Honeywell STD725, STD735, STD775 Technical Information

SmartLine

Technical Information

STD700 SmartLine Differential Pressure
Specification 34-ST-03-121, Jan 2021

Introduction

Part of the SmartLine® family of products, the STD700
models are suitable for monitoring, control and data
acquisition featuring piezoresistive sensor technology.
By combining pressure sensing with on chip temperature
compensation capabilities STD700 offers high accuracy,
stability and performance over a wide range of application
pressures and temperatures. The SmartLine family is also
fully tested and compliant with Experion® PKS providing the
highest level of compatibility assurance and integration
capabilities. SmartLine easily meets the most demanding
application needs for pressure measurement applications.

Best in Class Features:

o Accuracies up to 0.05% of span
o Stability up to 0.020% of URL per year for 10 years
o Automatic static pressure & temperature compensation
o Rangeability up to 100:1
o Response times as fast as 100ms
o Easy to use and intuitive display capabilities
o Intuitive External Zero, Span and configuration

capability

o Comprehensive on-board diagnostic capabilities
o Integral Dual Seal design for highest safety based

on ANSI/NFPA 70-202 and ANSI/ISA 12.27.0

o World class overpressure protection
o Full compliance to SIL 2/3 requirements.
o Modular design characteristics
o Available with additional 4-year warranty

Communications/Output Options:

o HART ® (version 7.0)

Figure 1 – STD725/735/775 Differential Pressure
Transmitters feature field-proven piezoresistive

sensor technology

Span & Range Limits:

Model

URL

inH2O

(mbar)

LRL

inH2O

(mbar)

Min Span

inH2O

(mbar)

STD725

400 (1000)

-400 (1000)

4 (10)

Model

psi (bar)

psi (bar)

psi (bar)

STD735

100 (7.0)

-100 (-7.0)

1 (0.07)

STD775

3000 (210)

-100 (-7.0)

30 (2.1)

2 STD700 Smart Pressure Transmitter

Description

The SmartLine family pressure transmitters are designed
around a high performance piezo-resistive sensor. This one
sensor actually integrates multiple sensors linking process
pressure measurement with on-board static pressure (DP
Models) and temperature compensation measurements.

Indication/Display Option

Standard LCD Display Features

o Modular (may be added or removed in the field)
o Supports HART protocol variant
o 0, 90,180, & 270 degree position adjustments

o Configurable (HART only) and standard (Pa, KPa,

MPa, KGcm2, Torr, ATM, inH2O, mH2O, bar, mbar,
inHG, FTH2O, mmH2O, mm HG, & psi) measurement
units.

o Supports Flow engineering units
o 2 Lines 6 digits PV (9.95H x 4.20W mm) 8 Characters
o Square root output indication (√)
o Write protect Indication
o Built in Basic Device Configuration through Internal or

External Buttons – Range/Engineering Unit/Loop Test
/Loop Calibration/Zero /Span Setting

o Multiple language capability (EN, RU)

Diagnostics

SmartLine transmitters all offer digitally accessible
diagnostics which aid in providing advanced warning of
possible failure events minimizing unplanned shutdowns,
providing lower overall operational costs

System Integration

o SmartLine communications protocols all meet the most

current published standards for HART.

o All ST 700 units are Experion tested to provide the

highest level of compatibility assurance

Configuration Tools

External Two Button Configuration Option

Suitable for all electrical and environmental requirements,
SmartLine offers the ability to configure the transmitter and
display, for all basic parameters, via two externally
accessible buttons when a display option is
selected. Zero/span capabilities are also optionally available
via two external buttons with or without selection of the
display option.

Internal Two Button Configuration Option

The Standard display has two buttons that can be used for
Basic configuration such as re ranging, PV Engineering unit
setting, Zero/Span settings, Loop testing and calibration
functions.

Hand Held Configuration

SmartLine transmitters feature two-way communication and
configuration capability between the operator and the
transmitter. All Honeywell transmitters are designed and
tested for compliance with the offered communication
protocols and are designed to operate with any Standards
compliant handheld configuration device.

Modular Design

To help contain maintenance & inventory costs, all ST 700

transmitters are modular in design supporting the user’s

ability to replace meter bodies, standard displays or
electronic modules without affecting overall performance.
Each meter body is uniquely characterized to provide in­tolerance performance over a wide range of application
variations in temperature and pressure.

Modular Features

 Meter body replacement
 Add or remove standard displays
 Add or remove lightning protection (terminal

connection)

With no performance effects, Honeywell’s unique modularity

results in lower inventory needs and lower overall operating
costs.

STD700 Smart Pressure Transmitter 3

Performance Specifications

Reference Accuracy (conformance to +/-3 Sigma)

Table 1

Model

URL

LRL

Min Span

Maximum

Turndown

Ratio

Stability
(% URL/Year
for 10 years)

Reference

Accuracy

1,2

(% Span)
Standard

STD725

400 in H2O (1000 mbar)

-400 in H2O (-1000 mbar)

4 in H2O (10 mbar)

100:1

0.020

0.05

STD735

100 psi (7.0 bar)

-100 psi (-7.0 bar)

1 psi (0.07 bar)

100:1

0.020

STD775

3000 psi (210 bar)

-100 psi (-7.0 bar)

30 psi (2.1bar)

100:1

0.020

Zero and span may be set anywhere within the listed (URL/LRL) range limits

Accuracy, Temperature and Static Pressure Effects:

