Table of Contents
Summary of Contents for Loadstar Sensors DI-1000
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Page 1: Users Guide
48501 Warm Springs Blvd Suite 109 Fremont, CA 94539 (510) 623-9600 www.loadstarsensors.com DI-1000 High Precision Resistive Load Cell to USB Adapter Users Guide Copyright © 2008, 2014 Loadstar Sensors, Inc.. All rights reserved. - Page 2 Do not install substitute parts or perform any unauthorized modification to the product. Return the product to a Loadstar Sensors office for any required service and repair to ensure that safety features are maintained.
- Page 3 Di1000 User Guide WARNING 1. Do not use the DI-1000 with the cover, or part of the cover removed or loose, as a hazardous condition may result. Inspect the case for cracks or missing plastic. Do not use if the display is damaged.
- Page 4 The Producer in your country may be able to assist you. Loadstar sensors is dedicated to minimizing the impact our products have on the environment and to comply with the WEEE Directive.
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Page 5: Table Of Contents
Attach your load cell to the DI-1000 ..................10 Special sensor grounding considerations ................12 Install Virtual COM port drivers ..................13 Connect the USB Host (e.g., your PC) to the DI-1000 ............13 Terminal command line operation .....................13 Initial set up of the DI-1000 ....................13 CALIBRATING THE DI-1000 ....................15... - Page 6 DI-1000 Di1000 User Guide List of figures: Figure 1: Load cell Wiring Block Connections ..................8 Figure 2: Power and Host connections ....................8 Figure 4: Mechanical Long Side View (switch side) ................9 Figure 5: Mechanical End View (Power adapter and host connector) ..........9 Figure 6: Removable Wiring Connector End (Load cell connection) ..........
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Page 7: Introduction
Either DI-1000 device version offers the same high precision load cell to PC interface. With consistent remote programming, built in LoadVUE software compatibility, and low power operation, either DI-1000 device is sure to play a key role in your high performance measurement system. Basic Module Features: May be powered from USB Host (if connected). -
Page 8: External Di-1000 Connections
DI-1000 Di1000 User Guide The following pictures of the DI-1000 show the external connections. External DI-1000 Connections Figure 1: Load cell Wiring Block Connections Figure 2: Power and Host connections Page: 8 / 25 P/N : 033-01591 Rev. 6... -
Page 9: Di-1000 Mechanical Dimensions
DI-1000 Di1000 User Guide DI-1000 Mechanical Dimensions Figure 3: DI-1000 Mechanical Top View Figure 4: Mechanical Long Side View (switch side) Figure 5: Mechanical End View (Power adapter and host connector) Page: 9 / 25 P/N : 033-01591 Rev. 6... -
Page 10: Step By Step Operating Guide
TEP BY PERATING UIDE Designed for ease of use, the DI-1000 is easy to bring up. The following steps should get you up and running quickly. Plug in the AC power adapter to your DI-1000 Attach your load cell to the DI-1000... -
Page 11: Figure 8: Six Wire Load Cell Wiring Schematic
Figure 8: Six Wire Load cell Wiring Schematic We’ve included a handy reference chart below that you can use to help determine how to correctly wire your load cell to the DI-1000 wiring connector. Page: 11 / 25 P/N : 033-01591 Rev. 6... -
Page 12: Special Sensor Grounding Considerations
(Tie to +EX) Special sensor grounding considerations The DI-1000 has two ground pins, EARTH ground, and SIGNAL ground. Connection to both pins should be carefully considered for each application. The very high accuracy possible using the DI- 1000 can easily be compromised with an incorrect connection to EITHER of these two pins! Firstly, make sure you know how your load cell is wired! If your load cell has 4 wires and one shield, that shield may be attached to the body of the load cell. -
Page 13: Install Virtual Com Port Drivers
Please note that the instructions in the booklet above are written primarily for Loadstar Sensors’ iLoad series of Digital USB sensors, but will work with the DI-1000 as well with the one change that the Baud rate for communication should be set at 9600 (or 230400 for DI-1000U-HS high speed models).. - Page 14 DI-1000 Di1000 User Guide 4. Enter the desired amplifier gain: GAIN 64 ← 5. Enter the desired samples/sec: SPS 60← 6. Reset the zero value of the sensor: TARE ← 7. Set the calibration mode to be used for load measurements. You can set mV/V calibration by entering CAL m←.
