Barksdale Series 436 - Manual

Installation And Maintenance Instructions
BARKSDALE, INC., 3211 Fruitland Avenue, Los Angeles, CA 90058-0843 (323) 589-6181 Bulletin No. 272140-B 05-29-01
NONINCENDIVE PRESSURE TRANSMITTER
W A R N I N G ! W A R N I N G ! W A R N I N G ! W A R N I N G ! W A R N I N G ! READ BEFORE INSTALLATION READ BEFORE INSTALLATION READ BEFORE INSTALLATION READ BEFORE INSTALLATION READ BEFORE INSTALLATION
Fluid hammer and surges can destroy any pressure transducer and must always be avoided. A pressure snubber should be installed to eliminate the
damaging hammer effects. Fluid hammer occurs when a liquid flow is suddenly stopped, as with quick closing solenoid valves. Surges occur when flow
is suddenly begun, as when a pump is turned on at full power or a valve is quickly opened.
Barksdale pressure transmitter having a pressure range 2,000 psi and higher have a built in pressure surge protection in the input port. The design
is such that an orifice is made an integral part of the pressure port. Designed with the upstream side of the orifice as a sharp corner, it acts as a
very effective protection. Other orifice devices can be installed upstream of the pressure transmitter in the piping system for extra protection where
the system engineer requires it.
Liquid surges are particularly damaging to pressure transmitters if the pipe is originally empty. To avoid damaging surges, fluid lines should remain
full (if possible), pumps should be brought up to power slowly, and valves opened slowly. To avoid damage from both fluid hammer and surges, a
surge chamber should be installed, and a pressure snubber should be installed on every transmitter.
Symptoms of fluid hammer and surge’s damaging effects:
1. Pressure transmitter exhibits an output at zero pressure (large zero offset). If zero offset is less than 10% FS, user can
usually re-zero meter, install proper snubber and continue monitoring pressures.
2. Pressure transmitter output remains constant regardless of pressure.
3. In severe cases, there will be no output.
TORQUE REQUIREMENTS: TORQUE REQUIREMENTS: TORQUE REQUIREMENTS: TORQUE REQUIREMENTS: TORQUE REQUIREMENTS:
Apply pipe compound sparingly to male pipe threads only. Avoid pipe strain on Transmitter housing by properly supporting and aligning piping.
Apply wrench to the hex flats of fittings only, then tighten the connection. Adequate support of piping and proper mounting of the pressure
transmitter should be made to avoid excessive shock and vibration.
TORQUE TO 125 - 150 pound inches.
CALIBRATION CALIBRATION CALIBRATION CALIBRATION CALIBRATION
All models are tested to meet or exceed the published speci-
fications. The calibration and testing were done using instru-
mentation and standards traceable to the National Institute of
Standards and Technology (NIST). Also tested in accordance
with MIL-STD-45662A.
Excitation: 12 to 28 VDC
Output: 4 to 20 mA
Zero Output: 4 mA, ± 2.0% of FSO @ 75°F
Full Scale Output: 20 mA, ± 1.0% @ 75°F
Protection: Reverse polarity protected
Loop Resistance: See loop resistance chart on back
Temperature Range: Compensated: -40
o to +160 o F(-40 o to 71 oC C)
Operating: -40 o to 185 o F (-40 o to 85 o C)
Agency Temp.Code: T4
Temperature Error: ±0.01% of FSO/°F over the compensated
range.
Weight: 5.9 oz (167.5 grams)
Wiring: H3, H5 Cable T4, T5 Pins
Red (+Excite) Pin1
Black (Common) Pin2
Drain (Case Ground) Pin4
H6 - SJO Cord Wire Code:
White (+Excite)
Black (Common)
Green (Case Ground)
Calibration Reference Conditions
Ambient Temperature:
75 o F
Relative Humidity: 40 to 60%
Barometric Pressure: 29.92 in. Hg.
Performance Characteristics
Accuracy (LH&R): ±0.25%, Best Straight Line
(BSL)@75°F
Long Term Stability: Will repeat within ±0.25% FSO
of original calibration curve for
1 year
Proof Pressure:
2 times rated pressure range,
or 13,000 psi, whichever is less
Life, Cycling: Full scale pressure cycles:
10 8 to 300 psi, 10 7 to 1,000 psi,
10 6 to 7,500 psi
Vibration: 15 g's, 10 to 2000 Hz
(MIL-STD-202, M204, Cond. B)
Shock: 50 g's, 11 ms (MIL-STD-202,
M213, Cond. G)
Wetted Material: 300 series and 17- 4 PH stainless
steel.
Electrical Connection: 1 meter jacketed cable, standard
See alternate connections on back
Pressure Cavity Volume: 0.075 inches maximum
Enclosure Rating:
NEMA 4X
"!#5-41-5
Agency Approval
435-H5(-E), -H6 (-E) Models
Telemetering Equipment for Use in Hazardous Locations
UL File No. E146589, Guide No. WYMV, WYMV7.
DIV. 2 HAZARDOUS LOCATIONS
CAUTION: This device should only be installed by properly trained service personnel.
Specifications:
Nonincendive Pressure Transmitter for Use in Hazardous Locations
Class I, Div.2, Groups A, B, C & D, Class II, Div.2, Groups F & G
435-H3(-E), T4 (-E), T5 (-E) Models
Telemetering Equipment for Use in Hazardous Locations-
Component
UL File No. E146589, Guide No. WYMV2, WYMV8.