(Conformance to +/-3)

Table 2

Accuracy

1,2

(% of Span)

Combined Zero &

Span temperature

Effect

(% Span / 28oC

(50oF))

Combined Zero &

Span Static Line

Pressure Effect

(% Span / 1000psi)

Model

URL

Reference
Turndown

A

B

C

(see URL

units)

D

E

F

G

Standard

Accuracy

STD725

400 in H2O

(1000 mbar)

16:1

0.005

0.045
25 (62,5)

0.050

0.025

0.100

0.020

STD735

100 psi (7.0 bar)

4:1

25 (1.75)

0.070

0.015

0.100

0.020

STD775

3000 psi (210 bar)

10:1

300 (21)

0.070

0.015

0.100

0.020

Turn Down Effect

Temp Effect

Static Effect

Total Performance (% of Span):

Total Performance = +/- √(Accuracy)

2

+ (Temp Effect)2+ (Static Line Pressure Effect)2

Total Performance Examples: (standard accuracy, 5:1 Turndown, up to 50 oF shift & up to 1000 psi Static

Pressure)
STD725 @ 80 inH2O: 0.270% of span
STD735 @ 20 psi: 0.255 % of span
STD775 @ 600 psi: 0.252 % of span

Typical Calibration Frequency:

Calibration verification is recommended every two (2) years

Notes:

1. Terminal Based Accuracy – Includes combined effects of linearity, hysteresis and repeatability. Analog output adds 0.006% of span

2. For zero based spans and reference conditions of: 25oC (77oF), 0 psig static pressure, 10 to 55% RH and 316SS barrier diaphragm.

4 STD700 Smart Pressure Transmitter

Operating Conditions – All Models

Parameter

Reference

Condition

Rated Condition

Operative Limits

Transportation and

Storage

C

F

C

F

C

F

C

F

Ambient Temperature1

25±1

77±2

-40 to 85

-40 to 185

-40 to 85

-40 to 185

-55 to 120

-67 to 248

Meter Body Temperature

25±1

77±2

-40 to 110

-40 to 230

-40 to 125

-40 to 257

-55 to 120

-67 to 248

Humidity %RH

10 to 55

0 to 100

0 to 100

0 to 100

Vac. Region – Min. Pressure
mmHg absolute

inH2O absolute

Atmospheric
Atmospheric

25
13

2 (short term ) 2
1 (short term ) 2

Supply Voltage
Load Resistance

10.8 to 42.4 Vdc at terminals (IS versions limited to 30 Vdc)

0 to 1,440 ohms (as shown in Figure 2)

Maximum Allowable
Working Pressure (MAWP)

3,4

(ST 700 products are rated to
Maximum Allowable Working

Pressure. MAWP depends on

Approval Agency and

transmitter materials of

construction.)

4,500 psi (310 bar)

1

LCD Display operating temperature -20C to +70C Storage temperature -30C to 80C.

2

Short term equals 2 hours at 70C (158F)

3

MAWP applies for temperatures -40 to 125C. Static Pressure Limit is de-rated to 3,000 psi for -26C to -40C. for all models. Use of

graphite o-rings de-rates transmitter to 3,625 psi. Use of 1/2:” process adaptors with graphite o-rings de-rates transmitter to 3,000 psi.

4

Consult factory for MAWP of ST 700 transmitters with CRN approval.

5

Silicone minimum temperature rating is -40C (-40F). CTFE minimum temperature rating is -30C (-22F).

Figure 2 - Supply voltage and loop resistance chart & calculations

STD700 Smart Pressure Transmitter 5

Performance Under Rated Conditions – All Models

Parameter

Description

Analog Output
Digital Communications:

Two-wire, 4 to 20 mA
HART 7 protocol

HART Output Failure Modes

Honeywell Standard: NAMUR NE 43
Compliance:

Normal Limits: 3.8 – 20.8 mA 3.8 – 20.5

mA
Failure Mode: ≤ 3.6 mA and ≥ 21.0 mA ≤ 3.6 mA and ≥

21.0 mA

Supply Voltage Effect

0.005% span per volt.

Transmitter Turn on Time
(includes power up & test
algorithms)

2.5 sec.

Response Time
(delay + time constant)

100mS

Damping Time Constant

Adjustable from 0 to 32 seconds in 0.1 increments. Default: 0.50 seconds

Vibration Effect

Less than +/- 0.1% of URL w/o damping
Per IEC60770-1 field or pipeline, high vibration level (10-2000Hz: 0.21

displacement/3g max acceleration)

Electromagnetic Compatibility

IEC 61326-3-1

Lightning Protection Option

Leakage Current: 10uA max @ 42.4VDC 93C
Impulse rating: 8/20uS 5000A (>10 strikes) 10000A (1 strike min.)

10/1000uS 200A (> 300 strikes)

Materials Specifications (see model selection guide for availability/restrictions with various models)

Parameter

Description

Barrier Diaphragms Material

316L SS, Hastelloy® C-2762

Process Head Material

316 SS4, Carbon Steel (Zinc-plated) 5, Hastelloy® C-2766

Vent/Drain Valves & Plugs

1

316 SS4, Hastelloy® C-2762

Head Gaskets

Glass-filled PTFE standard. Viton® and graphite are optional.

Meter Body Bolting

Carbon Steel (Zinc plated) standard. Options include 316 SS, NACE A286 SS bolts
and Super Duplex.

