Within the CD 375 catalogue, the CD-375-100 sits in the middle: its ±0.100 in (±2.5 mm) full-scale travel covers the range where many valves, presses and test fixtures actually move, without jumping to the long-body 250 or 500 variants. The suffix -006 on 010312360006-M simply specifies a metric-threaded core (M.C.), so the moving slug screws straight onto an M2 x 0.4 push-rod; the bore is left in its standard finish on this version.

The sensing principle is the classic differential transformer. An a.c. carrier energises the centre (primary) coil, and two outer coils pick up a voltage whose balance depends on where the iron core sits. Wire those two pickups against each other and the net output swings positive on one side of centre, negative on the other, and reads zero at the midpoint. Nothing rubs, so there is no track to wear and no electrical contact to the moving part - the figure of merit is repeatability, and here it stays inside 0.01% of full scale.

Mechanically the part is the familiar 9.5 mm (3/8 in) tube: glass-filled bobbins for thermal stability and a stainless shell that doubles as a magnetic screen against nearby a.c. fields, with the winding pack sealed to IEC IP-61. It runs -55 °C to +105 °C as standard (the family extends to +200 °C and 20 kpsi in special builds). The CD-375-100-006 is a current catalogue item carried through distribution; In Fortune stocks and cross-references it for new builds and for servicing installed equipment.

Note: Figures are read from the TE / Macro Sensors CD 375 datasheet (ENG_DS_CD-CDM_A2), CD-375-100 column, with the -006 metric core. Operate only from a differential-input LVDT conditioner; do not pair with ratiometric front ends. Verify against the live datasheet before release.

This range keeps the 0.375 in (9.5 mm) diameter shell but is longer than the short-stroke units: dimension A measures 1.00 in (25.4 mm), the mounting-thread span (dimension B) is 0.64 in (16.3 mm), and the coil-centre dimension N is 0.50 in (12.7 mm). The guide bore for the core runs about 0.134 / 0.125 in (3.4 / 3.18 mm), with the usual 0.012 in (0.3 mm) radial clearance to the slug.

Both ends are tapped for the M2 x 0.4 (6H) mount to a depth of at least 0.25 in (6.4 mm), so the body can be clamped centrally or held at the ends. On this -006 order the separate core carries the matching M2 x 0.4 thread. The six #32 AWG Teflon-jacketed leads, 305 mm (12 in) long, leave from one end.

Six leads come out of the body: one pair drives the primary, and two pairs are the secondaries. The conditioner energises the primary and reads the difference of the two secondary voltages, which is why the two pickups are wired to oppose each other.

• YELLOW / BROWN - primary: excitation pair, fed from the conditioner's oscillator (3.0 Vrms, 2.5 - 3.0 kHz).
• RED / BLUE - secondary 1: first pickup winding (RED is the output lead, BLUE the inner lead).
• GREEN / BLACK - secondary 2: second pickup winding (GREEN inner, BLACK output).
• Series-opposed hookup: tie BLUE to GREEN; the differential signal then appears across RED and BLACK and crosses zero with the core centred.

If the measured travel does not match ±0.100 in, step along the CD 375 / CDM 375 ladder - the bodies grow with the stroke while the wiring and 3/8 in diameter stay constant. The shorter units give more output per unit travel; the longer ones cover more motion. The -006 metric core (and the -010 Teflon bore or -016 for both) can be ordered on any of them.

Ordering options: -006 metric core (this part), -010 Teflon bore liner, or -016 for both; the option set is unavailable on CDM 375-500 and CDM 375-1000. Confirm stroke, body length and thread before swapping ranges.

The CD and CDM LVDT lines come from Macro Sensors, a US LVDT house whose products passed into Measurement Specialties and then into TE Connectivity (NYSE: TEL), where they are catalogued under the AST position-sensor range. Decades of LVDT manufacturing sit behind the series, which is why even a mid-range part like the -100 carries options for metric cores, Teflon liners, vented shells and extended temperature or pressure ratings.

For the CD-375-100-006, In Fortune supplies genuine TE/Macro stock with traceable sourcing and supports range and option selection across the CD 375 family, including pairing advice for compatible LVDT signal conditioners.