Product Overview: TEBAOFLEX 300/500V PE/PVC shielded and screened instrumentation cable transmits low-level analog (4–20 mA, HART), thermocouple/transmitter, and digital PLC/DCS control signals across fixed industrial routes. Combining low-capacitance polyethylene (PE) core insulation, ≤100 mm twisted-pair lay length, and 100%-coverage aluminium/polyester foil screening (OS or IS+OS), it is supplied unarmoured or with galvanized steel round-wire armour (GSWA / SWA).
1. Application & Screening Variant Selection
In power plants, chemical processing units, water treatment works, and onshore oil/gas terminals, selecting between collective screening (OS) and individual-plus-overall screening (IS+OS) depends on whether adjacent pairs carry mixed signal types or require pair-to-pair crosstalk isolation.
| Variant & Cutaway | Pair Format | Screen Architecture | Armour & Bedding | Primary Circuit & Route Duty |
|---|---|---|---|---|
OS, Unarmoured | Single pair (1P) or Multi-pair (2P–24P+) | Overall Al/PET foil tape + 0.5 mm² tinned copper drain wire | Unarmoured; PVC outer sheath directly over collective screen | Indoor marshalling cabinets, enclosed conduits, and protected trays carrying uniform signal loops |
IS+OS, Unarmoured | Multi-pair (2P–24P+) | Individual Al/PET foil + drain wire on each pair, plus overall foil + drain wire | Unarmoured; PVC outer sheath over collective screen | Protected trays/ducts carrying mixed 4–20 mA, HART, pulse, or switching signals requiring zero inter-pair crosstalk |
OS, Armoured (GSWA) | Single pair (1P) or Multi-pair (2P–24P+) | Overall Al/PET foil tape + 0.5 mm² tinned copper drain wire | Black PE inner bedding + galvanized steel round-wire armour | Outdoor pipe racks, open cable ladders, and industrial zones requiring crush, impact, or rodent protection |
IS+OS, Armoured (GSWA) | Multi-pair (2P–24P+) | Individual Al/PET foil + drain wire on each pair, plus overall foil + drain wire | Black PE inner bedding + galvanized steel round-wire armour | Heavy-duty process plant and petrochemical multi-pair home-run trunks needing both crosstalk isolation and mechanical armour |
Engineering Boundary Note: An IS-only construction (individual screens without a collective overall screen) or triad (3-core RTD) layout is not part of the four standard builds above, but can be manufactured against an approved project drawing. For high-temperature Pt100 RTD circuits, see our 200°C shielded RTD sensor cable; for solid vs. stranded refinery pair criteria, review our gas and oil resistant solid vs. stranded pair cable guide.
2. Cable Construction (Inside-to-Outside Physical Hierarchy)
Every layer below corresponds directly to the four documented PE/PVC instrumentation builds manufactured under SKU family IS-OS-ISOS-PE-PVC:
3. Technical Characteristics
| Technical Parameter | Specification / Engineering Basis |
|---|---|
| Rated Voltage (U0/U) | 300/500 V AC |
| Standard Conductor Cross-Sections | 0.5 mm² (20 AWG), 0.75 mm² (18 AWG), 1.0 mm² (17 AWG), 1.5 mm² (≈16 AWG), 2.5 mm² (≈14 AWG) |
| Maximum Pair Lay Length | ≤ 100 mm (minimizes electromagnetic coupling in industrial trays) |
| Drain Wire Size & Material | 0.5 mm² tinned annealed stranded copper at each specified foil screen level |
| Typical Operating Temperature | -20°C to +70°C fixed installation (PE insulation thermal limit +70°C; XLPE +90°C builds available on request) |
| Minimum Bending Radius (Reference) | Unarmoured: ≥ 6 × overall cable diameter (OD) | Armoured (GSWA): ≥ 10 × overall cable diameter (OD) |
| Compatible Reference Standards | Engineered against BS 5308 Part 1 (Type 1 Unarmoured / Type 2 Armoured), EN 50288-7, and IEC 60332-1-2 / IEC 60332-3 upon order confirmation |
4. Popular Ordering Configurations & TEBAOFLEX Part Matrix
The matrix below lists frequently ordered PE/PVC 300/500V instrumentation configurations for EPC and OEM procurement. Exact outer diameter (OD), copper weight, and drum weight are confirmed on the order-specific approval drawing according to your required insulation/sheath wall standard.
