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Hazardous Location

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621/622 Series Explosion-Proof Pressure Transmitters

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Application Brochures
Oil & Gas
Water/
Wastewater
  • Vacuum and compound ranges through 0 psig to 15,000 psig; absolute ranges from 0 psia to 15 psia through 0 psia to 100 psia
  • Current and voltage outputs available
  • 316 stainless Steel and Elgiloy wetted parts
  • Factory Mutual and Canadian Standards Association approved
  • CE compliant to suppress RFI, EMI and ESD
  • NACE MR0175/ISO 15156 compliant
  • NSI/ISA-12.27.01 approved single seal

NOSHOK 621 and 622 Series transmitters are Factory Mutual and Canadian Standards Association approved for use in hazardous location applications as follows:

  • Explosion-proof with entity approved for: Class I, Division 1, Groups A, B, C and D.
  • Dust Ignition-proof with entity approval for class II/III, Division 1, Groups E, F and G.
  • Maximum electrical ratings 30V, 20 mA.
  • CE compliant with pressure equipment directive 2014/68/EU.
  • ANSI/ISA-12.27.01, Approved single seal.

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SERIES                    621 Stainless steel threaded connection  622  316 Stainless steel flush diaphragm 622H Hastelloy C flush diaphragm
PRESSURE
RANGES
30vac -30 inHg to 0 psig 5 0 psig to 5 psig 300 0 psig to 300 psig 6000 0 psig to 6,000 psig
30/30 -30 inHg to 30 psig 10 0 psig to 10 psig 500 0 psig to 500 psig 8000 0 psig to 8,000 psig
30/60 -30 inHg to 60 psig 15 0 psig to 15 psig 1000 0 psig to 1,000 psig 10000 0 psig to 10,000 psig
30/100 -30 inHg to 100 psig 30 0 psig to 30 psig 1500 0 psig to 1,500 psig 15000 0 psig to 15,000 psig
30/160 -30 inHg to 160 psig 60 0 psig to 60 psig 2000 0 psig to 2,000 psig 15A 0 psia to 15 psia
30/200 -30 inHg to 200 psig 100 0 psig to 100 psig 3000 0 psig to 3,000 psig 15A 0 psia to 15 psia
30/300 -30 inHg to 300 psig 200 0 psig to 200 psig 5000 0 psig to 5,000 psig 100A 0 psia to 100 psia
psig = gauge pressure           psia = absolute pressure           Other ranges available upon request    
NOTE: 622 Series is available for pressure ranges up to 0 psig to 8,000 psig    
ACCURACY 1 ± 0.25% full scale (BFSL)          
OUTPUT SIGNALS 1 4 mA to 20 mA, 2-wire 3 1 Vdc to 5 Vdc, 3-wire, low power 31 0.5 Vdc to 4.5 Vdc, 3-wire , low power
  2 0 Vdc to 5 Vdc, 3-wire 5 0 Vdc to 10 Vdc, 3-wire        
PROCESS CONNECTIONS 2 1/4" NPT male 11 G1/2B*
  8 1/2" NPT male 13 G1B (622 Series only, <30 psig)
ELECTRICAL CONNECTIONS 6 1/2" NPT male conduit with 6' integral cable 37 1/2" NPT male conduit with 6' flying leads with epoxy seal
OPTIONS ST8 Threaded Orifice
(621 Series only)
20 20' Cable/lead
(attached to electrical
connection 6 or 37)
30 30' Cable/lead
(attached to electrical
connection 6 or 37)
 

