MODEL 770 PRESSURE TRANSMITTER

0-5 Vdc output, Hazardous Location Approvals, 0-100 thru 100K psi

770 uses a solid machined diaphragm sensor, which provides excellent durability and repeatability. 770 has both IS and Explosion Proof approvals and can measure pressures up to 100K psi. A wide variety of wetted surface materials, process connections, and electrical connections are available, and special wiring configurations are easily accommodated.

Features

Many Options available

All Stainless Steel construction

IP-68 Rated

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): 5 Vdc

Zero and Span Balance: ±1% FSO

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

Response Time: <2 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: 9 to 30 Vdc

Power Supply Regulation Effect: ≤±0.02% FSO per Volt

Output Signal: 0 – 5 Vdc

Load Impedance: 100K Ohms minimum

Bridge Impedance: 5000 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

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

Wire Color Codes:

Red +Power

Black +Signal

Green Case ground

White -Power/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 FSP (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