I. Product Positioning
DPI 104-IS is an intrinsically safe explosion-proof version of a high-precision digital standard pressure gauge. IS = Intrinsically Safe (intrinsically safe). It can be used as a local pressure display instrument at the site, or as a portable standard gauge for calibrating pressure transmitters, pressure switches, and local pressure gauges in explosion-hazardous areas of petrochemical, oil and gas, and power plants.
The ordinary blue shell is for the DPI104 standard model, and the yellow shell DPI104-IS is the dedicated model for intrinsically safe explosion-proof applications.
Core Technical Parameters Measurement accuracy
Accuracy: 0.05% FS, including all errors such as non-linearity, hysteresis, repeatability, and temperature drift from -10℃ to 50℃, belonging to the industrial-grade standard calibration table level.
Display: 5-digit high-definition LCD, equipped with 20 pressure bar graphs, allowing for intuitive viewing of pressure proportions.
Support for 11 pressure unit conversions: MPa, bar, psi, kPa, mbar, kg/cm², mmH₂O, mH₂O, mmHg, inHg, inH₂O
Range and Pressure Resistance
Range coverage: Gauge pressure G / Absolute pressure A / Sealed gauge pressure SG selectable, ranging from 0.7 bar to 700 bar (10 psi to 10,000 psi)
Safety Pressure Resistance: Normal range can withstand overload twice the full scale; 1400 bar high-pressure range can withstand 29,000 psi at -10℃ to 50℃, with strong shock resistance
Pressure Interface
≤70 MPa range: Standard 1/4″ NPT or BSPP external threads
100 MPa / 140 MPa high-pressure range: 9/16 × 18 UNF conical threads, can be equipped with various adapters to adapt to on-site pressure connection ports
Media Compatibility
Contacting components: Stainless steel / Inconel Incolar alloy, capable of measuring most corrosive gases, liquids, and vapors
Shell: Anti-static ABS + PC material, IP65 dustproof and waterproof, suitable for outdoor and humid sites
Explosion-proof and Safety Certification (-IS Key)
Obtained ATEX, IECEx, CSA intrinsically safe explosion-proof certifications, explosion-proof level II 1G EEx ia IIC T4/T6
Can be directly used in 0 zone, 1 zone, 2 zone flammable and explosive gas hazardous areas (oil gas stations, hydrogen production stations, chemical explosion-proof workshops)
Communication / External Accessories must use compatible intrinsically safe cables;严禁 connecting ordinary non-explosion-proof cables to hazardous areas
Practical Functions
Pressure switch testing： Automatically captures switch action values (on / off pressure)， making it very convenient to calibrate on-site pressure alarm switches
Peak / trough recording， reset of weight， high and low pressure alarm settings
RS232 serial communication： Combined with SiCal Pro software， can collect data on a computer， generate calibration certificates， and export data for archiving； supports multi-instrument chain serial networking
Built-in rotating adjustable bracket， dial can rotate at multiple angles， facilitating on-site reading
Battery power supply， portable use， no need for external power supply
Typical Application Scenarios (Combined with your previous power plant / petrochemical equipment list)
Unit maintenance calibration： Calibrate Woodward 505XT (8200-1312) speed control system oil pressure and steam pressure measurement points；
Bently pressure auxiliary measurement points， turbine lubricating oil pressure / control oil pressure on-site calibration；
Explosion-proof area local pressure monitoring： hydrogen station， oil gas plant， gas boiler pressure measurement；
Calibrate MTS6 dew point instrument with gas source pressure， various pressure transmitters；
Power plant measurement room as a portable standard meter， conduct instrument periodic verification.
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