851FG0006CLSAS - Ametek - Datasheet.Live

BULLETIN DB-851

PART #K796381

PRESSURE TRANSDUCERS

U.S. GAUGE

PMT PRODUCTS

U.S. GAUGE • PMT PRODUCTS 820 Pennsylvania Blvd., Feasterville, PA 19053 U.S.A. •TEL: (215) 355-6900 •FAX: (215) 355-2937 •www.ametekusg.com

EFFECTIVE: 5/99 SUPERSEDES: 5/95

Model 851 Series Pressure Transmitter

FEATURES

PMT QUALITY COMMITMENT

AMETEK’s commitment to quality in

pressure measurement technology

is unequalled in the industry. Behind

every Model 851 transmitter are 20

years of piezoresistive sensor chip and

stainless steel diaphragm/oil isolation

technology. Over these years AMETEK

has developed and perfected test

methods and quality checks to ensure

that every transmitter will operate within

specification in tough environments

for years of service. The most advanced

automated test systems in the industry

are used to characterize and final test

every transmitter.

In addition, every transmitter goes

A miniature, low-priced full-

featured transmitter—just 1 lb.

(450 grams)

All welded 316 stainless steel

construction and wetted parts

(no aluminum)

Ranges from 0-3 (0.2 bar) to

0-5000 psig (350 bar)

+0.25% accuracy

Zero and span adjustability

Full 5:1 range turndown

FM & CSA Explosion-proof and

intrinsically safe

4-20 mA output at 12-40 VDC

Water tight cable or conduit

connection optional

1/2” NPT Female process con-

nection or flush mount version

Straight in-line construction for

a slim profile

24 inch (61 cm) cable standard

MODEL 851 SERIES PRESSURE

TRANSMITTERS

through numerous quality checks

which verify secure assembly methods

all the way through the production

process. Nothing less than a 100%

quality level is accepted. With this

PMT quality commitment and our

zero-defect philosophy, the AMETEK

warranty is backed with confidence.

The heart of the Model 851 pressure

transmitter is a silicon piezoresistive

sensing chip. This miniature micro-

etched semiconductor gives a

voltage output proportional to the

applied pressure. This chip is

isolated from the process media

by a stainless steel diaphragm.

A silicone oil or other specified fill

fluid is used to transmit the process

pressure to the sensor.

A surface mount amplifier board,

enclosed in a sealed chamber, is

used to convert the millivolt signal

The Model 851 is the most durable,

accurate and cost-effective pressure

transmitter presently available. It

is designed for years of stable

performance in even the toughest

environmental and media conditions,

such as refineries, petrochemical

facilities, paper & pulp plants, and

waste water treatment facilities.

Approvals include FM and CSA for

both intrinsic safety and explosion-

proof ratings. The Model 851 also

DESCRIPTION

meets NACE standards for offshore

applications, and a one year

warranty is standard with every unit.

The small size and light weight of

the Model 851 transmitter eliminate

the need for complicated mounting

hardware and mechanical supports,

thereby reducing installation time

substantially. The in-line connection

permits simple field wiring without

the need for additional hardware,

adding to the speed and ease of

installation. Its slim profile allows for

mounting in places too tight for most

other transmitters.

A 4-20 mA output is standard with

a 12-40 VDC power supply. The

Model 851 is bench adjustable,

allowing for calibration of zero and

span. With the cover sealed double

O-ring assembly, this transmitter is

weather proof and capable of direct

spray, clean-in-place applications.

OPERATION

Model 851 Series Pressure Transmitters

from the sensor to a calibrated 4-20

mA transmitter output. Transmitter

electronics are surge protected.

Each transmitter is tested over

both pressure and temperature

ranges, and a thick film compen-

sator circuit is used to bring

the output of the sensor into

specification. After compensation,

every transmitter is tested a

second time for pressure and

temperature effects to ensure

that it meets performance

specifications.

DIMENSIONS

(MM) 2 CONDUCTOR CABLE

(PLUS GROUND)

24" STANDARD

2 CONDUCTOR CABLE

(PLUS GROUND)

24" STANDARD

2 CONDUCTOR CABLE

(PLUS GROUND)

24" STANDARD

1.25

(31.8)

6.45

(163.8)

1.25

(31.8)

7.36

(186.9)

DIA.