Optional Adapter Flange and
Bolts

Adapter Flange materials include 316 SS, Hastelloy® C-276 and Super-Duplex. Bolt
material for flanges is dependent on process head bolts material chosen. Standard
adaptor seal material is glass-filled PTFE. Viton and graphite are optional.

Mounting Bracket

2” Pipe, Carbon Steel (Zinc-plated), 304 Stainless Steel or 316 Stainless Steel

Fill Fluid

Silicone 200 , CTFE

Electronic Housing

Pure Polyester Powder Coated Low Copper (<0.4%)-Aluminum. Meets NEMA 4X,
IP66, & IP67. All stainless steel housing is optional.

Mounting

Can be mounted in virtually any position using the standard mounting bracket. Bracket
is designed to mount on 2-inch (50 mm) vertical or horizontal pipe. See Figure 3.

Process Connections

1/4- NPT or 1/2- NPT with adapter (meets DIN requirements)

Wiring

Accepts up to 16 AWG (1.5 mm diameter).

Dimensions

See Figure 3.

Net Weight

8.3 pounds (3.8 Kg) with Aluminum Housing.

1

Vent/Drains are sealed with Teflon®

2

Hastelloy

®

C-276 or UNS N10276

4

Supplied as 316 SS or as Grade CF8M, the casting equivalent of 316 SS.

5

Carbon Steel heads are zinc-plated and not recommended for water service due to hydrogen migration. For that service, use 316 stainless steel wetted

Process Heads.

6

Hastelloy C-276 or UNS N10276. Supplied as indicated or as Grade CW12MW, the casting equivalent of Hastelloy C-276

6 STD700 Smart Pressure Transmitter

Communications Protocols & Diagnostics

HART Protocol

Version:
HART 7
Power Supply

Voltage: 10.8 to 42.4Vdc at terminals
Load: Maximum 1440 ohms See Figure 2.
Minimum Load: 0 ohms. (For handheld communications, a minimum load of 250 ohms is required)

Standard Diagnostics

ST 700 top level diagnostics are reported as either critical or non-critical and readable via the DD/DTM tools or integral
display as shown below.

Critical Diagnostics

HART DD/DTM Tools

Standard Display

Electronic Module DAC
Failure

Fault Comm El

Meter Body NVM
Corrupt

Fault Mtrbody
Config. Data Corrupt

Fault Comm El

Electronic Module Diag
Failure

Fault Comm El

Meter Body Critical
Failure

Fault Mtrbody
Sensor Comms Timeout

Fault Mbd Com

Non-Critical Diagnostics

HART DD/DTM Tools

Display Failure

Electronic Module Comm Failure

Meter Body Excess Correct

Sensor Over Temperature

Fixed Current Mode

PV Out of Range

No Factory Calibration

LRV Set Error – Zero Config. Button

URV Set Error – Zero Config. Button

AO Out of Range

Loop Current Noise

Meter Body Unreliable Comm

No DAC Calibration

Sensor Supply Voltage Low

Refer to ST 700 manuals for additional level diagnostic information

STD700 Smart Pressure Transmitter 7

Hazardous Areal Certifications:

MSG

CODE

AGENCY

TYPE OF PROTECTION

COMM.

OPTION

ELECTRICAL

PARAMETERS

AMBIENT TEMP

(Ta)

A

FM

Approvals

TM

USA

Explosionproof:
Class I, Division 1, Groups A, B, C, D;
Dust Ignition Proof:
Class II, III, Division 1, Groups E, F, G;
T6..T5
Class l, Zone 0/1, AEx db IIC T6..T5 Ga/Gb
Class ll, Zone 21, AEx tb IIIC T95o Db

All

Note 1

T5: -50 ºC to 85ºC
T6: -50 ºC to 65ºC

Intrinsically Safe:
Class I, II, III, Division 1, Groups A, B, C, D,
E, F, G: T4
Class l, Zone 0, AEx ia IIC T4 Ga
FISCO Field Device (Only for FF Option)
Ex ia IIC T4 Ga; Ex ic IIC T4 Gc

4-20 mA /
DE/ HART

Note 2a

-50 ºC to 70ºC

Foundation

Fieldbus

Note 2b

-50 ºC to 70ºC

Nonincendive:
Class I, Division 2, Groups A, B, C, D
locations, T4
Class l, Zone 2, AEx nA IIC T4 Gc

4-20 mA /

DE/ HART/

Foundation

Fieldbus

Note 1

-50 ºC to 85ºC

Enclosure: Type 4X/ IP66/ IP67

All

All

-

STANDARDS: FM Class 3600:2011; FM Class 3610: 2010; FM Class 3611: 2004; FM Class
3615: 2006; FM Class 3616: 2011; FM Class 3810: 2005; ANSI/ISA 60079-0: 2013; ANSI/UL
60079-1: 2015; ANSI/UL 60079-11: 2014; ANSI/ISA 60079-15: 2012; ANSI/UL 60079-26: 2017;
ANSI/UL 60079-31: 2015; ANSI/NEMA 250: 2003; ANSI/ IEC 60529: 2004

B

Canadian

Standards

Association

(CSA)

USA and

Canada

Explosion Proof:

