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Model 786-500-IS Low-Frequency Intrinsically Safe Accelerometer
Brand: Wilcoxon Sensing TechnologiesWilcoxon’s intrinsically safe 786-500-IS sensor is certified for usage in hazardous areas and offers clear signals at low vibration levels. The sensor is designed with extended low-end frequency response and improved signal-to-noise ratio compared to other general-purpose models. It can be used to detect both low- and high-speed vibrations and is optimized for detecting vibration on slow turning machinery such as cooling tower fans and slow-speed gearboxes.
The 786-500-IS sensor is classifed for usage in Class I Division 1/Zone 0/1 locations where ignitable concentrations of flammable gases, vapors or liquids are present continuously under normal operating conditions.
Features- High sensitivity
- Extended low frequency response
- Clear signals at low vibration levels
- Class I, Div 1/Zone 0/1 certified
- Hermetically sealed
- ESD protected
- Reverse wiring protection
- Manufactured in an approved ISO 9001 facility
1 - 5 of 5 Part Numbers
786-500-IS
- Sensitivity, ±5%, 25°C: 500 mV/g
- Frequency response:
- ±5%: 0.7 - 5,000 Hz
- ±10%: 0.5 - 9,000 Hz
- ±3 dB: 0.2 - 14,000 Hz
- Temperature Range: -50° to +120° C
- Response:
- –20°C: –10%
- +120°C: +10%
- Response:
- Power Requirement:
- Voltage Source: 18 - 28 VDC
- Current regulating diode: 2 - 10 mA
- Output Connector: 2 Pin, MIL-5015 Style
- CSA Class I, Div 1 Groups A, B, C, D Class II, Div 1 Groups E, F, G Class III Class I Zone 0 AEx/Ex ia IIC T4 Ta = -50°C to 120°C
786A-IS
- Sensitivity, ±5%, 25°C: 100 mV/g
- Frequency response:
- ±5%: 3 - 5,000 Hz
- ±10%: 1 - 9,000 Hz
- ±3 dB: 0.5 - 14,000 Hz
- Temperature Range: -55° to +120° C
- Response:
- –55°C: –20%
- +120°C: +10%
- Response:
- Power Requirement:
- Voltage Source: 18 - 28 VDC
- Current regulating diode: 2 - 10 mA
- Output Connector: 2 Pin, MIL-C-5015 Style
- CSA Class I, Div 1 Groups A, B, C, D Class II, Div 1 Groups E, F, G Class III Class I Zone 0 AEx/Ex ia IIC T4 Ta = -50°C to 120°C
787AM8
- Sensitivity, ±5%, 25°C: 100 mV/g
- Frequency response:
- ±10%: 1 - 5,000 Hz
- ±3 dB: 0.7 - 10,000 Hz
- Temperature Range: -55° to +120° C
- Response:
- –55°C: –20%
- +120°C: +10%
- Response:
- Power Requirement:
- Voltage Source: 18 - 30 VDC
- Current regulating diode: 2 - 10 mA
- Output Connector: 2 Pin, MIL-C-5015 Style
- CSA Class I, Div 1 Groups A, B, C, D Class II, Div 1 Groups E, F, G Class III Class I Zone 0 AEx/Ex ia IIC T4 Ta = -50°C to 120°C
793T-3
IT301
- Sensitivity Range:
- acceleration: 9 mV/g - 11,000 mV/g
- velocity: 9 mV/in/sec - 11,000 mV/in/sec
- temperature: 10 mV/°C (optional 10 mV/°K)
- IEPE power source: +24 VDC, 4.5 mA, enable/disable
- Alarms: High / Low / Relay
- All measurement parameters, user-configurable
- Loop Outputs
- 4-20 mA (two): Configurable from measurement results
- Sourced: Full scale, user-configurable
- Alarm relay: 1 x NC/NO
- Power: 11 - 32 VDC, 350 mA max
- Temperature:
- Operating: –40 to +70° C
- Storage: –40 to +85° C
- Certifications: CE
1 - 5 of 5 Part Numbers
Specifications
Approvals & Certifications
- ISO 9001
Approvals & Certifications
- ATEX Ex ia IIC T4 Ga
- CE
- CSA (C,US) Class I, Div. 1, Grade A, B, C, D Class I, Div. 1, Groups E, F, G Class III, Div. 1, Class I, Zone 0 AEx, Ex ia IIC T4
- IECEx
Circuit Protection
- ESD Protection
- Reverse Wiring Protection
Electrical Connectors
- Cable (J10 / J9T2A, < 100 feet)
- Mating Connector: R6 Typical
Element
- Sensing Element Design: PZT, Shear
Enclosure, Body Material
- 316L Stainless Steel
Frequency
- Frequency Response (± 10 %): 0.5 to 9,000 Hz
- Frequency Response (± 3 dB): 0.2 to 14,000 Hz
- Frequency Response (± 5 %): 0.7 to 5,000 Hz
- Resonance Frequency, Mounted, Nominal: 30 kHz
Mounting
- 1/4-28 Captive Hex Head Screw, 0.046” Diameter Safety Wire Hole
Noise
- Electrical Noise, Equivalent G, Nominal (Broadband: 2.5 Hz to 25 kHz): 250 µg
- Electrical Noise, Equivalent G, Nominal (Spectral: 10 Hz): 2.5 µg/√Hz
- Electrical Noise, Equivalent G, Nominal (Spectral: 100, 1,000 Hz): 1.5 µg/√Hz
Non-Linearity
- Amplitude Non-Linearity: 1 %
Output Impedence
- Maximum 100 Ω
Power Requirement
- 18-30 Vdc
- Current Regulating Diode: 2-10 mA
Range
- Acceleration Range, Vdc > 22 V: 10 G Peak
Seal Type
- Hermetic
Sensitivity
- Base Strain Sensitivity, Max.
- Electromagnetic Sensitivity, Equivalent G, Max.
- Sensitivity, ± 5 %, 25° C (77° F): 500 mV/g
- Transverse Sensitivity: Max. 5 % of axial
Shock
- Shock Limit: 5,000 G Peak
Temperature Range
- -50° to 120° C (-58° to 248° F)
Vibration
- Vibration Limit: 500 G Peak
Voltage
- Bias Output Voltage, Nominal: 12 Vdc