CNTD CJY-S long range cylindrical inductive proximity sensors detect metal at 2–25mm nominal distances in M8, M12, M18 and M30 housings. Flush and nonflush heads combine nickel-plated brass bodies, red operating LEDs and IP67 protection. The manufacturer describes nominal sensing distances approximately 1.5–2 times those of its existing standard models; choose the actual operating gap from the model-specific setting range below.
The listed models use 10–30VDC transistor circuits. DNA/DNB are NPN NO/NC; DPA/DPB are PNP NO/NC. DNC/DPC provide complementary NO+NC outputs and require four conductors. M8 models list single outputs only.
| Housing and sensing distance | NPN models | PNP models |
|---|---|---|
| M8 / 2mm, flush | CJY08S-02DNA CJY08S-02DNB | CJY08S-02DPA CJY08S-02DPB |
| M8 / 4mm, nonflush | CJY08S-04DNA CJY08S-04DNB | CJY08S-04DPA CJY08S-04DPB |
| M12 / 4mm, flush | CJY12S-04DNA CJY12S-04DNB CJY12S-04DNC | CJY12S-04DPA CJY12S-04DPB CJY12S-04DPC |
| M12 / 8mm, nonflush | CJY12S-08DNA CJY12S-08DNB CJY12S-08DNC | CJY12S-08DPA CJY12S-08DPB CJY12S-08DPC |
| M18 / 10mm, flush | CJY18S-10DNA CJY18S-10DNB CJY18S-10DNC | CJY18S-10DPA CJY18S-10DPB CJY18S-10DPC |
| M18 / 16mm, nonflush | CJY18S-16DNA CJY18S-16DNB CJY18S-16DNC | CJY18S-16DPA CJY18S-16DPB CJY18S-16DPC |
| M30 / 20mm, flush | CJY30S-20DNA CJY30S-20DNB CJY30S-20DNC | CJY30S-20DPA CJY30S-20DPB CJY30S-20DPC |
| M30 / 25mm, nonflush | CJY30S-25DNA CJY30S-25DNB CJY30S-25DNC | CJY30S-25DPA CJY30S-25DPB CJY30S-25DPC |
| Group | Nominal distance | Setting distance | Standard iron target | Average response frequency |
|---|---|---|---|---|
| CJY08S-02 | 2mm | 0–1.05mm | 8×8×1mm | 450Hz |
| CJY08S-04 | 4mm | 0–2.1mm | 400Hz | |
| CJY12S-04 | 4mm | 0–2.8mm | 12×12×1mm | |
| CJY12S-08 | 8mm | 0–4.9mm | 25×25×1mm | 300Hz |
| CJY18S-10 | 10mm | 0–7mm | 20×20×1mm | |
| CJY18S-16 | 16mm | 0–10.5mm | 40×40×1mm | 200Hz |
| CJY30S-20 | 20mm | 0–11.9mm | 45×45×1mm | 100Hz |
| CJY30S-25 | 25mm | 0–17.5mm | 75×75×1mm |
Use the stated setting range directly; it is not a single fixed percentage of nominal distance across this family. Response frequency is an average measured with the specified standard target, spacing between successive targets equal to twice the target width, and a sensing gap of half the nominal distance.
| Item | Specification for listed NPN / PNP models |
|---|---|
| Operating voltage / control output | 10–30VDC; 200mA maximum |
| Leakage current / residual voltage | ≤10mA / ≤1V |
| Hysteresis | ≤10% of nominal sensing distance |
| Temperature influence | Within ±10% of the sensing distance at 20°C over −25 to +70°C |
| Protection circuit | Surge, reverse-polarity and overcurrent protection |
| Enclosure protection / indicator | IP67; red operating LED |
| Operating / storage temperature | −25 to +70°C / −30 to +80°C, without icing |
| Humidity | 35–95%RH, without condensation |
| Insulation resistance | ≥50MΩ at 500VDC |
| Dielectric strength | 1500VAC, 50/60Hz, 1min |
| Vibration | 1mm amplitude, 10–55Hz swept over 1min, 2h per X/Y/Z direction |
| Shock | 500m/s², approximately 50G, three times per X/Y/Z direction |
| Materials | Nickel-plated brass case and nuts; nickel-plated iron washers; PBT sensing face |
| Housing | Outside diameter | Length | Conductors | Strands per conductor |
|---|---|---|---|---|
| M8 | 2.8mm | 2m | 3P | 22 |
| M12 | 3.8mm | 3P for single NO/NC; 4P for NO+NC | 25 | |
| M18 / M30 | 4.8mm | 30 |
The cable specification identifies AWG22, 0.1mm individual strand diameter and 1.25mm conductor insulation outside diameter. The 22/25/30 figures are strand counts within each conductor. Standard cable is gray PVC; black oil-resistant PVC is also described.