Class I, Division 1, Groups A, B, C, D;
Class II, Division 1, Groups E, F, G;
Class III, Division 1, T6..T5
Class I Zone 1 AEx db IIC T6..T5 Ga/Gb
Ex db IIC T6..T5 Ga/Gb
Zone 22 AEx tb IIIC T95o Db
Ex tb IIIC T95o Db

All

Note 1

T5: -50oC TO 85oC
T6: -50oC TO 65oC

Intrinsically Safe:
Class I, II, III, Division 1, Groups A, B, C, D;
Class II, Division 1, Groups E, F, G;
Class III, Division 1, T4
Class I Zone 0, AEx ia IIC T4 Ga
Class I Zone 2, AEx ic IIC T4 Gc
Ex ia IIC T4 Ga
Ex ic IIC T4 Gc
FISCO Field Device (Only for FF Option)
Ex ia IIC T4 Ga;
Ex ic IIC T4 Gc

4-20 mA /
DE/ HART

Note 2

-50oC TO 70oC

Foundation

Fieldbus

Note 2

-50oC TO 70oC

Nonincendive:

Class I, Division 2, Groups A, B, C, D;
Class II, Division 2, Groups F, G;
Class III, Division 2, T4
Class I Zone 2 AEx nA IIC T4 Gc
Ex nA IIC T4 Gc

4-20 mA /

DE/ HART/

Foundation

Fieldbus

Note 1

-50oC to 85oC

Enclosure: Type 4X/ IP66/ IP67

All

All

-

8 STD700 Smart Pressure Transmitter

MSG

CODE

AGENCY

TYPE OF PROTECTION

COMM.

OPTION

ELECTRICAL

PARAMETERS

AMBIENT TEMP

(Ta)

STANDARDS: CSA C22.2 No. 0-10; CSA C22.2 No. 94-M91; CSA C22.2 No. 25-1966; CSA C22.2

No. 30-M1986; CSA C22.2 No. 142-M1987; CSA C22.2 No. 157-92; CSA C22.2 No. 213-M1987;
CSA-C22.2 No. 60529:05; CSA-C22.2 No. 60079-0:11; CSA-C22.2 No. 60079-1:11; CSA-C22.2
No. 60079-11:11; CSA-C22.2 No. 60079-15:12; CSA-C22.2 No. 60079-31:12; ISA 12.12.01­2010; ISA 60079-0: 2009; ISA 60079-11: 2011; ISA 60079-15: 2009; ISA 60079-26: 2008; ISA­60079-27:2007 (12.02.04)-2006 (R2011); UL 913 Ed. 6; UL 916:1998; ANSI/ISA-12.27.01-2011

C

ATEX

Flameproof: SIRA 12ATEX2233X

II 1/2 G Ex db IIC T6..T5 Ga/Gb
II 2 D Ex tb IIIC T95oC…T120oC Db

All

Note 1

T5: -50oC TO 85oC
T6: -50oC TO 65oC

Intrinsically Safe: SIRA 12ATEX2233X

II 1 G Ex ia IIC T4 Ga
FISCO Field Device (Only for FF Option)
II 1 G Ex ia IIC T4 Ga

4-20 mA / DE/

HART

Note 2

-50oC TO 70oC

Foundation

Fieldbus

Note 2

-50oC TO 70oC

Zone 2, Increase Safety: SIRA
12ATEX4234X

II 3 G Ex ec IIC T4 Gc

4-20 mA / DE/

HART/

Note 1

-50oC TO 85oC

Zone 2, Intrinsically Safe: SIRA
12ATEX4234X

II 3 G Ex ic IIC T4 Gc
FISCO Field Device (Only for FF Option)
II 3 G Ex ic IIC T4 Gc

4-20 mA / DE/

HART/

Foundation

Fieldbus

Note 2

-50oC TO 85oC

Enclosure: IP66/ IP67

All

All

-

STANDARDS: EN 60079-0: 2012/A11: 2013; EN 60079-1: 2014; EN 60079-7: 2015; EN 60079­11: 2012; EN 60079-26: 2015; EN 60079-31: 2009

D

IECEx

World

Flameproof: IECEx SIR 12.0100X

Ex db IIC T6..T5 Ga/Gb
Ex tb IIIC T95oC…T120oC Db

All

Note 1

T5: -50oC TO 85oC
T6: -50oC TO 65oC

Intrinsically Safe: IECEx SIR 12.0100X
Ex ia IIC T4 Ga
FISCO Field Device (Only for FF Option)
Ex ia IIC T4 Ga; Ex ic IIC T4 Gc

4-20 mA / DE/

HART

Note 2

-50oC TO 70oC

Foundation

Fieldbus

Note 2

-50oC TO 70oC

Zone 2, Increase Safety: IECEx SIR

12.0100X

Ex ec IIC T4 Gc

4-20 mA / DE/

HART/

Foundation

Fieldbus

Note 1

-50oC TO 85oC

Zone 2, Intrinsically Safe: IECEx SIR

12.0100X

Ex ic IIC T4 Gc
FISCO Field Device (Only for FF Option)
Ex ic IIC T4 Gc

4-20 mA / DE/

HART/

Foundation

Fieldbus

Note 2

-50oC TO 85oC

Enclosure: IP66/ IP67

All

All

-

STANDARDS: IEC 60079-0: 2011; IEC 60079-1: 2014; IEC 60079-7: 2017; IEC 60079-11: 2011;
IEC 60079-26: 2014; IEC 60079-31: 2013

