smartline st700 pressure transmitters
Remote Diaphragm Transmitters - SmartLine STR700
SmartLine® ST700 Remote Diaphragm Seal Transmitters provide accurate measurement in a wide variety of applications involving corrosive or high-temperature process fluids.
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Overview
Honeywell offers the following ST700 Remote Diaphragm Seal Transmitters:
- Flush flange seals
- Flange seal with extended diaphragm
- Pancake seals
- Sanitary seals
- Chemical tee Taylor wedge
- Seals with threaded process connections
- Saddle seals
- Calibration rings
- Stainless steel armor and PVC-coated, stainless steel armor capillaries
- 2” Stainless steel nipples
- Welded meter body
| STR73D/ STR735D | -100 to 100 psig (-7 to 7 bar) | 1 to 100 psig (0.07 to 7 bar) |
| STR74G/ STR745G | -500 to 500 psig (-35 to 35 bar) | 5 to 500 psig (0.035 to 35 bar) |
Specifications
Processing & Performance Metrics
- Accuracy
- Up to 0.075% of span (standard), 0.040% (optional for STR745G)
- Maximum Turndown Ratio
- STR735D: 111:1
- STR745G: 100:1
Electrical Specifications
- Supply Voltage
- 10.8 to 42.4 VDC (IS versions limited to 30 VDC), 0 to 1,440 ohms load resistance
- Pressure Range
- STR735D: 100 psid (-100 to +100 psid, min span 0.9 psid)
- STR745G: 500 psig (-14.7 to +500 psig, min span 5 psig)
Environmental Conditions
- Stability
- Not explicitly stated, but optimized for minimal temperature effects
- Relative Humidity
- 0 to 100% RH
- Rangeability
- Up to 100:1 (STR735D: 111:1)
- Measurement Type
- Differential Pressure (DP) and Gauge Pressure (GP) with Remote Diaphragm Seals
- Maximum Allowable Working Pressure (MAWP)
- STR735D: 750 psig (51.7 bar)
- STR745G: 500 psig (35 bar); limited by body or seal rating
- Ambient Temperature Limits
- -55 to +90 deg C (Storage); LCD display: -20 to +70 deg C (Operation)
Functional & Control Features
- Sensor Technology
- Piezoresistive sensor with static pressure & temperature compensation
- Diagnostics
- Comprehensive on-board diagnostics, critical/non-critical, SIL 2/3 certified
Standards & Certifications
- Safety Approvals
- SIL 2/3 Certified, Dual Seal Design, NAMUR NE-43 Compliance, World Class Overpressure Protection
- Approvals
- FM, CSA, ATEX, IECEx, NEPSI, KOSHA, EAC, CCoE, UATR, SAEx, INMETRO, IEC 61508 SIL 2/3
I/O Capabilities
- Response Time
- Not explicitly stated, but similar SmartLine transmitters are as fast as 100 ms millisecond
- Configuration
- External Zero, Span & Configuration Capability; Three-Button Local Configuration
Communication & Protocols
- Output/Communications
- 4 to 20 mA, HART (v7.0)
Overview
- Models
- STR735D, STR745G
Technical Specifications
- Display Options
- Modular LCD (Alphanumeric), Multiple screens, Configurable units, Multiple languages (EN, RU)
Processing & Performance Metrics
- Accuracy
- Up to 0.075% of span (standard), 0.040% (optional for STR745G)
- Maximum Turndown Ratio
- STR735D: 111:1
- STR745G: 100:1
Electrical Specifications
- Supply Voltage
- 10.8 to 42.4 VDC (IS versions limited to 30 VDC), 0 to 1,440 ohms load resistance
- Pressure Range
- STR735D: 100 psid (-100 to +100 psid, min span 0.9 psid)
- STR745G: 500 psig (-14.7 to +500 psig, min span 5 psig)
Environmental Conditions
- Stability
- Not explicitly stated, but optimized for minimal temperature effects
- Relative Humidity
- 0 to 100% RH
- Rangeability
- Up to 100:1 (STR735D: 111:1)
- Measurement Type
- Differential Pressure (DP) and Gauge Pressure (GP) with Remote Diaphragm Seals
- Maximum Allowable Working Pressure (MAWP)
- STR735D: 750 psig (51.7 bar)
- STR745G: 500 psig (35 bar); limited by body or seal rating
- Ambient Temperature Limits
- -55 to +90 deg C (Storage); LCD display: -20 to +70 deg C (Operation)
Functional & Control Features
- Sensor Technology
- Piezoresistive sensor with static pressure & temperature compensation
