Products

Description

The Model 146 is a strain gage conditioner that is particularly
well-suited for load cell applications. It provides bridge excitation, high gain, low output noise and adjustable frequency response. Each module features a 4½ digit LCD display, switch-selectable
to show excitation or amplifier output. Two- and four-module benchtop carrying cases are available, which can mount any combination of Model 146 and Model 147 modules.

Specifications

Gain: Switch-selectable from 1 to 1000 in log steps,
with vernier

Offset: Referred-to-Input and Referred-to-Output offset
adjustment pots

Filter: Switch-selectable lowpass filter at 10, 100, 2k,
or 10kHz, plus bypass

Output: ±10VDC max, up to 10mA load

Excitation: 1.25VDC to 15VDC, front panel adjustable,
plus on/off switch

Bridge completion: Internal header mounts completion
resistors for full, half, or quarter bridge configurations

Bridge Balance: Ten-turn locking trimpot, plus Coarse/Medium/Fine range select

Calibration: One of five switch-selectable precision
cal resistors can be placed across one leg of the bridge

Meter: 4½ digit LCD meter indicates output signal level,
or excitation voltage

Connectors: Bridge inputs are PT02-style bulkhead
connectors; amplifier outputs are BNC

Identification: Front panel paper label holder allows
each module to be marked with its signal source

Power: Unregulated ±24V from rack-mounted supply,
which operates on 115VAC ±10% 50/60Hz

Mechanical: Model 4025-101 two-module assembly
is 8.5" wide, 13" deep, and 9" high