Bulk Indium Arsenide BH-700 Series
Single Axis
Bell Technologies Inc.,
Description
Designed to meet the requirements of a wide range of magnetic
field measurement applications, the BH-700 Series are small,
solid-state devices that provide an output voltage proportional to
the product of control current and ambient flux density. Five
single-axis models are available to measure axial and transverse
magnetic field components with sensitivities from 7.5 to 50
mV/kG and input and output resistance of several ohms.
Electrical Specifications
BH-702
a. Air gap: between concentrator and substrate, 0.0025" nominal
and 0.003" maximum.
b. Sensitivity: Basic sensitivity of Hall element .15 V/A-kG min.
With the unit suspended in a free field of 100 oersteds and
Ic=200 mA, the open circuit Hall voltage is 8.0 mV min. In a
closed magnetic circuit with Ic=200 mA, VH is 3.mV/Ampere
turn min.
c. Polarity: With the magnetic field vector as shown and Ic entering
the red lead, the positive Hall voltage will appear at the blue lead.
BH-701
a. Linearity: VH vs. B, –10 to +10 kG: ±0.25% of reading, max.
BH-704
VH vs. B, –30 to +30 kG: ±1.0% of reading, max.
VH vs. Ic, 0 to 100 mA: ±0.1% of reading, max.
VH vs. Ic, 0 to 300 mA: ±1.0% of reading, max.
b. Encapsulation:
The BH-701 and the BH-704 are encapsulated in a rugged aluminum
oxide ceramic and epoxy case for excellent heat transfer and strength.
Models
1. BH-700 Low cost, Transverse, General Purpose
2. BH-701 Rugged, High-Linearity, Transverse, Instrumentation Quality
3. BH-702 Low Field (ferrite-embedded), Transverse
4. BH-704 Rugged, High Linearity, Axial, Instrumentation Quality
5. BH-705 General Purpose, Transverse
Posts
