NoShok 755 Specifications
Pressure
Digital Pressure Transmitters
755 SERIES
FEATURES
■
Accuracy to ±0.05% full scale
(BFSL)
■ Up to 20:1 span turn down
■ Advanced diffused semi-
conductor and sputtered thin
film sensor for maximum
stability
■ Built-in process temperature
display
■ Built-in selectable process
digital filtering
■ Welded 316 stainless steel
pressure chamber
■ 32 point process linearization
■ Adjustable display for easy
viewing
■ 12 different measurement
units
■ CE compliant
APPLICATIONS
■ Hydraulic and pneumatic
systems
■ Pumps and compressors
■ Test equipment and
systems
■ Industrial machinery and
machine tools
■ HVAC systems
■ Power generation
■ Water and wastewater
■ Refrigeration equipment
■ Laboratory and test
equipment
■ Chemical/petrochemical
■ Marine
• Combines the reliability of diffused semi conductor and sputtered thin lm sensors
with digital electronics for outstanding
performance and value
• Accuracy up to ±0.05% full scale (BFSL)
• Up to 20:1 span turn down and -2.5% to 99%
zero point adjustment for maximum exibility
• Built-in process temperature display and
selectable process digital ltering
• Welded 316 stainless steel pressure chamber
• 32 point process linearization
• Adjustable display for easy viewing
• 12 different measurement units
• User programming includes menus to allow
the setting of user language, engineering
units, zero and span calibration points and
digital ltering to dampen pressure uctuations
• Stainless steel wetted parts are welded with
no internal o-rings, gaskets or seals
• CE compliant to suppress RFI, EMI and ESD
SPECIFICATIONS
Output 4 mA to 20 mA, 2 wire
Accuracy ±0.05% full scale (BFSL); ±0.15% full scale for 0 psig to 15,000 psig range;
Total accuracy ±0.05% full scale (BFSL) including the effects of linearity, hysteresis,
Hysteresis ≤ ±0.04% full scale
Repeatability ≤ ±0.05% full scale
Stability ≤ ±0.1% full scale for 1 year non-accumulating
Pressure ranges Standard ranges from vacuum through 15,000 psig
Proof pressure 5 times full scale for ranges 0 psi to 5 psi through 0 psi to 250 psi
Burst pressure 6 times full scale for ranges 0 psi to 5 psi through 0 psi to 250 psi
Power supply* 12 Vdc to 30 Vdc (4 mA to 20 mA, 2-wire)
Load limitations ≤ (VPower - 10)/0.020 Amp
Zero adjustability From -2.5% full scale up to 99% full scale
Span adjustability 20:1 turndown for ranges up through 0 psig to 15,000 psig
Turn down effect on
accuracy
Response time <10 milliseconds (between 10% and 90% full scale)
Durability >100,000,000 full scale cycles
Digitalltering User selectable from 0 sec. to 40 sec. for display and output signal
Temperature ranges Compensated -4 °F to 176 °F (-20 °C to 80 °C); Zero effect is ±0.01% full scale/ °F
Wetted materials 316 stainless steel (ranges up through 0 psig to 250 psig) 316
Housing material Fiberglass reinforced PBT (polybutene terephthlate)
Environmental rating IP65, NEMA 4X according to EN 60529/IEC529
Electromagnetic rating 2004/108/EEC, EN 61326 Emission (Group 1, Class B) and Immunity
Electrical protection Reverse polarity, over-voltage and short circuit protection
Shock 100 g’s according to IEC770 for mechanical shock
Vibration 5 g’s according to IEC770 under resonance conditions
Weight
(Includes the effects of non-linearity, hysteresis, non-repeatability, zero point
and full scale errors)
repeatability and thermal effects from 50 °F to 104 °F; ±0.15%
full scale for 0 psig to 15,000 psig
2 times full scale for ranges 0 psi to 500 psi through 0 psi to 7,500 psi
1.5 times full scale for 0 psi to 15,000 psi range
*Proof pressure is based on full scale range prior to turndown
4 times full scale for ranges 0 psi to 500 psi through 0 psi to 7,500 psi
3 times full scale for 0 psi to 15,000 psi range
*Burst pressure is based on full scale range prior to turndown
Turn down up to 5:1, no effect on accuracy; turndown greater than 5:1,
accuracy x turndown/5
Span effect is ±0.01% full scale/ °F; Ambient - 4 °F to 158 °F (-20 °C to 70 °C)
Media -22 °F to 221 °F (-30 °C to 105 °C); Storage -31 °F to 176 °F (-35 °C to 80 °C)
stainless steel with 17-4PH stainless steel diaphragm (ranges 0 psig to 500 psig
and higher)
(industrial locations)
Approximately 24 oz.
20
* Unregulated power supplies
755
ORDERING INFORMATION
SERIES 755 Stainless steel threaded
PRESSURE
RANGES
ACCURACY 1 ±0.05% full scale (BFSL)
OUTPUT SIGNAL 1 4 mA to 20 mA, 2-wire
PROCESS CONNECTIONS 2 1/4″ NPT male 8 1/2″ NPT male
ELECTRICAL CONNECTION 24 Cable gland M20x1.5 with internal terminal block, accepts cable diameter from 0.25″ to 0.5″
OPTION ORF Threaded Orifice
Specify actual calibration, otherwise transmitter will be set for full scale range
Please consult your local NOSHOK Distributor or NOSHOK, Inc. for availability and delivery information.
5 0 psig to 5 psig 500 0 psig to 500 psig 15000 0 psig to 15,000 psig 250A 0 psia to 250 psia
25 0 psig to 25 psig 1500 0 psig to 1,500 psig 5A 0 psia to 5 psia
100 0 psig to 100 psig 3000 0 psig to 3,000 psig 25A 0 psia to 25 psia
250 0 psig to 250 psig 7500 0 psig to 7,500 psig 100A 0 psia to 100 psia
psig = gauge pressure psia = absolute pressure
755 – 500 – 1 – 1 – 8 – 24 – ORFEXAMPLE
Series ........................................................ 755
Pressure range .................. 0 psig to 500 psig
Accuracy .............................±0.05% full scale
Output signal ..........................4 mA to 20 mA
Process connection ...............1/2″ NPT Male
Electrical connection .................Cable gland
Option ................................... Threaded orifice
SERIES
ORDERING INFORMATION
DIMENSIONS
WIRING DIAGRAMS
ELECTRICAL CONNECTIONS
1.06" HEX
(27 mm)
1/2" NPT
1.06"
(27 mm)
3.39" sq
(86 mm)
Outline Dimensions
5.32"
(135 mm)
0.75"
(19 mm)
WIRING DIAGRAM
Wiring
+ Supply L+
+ Output L−
Ground
Test Circuit
Internal Junction Box
|
4.80"
(122 mm)
NOTE
See 621/622 Series
for G1/2B and G1B
front flush process
connection dimensions
pg. 29
21
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