Cooper PTT 242 User Manual

AMPLIFIED TRANSDUCER APPLICATION SHEET FOR PTT 242
Output Range 4-20 mA 2-WIRE
Operating Voltage Range 13-40 volts DC
Operating current max 28 mA (OVERRANGE)
Operating Temperature Range
Reverse Circuit protected Yes
Procedure for adjusting Span & Zero Potentiometers:
1. Loosen screws on rear of unit.
2.Remove connector cover to expose trim pots.
3.Adjust ZERO &SPAN using SHUNT CAL or a pressure standard.
4.Replace cover, making sure not to pinch any wires.
5.Re-insert the 2 screws on the rear of the unit and align with mounting Holes. CAUTION!!!! Do not over tighten screws as this may result in permanent damage to the unit.
MAXIMUM
LOOP
RESISTANCE
SHUNT CALIBRATION: (Not available on all Transducers) To Enable the Shunt Calibration – Short together the SHUNT CAL 1 and SHUNT CAL 2 Terminals or wires. CALIBRATION: Using the data from the CERTIFICATION OF CALIBRATION:
Full scale OUTPUT = CALIBRATION FACTOR + ZERO OUTPUT
ZERO OUTPUT = OUTPUT with zero pressure or load applied.
GROUNDING: System is usually tied to Earth ground at the Power Supply Return.
Maximum Loop Resistance
1500
1000
500
0
3 8 13 18 23 28 3833 40
SUPPLY VOLTAGE
OUTPUT with shunt cal applied = SHUNT CAL OUTPUT + ZERO OUTPUT
1.50" DIA.
1/4-18 NPT FEMALE PRESSURE PORT w/1" HEX (ADAPTERS USED FOR MALE FITTINGS)
3.90" (50-1500 PSI)
3.15" (2K - 10K PSI)
DIN 43650/GSA 200-4
CONN. GASKET
or EQUIVALENT
ELECTRICAL CONNECTOR DIN 43650/GSA 300N or EQUIVALENT
Typical Wiring to Supply & Readout
+SUPPLY
+OUTPUT
SHUNT CAL 1
SHUNT CAL 2
REMOVABLE SCREWS TO ACCESS ZERO & SPAN ADJUSTMENTS INSIDE CASE
+
SUPPLY
-
+
READOUT
-
PTT242 9/22/00 CF49
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