Vibro-Meter TQ402 111-402-000-013 A1-B1-C042-D000-E010-F1-G010-H10 Proximity Sensor

0–2.5 mm linear span (ideal 0.1–2.5 mm)

4 mV/µm (voltage mode) or 1.25 µA/µm (current mode)Frequency
Response & Linearity

DC – 20 kHz (–3 dB)

≤ ± 1 % non-linearity over full span (with matched conditioner)

≤ 5 % interchangeability among identical probes
Electrical & Cable

Excitation: –20 V to –32 V DC from conditioner (≈ 13 mA draw)

Output impedance: ~ 500 Ω (voltage) / drive ≤ 800 Ω (current)

Integral 10 m PTFE-insulated, stainless-steel-braided coax
Mechanical & Environmental

Body length: 42 mm; diameter: 12 mm; stainless-steel alloy housing

Tip: Hardened-steel, flush-mount

Mounting thread: M6 × 0.5

Operating temp: –25 °C to +140 °C; storage: –40 °C to +150 °C

Shock: 50 g, 2 ms; Vibration: ≤ 25 g, 5 Hz – 5 kHz

Pressure rating: up to 100 bar at probe face

Ingress: IP 65 at tip; IP 40 at cable junctionCertifications

ATEX Zone 1 (Ex ia IIC T6)

CSA Class I, Div 1, Groups A B C D

IEC 60529 / CE / CENELEC

Linear, micro-meter-level displacement measurement over 0–2.5 mm with wide DC–20 kHz bandwidth.

Stainless-Steel Ruggedness

Robust housing withstands extreme shock, vibration, pressure, and temperatures up to +140 °C.

PTFE-insulated, steel-braided cable preserves signal fidelity and simplifies long-run installations.

Maintains consistent sensitivity across the full operating range without external tuning.

Intrinsically safe approvals allow direct mounting in classified areas when used with approved conditioners.

Two probes (vertical/horizontal) on bearing pedestals feed IQS450 conditioners and VM600 MPC4 cards. Real-time centerline tracking prevents misalignment and early rub conditions during startup and load swings.

Mounted at the impeller face inside a pressurized casing. Sudden gap reductions (rubs or thrust shifts) trigger protective interlocks, avoiding blade damage and unplanned shutdowns.

Clamped to runner sidewalls to capture slow thermal deflection (DC) and high-frequency resonance. Trend analysis guides maintenance on wicket gates and bearing seals.