| TEBAOFLEX Model Code | Pairs × Size (mm²) | Screening | Armouring | Drain Wire | Typical Industrial Use |
|---|---|---|---|---|---|
| TF-IC-OS-01P05 | 1 × 2 × 0.5 mm² | OS (Collective Foil) | Unarmoured | 1 × 0.5 mm² TC | Single 4–20 mA transmitter drop to local junction box |
| TF-IC-OS-01P15-SWA | 1 × 2 × 1.5 mm² | OS (Collective Foil) | PE Bedding + GSWA | 1 × 0.5 mm² TC | Long-run outdoor field instrument loop / solenoid control |
| TF-IC-ISOS-02P075 | 2 × 2 × 0.75 mm² | IS+OS (Pair + Overall) | Unarmoured | 0.5 mm² TC per screen | Dual-channel analyzer or flowmeter indoor tray wiring |
| TF-IC-ISOS-02P15-SWA | 2 × 2 × 1.5 mm² | IS+OS (Pair + Overall) | PE Bedding + GSWA | 0.5 mm² TC per screen | Armoured dual-loop field transmitter feeder on pipe racks |
| TF-IC-OS-05P10 | 5 × 2 × 1.0 mm² | OS (Collective Foil) | Unarmoured | 1 × 0.5 mm² TC | Multi-point skid instrumentation to PLC cabinet |
| TF-IC-ISOS-05P10-SWA | 5 × 2 × 1.0 mm² | IS+OS (Pair + Overall) | PE Bedding + GSWA | 0.5 mm² TC per screen | Armoured 5-pair junction-box trunk in process units |
| TF-IC-ISOS-10P075 | 10 × 2 × 0.75 mm² | IS+OS (Pair + Overall) | Unarmoured | 0.5 mm² TC per screen | Control-room marshalling trunk for mixed analog loops |
| TF-IC-ISOS-10P15-SWA | 10 × 2 × 1.5 mm² | IS+OS (Pair + Overall) | PE Bedding + GSWA | 0.5 mm² TC per screen | Heavy-duty 10-pair armoured home-run cable |
| TF-IC-ISOS-12P10-SWA | 12 × 2 × 1.0 mm² | IS+OS (Pair + Overall) | PE Bedding + GSWA | 0.5 mm² TC per screen | 12-pair field junction box to DCS cabinet trunk |
| TF-IC-ISOS-20P05 | 20 × 2 × 0.5 mm² | IS+OS (Pair + Overall) | Unarmoured | 0.5 mm² TC per screen | High-density indoor DCS / SCADA signal backbone |
| TF-IC-ISOS-24P10-SWA | 24 × 2 × 1.0 mm² | IS+OS (Pair + Overall) | PE Bedding + GSWA | 0.5 mm² TC per screen | 24-pair armoured plant-wide instrumentation feeder |
Looking for other control or petrochemical signal constructions? Browse our industrial and control cables catalog or read our petrochemical instrumentation pair-cable selection guide.
5. Frequently Asked Questions
What is the difference between OS and IS+OS shielded instrumentation cable?
OS (Overall Screened, or CAM) places one collective aluminium/polyester foil tape and a 0.5 mm² tinned copper drain wire around all assembled pairs to shield against external electromagnetic interference. IS+OS (Individually and Overall Screened, or IAM/PiMF) wraps a dedicated foil screen and drain wire around each twisted pair plus an overall foil screen, eliminating pair-to-pair crosstalk when multiple analog, HART, or pulse loops share one cable.
When should galvanized steel-wire armoured (SWA) instrumentation cable be specified?
Specify the armoured build (black PE inner bedding + galvanized steel round-wire armour) when cables run along outdoor pipe racks, open ladders, direct-burial ducts, or plant areas exposed to crushing loads, falling tools, or rodents. Always match SWA brass/stainless Ex or industrial cable glands to the bedding and overall diameters.
Should I specify stranded copper or solid pair instrumentation conductors?
The four standard constructions on this page use circular stranded copper conductors (Class 2), which pull easily around conduit bends, tolerate moderate equipment vibration, and clamp securely in marshalling terminals. If your project specification strictly mandates Class 1 solid copper pairs or 3-wire RTD triads, request a custom build drawing from our engineering team.
Is this cable automatically certified for intrinsically safe (Ex i) or BS 5308 / EN 50288-7 circuits?
No cable construction automatically certifies a complete intrinsically safe system. Where your project requires RAL 5015 blue outer sheath identification for Ex i circuits, verified mutual capacitance (pF/m) and L/R ratios, or manufacture to a specific edition of BS 5308 Part 1 or EN 50288-7, include those requirements in your inquiry for formal datasheet sign-off.
What pair counts, conductor sizes, and minimum order quantities (MOQ) are available?
OS builds cover single-pair (1P) and multi-pair (2P–24P+) cables; IS+OS builds cover multi-pair (2P–24P+) cables across 0.5, 0.75, 1.0, 1.5, and 2.5 mm² (see our AWG to mm² conversion chart for 20–14 AWG equivalents). Typical MOQ starts at 100–300 meters per specification depending on pair count and armouring.
Request Order-Specific Drawing, Datasheet & Project Quotation
Send our engineers your pair count (1P–24P+), conductor size (0.5–2.5 mm² / AWG), OS vs. IS+OS screening, SWA armour preference, sheath color, target standard (BS 5308 / EN 50288-7), and total meterage for a 24-hour technical review.
