Specifications - Brainchild VR18 User Manual

1.8 Specifications

Power
90-250VAC, 47-63Hz, 60VA, 30W maximum
11-18VDC or 18-36 VDC, 60VA, 30W maximum
Display
6.5〞TFT LCD, 640X480 pixel resolution, 256 colors
Memory
16MB storage memory on board
Storage media: 2GB CF (Compact Flash) cards
Analog Input Cards (AI181, AI182, AI183)
Channels: AI181 ~ 1 channel, AI182 ~ 2 channels, AI183 ~ 3 channels
Resolution: 18 bits
Sampling Rate: 5 times/ second
Maximum Rating: -2 VDC minimum, 12 VDC maximum (1 minute for mA input)
Temperature Effect: ±1.5 µV/ ˚C for all inputs except mA
Sensor Lead Resistance Effect:
T/C: 0.2 µV/ohm 3-wire RTD: 2.6 ˚C /ohm of resistance difference of two leads
2-wire RTD: 2.6 ˚C /ohm of resistance sum of two leads
Burn-out Current: 200nA
Common Mode Rejection Ratio (CMRR): 120dB
Normal Mode Rejection Ratio (NMRR): 55dB
Isolation Breakdown Voltage between channels: 430VAC min.
Sensor Break Detection: Sensor opened for TC, RTD and mV inputs, below 1 mA for 4-20mA input,
below 0.25V for 1-5V inputs, unavailable for other inputs
Sensor Break Responding Time: Within 10 seconds for TC, RTD and mV inputs, 0.1 second for 4-20 mA
and 1-5V inputs
Characteristics:
Type
J -120 ~ 1000 ˚C
(-184 ~ 1832 ˚F)
K -200 ~ 1370 ˚C
(-328 ~ 2498 ˚F)
T -250 ~ 400˚˚C
(-418 ~ 752˚F)
E -100 ~ 900 ˚C
(-148 ~ 1652 ˚F)
B 0 ~ 1820 ˚C
(32 ~ 3308 ˚F)
R 0 ~ 1768 ˚C
(32 ~ 3214 ˚F)
S 0 ~ 1768 ˚C
(32 ~ 3214 ˚F)
N -250 ~ 1300 ˚C
(-418 ~ 2372 ˚F)
L -200 ~ 900 ˚C
±3.0 µV/ ˚C for mA input
Range Accuracy
at 25 ˚C
±1 ˚C
±1 ˚C ˚
±1 ˚C
±1 ˚C
±2 ˚C
(200 ~ 1820 ˚C)
±2 ˚C
±2 ˚C
±1 ˚C
±1 ˚C
11
Input
Impedance
2.2MΩ
2.2MΩ
2.2MΩ
2.2MΩ
2.2MΩ
2.2MΩ
2.2MΩ
2.2MΩ
2.2MΩ