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Multiplexed Module for the DAS1800 and DAS1820 from B&K Precision and Sefram Instruments.
Configure the DAS1800 to fit your needs with any combination of modules up to 10.
Select any 2 modules in the portable DAS1820.
| 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 | √ | √ | √ | – |
| Number of Channels | 8 | |
| Input Type | Non-isolated differential input – 4 pin terminal block, Part: Phoenix Contact MC 1.5/ 4-ST-3.5 |
|
| Max. Input Voltage | ± 48 VDC between CH to GND and between 2 poles on a channel |
|
| Range | 16 Ranges: ± 500 μV / 1 mV / 2.5 mV / 5 mV / 10 mV / 25 mV / 50 mV / 100 mV / 250 mV / 500 mV / 1 V / 2.5 V / 5 V / 10 V / 25 V / 48 V |
|
| Admissible Common Mode |
≤ ± 1 V | ± 3 V |
| ≥ ± 2.5 V | ± 48 V | |
| DC Accuracy *1 | ≤ ± 10 mV | ± 0.1% of full range + 5μV |
| ≥ ± 25 mV | ± 0.04% of full range | |
| Offset Drift | ± 50 ppm/°C ± 0.5 μV/°C | |
| Input Impedance | 2 MΩ for ranges ≥ ± 1 V, 25 MΩ for ranges ≤ ± 0.5 V | |
| Input Capacitance | 150 pF | |
| Intrinsic Noise *2 (standard deviation in % of the span) |
≤ ± 1 mV | < 0.15% |
| ± 2.5 mV to ± 10 mV | < 0.05% | |
| ≥ ± 25 mV | < 0.01% | |
| CMRR | > 70 dB | |
| Crosstalk | > -90 dB | |
| Bandwidth (-3 dB) | 1 kHz | |
| Digital Filter | IIR 4th order (-80 dB/dec) | 0.01 Hz to 500 Hz |
| Type | Low-pass | |
| Filter | Butterworth | |
| ADC | 18 bit – SAR | |
| Sampling Interval | 200 µs (5 kSa/s) each channel | |
| Compute Frequency | 4 ms | |
| Current | Pt100 | 1.0 mA |
| Pt200 | 0.5 mA | |
| Pt500 | 0.2 mA | |
| Pt1000 | 0.1 mA | |
| Temperature Range | -200 °C to +850 °C | |
| Wiring | 2 Wires | Max. corrective resistance 50 Ω |
| 3 Wires | Max. 3-wire resistance, 50 Ω | |
| 4 Wires | ||
| Measurement Range (7 Ranges) |
± 10 °C, ± 25 °C, ± 65 °C, ± 130 °C, ± 200 °C, [-200 °C, +380 °C], [-200 °C, +850 °C] |
|
| Accuracy | 3 Wires | 0.1% of the range ± 0.3 °C |
| 4 Wires | ± 0.1% of the range ± 0.2 °C | |
| Compute Frequency | 4 ms | |
| Cold Junction | Uncompensated, internal, external (other channel) | |
| Accuracy *3: ± 1.25 °C | ||
| Type | J | -210 °C to 1200 °C |
| K | -250 °C to 1370 °C | |
| T | -200 °C to 400 °C | |
| S | -50 °C to 1760 °C | |
| B | 200 °C to 1820 °C | |
| E | -250 °C to 1000 °C | |
| N | -250 °C to 1300 °C | |
| R | -50°C to 1768°C | |
| Compute Frequency | 4 ms | |
| Wiring | 2 Wires | Max. corrective resistance 50 Ω |
| 3 Wires | Max. 3-wire resistance, 50 Ω | |
| 4 Wires | ||
| Measurement Range (4 Ranges) |
300 Ω (1 mA), 1500 Ω ( 0.5 mA), 5k Ω (0.2 mA), 10 kΩ (0.1 mA) |
|
| Accuracy | ± 0.1% of the range ± 0.1 Ω | |
| Threshold | Set by user, auto | |
| Minimum Pulse Width |
1 ms | |
| Counter | 32 bits | |
| Current | Through shunt or clamp | |
| Sensor | 0 to 10 V, 4 to 20 mA (with external shunt), other user defined settings | |
Note: All specifications apply to the unit after a temperature stabilization time of 30 minutes over an ambient temperature range of 23 °C ± 5 °C.
(*1) Direct measure taken on DMM at 10 (50 Hz) / 12 (60 Hz) NLPC (200 ms) and full bandwidth
(*2) Measure ± short circuit termination to 50 Ω on chassis during 1 sec at the fastest acquisition speed and full bandwidth
(*3) Only when cold junction adjustment has been performed after installing a new module. Otherwise accuracy is ±3 °C
