Sefram DAS1800 High Speed Modular Data Acquisition System

Description

Sefram DAS1800 High Speed Modular Data Acquisition System

The DAS1800 is an exceptional high-speed modular data acquisition system, expertly designed to be easily configured for a wide range of applications.

With 10 slots for input modules and a user-friendly plug-and-play design, achieving optimal setups is quick and straightforward. Users can confidently choose from a variety of modules (universal, high impedance, high voltage and multiplexed) to measure voltage, current, resistance, and temperature with precision.

	Universal	High Impedance	High Voltage	Multiplexed
Channels	4	4	4	8
Maximum Voltage	± 600 VDC	± 600 VDC	± 1500 VDC	± 48 VDC
RMS Voltage	424 VRMS	424 VRMS	1000 VRMS	–
Resolution	16 bit	16 bit	16 bit	18 bit
Sampling Rate	1 MSa/s/ch	1 MSa/s/ch	1 MSa/s/ch	5 kSa/s
Input Impedance	1 MΩ	10 MΩ	10 MΩ	2 MΩ
Input Type	Single Ended	Single Ended	Differential	Differential
Isolation	√	√	√	–
Voltage	√	√	√	√
Current	√	√	√	√
Thermocouples	√	√	–	√
RTDs	–	–	–	√
Frequency	√	√	√	–
Counter	√	√	√	√
PWM	√	√	√	–

For high-speed measurements, the D18-UNI4, D18-HVM4, and D18-HIZ4 modules deliver 4 channels each, offering simultaneous sampling rates of up to 1 MSa/s per channel. The D18-HVM4 module stands out by measuring high voltage signals up to ±1500 VDC or 1000 Vrms, all while guaranteeing safety with CAT III 1500 V and CAT IV 1000 V ratings.

When it comes to low-voltage measurements and slow-changing trends, the D18-MUX8 module excels, providing 8 channels with multiplexed sampling and rates of up to 5 kSa/s.

Varying Sampling Rates

The DAS1800 sets itself apart with its variable sampling rate capabilities, allowing users to efficiently capture both transients and trends within the same file, without the risk of missing or duplicating critical data. Users can configure up to four distinct sampling rates within a single recording. Coupled with advanced triggering and a robust 2 TB solid-state drive, this recorder offers the longest recording time in any data acquisition system on the market.

Power Analysis

In addition to analogue signal acquisition, the DAS1800 integrates comprehensive power analysis, delivering Class S power quality measurements for DC, single-phase, and three-phase networks up to 1500 V DC or 1,000 Vrms. This powerful feature enables simultaneous measurements of up to five networks, effectively supporting frequencies of 50 Hz, 60 Hz, and 400 Hz. Users can also calculate and record power and energy parameters alongside voltage, current, and other analogue inputs in real time, ensuring comprehensive data analysis.

Portable

Portability does not come at the expense of features or performance with the DAS1800. The battery-configured base unit, weighing about 15 lbs (6.8 kg), is the lightest all-in-one system in its class, with each module adding only around 1.2 lbs (0.55 kg). The internal battery option provides an impressive 3.5 hours of field operation (or 1.5 hours with 10 D18-UNI4 modules), and the 15.6-inch Full HD touch screen ensures effortless setup and data visualisation.

User Interface and Built-In Sensor Library

Furthermore, the user interface is designed for efficiency, featuring one-finger scrolling and pinch-to-zoom functionalities. It includes a built-in sensor library and visualisation options such as real-time waveforms, numeric values, phasor diagrams, and histogram charts. DASpro software is readily available for PC data viewing, and the DAS1800 supports web server and VNC for seamless remote control.