STD700 Smart Pressure Transmitter 9

E

SAEx

South Africa

Flameproof :

Ex d IIC T6…T5 Ga/Gb
Ex tb IIIC T95oC…T120oC Db

All

Note 1

T5: -50oC TO 85oC
T6: -50oC TO 65oC

Intrinsically Safe:

Ex ia IIC Ga T4
FISCO Field Device (Only for FF Option)
Ex ia IIC T4 Ga; Ex ic IIC T4 Gc

4-20 mA / DE/

HART

Note 2

-50oC TO 70oC

Foundation

Fieldbus

Note 2

-50oC TO 70oC

Zone 2, Increase Safety:

II 3 G Ex ec IIC T4 Gc

4-20 mA / DE/

HART/

Foundation

Fieldbus

Note 1

-50oC TO 85oC

Zone 2, Intrinsically Safe:
Ex ic IIC T4 Gc
FISCO Field Device (Only for FF Option)
Ex ic IIC T4 Gc

4-20 mA / DE/

HART/

Foundation

Fieldbus

Note 2

-50oC TO 85oC

Enclosure: IP66/ IP67

All

All

-

F

INMETRO

Brazil

Flameproof:

Ex db IIC T6..T5 Ga/Gb
Ex tb IIIC T95oC…T120oC Db

All

Note 1

T5: -50oC TO 85oC
T6: -50oC TO 65oC

Intrinsically Safe:
Ex ia IIC T4 Ga

FISCO Field Device (Only for FF Option)
Ex ia IIC T4 Ga; Ex ic IIC T4 Gc

4-20 mA / DE/

HART

Note 2a

-50oC TO 70oC

Foundation

Fieldbus

Note 2b

-50oC TO 70oC

Zone 2, Increase Safety:

II 3 G Ex ec IIC T4 Gc

4-20 mA / DE/

HART/

Foundation

Fieldbus

Note 1

-50oC TO 85oC

Zone 2, Intrinsically Safe:
Ex ic IIC T4 Gc
FISCO Field Device (Only for FF Option)
Ex ic IIC T4 Gc

4-20 mA / DE/

HART/

Foundation

Fieldbus

Note 2

-50oC TO 85oC

Enclosure : IP 66/67

All

All

-

G

NEPSI

CHINA

Flameproof:

Ex db IIC T6..T5 Ga/Gb
Ex tb IIIC T 95oC Db

All

Note 1

T5: -50oC TO 85oC
T6: -50oC TO 65oC

Intrinsically Safe:
Ex ia IIC T4 Ga
FISCO Field Device (Only for FF Option)
Ex ia IIC T4 Ga; Ex ic IIC T4 Gc

4-20 mA / DE/

HART

Note 2

-50oC TO 70oC

Foundation

Fieldbus

Note 2

-50oC TO 70oC

Zone 2, Increase Safety:

II 3 G Ex ec IIC T4 Gc

4-20 mA / DE/

HART/

Foundation

Fieldbus

Note 1

-50oC TO 85oC

Zone 2, Intrinsically Safe:
Ex ic IIC T4 Gc
FISCO Field Device (Only for FF Option)
Ex ic IIC T4 Gc

4-20 mA / DE/

HART/

Foundation

Fieldbus

Note 2

-50oC TO 85oC

Enclosure : IP 66/67

All

All

-

10 STD700 Smart Pressure Transmitter

I

EAC

Russia, Belarus

and

Kazakhstan

Flameproof:

Ga/Gb Ex d IIC T6..T5
Ex tb IIIC Db T 85oC

All

Note 1

T5: -50oC TO 85oC
T6: -50oC TO 65oC

Intrinsically Safe:
Ga Ex ia IIC T4 X
FISCO Field Device
(Only for FF Option)
Ga Ex ia IIC T4 X

4-20 mA /

DE/ HART

Note 2

-50oC TO 70oC

Foundation

Fieldbus

Note 2

-50oC TO 70oC

Zone 2, Non Sparking:

2 Ex nA IIC T4 Gc X

4-20 mA /

DE/ HART/

Foundation

Fieldbus

Note 1

-50oC TO 85oC

Zone 2, Intrinsically Safe:
Ga Ex ic IIC T4 X
FISCO Field Device
(Only for FF Option)
2 Ex ic IIC T4 Gc X

4-20 mA /

DE/ HART/

Foundation

Fieldbus

Note 2

-50oC TO 85oC

Enclosure : IP 66/67

All

All

J

CCoE

INDIA

Flameproof:

Ex d IIC T6..T5 Ga/Gb

All

Note 1

T5: -50oC TO 85oC
T6: -50oC TO 65oC

Intrinsically Safe:
Ex ia IIC T4 Ga
FISCO Field Device (Only for FF Option)
Ex ia IIC T4 Ga; Ex ic IIC T4 Gc

4-20 mA / DE/

HART

Note 2

-50oC TO 70oC

Foundation

Fieldbus

Note 2

-50oC TO 70oC

Non Sparking

Ex nA IIC T4 Gc

4-20 mA / DE/

HART/

Foundation

Fieldbus

Note 1

-50oC TO 85oC

Enclosure: IP66/ IP67

All

All

-

K

UATR

UKRAINE

Flameproof:

II 1/2 G Ex db IIC T6..T5 Ga/Gb
II 2 D Ex tb IIIC T95oC…T120oC Db

All

Note 1

T5: -50oC TO 85oC
T6: -50oC TO 65oC

Intrinsically Safe:

