K-Patents PR-21-S - Manual (Page 91)

9 Indicating transmitter DTR specifications 85
9.4 Specifications
9.4.1 Indicating transmitter specifications
Display: 320x240 pixel graphical LCD with LED
backlight
Keypad: 18 membrane keys
Current output: Two independent current sources, 4-20 mA,
max. load 1000 Ohm, galvanic isolation
1500 VDC or AC (peak), hold function during
prism wash
Power: AC input 100-240 VAC
±10%,
50/60 Hz,30 VA, optional 24 VDC;
Overvoltage Category II, Pollution Degree 2
(DTR), Pollution Degree 3 (sensor)
Alarms/Wash relays: Two built-in signal relays, max. 250 V/3 A
Input switches: Four switch inputs.
Current outputs: Two current outputs configurable
independently to indicate process
concentration or temperature of either
sensor.
Sensor connectivity, DTR: One or two sensors can be connected to the
transmitter. Sensors independent of each
other: own parameter sets and usable in
different applications.
Sensor connectivity, STR: Only one sensor can be connected to the
transmitter.
Used with the Intrinsically safe sensor
PR-21-S-...-IA.
Transmitter protection class: Enclosure IP66, Nema 4X
Installation: Indoor/outdoor, relative humidity 80% max
Indicating transmitter weight: 4.5 kg (10 lbs)
9.4.2 Interconnecting cable specifications
Cable: IEC 61158-2 compliant two-wire cable:
two signal wires and shield
copper area 0.8 mm
2
(18 AWG)
cable resistance 24 Ohm/km (per wire)
cable attenuation 3.0 dB/km @ 28 kHz
Cable length: Standard 10 m (33 ft), max. total length
200 m (660 ft)