7021 8 channel analog input module (V, I, Tc, PRT & Strain)
No longer available. For information purposes only.
Description
The Datascan 7000 series is designed to provide a simple reliable accurate and cost effective means of connecting plant sensors to standard computers for real time monitoring and data acquisition.
The 7021 Analog Input expansion module includes 8 integral 6-pole differential Input Channels, individually configurable for Voltage, 4-20mA Current, Thermocouple, Strain, PRT, and Resistance measurement.
It provides cost-effective expansion for the Datascan Measurement Processors (7010, 7320,7321) with up to 16 of these modules being added to a single Measurement Processor unit.
Features
- Local measurement speed up to 400 readings/sec over the network
- Channel mix and match capability
- Individual channel programming of sensor type and speed
- Digital configuration permitting mix and match of analog and digital inputs
- Compact Rugged DIN rail mounted
- Quoted accuracies guaranteed for 12 months includes all errors
- Direct Sensor connection for DC voltages, Thermocouples, strain gauges, RTD’s, resistance, and 4-20 mA converters
- Inbuilt Cold Junction compensation
- On-board energization for RTDs and strain gauges.
- 16-bit measurement performance with 0.625µV sensitivity
- Solid-state differential inputs
- High Common-Mode and Series Mode rejection
NOTE: Module supports 4/5/6 wire PRTs Only. A 7021-3 module is available for 3-Wire PRT Applications but Strain and other PRTs can no longer be used.
Specifications
- No of Inputs: 8
- Sensor Types:DC Voltage, Thermocouples, 4-20 mA, Strain, Resistance, PRT/RTD
- Resolution:16 bits @ 40 rdgs/sec; 14 bits @ 400 rdgs/sec
- Input Impedance:30M ohms
- DC voltage ranges :10 V, 1.3V, 150mV, 20mV, Auto
- Resolutions :320 uV, 40 uV, 5 uV, 0.625uV
- Accuracy: +/-0.02%rdg+0.01%range+1bit
- Resistance thermometers PT100
- Strain Gauges : Full 1/2 1/4 bridge
Documentation
Most major SCADA packages support Datascan and an OPC Server is also available. Please contact us for more information.
- 7021 Datasheet [7021 Datasheet]
- Datascan Brochure [Broshure]
- Datascan User Guide [User Guide]
- Temperature Spec [Temperature]
- Voltage Spec [Voltage]
