Celesco PT9000 Series · Cable-Extension Position Sensor · 4–20 mA / 0–20 mA current output · 75–550 in. stroke
The Celesco PT9420 order code is built as PT9420 – RRRR – A B C – D E F G: a 4-digit stroke range, three option digits, then a four-digit block for signal and connection. Example: PT9420-0350-424-1110 = 350-inch range, stainless-steel enclosure with 36 oz cable tension, Ø.047" bare stainless measuring cable, bottom cable exit, 4–20 mA output, 6-pin connector. Decode any PT9420 number below.
PT9420–0350–424–1110ModelRangeOptionsSignal / Connection
Order Code Table
R · Full Stroke Range
| Code | Meaning |
|---|
| 0075 | 75 in. |
| 0100 | 100 in. |
| 0150 | 150 in. |
| 0200 | 200 in. |
| 0250 | 250 in. |
| 0300 | 300 in. |
| 0350 | 350 in. |
| 0400 | 400 in. |
| 0450 | 450 in. (36 oz tension recommended) |
| 0500 | 500 in. (36 oz recommended) |
| 0550 | 550 in. (36 oz recommended) |
A · Enclosure Material & Cable Tension
| Code | Meaning |
|---|
| 1 | Powder-painted aluminum, 18 oz tension (standard housing) |
| 2 | Powder-painted aluminum, 36 oz tension (dual-spring housing) |
| 3 | 303 stainless steel, 18 oz tension (standard housing) |
| 4 | 303 stainless steel, 36 oz tension (dual-spring housing) |
B · Measuring Cable
| Code | Meaning |
|---|
| 1 | Ø.034" nylon-coated stainless rope — all ranges — general indoor use |
| 2 | Ø.047" bare stainless rope — up to 500 in. — outdoor / debris / high temperature |
| 3 | Ø.058" PVC-jacketed vectra fiber rope — up to 400 in. — high voltage or magnetic field areas |
| 4 | Ø.031" bare stainless rope — 550 in. range only — outdoor / debris / high temperature |
C · Cable Exit
| Code | Meaning |
|---|
| 1 | Front |
| 2 | Top |
| 3 | Back |
| 4 | Down |
D · Reserved
| Code | Meaning |
|---|
| 1 | Fixed digit (reserved position) |
E · Output Signal
| Code | Meaning |
|---|
| 1 | 4…20 mA, 2-wire (8–34 VDC) |
| 2 | 20…4 mA, 2-wire (8–34 VDC) |
| 3 | 0…20 mA, 3-wire (14–29 VDC) |
| 4 | 20…0 mA, 3-wire (14–29 VDC) |
| 5 | 4…20 mA, 2-wire, intrinsically safe (CSA / Cenelec certified) |
| 6 | 20…4 mA, 2-wire, intrinsically safe (CSA / Cenelec certified) |
F · Electrical Connection
| Code | Meaning |
|---|
| 1 | 6-pin plastic connector with mating plug — IP67, NEMA 4X/6 |
| 2 | 10 ft. [3 m] waterproof cable — IP67, NEMA 4X/6 |
| 3 | 6-pin metal connector with mating plug — IP65, NEMA 4 |
| 4 | 25 ft. [7.5 m] instrumentation cable, 24 AWG shielded — IP67, NEMA 4X/6 |
| 5 | 100 ft. [30 m] waterproof cable — IP67, NEMA 4X/6 |
| 6 | 10 ft. [3 m] pressure-tested waterproof cable — IP68, NEMA 4X/6P |
| 7 | 100 ft. [30 m] pressure-tested waterproof cable — IP68, NEMA 4X/6P |
G · Reserved
| Code | Meaning |
|---|
| 0 | Fixed digit (reserved position) |
Special Options & Notes
- VLS option: ordering code starts with VLS instead of PT (e.g. VLS9420-0350-424-1110) — Celesco's Velocity Limiting System that protects the measuring cable from free-release damage.
- EX suffix (PT9420EX): explosion-proof variant with a different ordering table — see the PT9420EX datasheet.
Frequently Asked Questions
What does PT9420-0350-424-1110 mean?
It is a Celesco PT9420 cable-extension position sensor ordered with: 350-inch full stroke range (0350), 303 stainless steel enclosure with 36 oz cable tension (4), Ø.047" bare stainless measuring cable (2), bottom cable exit (4), 4–20 mA 2-wire output (1) and 6-pin plastic connector (1). The final 0 is a reserved digit.
What is the difference between PT9420 tension codes 1, 2, 3 and 4?
Codes 1 and 3 are the standard housing with 18 oz cable tension (aluminum and 303 stainless steel respectively). Codes 2 and 4 use the dual-spring housing with 36 oz tension, which allows higher retraction acceleration (5 g vs 1 g) and velocity (200 vs 60 inches/sec).
Which PT9420 measuring cable should I choose?
Code 1 (Ø.034" nylon-coated stainless) suits general indoor use. Code 2 (Ø.047" bare stainless) is for outdoor, dirty or high-temperature environments up to 500 in. Code 3 (PVC-jacketed vectra) is for areas with high voltage or magnetic fields. Code 4 (Ø.031" bare stainless) exists only for the 550-inch range.
Can the PT9420 output direction be reversed in the field?
Yes. The 4–20 / 20–4 mA direction is changed via internal DIP switches on the signal board; after changing, the zero and span trimpots must be readjusted.
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