Dewetron DAQP-MULTI, Техническое справочное руководство

Страница: 10 / 18

10
DAQP-MULTI / DAQP-THERM
continued from page 77
Front panel control
LED indication:
Power LED: This LED is always on when the module is supplied.
Status LED: This LED has three functions:
It is flashing three times when the module receives a valid command.
It displays an input overflow if it flashes with the duty cycle
800 ms on / 200 ms off. In thermocouple mode this will indicate an open
thermocouple detection.
It displays an internal error if it flashes with the duty cycle
200 ms on / 800 ms off.
Push button operation:
Module readressing: Push the ID button for allowing the software to change the address.
Module reset: Press the
ID
button during power on, and keep it pressed for at least 5 seconds.
The module will reset to default settings.
Address: 0
Baud rate: 9600 bps
Module setup: Load backup setup and calibration data (last setup will be overwritten)
= DAQP-MUL
TI support only
DAQP-MULTI / DAQP-THERM
Input types
High speed thermocouple (TC)
High speed Resistance Temperature Detector (RTD); voltage; resistance; bridge with constant
current excitation
Thermocouple
Type K, J, T, R, S, N, E, B, L, C, U, others on request
Range Min. to max. of the input range is freely programmable within the full thermocouple input span
CJC absolute accuracy ±0.3 °C
CJC stability 0.03 °C/°C ambient temperature change
CJC equilibrium time 5 minutes
Accuracy Typical 0.4 °C for type K including CJC error;
details see table „Input ranges and detailed specifications“.
Linearization DSP based linearization
Nonlinearity < 0.01°C
Open thermocouple detection 100 MΩ pull up; software selectable
Connector Mini thermocouple socket with integrated cold junction compensation sensor
RTD
Type
Pt100, Pt200, Pt500, Pt1000, Pt2000, others on request
Range Min. and max. of the input range is freely programmable within the full RTD input span
Constant current
Pt100: 1 mA; Pt200, Pt500: 0.5 mA; Pt1000, Pt2000: 0.2 mA
Accuracy Typical accuracy 0.2 °C for Pt100,
details see table „Input ranges and detailed specification“.
Linearization DSP based linearization
Nonlinearity < 0.01 °C
Voltage
Input range ±5 mV, ±10 mV, ±20 mV, ±50 mV, ±100 mV, ±200 mV, ±500 mV, ±1 V, ±2 V, ±5 V,
freely programmable within ±5V
Accuracy ±5 mV to ±100 mV Range: 0.02 % of reading ±0.02 % of Range ±5 µV
±0.1 V to ±5V Range: 0.02 % of reading ±0.02 % of Range ±200 µV
Offset drift Typical ±0.3 µV/°K ±10 ppm of range/°K
Gain drift
Typical 15 ppm/°K
Input impedance
> 100 MΩ (power off: 50 kΩ)
Input noise
8 nV * √Hz
Resistance
Range 1, 3, 10, 30, 100, 300, 1k, 3k, 10k, 30k, 100k, 1M, freely programmable between 1 Ω and 1 MΩ
Accuracy
According to table „Input ranges and detailed specifications“.
Drift
Typical 15 ppm/°K
Constant current
From 5 µA to 5 mA, depending on range
Bridge
Range 0.5, 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000 mV/mA
Accuracy
0.02 % of reading ±0.01 % of Range ±5 µV
Offset drift
typical ±0.3 µV/°K ±10 ppm of range/°K
Gain drift
typical 15ppm/°K
Input impedance > 100 MΩ (power off : 50 kΩ)
Input noise
8 nV * √Hz
Automatic bridge balance
±200 % of range
Supported sensors
4 wire full bridge
Connector
D-SUB-9; DEWETRON bridge type pinout
Excitation current
Excitation current
1, 2, 4 mA; software programmable
Accuracy
0 to 200 µA: 0.02 % ±50 nA
200 µA to 5 mA: 0.02 % ±1 µA
Drift 15 ppm/°K
Compliance voltage 15 V
Source resistance
>150 kΩ
Bandwidth (-3dB)
3 kHz
Filters
3 Hz, 10 Hz, 30 Hz, 100 Hz, 300 Hz, 1 kHz, 3 kHz
Filter characteristics Butterworth or Bessel, 2
nd
, 4
th
, 6
th
, 8
th
order programmable
Group delay
300 µs with highest fi lter
Typ. CMRR
50 Hz
1 kHz
3 kHz
0 to 100 mV range 100 mV to 5 V range Thermocouple input
125 105 160
120 100 135
115 95 130
Isolation
1 kV
RMS
1)
Over voltage protection ±100 V between inputs (clamping voltage: 5 V @ TC input; 11 V @ Voltage input)
Output voltage ±5 V; 0 to 5V; (±10 V and 0 to 10 V with special DEWE-30)
Output resistance
22 Ω
Output current
Max. 5 mA
Output protection
Continuous short to ground
RS-485 interface Yes
RS-485 data output
Yes
Supported TEDS chips
DS2406, DS2430A, DS2431, DS2432, DS2433,DS28EC20
MSI support
No
Power supply voltage
±9 V
DC
(±5 %)
Power consumption
1 W typical
1)
Although the rated input voltage is 33 V
RMS
, 46,7 V
PEAK
or 70 V
DC
according to EN-61010-1 and EN-61010-2-30, the galvanic isolation for input, excitation and TEDS
has been tested with 1 kV
RMS
for 1 min.