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

Specification comparison
Sensor family
Common specifications

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

Model	786T-500	786T-500-D2	786T-500-IS	787T-500-IS	787T-IS
Dual output of acceleration and temperature	✓	✓	✓	✓	✓
Hazardous area certification	None	Class 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/g	500 mV/g	500 mV/g	500 mV/g	100 mV/g
Acceleration range	10 g	10 g	10 g	10 g	80 g
Frequency response (±3 dB)	0.2 - 14,000 Hz	0.2 - 14,000 Hz	0.2 - 14,000 Hz	0.2 - 10,000 Hz	0.5 - 10,000 Hz
Resonance frequency	30 kHz	30 kHz	30 kHz	22 kHz	22 kHz
Low profile, side exit				✓	✓
Broadband electrical noise, 2.5 Hz to 25 kHz	250 μg	250 μg	250 μg	250 μg	700 μg
Weight	90 grams	90 grams	90 grams	145 grams	145 grams
Mounting	1/4-28 stud	1/4-28 stud	1/4-28 stud	1/4-28 captive screw	1/4-28 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: –25°C +120°C	–10% +10%
Power requirement: Voltage source Current regulating diode	18 - 30 VDC 2 - 10 mA
Bias output voltage, nominal	12 VDC
Grounding	case isolated, internally shielded
Temperature range	–50° to +120°C
Vibration limit	500 g peak
Shock limit	5,000 g peak
Amplitude nonlinearity	1%
Transverse sensitivity, max	5% of axial
Sensing element design	PZT ceramic / shear
Case material	316L stainless steel
Sealing	hermetic
Output connector	3 pin, MIL-C-5015 style
Mating connector	3 socket, MIL-C-5015 style (R6G)
Recommended cabling	3 conductor, shielded (J9T3A)

Low frequency accelerometer and temperatures sensors for hazardous areas

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

Key features and benefits

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