II 1 G Ex ia IIC T4 Ga
FISCO Field Device (Only for FF Option)
II 1 G Ex ia IIC T4 Ga

4-20 mA / DE/

HART

Note 2

-50oC TO 70oC

Foundation

Fieldbus

Note 2

-50oC TO 70oC

Enclosure: IP66/ IP67

All

All

-

STD700 Smart Pressure Transmitter 11

Notes:

1. Operating Parameters:

Voltage= 11 to 42 V DC

Current= 4-20 mA Normal

2. Intrinsically Safe Entity Parameters
a. Analog/ DE/ HART Entity Values:

Vmax= Ui = 30V

Imax= Ii= 105mA

Ci = 4.2nF

Li =984 uH

Pi =0.9W

Transmitter with Terminal Block Revision E or Later

Vmax= Ui = 30V

Imax= Ii= 225mA

Ci = 4.2nF

Li = 0

Pi =0.9W

Note : Transmitter with Terminal Block Revision E or later

The revision is on the label that is on the module. There will be two lines of text on the label:

 First is the Module Part #: 50049839-001 or 50049839-002
 Second line has the supplier information, along with the REVISION:

XXXXXXX-EXXXX, THE “X” is production related, THE POSITION of the “E” IS THE REVISION.

Other Certification Options

SIL

SIL 2/3 Certification

IEC 61508 SIL 2 for non-redundant use and SIL 3 for redundant use according
to EXIDA and TÜV Nord Sys Tec GmbH & Co. KG under the following
standards: IEC61508-1: 2010; IEC 61508-2: 2010; IEC61508-3: 2010.

Materials

- NACE MR0175, MR0103, ISO15156

12 STD700 Smart Pressure Transmitter

Mounting & Dimensional Drawings

Reference Dimensions:

millimeters

inches

Mounting Configurations

Dimensions

Figure 3 – Typical mounting dimensions of STD725, STD735 & STD775 for reference only

STD700 Smart Pressure Transmitter 13

Model STD700
Differential Pressure Transmitter

Model Selection Guide:
34-ST-16-121 Issue 8

KEY NUMBER

URL LRL Max Span Min Span Units Selection Availability

400/(1000) -400/(-1000) 400/(1000) 4.0 (10)

" H2O (mbar)

STD725

100 (7.0) -100 (-7.0) 100 (7.0) 1 (0.07) psi (bar) STD735

3000 (210) -100 (-7.0) 3000 (210) 30 (2.1) psi (bar) STD775

TABLE I

316L Stainless Steel A _ _ _ _ _ _ * * *
Hastelloy® C-276 B _ _ _ _ _ _ * * *
316L Stainless Steel E _ _ _ _ _ _ * * *
Hastelloy C-276 F _ _ _ _ _ _ * * *

Hastelloy C-276 J _ _ _ _ _ _ * * *
Silicone Oil 200 _ 1 _ _ _ _ _ * * *
Fluorinated Oil CTFE _ 2 _ _ _ _ _ * * *

None None (1/4" NPTF female thread Std) _ _ A _ _ _ _ * * *

1/2" NPT female

Materials to Match Head & Head Bolt Materials Selections

1

_ _ H _ _ _ _ * * *

Carbon Steel _ _ _ C _ _ _ * * *
316 SS _ _ _ S _ _ _ * * *
Grade 660 (NACE A286) with NACE 304 SS Nuts _ _ _ N _ _ _ * * *
Grade 660 (NACE A286) Bolts & Nuts _ _ _ K _ _ _ p p p
Super Duplex _ _ _ D _ _ _ p p p

Head Type Vent Type Location

Single Ended None None None _ _ _ _ 1 _ _ * * *
Single Ended Standard Vent Side

Matches Head Material

1

_ _ _ _ 2 _ _ * * *

Single Ended Center Vent Side Stainless Steel Only _ _ _ _ 3 _ _ t t t
Dual Ended Standard Vent End

Matches Head Material

1

_ _ _ _ 4 _ _ * * *

Dual Ended Center Vent End Stainless Steel Only _ _ _ _ 5 _ _ t t t

Dual Ended Std Vent/Plug Side/End

Matches Head Material

1

_ _ _ _ 6 _ _ * * *

Teflon® or PTFE (Glass Filled)

_ _ _ _ _ A _ * * *

Viton® or Fluorocarbon Elastomer

_ _ _ _ _ B _ * * *

Graphite _ _ _ _ _ C _ * * *

g. Static

Pressure

Standard Static Pressure - 4500 psig (315 bar) _ _ _ _ _ _S * * *

a. Measurement

Range

METER BODY SELECTIONS

a. Process

Wetted Heads &

Diaphragm

Materials

Process Head Material

Diaphragm Material

Plated Carbon Steel

316 Stainless Steel

Hastelloy C-276

b. Fill Fluid

c. Process

Connection

d. Bolt/Nut

Materials

e. Vent/Drain

Type/Location

Vent Material

f. Gasket

Material

1

Except Carbon Steel Heads shall use 316SS Vent/Drain, Plugs & Adapters when required

Instructions:

Make selections from all Tables: Key through XIII using column below the proper arrow. Asterisk indicates

availability. Letter (a) refer to restrictions highlighted in the restrictions table. Tables delimited with dashes.

