wilcoxon 787A-IS Specifications

Intrinsically safe certied,
low prole accelerometer

787A-IS

Key features

• Corrosion resistant

• Hermetic design

• Ground isolated

• ESD protection

• Reverse wiring
protection

• Mounts in any
orientation

• Hazardous area

certied - intrinsically

safe

Connections

Function Connector pin Cable conductor color

power / signal A white

common B black

ground shell shield

Certications

C US

Class I, Div 1 Groups A, B, C, D
Class II, Div 1 Groups E, F, G
Class III, Div 1
Class I, Zone 0, Ex ia IIC T4
Class I, Zone 0, Aex ia IIC T4

Ex ia IIC T4 Ga

For hazardous area locations, sensor must
be installed in accordance with installation
instructions or local code requirements.
Electrical safety barrier required for
hazardous area installations.

Note: Due to continuous process improvement, specications are subject to change without notice.

This document is cleared for public release.

Wilcoxon Sensing Technologies
20511 Seneca Meadows Parkway
Germantown, MD 20876
[e-mail]

98883 Rev. E.1 03/18

Tel: [phone]
Fax: [phone]
www.wilcoxon.com

Wilcoxon Sensing Technologies

Intrinsically safe certied,
low prole accelerometer

787A-IS

SPECIFICATIONS

Sensitivity, ± 5%, 25° C 100 mV/g

Acceleration range 80 g peak

Amplitude nonlinearity 1%

Frequency response: ± 10%
± 3 dB

Resonance frequency 22 kHz

Transverse sensitivity, max 5% of axial

Temperature response: –25° C
+120° C

Voltage source
Current regulating diode

Electrical noise, equiv g:
Broadband 2. 5 Hz to 25 kHz
Spectral 10 Hz
100 Hz
1000 Hz

Output impedance, max 100 Ω

Bias output voltage 12 VDC

Grounding case isolated, internally shielded

Temperature range –50 to +120° C

Vibration limit 500 g peak

Shock limit, min 5,000 g peak
Electromagnetic sensitivity, equiv g, max 70 μg/gauss

Sealing hermetic
Base strain sensitivity, max 0.002 g/μstrain

Sensing element design PZT ceramic / shear

Weight 145 grams

Case material 316L stainless steel

Mounting 1/4-28 captive hex head screw with 0.046”

Output connector 2 pin, MIL-C-5015 style

Mating connector R6 type

Recommended cabling J10 / J9T2A

1.0 - 5,000 Hz

0.7 - 10,000 Hz

–10%
+10%

18 - 28 VDC
2 - 10 mA

700 μg
10 μg/√Hz
5 μg/√Hz
5 μg/√Hz

diameter safety wire hole

Contact

Wilcoxon Sensing
Technologies

20511 Seneca Meadows Parkway
Germantown, MD 20876, USA

Tel: [phone]
Fax: [phone]

[e-mail]

www.wilcoxon.com

Accessories supplied:

• 1/4-28 captive hex head

screw

• Calibration data (level 2)

Optional accessories
available:

ISBS-STD-01: MTL 728 +
safety barrier
ISBS-STD-08: MTL 7728 +
safety barrier

Note: Due to continuous process improvement, specications are subject to change without notice.

This document is cleared for public release.

Wilcoxon Sensing Technologies
20511 Seneca Meadows Parkway
Germantown, MD 20876
[e-mail]

Tel: [phone]
Fax: [phone]
www.wilcoxon.com

Wilcoxon Sensing Technologies