1/2" - 14 NPT

CONDUIT CONNECTION

(OPTIONAL)

1.25

(31.8)

6.29

(159.8)

DIA.

1/2" - 14 NPT

CONDUIT CONNECTION

(OPTIONAL)

1/2" - 14 NPT 1/2" - 14 NPT

MODEL 851

TRANSMITTER

MODEL 851

TRANSMITTER

MODEL 851

FLUSH MOUNT

TRANSMITTER

SPECIFICATIONS

FUNCTIONAL SPECIFICATIONS

SERVICE: Liquid, gas or vapor.

RANGE LIMITS:

0/3 to 0/6 psi (0/.2 to 0/.4 bar)

0/6 to 0/15 psi (0/.4 to 0/1 bar)

0/3 to 0/15 psi (0/.2 to 0/1 bar)

0/6 to 0/30 psi (0/.4 to 0/2.1 bar)

0/20 to 0/100 psi (0/1.4 to 0/6.9 bar)

0/60 to 0/300 psi (0/4 to 0/20.7 bar)

0/200 to 0/1000 psi (0/14 to 0/69.0 bar)

0/600 to 0/3000 psi (0/40 to 0/206.9 bar)

0/1000 to 0/5000 psi (0/70 to 0/344.8 bar)

OUTPUT: 4-20 mADC, limited to 30 mADC.

POWER SUPPLY: 12 to 40 VDC with

reverse polarity protection.

LOOP RESISTANCE: 1400 ohms max at 40

volts.

TURNDOWN: 5:1.

ZERO ADJUST: +10%.

SPAN ADJUST: +10%.

TEMPERATURE LIMITS:

Electronics (Ambient): -40o F to 140o F

(-40o C to 60o C)

Process Interface: -40o F to 212o F (-40o C

to 100o C)

Storage: -40o F to 212o F (-40o C to 100o C)

OVERRANGE: 300% upper range limit.

HUMIDITY LIMITS: 0-100% RH.

PERFORMANCE SPECIFICATIONS

ACCURACY: +0.25% of calibrated span

including linearity, hysteresis and

repeatability. (BFSL)

RESPONSE TIME: Time constant of 20

milliseconds.

STABILITY: +0.5% of upper range limit for

six months.

TEMPERATURE EFFECT:

(includes zero and span)

Compensated: -20o F to 180o F (-29o C

to 82o C)

Between 30o F and 130o F (-1o C and

54o C): +1% of URL per 50o F (28o C)

Between -20o F and 180o F (-29o C and

82o C): +1.6% of URL per 50o F (28o C)

POWER SUPPLY EFFECT: +0.005% Full

Scale per volt.

SURGE PROTECTION: Standard.

VIBRATION EFFECT: +0.1% of upper

range limit for 3 g to 200 Hz.

POSITION EFFECT: Zero shifts up to

0.01 psi.

OVERRANGE EFFECTS: +0.15% Full

Scale per 200% of maximum range.

PHYSICAL SPECIFICATIONS

MATERIALS OF CONSTRUCTION:

Process Wetted Parts: 316 Stainless

Steel

Diaphragm (Models 851F): Hastelloy “C”

Non Wetted Parts: 316 Stainless Steel;

VITON “O” Ring

Fill Fluid: DC 200 Silicone (Standard)

Process Connection: Reference Model

Code

Electrical Connection: Reference Model

Code

Weight: 1 lb. (450 grams)

Cable Length: 24 inches (61 cm), 22 AWG

CLASSIFICATIONS

FACTORY MUTUAL:

Intrinsically safe for Class I, II, III Division

I, Groups A, B, C, D, E, F, G for

hazardous locations per AMETEK Dwg.

BK750407.

Entity Requirement: Imax = 225mA, Vmax

= 36V, Ci = 0.126 µf., Li = 0 mH

Explosion Proof for Class I, II, III Division

1, Groups C, D,E, G, for hazardous

locations. NEMA 4 Enclosure. Conduit

seal must be within 18” of transmitter.

