Cooper Instruments & Systems PTT 242 Gage/Absolute Pressure Transmitter - 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 -40 to 225 °F
Reverse Circuit protected Yes
3.90" (50-1500 PSI)
3.15" (2K - 10K PSI)
1.50"
DIA.
1/4-18 NPT FEMALE
PRESSURE PORT w/1" HEX
(ADAPTERS USED FOR
MALE FITTINGS)
REMOVABLE SCREWS TO
ACCESS ZERO & SPAN
ADJUSTMENTS INSIDE CASE
or EQUIVALENT
CONN. GASKET
DIN 43650/GSA 200-4
or EQUIVALENT
ELECTRICAL CONNECTOR
DIN 43650/GSA 300N
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.
Typical Wiring to Supply & Readout
+
-
READOUT
SUPPLY
+
-
+SUPPLY
+OUTPUT
SHUNT CAL 1
SHUNT CAL 2
3 8 13 18 23 28 38 33 40
0
500
1000
1500
SUPPLY VOLTAGE
MAXIMUM
LOOP
RESISTANCE
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
OUTPUT with shunt cal applied = SHUNT CAL OUTPUT + ZERO OUTPUT
ZERO OUTPUT = OUTPUT with zero pressure or load applied.
GROUNDING:
System is usually tied to Earth ground at the Power Supply Return.
PTT242 9/22/00 CF49