AC153 Series Low-Cost, Low-Frequency Accelerometer

Top-Exit Connector / Integral-Cable Versions – 500 mV/g Output.

Engineered for budget-conscious condition-monitoring programs, the CTC AC153 Series couples exceptional low-frequency performance with the rugged reliability found in CTC’s premium lines. A high output of 500 mV/g and a flat amplitude response that starts at 0.1 Hz capture the ultra-slow vibration signatures produced by sleeve bearings, large gears and other low-speed assets—long before faults escalate into costly downtime. The shear-mode PZT sensing element is hermetically welded inside a 316L stainless-steel case, delivering outstanding cross-axis rejection, corrosion resistance and IP68 submersibility to 60 m, all while keeping purchase cost and total cost of ownership to a minimum.

Despite its value price, the AC153 is no lightweight on specifications: it provides broadband coverage to 10 kHz (±3 dB) for bearing-fault and gear-mesh detection, survives 1 000 g mechanical shock, and offers <2 s electrical settling time for fast route-based data collection. The sensor operates from any IEPE supply (18-30 V DC, 2-10 mA) and is available with a robust 2-pin MIL-C-5015 top connector or integral/armored cable assemblies. Each unit ships with an NIST-traceable calibration and is backed by CTC’s unconditional lifetime warranty.

Key Features of the AC153 Accelerometer

  1. High-output 500 mV/g sensitivity (±20 %) resolves sub-Hz vibration on slow-turning machinery
  2. Wide usable bandwidth: 0.1 Hz – 10 kHz (4 – 400 k cpm) ±3 dB—captures both trend and fault data
  3. Low noise density: 1.7 µg/√Hz @ 10 Hz ensures excellent signal-to-noise at very low speeds
  4. 16 g peak dynamic range with 1 000 g shock limit—durable for run-ups and transients
  5. Hermetically welded 316L stainless-steel housing; IP68, submersible 200 ft / 60 m
  6. Top-exit connector simplifies vertical mounting; integral and armored cable options available
  7. IEPE powered, <100 Ω output impedance; <2 s settling time speeds route collection
  8. Compact 3.2 oz (≈ 90 g) form factor mounts via ¼-28 stud; 2 – 5 ft-lb (2.7 – 6.8 N·m) torque
  9. Supplied with calibration certificate and protected by CTC’s Lifetime Warranty

Typical Applications for the AC153 Accelerometer

  • Main bearings, rotor journals and gearbox inputs on hydroelectric turbines, wind generators and paper-machine rolls
  • Slow-speed mixers, kilns, conveyors and cooling-tower fan drives
  • Structural vibration or seismic monitoring where sub-Hz response is required

Technical Specification AC153

CategoryParameterValue
ElectricalSensitivity (±20 %)500 mV/g
Dynamic range±16 g pk
Frequency response (±3 dB)0.1 Hz – 10 kHz
Resonant frequency18 kHz
Noise density1.7 µg/√Hz @ 10 Hz0.2 µg/√Hz @ 100 Hz0.12 µg/√Hz @ 1 kHz
Power (IEPE)18 – 30 V DC, 2 – 10 mA
Bias voltage10 – 14 V DC
Output impedance< 100 Ω
EnvironmentalOperating temperature–58 °F to +250 °F (–50 °C to +121 °C)
Shock limit1 000 g pk
Sealing / submersibleWelded hermetic, 200 ft / 60 m
PhysicalCase material316L stainless steel
Weight3.2 oz (≈ 90 g)
Mounting¼-28 UNF stud; 2 – 5 ft-lb (2.7 – 6.8 N·m) torque
Connector (non-integral)2-pin MIL-C-5015, top exit
Integral cable optionsCB103 (standard), CB206 (armored)
ComplianceCertificationCE-marked; supplied with CAD calibration certificate

Please submit your product enquiry

Thank you for visiting Diversified Tech.

Please fill in the form and send through your enquiry. If you are interested in multiple products then please add the details into the message section.

We look forward to receiving your enquiry.

Thank you

Diversified Technologies Team