Installation and Maintenance Instructions

COMMON SPECIFICATIONS FOR ALL UNIITS:

Calibration Reference Conditions:

Ambient Temperature: -40 TO 176°F (-40 to 80°C)

Relative Humidity: 40 to 60%

Barometric Pressure: 29.92 in. Hg.

Performance Characteristics:

Accuracy (L,H&R): ± 0.25% FSO at 75°F (BFSL of L/H/R effects at 75°F)

±0.1% FSO at 75°F (Optional)

±0.5% for Vacuum only [-23] typical

Long Term Stability: Will repeat within ± 0.2% FSO of original

calibration curve for 3 year

Proof Pressure: 2X range for up to 7500 psi models;

1.5X range for 7500 – 30000 psi models.

Vibration: 2000 Hz at 15 g’s peak, MIL-STD 202,

METHOD 204, COND. B

Shock: 50 g’s, 11 ms, MIL-STD 202, METHOD 213, Cond. G.

Wetted Material: 316L Stainless Steel (up to 10k psi)

17-4 PH Stainless Steel (>15k psi)

Pressure Cavity Volume: 0.08 inches³ maximum approx.

CALIBRATION:

All models are tested to meet or exceed the published specifications. The

calibration and testing were done using instrumentation and standards traceable

to the National Institute of Standards and Technology (NIST). Also tested in

accordance with MIL-STD-45662A.

Approvals:

North America:

UL and c-UL Listed Pressure Transmitter

For use in Hazardous Locations

Class I, Div. I, Groups A, B, C & D

Class II, Div. I, Groups E, F & G.

450X Series

Barksdale Intelligent Transmitter

Model Series: H455X(4 – 20 mA), 455X (4-20mA) & 452X (1-5 VDC):

Excitation Voltage: 9 to 30 VDC Or 11/14-30 VDC

Analog Output: 4 to 20 mA (H455X & 455X)

1 – 5 VDC (452X)

Zero Balance: ±1% FSO at 75°F (24°C)

Protection: Reverse polarity protected

Loop Resistance: See loop resistance chart on back page

Temperature Range: Compensated: 0 to +165°F (-18 to +74°C)

Operating: -40 to +176°F (-40 to +80°C)

Media: -40 to +176°F (-40 to +80°C)

Temperature Error: ±1% per 100°F

Weight: 16 Oz (453 grams)

Wiring: Red = +Excitation

Black = -Excitation

Green (Drain) = Case/Earth Ground

White = Voltage Output only

Span Adjustment (Turn Down): 10:1 (With HART option only)

Span Accuracy: ±1% FS AT 75°F (24°C).

Consult Sales Drawing & EN/IEC 61000-4 for appropriate

Electromagnetic Compatibility (EMC) requirements.

II 2 G D

Ex db IIC T5 Gb

Ex tb IIIC T81°C Db IP66 & IP67

-40°C < Tamb < +80°C

DEMKO 18 ATEX 2084

IECEx UL 18.0090

For Canadian installations, a second conduit seal is not required for all pressure ranges up to 10,000 PSI which are Single Seal compliant to ANSI / ISA 12.27.01 –

2011 Standard. Other higher pressure range models require an appropriate Ex Type Flameproof (“d” protection) approved conduit seal and/or stopping box

with minimum temperature rating of -40° to +80 °C. All system design considerations and installation guidelines must be in accordance with the national and

local electrical safety codes per CEC 22.1 / NFPA 70 Standards.

R N I N G ! READ BEFORE INSTALLATION

Fluid hammer and surges can destroy any pressure transmitter 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 transmitters having a pressure range 500 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 c o ntin u e monitoring pressures.

2. Pressure transmitter output remains constant regardless of pressure.

3. In severe cases, there will be no output.

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 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.

CAUTION: For steam service, install a condensate loop (pigtail or steam siphon tube) between the steam line and the pressure transmitter.

Barksdale, Inc. 3211 Fruitland Avenue, Los Angeles, CA 90058-0843 (323) 589-6181, www.barksdale.com Bulletin No. 272439B 11

-01-2018

E146589

0081

Code Code Thread type

BLANK 1/4" NPT, Male - P11 G 1/2, Washer seal, Male

- P6 1/4” NPT, Female - P13 G 1/2, Washer seal, Female

- P4 1/2" NPT, Male - P3 7/16-20, with 37° Flared, Male

- P5 1/2” NPT, Female - P1 7/16-20, with 37° Flared, Female

- P10 G 1/4, washer seal, Male - P2 7/16-20, SAE #4, ORB, Male

- P12 G 1/4, Washer seal, Female - P14 7/16-20, SAE #4, ORB, Female

- P15

TYPE OF THREADS FOR PROCESS CONNECTIONS

HF4 Autoclave, 1/4” Tube, Female (9/16-18 UNF-28 THD)

Thread type

TYPE 4X