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Page 15: Calibrating The Di-1000
(where x.xxxx represents the known mV/V calibration number for the load cell) The DI-1000 echoed the value of the mV/V number you typed in to confirm that it has been accepted. The calibration value is retained until it is again changed by the user, even through DI-1000 power cycles. - Page 16 DI-1000 Di1000 User Guide The DI-1000 responds with a number and “Calibration complete!” Your two point calibration has been stored. The number reported represents the mV/V of the load cell as computed by the DI-1000. Page: 16 / 25 P/N : 033-01591 Rev. 6...
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Page 17: Additional Considerations
DI-1000 Di1000 User Guide DDITIONAL ONSIDERATIONS Effect of Improper Grounding on typical resolution Noise (nV) vs Amplifier Gain Figure 9: Typical RMS noise Values (nV) vs. sample rate Effect of Sample Rate on typical resolution (bits) Figure 10: Typical noise free equivalent resolution (bits) Page: 17 / 25 P/N : 033-01591 Rev. -
Page 18: Di-1000 Command Summary
The commands for the DI-1000 can all be entered without parameters to have the DI-1000 report the value of the appropriate parameters in memory. For example, entering UNIT KG← sets the DI- 1000 units to KG. Now entering UNIT← gets the DI-1000 to respond with the currently set units, i.e. UNIT... - Page 19 DI-1000 Di1000 User Guide TARE 5.1.4 Function: Tares, or sets the display ZERO value. Summary: When this command is issued, the current ADC value, is retained as the currently defined ZERO output value. All output values are referenced to this value.
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Page 20: 2Pcal
MVOLT 2.123 ← 2PCAL 5.1.9 Function: Runs the 2 point calibration procedure Summary: Begins the 2 point calibration procedure. Follow the prompts from the DI-1000 to complete the calibration as described in the section on calibration above. Example 2PCAL 250← W 5.1.10... -
Page 21: Settings
DI-1000 Di1000 User Guide WU 5.1.12 Function: Displays current weight & units Summary: This is similar to the W command except that the unit is also reported by the DI- 1000. Example WU ← -0.363733 LB R 5.1.13 Function: Return RAW ADC value... -
Page 22: Zigbee Wireless Version
A separate USB “dongle” is provided to plug into the PC, which wirelessly communicates with the remote DI-1000 and attached loadcell device. The wireless link between the DI-1000 and the PC uses a point to point variant of the ZigBee 802.15.4 protocol which provides wireless end-point connectivity for fast wireless networking between the provided host dongle, and the DI-1000 device. - Page 23 Di1000 User Guide After connecting the DI-1000 a new port should appear: In the above figure, COM22 corresponds to the virtual COM port of the DI-1000 Dongle. Next, open Hyperterminal, and create a new connection corresponding to your attached DI-1000...
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Page 24: Continuation Of The Quick Start
Di1000 User Guide Click Apply, OK and <ENTER> several times. You should get an “A” returned onscreen for every <ENTER> pressed. You many now type ASCII commands to the DI-1000, to remotely monitor and control the attached sensors. You may press “?” at any time to see the available command list. Please continue at section Continuation of the Quick Start The quick start process continues the same as in section 3.7 above with the wired version. -
Page 25: Di-1000 Technical Specifications
DI-1000 Di1000 User Guide 7 DI-1000 T ECHNICAL SPECIFICATIONS Performance Resolution See Figure 10: Typical noise free equivalent resolution (bits) Output Resolution Dynamic, Sensor Dependent Programmable, 7.5 – 3840 Samples/Second Update Speed Output Sensitivity Sensor dependent Software Filter None Temp Coefficient...