Key Features

Stream 40 channels at 1 MSa/s/ch
Up to 80 analogue inputs with D18-MUX8 multiplexed module
Measure up to ± 600 VDC
10 slots and 4 measurement modules available
- Universal (4 ch)
- Multiplexed (8 ch)
- High Impedance (4 ch)
- High Voltage (4 ch)
Temperature measurements with thermocouples and RTDs
Store sensor information and parameters in the sensor library
Simultaneous recording at multiple sample rates (up to 4)
Internal signal conditioning with analogue and digital filters
15.6” Full HD touchscreen display
2 TB internal SSD (standard)
Advanced calculations and automatic measurements
Battery option (up to 3.5 hours of operation)
16 digital input channels (24 V) and 4 digital outputs
Dedicated power outputs for sensors with +3.3 V, +5 V, +12 V, or +24 V excitation voltages
Interfaces include USB 3.0 (x2), USB 2.0 (x2), LAN 1 Gbps (x1), and HDMI (x1)
Rugged carrying case included

Sefram DAS1800 Data Acquisition System

Recording (files written to SSD)
Max Sampling Rate *1	1 MSa/s up to 40 channels
Recording Groups	4
Write Speed	120 MB/s (7 GB/min)
File Format	ASAM MDF4 (.mf4)
File Size Limit	90% of disk capacity
At End of Acquisition	Notify, rearm trigger
Markers	On user action, On event
Real Time Measure
Display Mode	F(t)	Roll mode: 100 ms/div to 10 min/div Scope mode: 10 μs/div to 50 ms/div
	DMM	Acquisition time: 200ms (10 NPLC 2 at 50Hz), 2s (100 NPLC 2 at 50Hz)
	Record live view	Typical Refresh period 2s, Zoom Mode
	Custom	Customize up to 10 dashboards with unique widget arrangements Widgets: F(t), Record Live F(t), DMM, Phasor diagrams, Histogram, Images
File Viewer
Open File Time (typical)	10 sec per 100 GB of file *3
Subplot	16
Cursors	Horizontal, Vertical
Measurements	On the data displayed or between cursors Min, Max, Pk to Pk, Frequency, RMS, Rising time
Trigger System
Compute Period	1 µs
Source	Analogue and Logic Channel, external source, manual, date/time, delay (on start), duration (on stop), AND/OR combination of channels (128 max)
On Analogue Channel	Edge (rising, falling, both), Threshold (above, below), windows (in, out)
Pre-trigger	128 M samples
Post-trigger	1000 s maximum

Digital I/O

Input
Number of Channels	16
Max Voltage	24 V
Threshold	1.2 V to 2.8 V
Sampling Interval	1 μs (1 MSa/s) each channel
Output
Number of Channels	4
Output Characteristics	TTL 5 V, 10 mA
Trigger Source	Analogue/Digital channels, acquisition start/stop, disk full
Power Supply *4	+ 12 V ± 5 %, 200 mA

Power Supply Outputs

Maximum Power Consumption	5 W
Output Characteristics	+ 3.3 V ± 5%, 500 mA + 5 V ± 5%, 500 mA + 12 V ± 5%, 400 mA + 24 V ±5 %, 200 mA

Synchronisation I/O

On Synchronisation Connector (SUB-D 15 HD pin)
Input	Signal Level	TTL 3.3 V
	External Trigger	Pull-up resistor: 10 kΩ, Rising edge sensitive Minimum pulse width: 100 μs
	External Start/Stop	Pull-up resistor: 10 kΩ, Rising edge sensitive for start Falling edge sensitive for stop Minimum pulse width: 500 ms
Output	Signal	TTL 3.3 V
	Trigger	1 ms positive pulse at trig event
	Start/Stop	Set when record is launched
IRIG and GPS (option)
IRIG / GPS Input	IRIG format B122/B126 Time error between reference clock and acquisition clock, < ± 10 μs
PTP (option)
Ethernet PTPV2 IEEE1588	Time error between reference clock and acquisition clock, < ± 10 μs

Software Feature

Remote Access	VNC for remote monitoring and control
	Web Server
	File Management	FTP NAS (Network storage for file backup)
	Bench Automation	SCPI command port (23 or 5025)
Sensor Library	Predefined sensors and user created
Date and Time	Manual, NTP
Software Update	Through web or USB
Languages	English, French

*1 For D18-UNI4 and D18-HIZ4 Module
*2 NPLC: Number of power line cycles
*3 Time with only the 1st frequency group used
*4 Used to power the isolated digital input boar