CANADIAN STANDARDS ASSOCIATION:

Exia-Intrinsically safe for Class I, Division

1 & 2, Groups A, B, C, D; Class II,

Groups E, F, G when connected per

AMETEK Dwg. BK750483.

Explosion Proof for Class I, Division 1,

Groups B, C, D; Class II, Groups E, F, G;

Class III for Hazardous locations.

Enclosure 4, Temperature Code T3C

(160o C)

CALIBRATION

MODCAL II CALIBRATION SYSTEM*

NEGATIVE

TURNDOWN

(COURSE)

ADJUSTMENT

SPAN

ADJUSTMENT

GROUND

POSITIVE

ZERO (FINE)

ADJUSTMENT

*Contact factory for information on calibration system.

2.5M699 (110048)

U.S. GAUGE • PMT PRODUCTS

820 PENNSYLVANIA BLVD., FEASTERVILLE, PENNSYLVANIA 19053 U.S.A.

TEL: (215) 355-6900 • FAX: (215) 355-2937 •www.ametekusg.com

Model 851 Series Pressure Transmitters

ORDERING INFORMATION

MODEL NUMBER

851-T-G-0015-C-L-S-A-S-(0-15 PSI)

MODEL 851 ELECTRONIC PRESSURE TRANSMITTER

PROCESS CONNECTION

T = 1/2” NPT

F = FLUSH1

PRESSURE TYPE

G = GAUGE

PRESSURE RANGE

3015 = 3-15 PSI (.2 to 1 bar)

0006 = 0/3 To 0/6 PSI (0/0.2 to 0/0.4 bar)

0015 = 0/6 To 0/15 PSI (0/0.4 to 0/1 bar)

0030 = 0/6 To 0/30 PSI (0/0.4 to 0/2.1 bar)

0100 = 0/20 To 0/100 PSI (0/1.4 to 0/6.9 bar)

0300 = 0/60 To 0/300 PSI (0/4 to 0/20.7 bar)

1000 = 0/200 To 0/1000 PSI (0/14 to 069.0 bar)

3000 = 0/600 To 0/3000 PSI (0/40 to 206.9 bar)

5000 = 0/1000 To 0/5000 PSI (0/70 to 0/344.8 bar)

ELECTRICAL CONNECTION

N = STANDARD NUT/CABLE3*

C = 1/2" NPT FEMALE CONDUIT CONNECTION/CABLE*

DIAPHRAGM

L = 316L STAINLESS STEEL

H = HASTELLOY

FILL

S = SILICONE

AGENCY APPROVAL

A = FACTORY MUTUAL (FM) AND CANADIAN STANDARD

ASSOC. (CSA) IS & EXP. PROOF2

C = FACTORY MUTUAL (FM) AND CANADIAN STANDARD

ASSOC. (CSA) IS1

COUPLING (FLUSH ONLY)

S = 316 SS COUPLING; TEFLON GASKET

P = 316 SS PLUG, COUPLING; TEFLON GASKET

N = NO COUPLING; TEFLON GASKET

CALIBRATED RANGE

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

1. Flush Connection only available up to 300 PSI (20 bar).

2. Explosion Proof Approval requires “C” electrical connection option.

3. Not available with agency approval “A”, FM/CSA explosion-proof.

*Cable length is 24” (22 AWG) standard.

TYPICAL WIRING

DIAGRAM

NEGATIVE

TURNDOWN

(COURSE)

ADJUSTMENT

SPAN

ADJUSTMENT

GROUND

POSITIVE

ZERO (FINE)

ADJUSTMENT

1/2" NPT CONDUIT

SHIELD/DRAIN

(BLACK) (RED)

(GREEN)

RECEIVER/CONTROLLER POWER SUPPLY

Example:

851-T-G-0015-C-L-S-A-S (0-15 PSI)

1/2" NPT Connection, Pressure Type Gauge, 0/6 To 0/15 PSI

(0/0.4 to 0/1 bar), Female Conduit Connection/Cable, 316L

Stainless Steel, Silicone Fill, Factory Mutual (FM) and Canadian

Standard Assoc. (CSA) IS & Exp. Proof, 316 Stainless Steel

Coupling and Teflon Gasket, 0-15 PSI Calibrated Range