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Table of Contents
Related Manuals for Dewetron DAQP-STG
Summary of Contents for Dewetron DAQP-STG
- Page 1 A u t o m o t i v e E n e r g y & P o w e r A n a l y s i s A e r o s p a c e T r a n s p o r t a t i o n G e n e r a l T e s t &...
- Page 2 Copyright © DEWETRON elektronische Messgeraete Ges.m.b.H. This document contains information which is protected by copyright. All rights are reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. All trademarks and registered trademarks are acknowledged to be the property of their owners.
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Page 3: General Information & Safety Instructions
Warranty Information: A copy of the specific warranty terms applicable to your DEWETRON product and replacement parts can be obtained from your local sales and service office. Restricted Rights Legend: Use austrian law for duplication or disclosure. -
Page 4: Safety Symbols In The Manual
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the product. DEWETRON Elektronische Messgeraete Ges.m.b.H. assumes no liability for the customer’s failure to comply with these requirements. -
Page 5: Safety Instructions
DO NOT substitute parts or modify equipment: Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the product. Return the product to a DEWETRON sales and service office for service and repair to ensure that safety features are maintained. - Page 6 Support For any support please contact your local distributor first or DEWETRON directly. For Asia and Europe, please contact: DEWETRON Ges.m.b.H. Parkring 4 A-8074 Graz-Grambach AUSTRIA Tel.: +43 316 3070 Fax: +43 316 307090 Email: support@dewetron.com Web: http://www.dewetron.com The telephone hotline is available Monday to Friday between 08:00 and 12:00 CET (GMT -1:00) and Monday to Thursday between 13:00 and 17:00 CET.
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Page 7: General Module Information
General Module Information Calibration information All DEWETRON modules are calibrated at 25 °C after a warmup time of 30 minutes and meet their specifications when leaving the factory. The time interval for recalibration depends on environmental conditions. Typically, the calibration should be checked once a year. - Page 8 For all DEWETRON systems, an internal RS-232/485 converter is available (standard with DEWE-800, -2000, -2500, -3000, -4000, -5000 series systems). This converter allows communication with DAQP and PAD modules. To communicate with the modules, the RS-232 interface has to be set to the following parameters:...
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Page 9: Module Specifications
Bridge completion: Internal completion for ½ and ¼ bridge (120 and 350 Ohm) Shunt: Two internal shunts (59.88 kOhm, 175 kOhm) Bridge Excitation: 0 to 12V or 0 to 20mA 16 bit programmable TEDS: Support for TEDS sensors and DEWETRON MSI series Module specifications DAQP-STG Gain: 0.5 to 10 000... -
Page 10: Input Blockdiagram
DAQP-STG Front panel control LED indication: Power LED: This LED is always on when the module is supplied. Status LED: This LED is flashing three times when the Module receives a valid command. Push button operation Module readdressing: Press the ID button for allowing the software to change the address. -
Page 11: Amplifier Functions
DAQP-STG Amplifier functions Input range overview Voltage Strain gage Resistance Current source bridge Excitation 0.25 V 0.5 V 2.5 V 10 V 12 V 0.1 mA 0.2 mA 0.5 mA 1 mA 2 mA 5 mA 10 mA 20 mA... - Page 12 With two internal shunt resistors (59.88 kOhm and 175 kOhm) and one spare socket for a customised shunt, the DAQP-STG has wide flexibility in case of shunt calibration. A jumper network gives the possibility to connect the internal shunts to either Sense+ Sense – IN+ or IN- to be compatible to existing sensor types and correction calculation methods.
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Page 13: Signal Connection
A potentiometer can be seen similar to a half bridge sensor with ±500 mV/V sensitivity. Therefore potentiometric sensors can be measured with bridge amplifiers. The advantages of using the DAQP-STG for potentiometric measurements is by adjusting the offset and range, you can focus on a certain potentiometer position with higher resolution. - Page 14 EXC- Shield In the quarter bridge 4-wire mode the DAQP-STG internally adjusts its excitation in that way, that on the gage the resistor terminals exactly on the half of the excitation voltage. All wire resistances are compensated. Resistance, RTD 2-wire and 4-wire...
- Page 15 DAQP-STG Voltage measurement and μV measurement SENSOR TEDS isolated If the excitation is not used for sensor supply it has to be deactivated by setting it to 0 V. This will internally connect the IN- to the GND to improve the common mode rejection.
- Page 16 DAQP-STG Cables and Shielding To keep the influence of electromagnetic disturbances as small as possible, shielded twisted pair cables are recommended. Connect the shield to the isolated GND (Pin4) to get the best result. The twisted pairs for full bridge, half bridge ,voltage and resistance mode are:...
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