LU-CDR electric capacity micro differential-pressure transmitter.

LU-CDR electric capacity micro differential-pressure transmitter.

1.technical performance

·to subject: liquid, gas or vapour

·range ability:

LU-CDRS-1100
0-0.06-0.3KPa
LU-CDRS-1200
0-0.25-1.5kpa
LU-CDRS-3200
0-0.25-1.5kpa
·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

·Static-pressure and Over-pressure limit:

if add 0 (absolute pressure) –6Mpa to any one side or two sides of the transmitter, no damage for transmitter

·Static-pressure affect:

zero error: ±1.0% of max. range, when rated operating pressure

range error: is a system error, can be calibrated.

·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: <±1.0% of the span, including the synthesize errors of linear, change-difference and repeat.

·Stability: ±1.0% of max. range (12 months)

·Temperature affect:

zero error:±1.0% / 28℃, zero & range errors:±1.5% / 28℃, when max. range (0-1.5Kpa);

·Over-pressure affect: ±0.5% of max. range (according to permitted over-loads for different ranges)

·vibration affect: ±0.1% / 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);

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