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Low frequency accelerometer and temperatures sensors for hazardous areas

Model: 786T-500, 786T-500-D2, 786T-500-IS, 787T-500-IS, and 787T-IS

Wilcoxon's wide selection of dual-output vibration and temperatures sensors has expanded, with 5 new models featuring low-frequency applications in hazardous areas. Request a quote.

Key features and benefits

  • Dual-output accelerometer and temperature sensors measure both vibration and temperature, providing more data from one sensor to simplify condition monitoring in applications such as bearing and gear monitoring, where it is useful to know the temperature at the mounting location
  • Certified versions meet Intrinsically Safe (Zone 0 / Zone 1) and Class I Division 2 (Zone 2) requirements for use in hazardous area locations common in cement production, mining, steel manufacturing, oil and gas, and other industries
  • Excellent broadband frequency response, including high-sensitivity, 500 mV/g models with clear signals at low vibration levels, down to 0.2 Hz, for slow speed monitoring applications, like gearboxes, fans, and conveyors

The following specifications and features highlight the differences between the new sensors.

Dual output of acceleration and temperature
Hazardous area certificationNoneClass I Division 2
Zone 2
Class I Division 1
Zone 0 / Zone 1
Class I Division 1
Zone 0 / Zone 1
Class I Division 1
Zone 0 / Zone 1
Low-frequency accelerometer
Acceleration sensitivity, ±5%500 mV/g500 mV/g500 mV/g500 mV/g100 mV/g
Acceleration range10 g10 g10 g10 g80 g
Frequency response (±3 dB)0.2 - 14,000 Hz0.2 - 14,000 Hz0.2 - 14,000 Hz0.2 - 10,000 Hz0.5 - 10,000 Hz
Resonance frequency30 kHz30 kHz30 kHz22 kHz22 kHz
Low profile, side exit
Broadband electrical noise, 2.5 Hz to 25 kHz250 μg250 μg250 μg250 μg700 μg
Weight90 grams90 grams90 grams145 grams145 grams
Mounting1/4-28 stud1/4-28 stud1/4-28 stud1/4-28 captive screw1/4-28 captive screw

The following specifications are the same for all new sensors.

Temperature sensor:
Output sensitivity
Measurement range

10 mV/°C
2° to 120°C
Electrical noise, equiv. g, nominal:
Broadband 2.5 Hz to 25 kHz
Spectral 10 Hz
100 Hz
1,000 Hz

700 μg
10 μg/√Hz
5 μg/√Hz
5 μg/√Hz
Temperature response:

Power requirement:
Voltage source
Current regulating diode

18 - 30 VDC
2 - 10 mA
Bias output voltage, nominal12 VDC
Groundingcase isolated,
internally shielded
Temperature range–50° to +120°C
Vibration limit500 g peak
Shock limit5,000 g peak
Amplitude nonlinearity1%
Transverse sensitivity, max5% of axial
Sensing element designPZT ceramic / shear
Case material316L stainless steel
Output connector3 pin, MIL-C-5015 style
Mating connector3 socket, MIL-C-5015 style (R6G)
Recommended cabling3 conductor, shielded (J9T3A)

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