Endress+Hauser Ceraphant PTP31B - Output

Technical data Ceraphant PTP31B, PTP33B
70 Endress+Hauser
15.2 Output
15.2.1 Output signal
Description Option
1)
PNP switch output + 4 to 20 mA output (4-wire) 3
PNP switch output (3-wire) 4
2 x PNP switch output (4-wire) 5
1) Product Configurator, order code for "Output"
15.2.2 Range of adjustment
• Switch output
Switch point (SP): 0.5 to 100 % in increments of 0.1% (min. 1 mbar * (0.015 psi)) of the
upper range limit (URL) switchback point (RSP): 0 to 99.5% in increments of 0.1% (min.
1 mbar * (0.015 psi)) of the upper range limit (URL)
Minimum distance between SP and RSP: 0.5 % URL
• Analog output (if available)
Lower range value (LRV) and upper range value (URV) can be set anywhere within the
sensor range (LRL - URL). Turn down for analog output up to 5:1 of upper sensor limit
(URL).
• Factory setting (if no customer-specific setting is ordered):
Switch point SP1: 45 %; switch-back point RSP1: 44.5 %;
Switch point SP2: 55 %; switch-back point RSP2: 54.5 %;
Analog output: LRV 0 %; URV 100 %
* For measuring ranges with a negative gauge pressure up to 4 bar (60 psi), the increment
when setting the switch point is min. 10 mbar (0.15 psi)
15.2.3 Relay switching capacity
• Switch state ON: I
a
≤ 250 mA; switch state OFF: I
a
≤1 mA
• Switch cycles: >10,000,000
• Voltage drop PNP: ≤2 V
• Overload protection: Automatic load testing of switching current;
– Max. capacitance load: 14 μF at max. supply voltage (without resistive load)
– Max. cycle duration: 0.5 s; min. t
on
: 4 ms
– Periodic disconnection from protective circuit in the event of overcurrent (f = 2 Hz) and
"F804" display
15.2.4 Signal range 4 to 20 mA
3.8 mA to 20.5 mA
15.2.5 Load (for devices with analog output)
The maximum load resistance depends on the terminal voltage and is calculated according
to the following formula: