Can you manufacture cables for underwater blast testing?
Yes, we specialize in IP68-rated underwater cable assemblies with pressure-resistant connectors and overmolding for submersion environments. Our underwater blasting cable harnesses use marine-grade polyurethane jacketing, SubConn or SeaCon underwater connectors, and are pressure-tested for depths up to 300 meters in explosive testing applications.
What shielding is recommended for VOD sensor cables?
For VOD (Velocity of Detonation) applications using the TDR method, we recommend RG-58 or RG-59 coaxial cable assemblies with 95%+ braid coverage. For the most demanding explosive testing environments, our custom low-loss coax with foil + braid dual shielding provides maximum signal integrity and noise immunity for accurate detonation measurement.
Can you terminate customer-specified connector types?
Customer drawings may identify customer-specified circular or rectangular connector types. We can source and terminate those connector families on a build-to-print basis; the designation identifies the component specification and does not imply program qualification.
What is your minimum order quantity for blasting cable assemblies?
As specialists in high-complexity custom cable harnesses, our MOQ depends on design complexity. For blasting instrumentation wire harness assemblies, we typically start with prototype quantities of 5-10 units for field testing, with production runs scaling to your volume requirements—from dozens to thousands of units.
Can you provide impedance testing reports?
Yes, we provide comprehensive electrical test reports for all signal-critical blasting cable assemblies including TDR impedance measurements, capacitance per foot, insulation resistance, and dielectric withstand voltage (hi-pot) testing. These reports ensure your explosive testing instrumentation meets performance specifications.
How do you ensure low-noise signal transmission in blasting environments?
Our blasting instrumentation cable assemblies employ multiple noise reduction techniques: proper shield termination with 360° connector backshells, twisted pair construction for differential signals, controlled impedance throughout the assembly, star-point grounding architecture, and separation of power/signal conductors for EMI immunity.
What temperature range can your explosive testing cables withstand?
Standard blasting instrumentation cable assemblies operate from -40°C to +85°C. For extreme environments, we offer high-temperature options using PTFE/Teflon insulation rated to +200°C for near-blast instrumentation, or cold-flexible compounds rated to -55°C for arctic blasting operations.
Do you offer field-replaceable connectors for remote blast sites?
Yes, we manufacture blasting cable assemblies to customer specifications that call for field-serviceable connectors, breakaway segments, or modular sections. Build details and service requirements must be defined in the released drawing and BOM.
What are the detailed electrical specifications for VOD coaxial cables?
Our RG-58 VOD sensor cables feature 50Ω characteristic impedance (±2Ω), capacitance of 28.5pF/ft, attenuation <5dB/100m @ 100MHz, velocity of propagation 66%, and voltage rating 1400V RMS. RG-59 options provide 75Ω impedance with 17pF/ft capacitance. All specifications verified via TDR testing with reports provided.
How much vibration and shock can your cables withstand?
Our ruggedized blasting instrumentation cable assemblies are tested to IEC 60068 standards: vibration resistance up to 15G RMS (10-2000Hz), mechanical shock survival >100G half-sine pulses, and drop test compliance from 1.2m. Kevlar strength members provide 200+ lbf tensile strength for pull-through and snagging resistance in mining environments.
What is the expected service life of your blasting cables?
Expected service life depends on application severity. For permanent installations: 5-10 years in controlled environments. For field-deployed VOD measurement cables subjected to blast debris and UV exposure: 2-3 years with proper handling. Underwater assemblies: 3-5 years with periodic seal inspection. MTBF >50,000 mating cycles for connectors. We recommend annual inspection and replacement every 500 blast cycles for safety-critical applications.
Can you provide compatibility with specific VOD equipment brands?
Yes, we manufacture cable assemblies to customer-provided interface specifications for VOD systems such as MREL Speed VOD, Instantel Shot-Plus, MREL μTrap, Handy Logger, and custom DAQ systems. Provide the approved pinout, impedance requirements, drawing, BOM, and equipment model for build-to-print review.