NAS1800

Introduction
NAS 1800 is a data logger designed specifically for field data logging and control applications, including geotechnical, architecture, mining, and structural researching; it also has the accuracy and flexibilities that suit well in general purpose test and measurement tasks.
This self-contained data logger accurately reads voltage, current, resistance, temperature, frequency, period, duty cycle, revolution speed and many other corresponding physical quantities.
The bundled FDLogger Scan Planner let you to configure sensor types, trigger condition, data transmission and alarm, etc., and can have your measurement task start in less than 10-minutes.
The multi-SENSE® Technology
An innovative technology derived from our expertise in signal conditioning and processing. The multi-SENSE® analog frontendworks in harmony with sensors, automatically selects proper gain setting, driving topology and signal paths, and also eliminates the needs for bulky external signal conditioning techniques as well as custom circuits.
To retrieve sensor readouts, simply connect and specify the sensor type in software, then, let multi-SENSE® do the rest. NAS 1800 returns physical units directly to you, not again meaningless ADC codes.
Self-contained Logging and Alarm
The measurement task can be set to run at specific intervals, or under user definable trigger events. The recorded values are saved in the internal Flash memory, and thresholds can be defined to trigger alarms.
The stored data can be retrieved and monitored hundreds of meters away through an isolated, industrial-grade RS-485 link. NAS 1800 can turn into a remote data-acquisition device within minutes.
Ultra Low-power Operation
NAS-1800 comes with sophisticated power management circuitry that put itself into suspend mode when there is no measurement task to run, and cuts power consumption to 0.05W.

You can even configure and reduce the power consumption of your entire sensors network via FDLogger Scan Planner, which switches on the power source only when it is necessary.Ordering Information

NAS-1800-16

4-Ch multi-SENSE® AI, 6-Ch Aux Voltage Input with 3-ch isolated counter and 2-ch Relay output Data Logger. 16MB on-board memory.

NAS-1800-16-SPC

NAS-1800 with built-in Solar charger for SLA Battery power backup.

Specification
Listed specifications were tested under an ambient temperature of 25°C unless otherwise noted. All values shown are typical performance except otherwise noted. Specifications are subject to change without prior notice.

Analog Input Channels with MultiSENSE®
Number of Channels	4	Ch
Input Scheme	Multiplexed
Measurement Ranges	±40V, ±5V, ±2.5V, ±1.25V, ±625mV, ±78mV
Measurement Modes	Voltage (V),Current (A), Resistance (Ohm), Temperature (⁰C/⁰F), Frequency (Hz), Period (sec), Switch Closure (counts), Vibrating Wire (Digits/Hz/Period)
Tare (Zeroing)	On per channel basis
Max. Tolerant Voltage	±60	Volt
Internal Resolution	24	Bits
Input Coupling	DC
Trigger Source	Software, Time, Digital, Isolated DI
Max. Convert Speed	1,000	sa/sec
Max. Aggregate Rate	100	ch/sec

Voltage (V)
Input Topology	1 DIFF or 2 SE	Channels
Measurement Range	±40	V
Input Impedance
40V Range	100k	Ohm
All Other Ranges	> 1G	Ohm

DC Absolute Accuracy
40V Range	0.2 % of Reading + 2mV
All Other Ranges	0.01 % of Reading + 220uV
Gain Tempco
40V Range	150	ppm
All Other Ranges	25	ppm

Noise
40V Range	1,100	uVrms
All Other Ranges	7.5	uVrms

Current (A)
Measurement Range	±25	mA
Compliance Voltage	10 to 60	V
Conversion Resistance	249	Ohm
Actual Input Impedance	400	Ohm
DC Absolute Accuracy	0.01 % of Reading + 0.9uA
Gain Tempco	150	ppm

Resistance (Ohm, mV/V, %)
Supported Topology	Quarter-bridge (2/3/4-wire), Half-bridge (3/4/5-wire), Full-bridge (4/5/6-wire)
Sensor Excitation	2.048, 4.096, or 8.192	Vpp
DC Error Cancellation	Phase Reversal Type
DC Absolute Accuracy	TBD
Gain Tempco	TBD	ppm

NTC Thermistors (Ohm, ℃, ℉)
Supported Types	3k, 10k, 30k, etc.

Wiring Method	2-wire, 3-wire
Curvature Correction	Look-up-table
Absolute Accuracy	Sensor Error + 0.3	°C

Frequency (Hz), Period (Sec)
Frequency Range	0.01 to 10k	Hz
Period Range	100 to 100u	Sec
Duty Cycle Range	0 to 100	%
Input Coupling	DC or AC
Input Impedance	2.7k	Ohm
Timebase Frequency	Internal 10M	Hz
DC Absolute Accuracy	TBD
Gain Tempco	TBD	ppm

Vibrating Wires (Digits, Hz, Sec)
Frequency Range	400 to 6k	Hz
Input Coupling	DC
Driving Strength	4.096, 8.192	Vpp
Input Impedance	1M	Ohm
Timebase Frequency	50	ppm
Absolute Accuracy	0.1	%

Dry Contact Inputs with Isolated Counter Function
No. of Channels	3	Ch
Max. Input Voltage	±40	V
Input Coupling Type	DC
Logic Level	\|VIL\|: <0.9V, \|VIH\|: >5.6V
Input Impedance	2.4k	Ohm
Counter Width	16	bits
Quadrature Encoder Mode	AB-Phase Quadrature, or Single Phase with DIR Input
Zero/Home Support	Z Input at Channel 3

Relay Output
Channel	2	Ch
Output Type	Form C (NO, COM, NC)
Max. Current	2	A

Max. Voltage	125 Vac or 125 Vdc
Max. Switching Power	30W

Programmable Digital IO
Channel	12	Ch
Input Impedance	330k	Ohm
Output Impedance	330	Ohm
Max. Input Voltage	(current limited) ±40	Volt
Logic Level	VIL: <0.9V, VIH: >2.4V
Channel Expansion I/O	Control up to 4 external analog multiplexers via DIO

On-board Peripherals
Real-time Clock (RTC)	Built-in, w. 2-yr retention
Time-stamp Format	MM/DD/YYYY HH:MM:SS, Julian Date/Time
Flash Memory	16M	bytes

Communication Interfaces
Interface	Half-duplex RS-485,115k	bps
Protocol	MODBUS
IO Protection	-7 to +12	V
Transmission Range	1000	m

Power Requirements
Power Input Range	6 to 27	VDC
Power Consumption	2.5W (Full Load), 0.05W (Suspend)
Current Consumption @ 12Vin	210mA (Full Load), 4mA (Suspend)

Mechanical and Environmental
Dimension (LxWxH)	230 x 120 x 56	mm
Analog/Digital Connectors	Detachable, 5.0mm Euro-style terminal block
RS-485 Connectors	Detachable, 5.0mm Euro-style terminal block
Operating Temperature	Non-condensing , -20 to 70	°C
Storage Temperature	Non-condensing , -40 to 80	°C
ESD Protection	Air discharge 8kV
EMI Regulation	CISPR A, FCC CLASS A, CE