8/16-channel smart sensor interface | Model 2518DIN/2519DIN

Model 2518DIN/2519DIN is obsolete. This archived information is provided as a courtesy to customers who own model 2518DIN/2519DIN units.

Description

Models 2518DIN and 2519DIN are low cost-per-channel Ethernet interfaces for measuring voltage, resistance, and thermocouple, RTD, thermistor, and strain gauge sensors. They provide excitation for passive sensors and feature 16-bit resolution from either eight (2518) or sixteen (2519) differential input channels, each individually programmable for a different sensor type.

The entire acquisition process — sensor excitation, analog-to-digital conversion, cold-junction compensation, linearization, and conversion to engineering units (e.g., V, °C) — is performed in under 22 milliseconds per channel for each group of eight channels. Model 2519DIN has two A/D converters that concurrently process two groups of eight channels for higher throughput. Sensor data is acquired continuously and stored in on-board memory so that the host computer can access it without waiting for conversions.

Block diagram

Calibration

Models 2518DIN and 2519DIN periodically sample precision internal references and use the acquired samples to compensate offset and gain drift. Reference data is factory calibrated and stored in non-volatile memory so boards can be easily installed and interchanged. The boards employ fully electronic calibration to eliminate mechanical trimpots and the need for physical board access.

Ethernet

The unit can process over 1500 UDP-based messages per second over 10Base-T Ethernet. The three high-order IP address bytes must be specified upon ordering from Sensoray. For example, if the unit is to operate at 192.168.2.x, specify "192.168.2" when ordering. The fourth, "x" byte is field-programmable via shunts.

Field Wiring

Sensor wires directly connect to removable terminal blocks that are supplied with the unit — no external breakout boards are required. Each sensor channel has five conductors: two for sensor power, two for voltage measurement and one for a shield.

Terminal blocks connect directly to field wiring

Mechanical

The 2518DIN/2519DIN modules mount directly onto standard DIN rails.

2519DIN in a Nema enclosure

Power Supply

Several optional line-operated power supplies are available.

A model 201 supplying power to two sensor interface modules

Specifications

Analog Inputs
Number of channels	Model 2518: 8 channels Model 2519: 16 channels
ADC resolution, type	16-bit, integrating
Conversion time	22 ms/channel
A/D scan rate	45 samples/second
Input resistance	1000 MΩ
CMMR (min)	95 db
CMV (max)	±5 V
Ethernet
Physical layer	10Base-T
Transactions/second	1600
Connector type	RJ-45
Environmental
Operating temperature	-25 to +85 °C
Input power	12-30 V AC/DC
Dimensions	(W x H x D): 9.42 x 3.80 x 1.87 inches

Sensor Types
Thermocouples	J, K, T, S, E, B, N, C, R
Platinum RTD	100 Ω, types 385 and 392
Nickel RTD	120, 200, 1000 Ω
Copper	10 Ω
Thermistors	10000 Ω, YSI types 44006 or 44031
Strain gauges	120 to 4000 Ω
Sensor	Resolution	Range
Thermocouples	0.1 °C	-270 to 1760 °C
Thermistors	0.01 °C	-55 to 145 °C
Resistors	0.02 Ω 0.125 Ω 31 Ω	0 to 400 Ω 0 to 3 kΩ 0 to 600 kΩ
RTDs	0.05 °C 0.0125 °C	-200 to 800 °C 0 to 400 °C
Strain/Pressure	5 µV	±100 mV
DC voltage	5 µV 20 µV 200 µV	±100 mV ±500 mV ±5 V

Documentation

File	Version	Date M-D-Y	Type	Size
Model 2518 Technical Manual	1.0.0	10-17-24	PDF	246 KB

Downloads

File	Version	Date M-D-Y	Type	Size
Smart A/D Software Development Kit	1.0.2	10-17-24	ZIP	243 KB
Other Operating Systems
Need a software development kit for another operating system? We can port our SDK to your OS for a NRE fee or, with a volume commitment, at no additional cost. Contact Sales for details.

Pricing & Ordering

Model	Description	Qty 1	Qty 2-9	Order Qty.
2518DIN	8-channel smart sensor interface, DIN rail mountable	$593	$561
2519DIN	16-channel smart sensor interface, DIN rail mountable	$829	$808
Power Supplies
201	24 V 10 Watt power supply	$186	$167