Rice Lake Ranger 1, Operation Manual

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Introduction 1
1.0 Introduction
The Rice Lake Weighing Systems Ranger load cell simulators are precision instruments designed to provide
millivolt level signals for testing, calibration and troubleshooting strain gage instrumentation and systems.
Accuracy and stability are obtained through the use of a “Star Bridge” circuit comprised of four temperature stable,
precision resistors.
Rice Lake Weighing Systems offers four models of the Ranger Series Simulators.
Figure 1-1. Ranger 1, 3 and 5 Simulators
Features
Ranger 1:
• Bridge impedance of 700 ohms
• 10-turn continuously variable output from 0 to 3 mV/V.
Ranger 3:
• Bridge impedance of 350 ohms
• Nine calibrated outputs - eight 0.5 mV/V steps from -0.5 mV/V to 3.0 mV/V and an addi4.5 mV/V
step. The -0.5 and +4.5 mV/V settings are useful for performing A/D offset and gain calibrations in Rice
Lake indicators.
Ranger 5:
• This has the same features as the Ranger 3 with the addition of a 3-range, 10-turn locking vernier.
These three Ranger Series Simulators connect using binding posts color coded to the ISA S37.8 standard, and will
accept standard banana plugs or up to 14 gauge wire.