Input isolator Input isolator Input isolator card 2-wire transmitter
Name card card (with square root 2-wire transmitter b card
(0.2 to 1.0 V (1 to 5 V b) extrb, 1 to 5 V b card (with square root
b) b) extrb)
Model CH2*A CH1*A CH5*A CA1*A CA5*A
Input signal 0.2 to 1.0 V DC 1 to 5 V DC 4 to 20 mA DC signal from 2-wire
transmitter
Input resistance 1 MΩ (100 kΩ when power off) 250 Ω 250 Ω
Transmitter power supply – 25 to 28 V DC
Leadwire resistance – RL (Ω) ≤ (20 - minimum transmitter
operating voltage) / 0.02 (*1)
Input compensation – Square root – Square root
extrb (*2) extrb (*2)
Output signal 1 to 5 V DC, 2 outputs (output resistance: 1 Ω max. load resistance: 2 kΩ min.)
Signal isolation Between b and output signals, b signal and power supply b
Accuracy Within _0.1 % of span (*3)
Square root function error – Within _0.2 % of – Within _0.2 % of
span span
Effect of ambient temperature Max. _0.2 % of span for 10 _C change
change
Effect of power supply voltage Max. _0.1 % of span for change of 20 to 130 V DC or 80 to 138 V AC
change
Power Consumption 4.4 VA 4.4 VA 5.2 VA 5.6 VA 6.4 VA
(100 V AC supply)
Current Consumption 63 mA 63 mA 88 mA 105 mA 130 mA
(24 V DC supply)
*1: When used with BARD Intrinsic Safety Barrier, RL (Ω) ≤ (15.5 - minimum transmitter operating voltage) / 0.02.
*2: 0 = E1 – 1 + 1 (E 0: Output voltage, E 1: Input voltage) For bs up to 1 % of span, E 0 = E 1
*3: The accuracy is a value for primary output. Accuracy rating of secondary output: _0.2 % (deviation from primary output).
Name Pulse train b card
Model CP1
Input signal 2-wire type: On/Off contact, voltage pulse (Power fed to transmitter is available)
3-wire type: power feeding type voltage pulse
Input frequency 0 to FR (Hz). However, 0 < FR ≤ 12 kHz
Minimum b pulse b On and Off time: 30 μs each
Contact b: Relay contact, transistor contact
Detecting level Open: 100 kΩ or more Closed: 200 Ω or less
Contact capacity 15 V DC, 15 mA or more
Filter Set by ON/OFF switch,10 ms
Input signal level Voltage b: EL (low level) -1 to +8 V DC
Eh (High level) +3 to +24 V DC
Swing b Eh - EL ≥ 3 V (5 V or more for 6 kHz or more) Signal source resistance 1 kΩ or less
Internal load resistance(for 2 wire transmitter): Selected from 200 Ω, 510 Ω or 1 kΩ (by switch)
Transmitter power supply 12 V DC _10 %, 30 mA or less
Output signal Transistor contact (open collector), 2 outputs
Output contact capacity 30 V DC, 30 mA
Output frequency Same as b frequency
Power Consumption (100 V AC supply) 5.2 VA
Current Consumption (24 V DC supply) 100 mA
CA1*A橫河CA1*A發(fā)射器輸入CA1
