SMART DIFFERENTIAL PRESSURE TRANSMITTER
SDPT-LD



OVERVIEW

SDPT-LD Smart Differential Pressure Transmitter applies in lossless and remote signal transferring in industrial automation controls engineering. It combines with industrial controlling instrument to form necessary pressure measuring instrument for smart controlling system. It uses built-in microprocessor and high performance signal microprocessor sensor to collect pressure signal, transfers it to digital signal through A/D and passes it to user’s receiving devices.


FEATURES
● High performance based with microprocessor
● Digital signals system
● RS485/RS232 output signal to collect maximum 512 sensors
● Use software to calibrate zero point and full pressure range. No potentiometer required.
● Suit for mass digit collecting and automatic controlling system.
● Max. zero drift is ±0.25kPa. All zero drifts can be corrected and have no impact to the span.
● Adjustable with span or zero point button of the device, or able to be remotely controlled through HART hand-held communicator.


SPECIFICATIONS

Pressure range：1.3-7.5；6.2-37.4；31-180；120-680；350-2060；1170-6890 KPa

Pressure Measurement：Gauge pressure；absolute pressure

Output signals：RS485/RS232　4-20mA / HART

Display mode：4-digit LED display

Output indicator：linear (0-100% scale)；square root (0-100% scale)；
　　　　　　　　3-1/2-digit LCD (0-100% linear)；3-1/2-digit smart LCD

Accuracy：0.1% F.S.

Nonlinearity：＜0.25% F.S.　＜0.5% F.S.
Hysteresis：＜0.25% F.S. ＜0.5% F.S
Repeatability：＜0.25% F.S. ＜0.5% F.S
Zero compensation：＜0.1% F.S. ＜0.2% F.S
Temp.compensation：＜0.01% F.S. ＜0.2% F.S
Stability (year)：＜0.2% F.S. ＜0.25% F.S

Damping time (sec.)：Adjustable

Working voltage：12-36V DC (standard：24V DC)

Working temperature：-20～85°C
(silicon oil filled: -40～104°C；Inert liquid: -18～85°C)

Overload capacity：300%；0～13.79 MPa pressure put on any side of the transmitter causes no harm.；3.45KPa～13.79MPa in static pressure can meet the performance requirement.

Reliability：Over 90 million times (25°C)

Loading resistance：＜750Ω

Response Time：＜1ms

Measuring media：Any media compatible with 316L

Diaphragm materials：SS316L(Standard)；Made-to-order

Housing materials：1Cr18Ni9Ti or cast aluminum

Process connection：M20x1.5, or follow customer’s requirement

Explosion-proof：ExiaIICT4 (Intrinsic safety)；ExdIIBT5 (explosion-proof)

Housing protection：IP67

*Note: The case of blind and explosion-proof series is prohibited to open when it is powered.