Key I II III IV V VI VII VIII IX

STD7_ _ - _ _ _ _ _ _ - _ - _ - _ _ _ - _ _ _ - _ - _ _ _ _ - _ _, _ _, _ _ - 0 0 0 0

Model Selection Guide

Model Selection Guides are subject to change and are inserted into the specifications as guidance only.

14 STD700 Smart Pressure Transmitter

1 2 3

STD775

STD735

H L L H

H 90

o

L STD725

TABLE II

Standard

High Side Left, Low Side Right2 / Std Head Orientation

1

* * *

Reversed

Low Side Left, High Side Right2 / Std Head Orientation

2

* * *

90/Standard

High Side Left, Low Side Right2 / 900 Head Rotation

3 h h h

TABLE III

0 * * *
A

* * *

B * * *

C

* * *

D

* * *

E

* * *

F

* * *

G

* * *

I

* * *

J

* * *

K * * *

TABLE IV

Connection

1/2 NPT

A _ _ * * *

M20

B _ _ * * *

1/2 NPT

C _ _ * * *

M20

D _ _ * * *

1/2 NPT

E _ _ * * *

M20

F _ _ * * *

1/2 NPT

G _ _ * * *

M20

H _ _ * * *

_ H _ *

* *

Indicator

None

_ _ 0

*

* *

None

_ _ A

*

* *

Standard (w/Internal

Zero,Span & Config

Buttons)

_ _ S

*

* *

Standard (w/Internal

Zero,Span & Config

Buttons)

_ _ T

*

* *

TABLE V

1 _ _ *

* *

Write Protect Fail Mode

Disabled High> 21.0mAdc Honeywell Std (3.8 - 20.8 mAdc) _ 1 _ *

* *

Disabled Low< 3.6mAdc Honeywell Std (3.8 - 20.8 mAdc) _ 2 _ *

* *

Enabled High> 21.0mAdc Honeywell Std (3.8 - 20.8 mAdc) _ 3 _ *

* *

Enabled

Low< 3.6mAdc Honeywell Std (3.8 - 20.8 mAdc) _ 4 _ *

* *

Factory Standard

_ _ S *

* *

Custom Configuration (Unit Data Required from customer) _ _ C *

* *

2

Left side/Right side as viewed from the customer connection perspective

3

NAMUR Output Limits 3.8 - 20.5mAdc can be configured by the customer or select custom configuration Table Vc

Approvals

SAEx Explosion proof, Intrinsically Safe & Non-incendive

CCoE Explosion proof, Intrinsically Safe & Non-incendive

UATR Flameproof, Intrinsically Safe & Dustproof

EAC-Customs Union(Russia,Belarus and Kazakhstan)EX Approval Flameproof,Intrinsically Safe

c. General

Configuration

EN, RU

EN, RU

CONFIGURATION SELECTIONS

a. Application

Software

Yes (Zero/Span Only)

None

Diagnostics

Standard Diagnostics

Yes

None

None

None

316 Stainless Steel (Grade CF8M)

Yes

b. Output Limit,

Failsafe & Write

Protect Settings

High & Low Output Lim its

3

c. Customer

Interface

Selections

Ext Zero, Span & Config Buttons

Languages

316 Stainless Steel (Grade CF8M)

None

316 Stainless Steel (Grade CF8M)

None

316 Stainless Steel (Grade CF8M)

Yes

b. Output/

Protocol

Analog Output

Digital Protocol

4-20mA dc

HART Protocol

Meter Body & Connection Orientation

Head/Connect

Orientation

None

Polyester Powder Coated Aluminum

Agency Approvals (see data sheet for Approval Code Details)

No Approvals Required

FM Explosion proof, Intrinsically Safe, Non-incendive, & Dustproof

CSA Explosion proof, Intrinsically Safe, Non-incendive, & Dustproof

ATEX Explosion proof, Intrinsically Safe & Non-incendive

IECEx Explosion proof, Intrinsically Safe & Non-incendive

TRANSMITTER ELECTRONICS SELECTIONS

a. Electronic

Housing Material

& Connection

Type

Material

Lightning Protection

Polyester Powder Coated Aluminum

None

Polyester Powder Coated Aluminum

Yes

Polyester Powder Coated Aluminum

Yes

INMETRO Explosion proof, Intrinsically Safe & Non-incendive

NEPSI Explosion proof, Intrinsically Safe & Non-incendive

STD700 Smart Pressure Transmitter 15

STD775

STD735

STD725

TABLE VI

Accuracy

Standard Factory Std Single Calibration A * * *

Standard Custom (Unit Data Required) Single Calibration B * * *

TABLE VII

None None 0 _ _ _ * * *
Angle Bracket Carbon Steel 1 _ _ _ * * *
Angle Bracket 304 SS 2 _ _ _ * * *
Angle Bracket 316 SS 3 _ _ _ * * *
Marine Approved Bracket 304 SS 4 _ _ _ * * *
Flat Bracket Carbon Steel 5 _ _ _ * * *

