LEFOO LFT6210 Intrinsically Safe Pressure Transmitter
This model-family page is based on the named original LEFOO product specification. The manufacturer may list ordinary and hazardous-area versions separately; do not infer certificate coverage from a maker-family headline.
Manufacturer-specific source data
| Pressure | −100 kPa through 10 kPa to 60 MPa, configured gauge or absolute |
|---|---|
| Accuracy | 0.1%, 0.25% or 0.5% FS depending on range and compensated temperature |
| Output and supply | 4–20 mA two-wire, 15–28 V DC |
| Temperature | Manufacturer lists intrinsically safe unit −40…+60°C, ordinary type −40…+80°C; not interchangeable |
| Protection | IP67 with correctly fitted exit seal |
| Source Ex markings | Maker labels intrinsic-safety gas Ex ia IIC T6 Ga and dust Ex ia IIIC T200 85°C Da; current independent ATEX/IECEx certificate issue and scope NOT verified |
| Ordering distinctions | Ordinary type is not Ex-rated; hazardous area option requires matching complete maker part number, wiring barrier, nameplate and approved schedule |
LFT6210 — intrinsically safe pressure circuit
LFT6210 is marketed for intrinsically safe pressure measurement, where a matching certified barrier, signal circuit and cable parameters are part of the Ex installation. Its maker pressure family extends from vacuum to high pressure but the actual gauge or absolute cell, accuracy class and 4–20 mA loop supply must be selected by order code. Determine the allowable temperature and gas/dust protection marking from the valid model-specific certificate; a picture of the enclosure proves neither entity parameters nor zone suitability.
LEFOO original manufacturer model/technical source
Catalog model identified 23 October 2026; complete original photo, order-code enumeration and exact current approval schedule remain open.
Original intrinsic-safety manual: barrier parameters and limits
The original LEFOO LFT6210 intrinsically safe operation manual specifies manufacturer Ui = 28 VDC, Ii = 93 mA, Pi = 0.65 W, Ci = 0.025 µF, Li = 0.25 mH. These are entity parameters for matching an associated intrinsically safe apparatus, not general power-supply ratings to be applied regardless of barriers. The source states the safety-assessment inequalities Uo≤Ui, Io≤Ii, Po≤Pi, Co≥Ci+Cc and Lo≥Li+Lc. Cable capacitance/inductance and earthing configuration must follow actual certified installation documents.
Original manual limitation: its explosion-protection discussion cites GB/T3836.1 and GB/T3836.4 Chinese national standards and writes manufacturer markings Ex ia IIC T6 Ga and Ex ia IIIC T200 85°C Da. This PDF does not independently demonstrate that an ATEX 2014/34/EU EU-type examination certificate or an IECEx Certificate of Conformity is currently valid for a particular purchased variant. Those issuer numbers and their schedules remain OPEN. Intrinsic-safety unit ambient is the maker-stated −40…+60°C, not the ordinary unit’s wider −40…+80°C limit.