SLU-CDR Electric Capacity Micro Differential-pressure Transmitter

1.Technical Performance

·To subject: Liquid, gGas or Vapour

·Range Ability: 

·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, 316Lstainless 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)