer: up and low may not exceed the range limit after positive & negative transfer, whatever the output is.

Max. positive transfer: 500% of the min. span.

Max. negative transfer: 600% of the min. span.

● Temperature:

temperature of operating for amplifier: -25℃ ~ +90℃

temperature of operating for sensor: -40℃ ~ +104℃

● Relative humidity: 0~100%

● Sensor capacity changes: <0.16cm3

● Indicate meter (field): scale gauge length: 30mm,

grade: 2.5

● Isolating explosion: ds Ⅱ BT5, Intrinsically-safety: ia Ⅱ CT5

● Span & Zero: external continually adjusted

● Over-pressure: 0 (absolute pressure) –14Mpa, no damage for transmitter,

the max. pressure is 60Mpa for flange template.

Operating pressure>3.45Kpa (absolute pressure)

● Damp: continually adjusted when time constant is between 0.2~1.67 seconds.

● Settling time: 2s,

2. performance index (note: test under the condition of none shift, max. range status of sensor, 316L stainless isolating diaphragm and other standard condition)

● Accuracy: ±0.25% of the span, including the synthesize errors of linear, change-difference and repeat.

● Stability: ±0.25% of max. range (12 months)

● Temperature affect:

zero error:±0.5% / 55℃, zero & range errors:±1.0% / 55℃, when max. range;

zero error:±3.0% / 55℃, zero & range errors:±3.5% / 55℃, when min. range;

● Over-pressure affect: ±0.25% of max. range (according to permitted over-loads for different ranges)

● vibration affect: ±0.05% / g of the max. range, when 200Hz, any axis up.

● Power affect: <0.005%/V of output range

● Load affect: none affect when voltage >12VDC input to the transmitter.

● Mounting position affect: may cause zero error max. 0.24Kpa, but can be calibrated, none affect for range

3. structure index:

● Structure material: diaphragm: 316 stainless steel, hastelloy C, Monel alloy, Tantalum;

O ring: Fluorin rubber;

Flange & bolt: 316 stainless steel;

Fill oil: silicon oil;

Electric shell: low-Cu & aluminum alloy

Plating of electric shell: toast lacquer of amido, formyl, ethene & colophony;

● pressure-lead connector:

flange NPT 1/4 (taper pipe screw thread), (this is the transmitter flange connection);

connection head screw thread NPT 1/2 (taper pipe screw thread), (selected);

● electric parts connector:

down-lead conduit NPT 1/2 line-through hole;

● net weight: 2.4kg (exclude the selected parts)
Pressure Transmitter
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