| Position | Field | Known choices |
|---|---|---|
| 1 | CJ | Inductive sensing |
| 2 | Shape / housing | Y=cylindrical metal. The guide additionally labels RG as cylindrical stainless steel and RS as cylindrical plastic; full models in this selection use Y. |
| 3 | Size | 08=M8; 12=M12; 18=M18; 30=M30 |
| 4 | S | Long range type |
| 5 | Thread length | Blank=standard; L=long thread. Illustrated dimensions apply to the standard bodies. |
| 6 | Detection distance | 02=2mm; 04=4mm; 08=8mm; 10=10mm; 16=16mm; 20=20mm; 25=25mm |
| 7 | Supply | D=10–30VDC for all listed models. A=90–250VAC and E=20–60VDC are general guide options, without corresponding full models in these tables. |
| 8 | Output | N=NPN; P=PNP. K=AC two-wire and L=DC two-wire are described in the general guide, without full two-wire models in this selection. |
| 9 | State | A=NO; B=NC; C=NO+NC, with C limited to the groups that list it |
| 10 | Connection | Blank=free-ended cable; M=straight male M12 four-pin A-coded connector. M-type, DT, AMP and SM connector configurations also appear with undefined individual subcodes. |
| 11 | Cable material | Blank=PVC; U=PUR; VP=shielded PVC; UP=shielded PUR |
| 12 | Lead length | Blank is shown for a direct M-type connector body; L1–L5 are lead-length choices, with L1=1m and lengths not restricted to L5. Standard prewired models have 2m cable. |
| Group / mounting | Thread | Overall axial reference | Thread reference | Front projection | Nut reference |
|---|---|---|---|---|---|
| CJY08S-02, flush | M8×1 | 52mm | 38mm | Flush | Ø15mm; 13mm across flats; 3mm thick |
| CJY08S-04, nonflush | 47mm | 32mm | 5mm | ||
| CJY12S-04, flush | M12×1 | 58mm | 38mm | Flush | Ø21mm; 17mm across flats; 4mm thick |
| CJY12S-08, nonflush | 53mm | 32mm | 7mm | ||
| CJY18S-10, flush | M18×1 | 66mm | 38mm | Flush | Ø29mm; 24mm across flats; 4mm thick |
| CJY18S-16, nonflush | 68mm | 32mm | 10mm | ||
| CJY30S-20, flush | M30×1.5 | 64mm | 38mm | Flush | Ø41mm; 36mm across flats; 5mm thick |
| CJY30S-25, nonflush | 59mm | 32mm | 11mm |
Dimensions follow the illustrated axial endpoints, excluding the free cable. The attachment retains complete drawings of the sensing head, cable exit, indicator and nut positions.
All values are millimeters. A is face-to-face spacing; B is parallel spacing; n is the head-exposure reference; Ød is the surrounding-metal opening diameter; ℓ and m follow the axial and surrounding-metal endpoints in the attached drawing.
| Group | A | B | n | Ød | ℓ | m |
|---|---|---|---|---|---|---|
| CJY08S-02 | 9 | 16 | 0 | 8 | 4.5 | 12 |
| CJY08S-04 | 12 | 24 | 8 | 24 | 6 | 24 |
| CJY12S-04 | 24 | 24 | 0 | 12 | 12 | 18 |
| CJY12S-08 | 48 | 36 | 11 | 36 | 24 | 36 |
| CJY18S-10 | 42 | 36 | 0 | 18 | 21 | 27 |
| CJY18S-16 | 84 | 54 | 14 | 54 | 42 | 54 |
| CJY30S-20 | 90 | 60 | 0 | 30 | 45 | 45 |
| CJY30S-25 | 150 | 90 | 15 | 90 | 75 | 90 |
For single outputs, brown is +V, blue is 0V and black is the switching output. An NPN load connects between +V and black; a PNP load connects between black and 0V. In the optional M12 single-output connector diagram, pin 1 is brown, pin 3 is blue and pin 4 is black. The diagrams do not assign the extra conductor of NO+NC models.
| External device example | Brown / blue supply leads | Black output lead |
|---|---|---|
| PA10-U input 1 | 9 (+12V) / 10 (GND) | 11 (IN1) |
| PA10-U input 2 | 13 (+12V) / 14 (GND) | 15 (IN2) |
| FX4 counter | 10 (+12V) / 11 (0V) | 8 (CP1) |
The FX4 drawing has a separate 100–240VAC counter supply; the sensor receives 12VDC in that example. For a connector-terminated configuration, the installation note gives 0.39–0.49N·m tightening torque and calls for securing the cable connection with tape where vibration occurs. Circuit, connector-face and NO/NC timing diagrams remain in the attachment.
The guide references CCC to GB/T14048.10 and TÜV/CE to EN60947-5-2, without supplying supporting certification documents. Utilization references are DC-13 at 10–30VDC, 200mA and AC-140 at 24–250VAC, 200mA; the AC reference does not create an AC model in the DC selection above.
Use for ordinary industrial metal-position sensing within the specified target, gap, load and mounting conditions. Regional specifications can differ. The manufacturer excludes personnel-safety functions, exceptionally high-reliability nuclear, gas and power systems, harsh outdoor or contaminated environments, fire or explosion hazards, strong acids or alkalis, and military or aerospace applications unless specifically designed and confirmed for that purpose.
