MODEL LP770 LOW POWER PRESSURE TRANSDUCER

Low Power consumption, 1-5 Vdc output, 0-100 thru 0-100K psi

LP770 is designed to run on very low power, in remote applications like pipeline pressure measurement or offshore applications. LP770 has the full range of hazardous location approvals, a variety of wetted materials, process connections and electrical connections.

Features

All Stainless Steel construction

Many Options available

High Pressure Applications

Performance

Full Scale Pressure Range: 0-100 thru 0-100K PSIS (0-6.89 thru 0-6894 bar)

Accuracy (RSS):

(BFSL Linearity, Hysteresis, Repeatability):

- 0-300 PSI thru 0-15K PSI Ranges ~ ±0.20% FSO ( ±0.15% FSO improved with “DN” option)
- < 0-300 PSI or > 0-15K PSI Ranges ~ ±0.25% FSO ( ±0.15% FSO improved with “DN” option)

Linearity (Best Fit Straight Line):

- 0-300 PSI thru 0-15K PSI Ranges ~ ±0.10% FSO (BFSL), Typical
- < 0-300 PSI or > 0-15K PSI Ranges ~ ±0.15% FSO (BFSL), Typical

Hysteresis: < ± 0.05% FSO, Typical

Repeatability: < ± 0.05% FSO, Typical

Full Scale Output (FSO): 4 Vdc

Zero and Span Balance: ±1% FSO

Resolution: Infinite

Long Term Stability: ≤±0.25% FSO per 6 months

Response Time:

(Mechanical and Electrical Combined): <5 mSec to reach 90% FSO

Temperature Effect on Zero: ≤±1% FSO per 100°F (37°C)

Temperature Effect on Span: ≤±1% FSO per 100°F (37°C)

Compensated Temperature: 70°F to 170°F (21°C to 76°C)

Operating Temperature: -40°F to 190°F (-40°C to 87°C)

Storage Temperature Limit: -65°F to 250°F (-53°C to 121°C)

Electrical

Supply Voltage: 7 to 24 Vdc

Power Supply Regulation Effect: ≤±0.003% FSO per Volt over supply voltage range

Output Signal: 1 – 5 Vdc

Current Consumption: <1.5 mA

Load Impedance: 50K Ohms minimum

Bridge Impedance: 5,000 Ohms nominal

Circuit Protection: Varistor protected across the input leads for surges above 40 V and currents to 250 Amps peak with a pulse width of 20 μSecs. Reverse polarity protected.

Insulation Resistance: >200 MegOhms to case ground

RFI / EMI Suppression: > Negligible effect to 500 Mhz at 5 watts direct contact

Electrical Connection: 1/2″ NPT (M), 18 AWG wire, 72″

Wire Color Codes:

Red +Power

Black -Power / -Signal

Green Case Ground

White +Signal

Mechanical

Pressure Connection:

0-50 thru 0-15K PSI (1/4″ – 18 NPT Female (0-3.3 thru 0-1034 bar))
0-20K thru 0-50K PSI (1/4″ F250-C High Pressure Tube (0-1378 thru 0-3447 bar))
0-60K thru 0-100K PSI (5/16″ F312C High Pressure Tube (0-4136) thru 0-6894 bar))

Proof Pressure:

0-100 thru 0-15K PSI (1.5 times FSPR or 20K PSI (1378 bar), (0-6.8 thru 0-1034 bar) whichever is less)
0-20K thru 0-100K PSI (1.2 times FSPR (0-1378 thru 0-6894 bar))

Burst Pressure:

0-100 thru 0-15K PSI (≥ 2.3 to 5 times FSPR dependent on (0-6.8 thru 0-10342 bar) sensor)
0-20K thru 0-100K PSI (≥ 1.5 times FSPR or 125K PSI (8618 bar) (0-1378 thru 0-6894 bar) whichever is less)

Mounting: Supported by process piping or optional mounting bracket