B&K Precision DAS240-BAT Portable Multi-Channel Recorder

Key Features At A Glance

• 20 universal analog input channels, expandable to 200 channels with optional 20-channel modules
• 16-bit vertical resolution with recording intervals down to 1 ms
• Wide 10-inch color touchscreen TFT display (1024 x 600) for waveform and numerical viewing
• Supports 9 thermocouple types (J, K, T, S, B, E, N, C, L) plus 2- and 3-wire Pt100/Pt1000 RTDs
• Voltage measurement to ±100 V DC, resistance to 10 kΩ; current measurement available with optional 50 Ω shunt terminal block
• 12 logic I/O channels plus 4 timing logic inputs for pulse count, frequency, and PWM measurements
• LAN and dual USB host interfaces; built-in VNC for remote front-panel control over a network
• Battery-powered portable operation with up to 15 hours runtime (standby mode) and 32 GB internal storage

The B&K Precision DAS240-BAT is a portable multi-channel recorder designed to measure parameters commonly found in process applications, including voltage, temperature, current, resistance, frequency, and pulse signals. Developed by B&K Precision's French subsidiary Sefram, the unit ships standard with 20 universal analog input channels on convenient screw input terminal blocks, and the channel count can be expanded up to 200 channels by stacking and daisy-chaining additional 20-channel modules.

According to the printed application list, the DAS240-BAT addresses temperature monitoring with thermocouples and platinum resistance temperature sensors, voltage measurements down to the ±0.5 mV range, 4-20 mA current loop measurements (using the optional 50 Ω shunt terminal block), and frequency, pulse totalization, and pulse rotation measurements that can be expressed in RPM. The combination of universal analog channels, logic I/O, and timing inputs makes the instrument suitable for mixed-signal data logging on a single platform.

Brand Heritage

B&K Precision Corporation acquired Sefram Instruments, a French manufacturer specializing in recorders, field strength meters, and other test and measurement instruments. The DAS240-BAT is developed by Sefram and distributed under the B&K Precision brand in North America.

Accessories Supplied

• Main adapter 100 / 240 V
• Manual (CD-ROM)
• 1 male connector with 25 pins male and cover
• 1 cable (70 cm) for measurement module connection
• 1 measurement module (20 channels) with input terminals
• Stylus
• Soft wipe
• Screwdriver

Product Core & Specifications

Analog Channels
Number of Analog Input Channels	20 channels standard, expandable to 200 with optional 20-channel modules
DC Voltage
Ranges	± (0.5, 1, 2.5, 5, 10, 25, 50, 100) mV; ± (0.5, 1, 2.5, 5, 10, 25, 50, 100) V
Maximum input Voltage	100 V DC
Accuracy	0.1% of the full scale ±10 µV
Temperature with Thermocouples (Cold junction compensation: ±0.5 °C)
Type J	-210 °C to 1200 °C
Type K	-250 °C to 1370 °C
Type T	-200 °C to 400 °C
Type S	-50 °C to 1760 °C
Type B	200 °C to 1820 °C
Type E	-250 °C to 1000 °C
Type N	-250 °C to 1300 °C
Type C	0 °C to 2320 °C
Type L	-200 °C to 900 °C
Temperature with Pt100 and Pt1000
Current	1 mA (Pt100), 100 µA (Pt1000)
Range	-200 °C to 850 °C
Measurements	2 and 3 wires
Accuracy (at 20 °C)	0.3 °C ±0.1% of reading
Compensated Resistance (2 wires)	30 Ω max.
Compensated Resistance (3 wires)	50 Ω max.
Resistance
Ranges	1 kΩ and 10 kΩ
Accuracy	1 Ω (range 1 kΩ) and 10 Ω (range 10 kΩ)
Logic Input/Output
Number of Channels	12
Maximum Permitted Voltage	24 V Cat I
Input Impedance	4.7 kΩ
Sampling Rate	1 ms max.
Timing Input
Number of Channels	4 (K1 to K4)
Maximum Permitted Voltage	24 V Cat I
Input impedance	4.7 kΩ
Sampling Rate	1 ms max.
Pulse Counter	0 to 10000000, accuracy 0.1%
Frequency Measurement	1 Hz to 10 kHz, accuracy 0.1%
PWM Measurement	100 Hz to 2 kHz, accuracy 0.1%
Alarm Output
Number of Channels	4 Alarms (A, B, C, D)
Output Level	0 to 5 V
Acquisition System
Resolution	16 bit
Acquisition System	Scan, one sample per channel
Sampling Rate (V >50 mV)	1 ms to 20 min
Sampling Rate (V ≤50 mV, thermocouples and Pt100 / Pt1000)	2 ms
Trigger	Date, delay, threshold, combination of thresholds (and/or), word on logic channels (and, or, slope, level)
Pre-trigger	Variable from 0 to 100k samples
Internal Storage
Internal Flash Drive Size	32 GB
Maximum File Size	2 GB
Environmental
Operating Temperature	0 °C to 40 °C, 80% RH (no condensation)
Storage Temperature	-20 °C to 60 °C
Auxiliary
Display	10" TFT touchscreen LCD, backlit, 1024 x 600 dots
Power Supply	15 V / 4 A max with main adapter (100 / 240 VAC)
Interfaces	2 x USB host, LAN (10/100 base-T with RJ45 socket)
Battery	Non removable, Lithium-ion
Typical Battery Life	15 hours with standby mode, 10 hours without stand-by mode
Safety	Cat I 100 V, according to IEC61010-1
Weight	3.3 lbs (1.5 kg)
Dimensions (W x H x D)	2.6" x 11.7" x 6.9" (66 x 298 x 176 mm)
Warranty	Two Years

Important: Maximum permitted voltage on logic and timing inputs: 24 V Cat I. Analog input maximum: 100 V DC, Cat I 100 V per IEC 61010-1.Important: Current measurement requires the optional 50 Ω (0.01%) shunt input terminal block (P/N 902406500), which is sold separately and is not included with the base unit.Important: Channel expansion beyond the included 20 channels requires optional 20-channel modules (P/N 902401000), sold separately. Maximum capacity is 200 channels (10 modules total).Recommended pairing: add the 902406500 4 to 20 mA / 50 Ω shunt terminal block to any 20-channel module to enable current-loop measurements alongside the standard voltage and temperature inputs.

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.