Titan Pressure Transmitter – M12 (4‑pin) wiring guide #
This guide covers the “Titan” pressure transmitters fitted with an M12x1 A‑coded metal connector (4‑pin). It provides wiring for both 2-wire 4–20 mA loop-powered models and 3-wire voltage-output models. Always isolate power before wiring and follow site safety and EMC/earthing practices.
Connector orientation #
Viewed on the transmitter socket below, pins are numbered clockwise:
1 at bottom‑right, 2 top‑right, 3 top‑left, 4 bottom‑left.
Pinout summary #
- Pin 1: +ve supply
- Pin 2: –ve supply/common (0 V)
- Pin 3: Output (for 3‑wire voltage variants). For 2‑wire current variants, this pin is NC.
- Pin 4: Earth to case (chassis/shield)
Note: For the 2‑wire 4–20 mA version Pin 3 is NC. For 3‑wire voltage versions, Pin 3 carries the analogue output.
Supply ranges #
- 4–20 mA (2‑wire): 10–32 Vdc
- Voltage outputs (3‑wire): typical supply 13–32 Vdc for 0–5 V, 1–5 V, 0–10 V variants (check your label/datasheet for your exact model and range)
A) Wiring – 2‑wire 4–20 mA current loop #
- Pin 1 (+Vs): connect to the loop positive from your DC supply.
- Pin 2 (–Vs/loop return): connect to your receiving device 4–20 mA input (+). The receiving device’s return then goes to the supply negative.
- Pin 3: not connected.
- Pin 4 (Earth to case): earth at a single point to avoid ground loops.
Verification: With zero pressure you should read ~4 mA; at full scale ~20 mA.
B) Wiring – 3‑wire voltage output (0–5 V, 1–5 V, 0–10 V) #
- Pin 1 (+Vs): connect to the DC supply positive (typically 13–32 Vdc, depending on model).
- Pin 2 (0 V): connect to the DC supply negative and your measurement device ground/common.
- Pin 3 (Vout): connect to the measurement device analogue input (high). Input impedance should be ≥100 kΩ for best accuracy.
- Pin 4 (Earth to case): earth at a single point to avoid ground loops.
Notes for voltage models:
- Do not load the output heavily; use a high‑impedance input.
- Ensure the measurement device ground (0 V) is the same as Pin 2.
Good practice #
Use a 4‑core screened M12 cable. Map cores to the M12 pins as above; leave any unused core insulated. Keep sensor cables away from high‑voltage and variable‑frequency drive cables—bond earth at one location only.
Additional Resource #
You can download our generic product wiring guide here: https://stork.solutions/wp-content/uploads/2025/08/Wiring-Configuration-Sheet-Issue-04.pdf
This shows all the different output options and electrical connection types for the Stork-manufactured range of products.
