58
10 Supplement
WIKA Operating Instructions - Process pressure transmitter CPT-2x
Max. permissible Turn Down
Unlimited (recommended 20 : 1)
Switch-on phase
Start-up time with operating voltage U
B
Ʋ ≥ 12 V DC
≤ 9 s
Ʋ
< 12 V DC
≤ 22 s
Output variable
Output signal
digital output signal, Foundation Fieldbus protocol
Transmission rate
31.25 Kbit/s
Damping (63 % of the input variable)
0 … 999 s, adjustable
Channel Numbers
Ʋ
Channel 1
Process value
Ʋ
Channel 8
Electronics temperature
Current value
Ʋ
Non-Ex, Ex-ia and Ex-d instruments
12 mA, ±0.5 mA
Dynamic behaviour output
Dynamic characteristics depending on medium and temperature
90 %
100 %
10 %
t
t
T
A
t
t
S
2
1
Fig. 38: Behaviour in case of sudden change of the process variable. t
T
: dead time; t
A
: rise time; t
S
: jump response
time
1 Process variable
2 Output signal
CPT-2x
CPT-2x - IP68 (25 bar)
Dead time
≤ 25 ms
≤ 50 ms
Rise time (10 … 90 %)
≤ 55 ms
≤ 150 ms
Step response time (ti: 0 s, 10 … 90 %)
≤ 80 ms
≤ 200 ms
Damping (63 % of the input variable)
0 … 999 s, adjustable via menu item "
Damping
"
