Series-IS626

IS626 Intrinsically Safe Pressure Transmitter, 0.25% Accuracy, NEMA 4X

Exceptional accuracy for ensuring tight-control and minimizing costly out of specification conditions
NEMA 4X rated enclosure provides protection in harsh environments permitting outdoor monitoring or in areas where dust and particulate matter exists
Robust sensor provides shock and vibration resistance insuring stability in controlling pressure for process applications

See Product Overview

Series-IS626

From ^SGD 945.76

Shop Models

5 Variations available

See all series options below

Data Sheet

Product Overview

Accuracy ± 0.25 %
Accuracy Detail 0.25% FS
Applications Chemical Refineries, Fluid Measurement and Control, Industrial and Manufacturing
Burst Pressure 150 psi Maximum
Compensated Temperature, Max 176 °F
Compensated Temperature, Min 0 °F
Electrical Connection Cable
Electrical Output 4 to 20 mA
Enclosure Ratings IP66, NEMA Type 4X
Loop Resistance 0 to 900 Ω max
Materials, Wetted 316 Stainless Steel, 316L Stainless Steel
Media Compatibility Clean dry air / inert gas, Clean process / cooling water, Compatible Liquids, Inert / non-reactive gases, Oils / lubricants, Organic solvents, Water
Mounting Orientation Not Position Sensitive
Operating Temperature, Max 176 °F
Operating Temperature, Min 0 °F
Output Detail 4 to 20 mA
Output Signal Current
Power Consumption 38 mA
Measurement Pressure Type Gauge
Process Connection Size 1/4 in
Process Connection Type NPT Male
Proof Pressure Up to 30 psi
Response Time 50 ms
Series ID Series-IS626
Supply Power Type DC
Supply Voltage 10 to 28 Vdc
Thermal Effects ± 0.02% FS/°F (includes zero and span)
Weight 252 g

Supported Applications

The Dwyer Series IS626 Intrinsically Safe Pressure Transmitter converts pressure into a standard 4-20 mA output signal for use in hazardous (classified) locations. Designed to measure compatible gases and liquids, the series is UL listed for intrinsic safety ('ia') and suitable for industrial environments requiring protection against ignition sources.

Documented approval classifications include:

Class I Div. 1 Groups A,B,C,D
Class II Div. 1 Groups E,F,G
Class III Div. 1
Class I Zone 0 AEx ia IIC T4 Ga
Zone 20 AEx ia IIIC T135°C Da
Ex ia IIC T4 Ga and Ex ia IIIC T135°C Da (Ta = -20°C to 80°C)

Operating Conditions & Performance

The Series IS626 delivers a full-scale accuracy of 0.25% FS, which includes linearity, hysteresis, and repeatability. The compensated temperature range is -4 to 176°F (-20 to 80°C) per the instruction manual or 0 to 176°F (-18 to 80°C) as noted in the datasheet specifications; thermal effect is ±0.02% FS/°F (includes zero and span). The device operates on a power supply of 10-28 VDC with a maximum current consumption of 38 mA.

Performance limits include:

Response Time: 50 msec
Loop Resistance: 0-900 Ω max
Pressure Limits: See Pressure Range Table (ranges available from 0 to 15 psia up to 0 to 8000 psig)
Mounting Orientation: Mount in any position

Configuration Options

The series supports a broad envelope of configurations for process connections, electrical interfaces, and housing styles. Wetted materials are Type 316 or 316L SS.

Process Connections: Available with 1/4" male NPT, female NPT, BSPT male ISO 228 R 1/4", or BSPT female ISO 228 RC 1/4" fittings. The housing features a 1-1/16 [26.99] HEX dimension.
Electrical Connections: Options include a 3 ft cable, extended cables (up to 9'), or a 4-pin M-12 connector. Accessories such as the A-295 Female M-12 Connector and A-231 Shielded Cable are available for specific wiring needs.
Housing: NEMA 4X (IP66) enclosure rated for harsh environments; general purpose housing style (-GH).
Output Signal: 4-20 mA, 2-wire loop powered output.

Key Product Differences

The Series IS626 is configured via a model number guide following the pattern: IS626 - <RANGE> - <HOUSING> - <FITTINGS> - <CABLES AND CONNECTORS> - <ELECTRICAL OUTPUT> - <OPTIONS>.

Key variations include:

Ranges (-00 to -26): Span from 0 to 15 psia through 0 to 8000 psig, covering both absolute and gauge pressure applications.
Fittings (P1-P4): Selection between male/female NPT or BSPT threads determines the process interface geometry.
Cables/Connectors (-E1 to -E6): Choices range from standard 3' cable lengths to Bendex connections, affecting installation flexibility and loop resistance calculations.
Options: An aluminum tag (Suffix 'AT') or NIST traceable calibration certificate can be added. Note that units with the aluminum tag option require removal of the tag prior to installation.