Power Analysis

General
Network Type		DC; AC: Single-phase (1U/1I), 3-phase delta (3U/3I), 3-phase Wye in 3-wire (3U/3I) and 4-wire (4U/4I)
Network Frequency		DC, 50Hz, 60Hz, 400Hz
Sampling Rate		10 kHz
Number of Networks		5
Compatible Modules		D18-UNIV4 & D18-HVM4 & D18-HIZ4
Record File		MDF4
Calculation Interval
Network Frequency	1st Interval	2nd Interval	3rd Interval	4th Interval	5th Interval (custom)
DC	200 ms	3 s	10 min	2 h	1 ms to 100 ms
50 Hz	10 periods	150 periods	10 min	2 h	1-2-5 period
60 Hz	12 periods	180 periods	10 min	2 h	1-2-5 period
400 Hz	80 periods	1200 periods	10 min	2 h	1-2-5-10-20-40 period
DC Measurements
Voltage		Mean, Max, Min, peak-to-peak			0.1% Udin *5
Current		Mean, Max, Min, peak-to-peak			0.1% Idin *6
Power		Active			0.1% Pdin *7
Energy		Active			-
AC Measurements
Voltage		Mean, Max, Min, peak-to-peak, RMS, Crest factor			0.1% Udin *5
		Phase to ref channel			± 0.5˚
Current		Mean, Max, Min, peak-to-peak, RMS, Crest factor			0.1% Idin *6
		Phase			± 0.5˚
		K factor			0.1%
Power		Active, Reactive, Apparent			0.1% Pdin *7
Power Quality		cos (Ф)			± 0.01
		tan (Ф)			-
		Ф			± 0.5˚
		PF			± 0.001
		THD			1.0%
Energy		Active, Reactive			-
Voltage Harmonics		50 Hz, 60 Hz: 1 to 50 harmonics			0.1% Udin *5
		400 Hz: 1 to 10 harmonics
Current Harmonics		50 Hz, 60 Hz: 1 to 50 harmonics			0.1% Idin *6
		400 Hz: 1 to 10 harmonics

*5: Udin— Nominal network voltage
*6: Idin— Nominal network current
*7: Pdin— Nominal network power (Udin*Idin)

General

Internal Solid State Memory	2 TB SSD 3D TLC NAND
Operating Temperature	0 °C to 40 °C
Storage Temperature	-20 °C to 60 °C
Display	15.6” TFT LCD full HD 1920 x 1080
Power Supply	110 VAC to 240 VAC ± 10%, 50 to 60 Hz (150 VA max) Protection: Fuse 2 x T4AL250V, 120 VDC to 370 VDC
Interfaces	USB 3.0 (x2), USB 2.0 (x2) , LAN 1 Gbps (x2), HDMI (x1)
Battery (optional)	Non removable, Lithium-ion
Battery Life (typical)	3 ½ hrs - One D18-UNI4 module installed 1 ½ hrs - Ten D18-UNI4 modules installed
Weight	6.8 Kg base unit + battery option 550g per module
Safety	Low Voltage Directive (LVD) 2014/35/EU EN 61010-2010+A1:2019, EN 61010-2-030 (2021+A11/2021) UL/CSA 61010-1 UL/CSA 61010-2-030 UL 61010-1:2012 R6.23 CAN/CSA 61010-1-12 + (R2022 R6.23 UL 61010-2-030:2018 CAN/CSA-C22.2 No. 61010-2-030:18
Electromagnetic Compatibility	EMC directive 2014/53/EU EN IEC 61326-2-1 (2021) EN IEC 61326-1 (2021) EN 61000-3-2 (2019+A1/2021) EN 61000-3-3 (2013+A1/2019)
Dimensions (W x H x D)	485 x 280 x 200 mm
Warranty	3 Years
Supplied Accessories	Power cord, SUB-D 25 pin male connector and back shell, SUB-D 15 HD pin male connector and back shell, 8 pin connector, rugged carrying case