Model 770 Pressure Transmitter
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.
PERFORMANCE
| Full Scale Pressure Ranges | 0-100 thru 0-100K PSIS (0-6.89 thru 0-6894 bar | |
| Linearity (Best Fit Straight Line) | 0-100 PSI (0-6.89 bar) ±0.5% 150-10K PSI (10.3-6.89 bar) ±0.2% 15K-100K PSI (1034-6894 bar) ±0.25 |
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| Hysteresis | ≤0.15% FSO | |
| Repeatability | ≤0.15% FSO | |
| Full Scale Output (FSO) | 5 Vdc | |
| Zero and Span Balance | ±1% FSO | |
| LongTerm 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
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Supply Voltage:
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12 to 30 Vdc
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Power Supply Regulation Effect
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≤±0.02% FSO per Volt
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Output Signal
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0 - 5 Vdc
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| 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 |
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| Electrical Connection | 1/2" NPT (M), 18 AWG wire, 72" | |
| Wire Color Codes |
Red +Power Black +Signal Green Case ground White -Power/Signal |
MATERIALS OF CONSTRUCTION
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Enclosure
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0-100 thru 0-15K PSI
15-5 PH and 316 stainless steel (0-6.8 thru 0-1034 bar) 0-20K thru 0-100K PSI 316 SST and PH 13-8 Mo SST (0-1378 thru 0-6894 bar) |
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Wetted Parts
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0-100 thru 0-15K PSI
15-5 PH stainless steel (0-6.8 thru 0-1034 bar) 0-20K thru 0-100K PSI PH 13-8 Mo SST (0-1378 thru 0-6904 bar) |
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Shock Limitation
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100 G’s
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| Weight | 24 oz. (0.680 kilograms) | |
| Identification | Laser etched onto body | |
| Enclosure | Classification NEMA 4X |
MECHANICAL
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Pressure Connection:
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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) |
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Proof Pressure:
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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) |
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Burst Pressure:
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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 |
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| Mounting | May be supported by pressure connectio | |
| Identification | Laser etched onto body |
OPTIONS
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DF
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Bleed port (10K PSI and below)
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DG
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Improved temperature compensation (<5%/100°F for zero/span)
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DH
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Special range
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| DQ | Cleaning for oxygen service | |
| EA | Special calibration run | |
| JJ | Direct mount indicator with explosion proof housing | |
| JS | Direct mount indicator | |
| ME | CSA explosion proof label | |
| MR | Modified electrical damping | |
| NG | ATEX flameproof label | |
| NH | Customer specified identification | |
| NJ | CE label | |
| NK | ATEX intrinsic safety label | |
| NX | CSA intrinsic safety label | |
| NY | FM explosion proof label | |
| NZ | FM nonincendive label | |
| PW | 1/8 DIN digital indicator (consult factory) | |
| QA | 316 stainless steel wetted parts | |
| QB | Inconel (X-750) wetted parts | |
| QC | Hastelloy (C-276) wetted parts | |
| TF | FM intrinsic safety label | |
| Y () | Alternate pressure ports | |
| Note: | Application of some available options may affect standard performance. Consult your Viatran Representative for details. |