High pressure transmitters

Model 770 Pressure Transmitter

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.


  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
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)


Supply Voltage:
12 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


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)
Wetted Parts
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)
Shock Limitation
100 G’s
  Weight 24 oz. (0.680 kilograms)
  Identification Laser etched onto body
  Enclosure Classification NEMA 4X


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 May be supported by pressure connectio
Identification Laser etched onto body


Bleed port (10K PSI and below)
Improved temperature compensation (<5%/100°F for zero/span)
Special range
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.