6 _ _ _ * * *

Flat Bracket 316 SS

7 _ _ _ * * *

No customer tag _ 0 _ _ * * *

One Wired Stainless Steel Tag (Up to 4 lines 26 char/line) _ 1 _ _ * * *

No Conduit Plugs or Adapters Required _ _ A0 * * *

_ _ A2 n n n

_ _ A6 n n n

_ _ A7 m m m

TABLE VIII

00 * * *

NACE MR0175; MR0103; ISO15156 Process wetted parts only

FG * * *

NACE MR0175; MR0103; ISO15156 Process wetted and non-wetted parts F7 c c c

Marine (DNV,ABS,BV,KR,LR) MT d d d

EN10204 Type 3.1 Material Traceability FX * * *

Certificate of Conformance F3 * * *

Calibration Test Report & Certificate of Conformance F1 * * *

Certificate of Origin F5 * * *
FMEDA (SIL 2/3) Certification FE j j j
Over-Pressure Leak Test Certificate (1.5X MAWP) TP * * *

Cert Clean for O2 or CL2 service per ASTM G93 OX e e e

PM Certification

4

PM * * *

01 * * *
02 * * *
03 * * *

04 * * *

TABLE IX

Factory Factory Identification 0000

* * *

MODEL RESTRICTIONS

Table

c 1d

d Iva

e Ib

j

m IV a

n IV a

p

s I a

t

b

FIELD INSTALLABLE REPLACEMENT PARTS

Terminal Strip w/o Lightning Protection Kit for HART Module
Terminal Strip w/Lightening Protection for HART Module
HART Electronics Module
HART Electronics Module w/connection for external configuration buttons
Standard Display Module

PRODUCT MANUALS

All product documentation is available at www.honeywellprocess.com.

a. Accuracy and

Calibration

ST 700 Smart Transmitter HART Communications Manual - English

34-ST-25-47

ST 700 Smart Transmitter Safety Manual - English

34-ST-25-37

50129832-501

50129832-502

50129828-501

50129828-502

50126003-501

Description

Part Number

ST 700 Smart Transmitter User Manual - English

34-ST-25-44

III

B- No CRN number available

Ia

J _ _ _ _ _ _

Select only one option from this group

4

The PM option is available on all Smartline Pressure Transmitter process wetted parts such as process heads, flanges, bushings and vent plugs
except plated carbon steel process heads and flanges. PM option information is also available on diaphragms except STG and STA in-line
construction pressure transmitters.

Description

Kit Number

A, E _ _ _ _ _ _

Vb

_ 1,2 _

B, D, F, H _ _

A, C, E, G _ _

_ 2 _ _ _ _ _

C, D, G, H _ _

VIIa

1, 2, 3, 5, 6, 7 _ _ _hIe

_ _ _ _ 4, 5, 6_ _

VIIa

1, 2, 3, 4, 5, 6, 7 _ _ _

Restriction Letter

Available Only with

Not Available with

Selection(s)

Table

Selection(s)

_ _ _ N,K,D _ _ _

Certifications &

Warranty

b

b

Extended Warranty Additional 1 year

b
Extended Warranty Additional 2 years

Extended Warranty Additional 3 years

Extended Warranty Additional 4 years

Manufacturing Specials

b. Customer
Tag

Customer Tag Type

c. Unassembled

Conduit

Plugs &

Adapters

Unassembled Conduit Plugs & Adapters

1/2 NPT Male to 3/4 NPT Female 316 SS Certified Conduit Adapter

1/2 NPT 316 SS Certified Conduit Plug

M20 316 SS Certified Conduit Plug

OTHER Certifications & Options: (String in sequence comm a delimited (XX, XX, XX,….)

None - No additional options

CALIBRATION & ACCURACY SELECTIONS

Calibrated Range

Calibration Qty

ACCESSORY SELECTIONS

a. Mounting

Bracket

Bracket Type

Material

Flat Bracket

304 SS

For more information

To learn more about SmartLine Pressure
Transmitters visit www.honeywellprocess.com
Or contact your Honeywell Account Manager

Process Solutions

Honeywell

1250 W Sam Houston Pkwy S
Houston, TX 77042

Honeywell Control Systems Ltd
Honeywell House, Skimped Hill Lane
Bracknell, England, RG12 1EB

34-ST-03-121
Jan 2021

2021 Honeywell International Inc.

Shanghai City Centre, 100 Jungi Road
Shanghai, China 20061

www.honeywellprocess.com

Sales and Service

For application assistance, current specifications, ordering, pricing, and name of the nearest Authorized Distributor,
contact one of the offices below.

ASIA PACIFIC

Honeywell Process Solutions,
Phone: + 800 12026455 or

[phone]
(TAC) hfs-tac-

[e-mail]

Australia

Honeywell Limited
Phone: +(61) 7-3846 1255
FAX: +(61) 7-3840 6481
Toll Free 1300-36-39-36
Toll Free Fax:
1300-36-04-70

China – PRC - Shanghai

Honeywell China Inc.
Phone: [phone]
Fax: [phone]

Singapore

Honeywell Pte Ltd.
Phone: +(65) 6580 3278
Fax: +(65) 6445-3033

South Korea

Honeywell Korea Co Ltd
Phone: +[phone]
Fax: +[phone]

EMEA

Honeywell Process Solutions,
Phone: + 800 12026455 or

[phone]

Email: (Sales)

[e-mail]

or
(TAC)

[e-mail]

Web

Knowledge Base search
engine http://bit.ly/2N5Vldi

AMERICAS

Honeywell Process Solutions,
Phone: (TAC) [phone]

or [phone]
(Sales) 1-800-343-0228

Email: (Sales)

[e-mail]

or
(TAC)

[e-mail]

Web

Knowledge Base search
engine http://bit.ly/2N5Vldi

Specifications are subject to change without notice.