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Mechanical Specification for DCell ................................................................................................... 72
CE Approvals.............................................................................................................................. 72
Chapter 1 Introduction
This chapter provides an introduction to DCell/DSC products, describing the product range, main features and
application possibilities.
Overview
The DCell and DSC products are miniature, high-precision Strain Gauge Converters; converting a strain gauge sensor
input to a CAN output. They allow multiple high precision measurements to be made over a low-cost 2-wire link.
Outputs can be accessed directly by PLCs or computers, or connected via various types of network, all without
compromising accuracy.
The device is configurable via a proprietary MantraCAN protocol but is able to stream data in a customisable manner
to suit most CAN networks i.e. CANopen® or J1939.
This streamed data does not support any interaction, parameter writing or action commands. However all this can be
achieved using the MantraCAN protocol.
Customisable start and stop messages allow the instrument streaming to be controlled via the host CAN network.
Key Features
Ultra-miniature
The DCell 'puck' format can be fitted inside most load cell pockets, and similar restricted spaces. The DSC cards
are similarly very small, optimised for mounting as a component onto custom PCBs.
High-precision Industrial Version.
25ppm basic accuracy (equates to 16 bit resolution)
High-precision High Stability
5ppm basic accuracy (equates to 18 bit resolution) with comparable stability – far exceeds standard instrument
performance.
Low-power
Low-voltage DC supply (5.6V min), typically 40mA for RS485 and 52mA for RS232 (including 350R strain gauge).
Adjustable sensitivity
Configured for standard 2.5mV/V full-scale strain gauges as supplied.
A single additional resistor configures the input between 0.5 and 100 mV/V full-scale.
Temperature sensing and compensation (optional)
An optional temperature sensor module is available and advanced 5-point temperature-compensation of
measurement.
Linearity compensation
Advanced 7-point linearity compensation.
CAN Output
Lower-cost cabling, improved noise immunity, and longer cable runs with no accuracy penalty.
Device addressing allows up to 127 devices on a single bus, drastically reducing cabling cost and complexity.
Two-way communications allow in-situ re-calibration, multiple outputs and diagnostics.
No separate measuring instruments needed.
Digital calibration
Completely drift-free, adjustable in-system and/or in-situ via standard communications link.
Two independent calibration stages for load cell-and-system-specific adjustments.
Programmable compensation for non-linearity and temperature corrections.
Calibration data is also transferable between devices for in-service replacement.
4
Mantracourt Electronics Limited DCell & DSC MantraCAN User Manual
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