Home | Hazardous Location Pressure Transmitters | 621/622 Series Explosion-Proof
621/622 Series Explosion-Proof Pressure Transmitters

- Designed for applications that require pressure measurement in hazardous locations
- Accuracy to ±0.25% full scale (BFSL)
- Wide variety of pressure ranges available
- Advanced diffused semi-conductor and sputtered thin film sensor for maximum stability
- Available with a standard threaded connection as well as a flush diaphragm configuration
- Welded 316 stainless steel, and Elgiloy construction with no internal o-rings, gaskets or seals
- 1/2" NPT conduit connection
- Low power voltage outputs available
- Incorporate significant levels of RFI, EMI, and ESD protection
- CE compliant to suppress RFI, EMI, and ESD
- Factory Mutual and Canadian Standards approved
- NACE MR0175/ISO 15156 compliant
- ANSI/ISA-12.27.01-2003 approved single seal

ORDERING INFORMATION
| SERIES | 621 | Stainless steel threaded connection | 622S | 316 Stainless steel flush diaphragm | 622H | Hastelloy C flush diaphragm | ||
|
PRESSURE RANGES |
30vac | -30 inHg to 0 psig | 15 | 0 psig to 15 psig | 300 | 0 psig to 300 psig | 5000 | 0 psig to 5,000 psig |
| 30/30 | -30 inHg to 30 psig | 30 | 0 psig to 30 psig | 500 | 0 psig to 500 psig | 6000 | 0 psig to 6,000 psig | |
| 30/60 | -30 inHg to 60 psig | 60 | 0 psig to 60 psig | 1000 | 0 psig to 1,000 psig | 8000 | 0 psig to 8,000 psig | |
| 30/100 | -30 inHg to 100 psig | 100 | 0 psig to 100 psig | 1500 | 0 psig to 1,500 psig | 10000 | 0 psig to 10,000 psig | |
| 30/200 | -30 inHg to 200 psig | 200 | 0 psig to 200 psig | 2000 | 0 psig to 2,000 psig | 15000 | 0 psig to 15,000 psig | |
| 3000 | 0 psig to 3,000 psig | 15A | 0 psia to 15 psia | |||||
| psig = gauge pressure psia = absolute pressure Other ranges available upon request | 100A | 0 psia to 100 psia | ||||||
| NOTE: Series 622 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 male flush (model 622 only) (pressure ranges less than 0 psi to 30 psi and higher) | ||||
| 8 | 1/2" NPT male | 13 | G1B male flush (model 622 only) (pressure ranges 0 psi to 30 psi) | |||||
| 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 | ORF |
Threaded Orifice (model 621 only) |
20 | 20' cable/lead (attached to options 6 or 37) |
30 | 30' cable/lead (attached to options 6 or 37) |
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Please consult your local NOSHOK Distributor or NOSHOK, Inc. for availability and delivery information.






