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Strain Gauge Interface

Strain Gauge Interface

Strain Gauge Interface

Product catalog summary
Overview: The NP-1-STRAIN-24-SD85 is a versatile and robust strain gauge interface card designed for direct connection to strain gauges and load cells. It supports SDI-12 and RS485 communication protocols and integrates with Keynes Controls Q-LOG software for data display and recording. The card is suitable for use in harsh environments.
Specifications: The card measures 75 mm in length and 24 mm in width. It features a 24-bit ADC analogue input and supports gauges from 120 to 4 K Ohms. It operates with a power supply of 10-18 VDC, with a current consumption of 2 mA during acquisition and 10 uA in standby. The input range is +/- 70 mV, and the bridge excitation voltage ranges from 0 to 4.5 VDC. A precision temperature sensor (thermistor) is included, with a range of -30 to +60°C and an accuracy of 0.05°C.
Features: Key features include user-programmable scaling factors, low power consumption, minimized self-heating, and support for both raw and engineering data outputs. The card supports extended SDI-12 address range (0-9, a-z) and allows user-defined gauge factors. It is designed for easy field installation without special tools.
Connectivity: The card uses 2.5 mm pluggable terminal blocks for sensor and network connections. It includes a 5-way network port and a 6-way sensor port, with pin-outs provided for thermistor and voltage inputs. The SDI-12 network supports up to 20 sensors over a 100 m cable length, while the RS485 network can support up to 255 sensors.
Installation: For optimal performance, the card should be installed close to the sensor to reduce electrical noise. An optional IP-65 enclosure is available for additional protection.
Software: The Q-LOG software, available for free download, facilitates configuration changes, test measurements, and data recording.
Customization: The card can be customized for OEM applications, with further details available from Keynes Controls.
Strain Gauge Interface: The card provides bridge excitation and measures sensor output, returning values in milli-V/Volt. It does not automatically correct for bridge zero offset, requiring post-processing for error correction.
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Catalog excerpts

Strain Gauge Interface-1

Strain Gauge Interface Single Channel Strain Gauge / Load Cell SDI-12 and RS485 Int Strain Gauge Interface Single Channel Strain Gauge / Load Cell SDI-12 and RS485 Interface Card Support for 300 to External bridge c Precision Temper User Programmab SDI-12 & RS485 D Extended SDI-12 A 24 Bit ADC Analog Low Power - Minim Engineering and R Free Applications 2.5 mm Pluggable -1-STRAIN-24-SD85 is an intelligent general purpose strain gauge interface table for direct connection to strain gauges and load cells. The device can be ed to any suitable device supporting the SDI-12 network and is fully ed into the free Keynes Controls Q-LOG Data Display and Recording e.. The card has been has the ability to be No special installatio and sensor cables s front and back of the d has an SDI-12 and RS485 port which are User selectable using industry d configuration commands. -1-STRAIN-24-SD85 is User Programmable and can supply results in both engineering unit format. A precision temperature sensor input is supplied for ions when compensation is required. Connect the NP-1-S possible to the sens IP-65 enclosure is a nsor monitors the bridge excitation during the measurement and nsates automatically for any excitation variation during the data conversion . model EP-1-STRAIN-24_SD85 Load Cell Interface Card Free Applicatio The card is supplied used for Configurati The Q-LOG softwar P-1-STRAIN-24-SD85 PCB can be supplied customised for third party http://keynes-control ions. Contact Keynes Controls for more details. View looking into the Port Pin-out Sensor Input Port Image is for marketing image below.

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Strain Gauge Interface-2

swiss sensor technology Description The EP-1-STRAIN-24-SD85 is an intelligent general purpose strain gauge interface card suitable for direct connection to strain gauges and load cells. The device can be connected to any suitable device supporting the SDI-12 network and is fully integrated into the free Q-LOG Data Display and Recording Software.. The card has an SDI-12 and RS485 Modbus port which are User selectable using industry standard configuration commands. The EP-1-STRAIN-24-SD85 is User Programmable and can supply results in both raw or engineering unit format. A precision temperature...

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Strain Gauge Interface-3

Lowbridge Power - Minimi External completio Engineering Engineering and Se Ra Precision Temperature Free Applica swiss sensor technology Free Applications S User Programmable Scalin 2.5Pluggable mm Plugg Part Number : NP-1-STRAIN-24-SD85 Features 2.5 mm T SDI-12 & RS485 Digital Co Extended SDI-12 Address Dimensions A = ALength 7575 mm Figure Dimensions = Length mm BB==24 24 mm mm Figure 1 1 Support for 24 Bit ADC Analogue Inpu External se b Low Power - Minimised The NP-1-STRAIN-24-SD85isisan anintelligent intelligent general strain gauge interface The card been The NP-1-STRAIN-24-SD85 generalpurpose...

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Strain Gauge Interface-4

swiss sensor technology Strain Gauge Interfa Single Channel Strain Gauge / Load Cell SDI-12 an SDI-12 network The Network figure below demonstrates how to connect multiple EP-1-STRAIN-24-SD85 SDI-12 cards on a SDI-12 digital network. Each card must have a unique ID number assigned (Address) in order to operate correctly. The SDI-12 network uses a simple three wire low speed application. specification the number of sensors to on a SD Figure A below demonstrates how to The connect multiplelimits NP-1-STRAIN-24-SD85 cards 10 The cards support enhanced addressing - so you get additional device address...

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Strain Gauge Interface-5

swiss sensor technology Technical Specifications Power Supply Input Range +/- 70 mV Other ranges on request 1 x Port, Version 1.03, 1200 B, 7 Data, N Parity, 1 Stop 1 x Port, 1200 B, 7 Data, Even Parity, 1 Stop Bridge exitation Temp Sensor Thermistor Type 3 K EC95 F type material 10K3A1 Betatherm Gauge resistance Gauge factor User defined www.enertec.ch www.enertec.ch

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Strain Gauge Interface-6

swiss sensor technology ENERTEC ENGINEERING AG Bürglistrasse 29 8400 Winterthur Switzerland Tel. +41 (0)52 202 54 34

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