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SPECIFICATIONS
Output signals 4 mA to 20 mA, 2-wire; 1 Vdc to 5 Vdc, 3-wire; 0.5 Vdc to 4.5 Vdc, 3-wire
Pressure ranges Vacuum through 0 psi to 15,000 psi
Absolute from 0 psia to 15 psia through 0 psia to 100 psia
Accuracy ±0.25% full scale (BFSL) (Includes the effects of non-linearity, hysteresis,
non-repeatability, zero point and full scale errors)
Stability ≤±0.2% full scale for 1 year, non-accumulating
Response time ≤1 ms (between 10% and 90% full scale)
Service life >100,000,000 load cycles
Temperature ranges Compensated            32 °F to 176 °F (0 °C to 80 °C)
Zero effect                 ±0.011% full scale/ °F
Span effect                ±0.011% full scale/ °F
Media                        T6: -40 °F to 131 °F (-40 °C to 55 °C)
                                  T5: -40 °F to 158 °F (-40 °C to 70 °C)
                                  T4: -40 °F to 212 °F (-40 °C to 100 °C)
Ambient                     T6: -40 °F to 140 °F (-40 °C to 60 °C)
                                  T5: -40 °F to 167 °F (-40 °C to 75 °C)
                                  T4: -40 °F to 221 °F (-40 °C to 105 °C)
Storage                       -40 °F to 221 °F (-40 °C to 105 °C)
Power requirement* 10 Vdc to 30 Vdc (4 mA to 20 mA, 2-wire)
6 Vdc to 30 Vdc (1 Vdc to 5 Vdc, 3-wire, 0.5 Vdc to 4.5 Vdc, 3-wire)
14 Vdc to 30 Vdc (0 Vdc to 10 Vdc, 3-wire)
Load limitations ≤ (VPower-10)/0.020 Amp for 4 mA to 20 mA
≥ 10,000 Ω for 1 Vdc to 5 Vdc, 3-wire
Proof pressure 3 times full scale for ranges 0 psi to 15 psi through 0 psi to 200 psi
1.75 times full scale for ranges 0 psi to 300 psi through 0 psi to 10,000 psi
1.5 times full scale for 0 psi to 15,000 psi
Burst pressure 3.8 times full scale for ranges 0 psi to 15 psi through 0 psi to 200 psi
4 times full scale for ranges 0 psi to 300 psi through 0 psi to 10,000 psi
3 times full scale for 0 psi to 15,000 psi
Measuring element 621 Series is 316 stainless steel for ranges up through 0 psi to 300 psi,
316 stainless steel with Elgiloy ranges 0 psig to 500 psig and higher;
622 Series is 316 stainless steel with NBR o-ring; (FKM o-ring optional)
Connection 316 stainless steel
Housing material 316 stainless steel
Environmental rating IP67
Electromagnetic rating CE compliant to EMC norm EN 61326:2014/A1:1998
RFI, EMI and ESD protection
Electrical protection Reverse polarity, over-voltage and short circuit protected
Shock 1,000 g’s according to IEC 60068-2-27
Vibration 20 g’s according to IEC 60068-2-6
Weight Approximately 12 oz.

Options & Accessories

  • SS Threaded Orifice - 621 Only (ST8)
  • 20 foot cable/lead - attached to 1/2" NPT Male Conduit w/ 6 foot integral cable or 1/2" NPT Male Conduit w/ 6 foot flying lead and epoxy seal (20)
  • 30 foot cable/lead - attached to option 6 or 37 (30)

NOSHOK offers multiple assembly options to meet your specific system requirements. Consult factory to discuss your customized solution.

For example, you can simplify your system with this easy-to-install solution from NOSHOK. Three simple components that require a single threaded connection in your piping system will provide local indication, analog output and block/isolate with bleed function.This product grouping is an ideal solution for a variety of applications including oil and gas, and is available in several high pressure ranges, including 5,000, 10,000 and 15,000 psi. Special design for Shale Gas applications.

This example represents a general solution; however, we offer a diverse range of gauges, transmitters and valves which are available with a variety of connection options and ranges to suit your needs. (Photo shows 40-400 Series Pressure Gauge (Local Indication), 621 Series Pressure Transmitter (Control Output), and 200 Series Multi-Port Valve (Block/Isolate & Bleed).

NOSHOK Digital Indicators provide local indication for pressure, level and temperature transmitters.

View NOSHOK's Digital Indicators offering

  • Resist clogging and are self-cleaning
  • Five different sized pistons included with each snubber to ensure the correct amount of snubbing for virutally every application
  • Available in Brass and 316 Stainless Steel in 1/4" NPT, 1/2" NPT or SAE J1926-3: 7/16-20
  • Weight approximately 0.2 lb. for 1/4" & 7/16", and approximately 0.4 lb. for 1/2"​​​​​​

Specifications

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Cost effective solution to protect expensive instrumentation
  • Increases gauge readability by smoothing out pressure surges, pulsations and spikes
  • 5 basic elements available for each snubber to accommodate specific application needs
  • Snubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous element
  • Exotic materials or intermediate disc grades available
  • Provides long service life with no moving parts to wear out
  • Weight approximately 0.2 lb. for 1/4" & 7/16", and approximately 0.4 lb. for 1/2

Specifications

Dimensions

Replacement Disc Options

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Protect the instrument from the damaging effects of high temperature steam
  • Recommended for use in all steam applications
  • Available in 1/4" and 1/2" NPT sizes in welded steel, welded 316 Stainless Steel or seamless 316 Stainless Steel with ratings to 3,800 psi @ 850 ºF

Specifications

Dimensions

Steam Syphons Temperature 1/4" NPT vs. Pressure charts

Steam Syphons Temperature 1/2" NPT vs. Pressure charts

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Temperature ratings: 15,000 psi @ 200 °F and 3,000 psi @ 1,000 °F
  • Used with gauges and gauge valves to adjust the line of sight
  • Rotates 360° to allow the connected instrument to be positioned in the desired direction
  • The pressure connection is achieved with a tapered cone style compression fitting simply by tightening the swivel hex nut
  • All 316 Stainless Steel construction
  • Standard with 1/2" NPT male process – 1/2" NPT female instrument connections
  • Also available with 1/4" NPT connections, same specifications apply
  • Weight approximately 0.8 lb.

Swivel Adaptor Dimensions


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov