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HT787A

Product catalog summary

Specifications Overview
The HT787A is a high-temperature accelerometer designed for operation up to 150°C. It is built with extended range components for durability and is manufactured in an ISO 9001 certified facility.

Key Features

Operational temperature up to 150°C
Sensitivity of 100 mV/g at ±5% accuracy at 25°C
Acceleration range of 80 g peak with VDC > 25 V
Amplitude nonlinearity of 1%
Frequency response ranges from 1.0 - 5,000 Hz (±10%) and 0.5 - 10,000 Hz (±3 dB)
Nominal resonance frequency of 22 kHz
Maximum transverse sensitivity of 5% of axial

Temperature and Power Requirements

Temperature response ranges from -25°C to +150°C with variations of -10% to +15%
Voltage source requirement of 18 - 30 VDC and current regulating diode of 2 - 10 mA

Electrical Characteristics

Electrical noise equivalent to g: 700 µg at 25°C and 1,100 µg at 150°C
Output impedance maximum of 100 Ω
Bias output voltage of 13 VDC at +25°C and 12 VDC at +150°C

Physical and Environmental Specifications

Temperature range from -50° to +150°C
Vibration limit of 500 g peak and shock limit of 5,000 g peak
Electromagnetic sensitivity equivalent to 70 µg/gauss
Hermetic sealing and base strain sensitivity maximum of 0.0002 g/μstrain
Sensing element design is PZT, shear
Weight of 145 grams and case material is 316L stainless steel

Mounting and Connections

Mounting via 1/4-28 captive screw
Output connector is 2 pin, MIL-5015 style
Recommended cabling is J9F / J9T2A
Connector pin functions: power/signal (A), common (B), ground (shell)

Catalog excerpts

Acceleration range, VDC > 25 V 80 g peak Resonance frequency, nominal 22 kHz Transverse sensitivity, max 5% of axial Power requirement: Voltage source 18 - 30 VDC Current regulating diode 2 - 10 mA 150°C 1,100 gg 14 gg/VHz 7 gg/VHz 7 M9/VHz Output impedance, max 100 O Bias output voltage: +25°C 13 VDC Electrical noise, equiv. g: 25°C Grounding Temperature range Vibration limit Shock limit Electromagnetic sensitivity, equiv. g, max Sealing Base strain sensitivity, max Sensing element design Weight Case material Mounting Output connector Recommended cabling case isolated, internally shielded -50° to +150°C 500 g peak 5,000 g peak 70 gg/gauss hermetic 0.0002 g/gstrain PZT, shear 145 grams 316L stainless steel 1/4-28 captive screw 2 pin, MIL-5015 style J9F/J9T2A Accessories supplied: 1/4-28 captive screw (metric mounting available); calibration data (level 2) Key features • 150°C operation • Built with extended range components for long-lasting operation • Manufactured in ISO 9001 facility Note: Due to continuous process improvement, specifications are subject to change without notice. This document is cleared for public release. Wilcoxon Sensing Technologies An Amphenol Company 8435 Progress Drive Frederick, MD 21701 USA buy.wilcoxon.com www.wilcoxon.com

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