Enciris Technologies :: Analog I/O boards :: Model 618

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Model 618 | Smart A/D

Features

Supports thermocouples, RTD’s, strain gauges, voltage in, 4-20 mA, thermistors, and resistors
8 differential input channels plus sensor excitation
Each channel is software programmable for sensor type, gain, low-pass filtering, scan rate
Auto-calibration eliminates trimpots
Low power consumption

Description

The Sensoray Models 618 offer a cost-effective way to acquire sensor data for any PCI bus system. They feature 16-bit resolution from 8 channels, each individually programmable for a different sensor type. Analog- to-digital conversion is performed in under 22 milliseconds, providing 45 channels per second scan rate.

The 618 adapter boards plug directly into any PCI bus computer. Linearization, calibration, and sensitivity are software programmable, eliminating trim potentiometers and the need for board access. Sensor field wiring is accomplished with a 37-conductor flat cable and remotely mountable screw- termination board, either model 7409TB or model 7409TDIN with DIN rail mounting hardware.

Calibration
Models 618 automatically self-calibrate by measuring internal precision references. Reference data is stored in EEPROM so the adapter board may be easily interchanged. Signal conditioning is provided for thermistors, RTD’s, thermocouples, strain and pressure, resistance and voltage inputs. Standard correction for nonlinear sensors is built in. Custom compensation can be down loaded.

Excitation
A pulsed constant-voltage source is provided for strain and pressure sensors. A pulsed constant-current source is provided for resistive sensors. Lead loss errors from RTD’s, thermistors, and resistors are eliminated with the use of a four-wire circuit.

An on-board microprocessor continually scans the active sensor channels. Each channel is amplified, digitized, filtered, converted to engineering units, and stored in on-board memory. This process is independent of host CPU activity.

Application Notes
Thermocouples >> Lead loss errors >> Typical sensor connections >> Low-Level Programming of 618/19

Software & Manuals
The included SDK18 software has a DLL for Windows 98/NT/2000.
A ready-to-go data acquisition program, QuickSense, is available as an option.
618/619 Instruction Manual >> Released 3/7/00
SDK18 (32-bit DLL) >> Released 5/1/03
Windows 2000\XP Driver >> Released 7/9/04

Mechanical Drawings and Images

618/619 Typical Application

General Specifications
Input resistance	1000 Megohms
CMMR	95 dB min
Max input voltage	63 VAC rms
Max common mode	+/-5 volts
A/D converter	16-bit integrating
Conversion time	22 mS per channel
Operating temperature	-25C to 85C
A/D scan rate	45 samples/sec
Bus interface	PCI
Input power	5 volts at 100 mA \| 12 volts at 35 mA
Sensor Types, Resolution, Range and Codes
Sensor connector pinout

Details

SKU	SKU16641
Weight	300.00 g
Single item price(ex. VAT):	Contact us for pricing!

	Contact us for availability

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Accessories

	Model 7409TB \| Termination Board
	Model 7409TC \| Termination Board
	Model 7409TDIN \| Termination Board
	Model 7506TDIN \| 40 Contact Terminal Board
	Model QuickSense