- Diagnostics
- Comprehensive on-board diagnostics, critical/non-critical, SIL 2/3 certified
Standards & Certifications
- Safety Approvals
- SIL 2/3 Certified, Dual Seal Design, NAMUR NE-43 Compliance, World Class Overpressure Protection
- Approvals
- FM, CSA, ATEX, IECEx, NEPSI, KOSHA, EAC, CCoE, UATR, SAEx, INMETRO, IEC 61508 SIL 2/3
I/O Capabilities
- Response Time
- Not explicitly stated, but similar SmartLine transmitters are as fast as 100 ms millisecond
- Configuration
- External Zero, Span & Configuration Capability; Three-Button Local Configuration
Communication & Protocols
- Output/Communications
- 4 to 20 mA, HART (v7.0)
Overview
- Models
- STR735D, STR745G
Technical Specifications
- Display Options
- Modular LCD (Alphanumeric), Multiple screens, Configurable units, Multiple languages (EN, RU)
- Accuracy : Up to 0.075% of span (standard), 0.040% (optional for STR745G)
- Supply Voltage : 10.8 to 42.4 VDC (IS versions limited to 30 VDC), 0 to 1,440 ohms load resistance
- Stability : Not explicitly stated, but optimized for minimal temperature effects
- Sensor Technology : Piezoresistive sensor with static pressure & temperature compensation
- Safety Approvals : SIL 2/3 Certified, Dual Seal Design, NAMUR NE-43 Compliance, World Class Overpressure Protection
- Response Time : Not explicitly stated, but similar SmartLine transmitters are as fast as 100 ms millisecond
- Relative Humidity : 0 to 100% RH
- Rangeability : Up to 100:1 (STR735D: 111:1)
- Pressure Range : STR735D: 100 psid (-100 to +100 psid, min span 0.9 psid)|STR745G: 500 psig (-14.7 to +500 psig, min span 5 psig)
- Output/Communications : 4 to 20 mA, HART (v7.0)
- Models : STR735D, STR745G
- Measurement Type : Differential Pressure (DP) and Gauge Pressure (GP) with Remote Diaphragm Seals
- Maximum Turndown Ratio : STR735D: 111:1|STR745G: 100:1
- Maximum Allowable Working Pressure (MAWP) : STR735D: 750 psig (51.7 bar)|STR745G: 500 psig (35 bar); limited by body or seal rating
- Display Options : Modular LCD (Alphanumeric), Multiple screens, Configurable units, Multiple languages (EN, RU)
- Diagnostics : Comprehensive on-board diagnostics, critical/non-critical, SIL 2/3 certified
- Configuration : External Zero, Span & Configuration Capability; Three-Button Local Configuration
- Approvals : FM, CSA, ATEX, IECEx, NEPSI, KOSHA, EAC, CCoE, UATR, SAEx, INMETRO, IEC 61508 SIL 2/3
- Ambient Temperature Limits : -55 to +90 deg C (Storage); LCD display: -20 to +70 deg C (Operation)
Brochure
Name
Description
File Size
Date
Size
Our SmartLine ST800 Pressure Transmitters include absolute pressure, gauge pressure, draft range pressure, flanged and remote seal transmitters.
application/pdf 863.51 KB
7/1/2023
863.51 KB
SmartLine® ST700 Absolute Pressure Transmitters are targeted at applications requiring robust performance in vacuum applications.This includes low-pressure measurement in vacuum distillation columns.
application/pdf 5.39 MB
10/31/2023
5.39 MB
Download the latest family brochure for SmartLine. This covers the new features of all Temperature, Pressure, Multivariable and many more transmitters that Honeywell has to offer.
application/pdf 14.99 MB
1/29/2024
14.99 MB
Data Sheet
Name
Description
File Size
Date
Size
STR700 SmartLine Remote Diaphragm Seals Technical Specification 34-ST-03-104
application/pdf 2.93 MB
12/19/2025
2.93 MB
STR700 Remote Diaphragm Specification-CN
application/pdf 1.73 MB
6/6/2022
1.73 MB
HART DTMs for ST 800, ST 700, SMV800, STT850, STT650, STT750, STT700, ST 3000, and STT 250 products. Device configuration parameters are organized under Configuration, Monitoring, Diagnostics and Maintenance giving a good user experience.
application/pdf 109.55 KB
10/31/2023
109.55 KB
White Paper
Name
Description
File Size
Date
Size
White Paper detailing the materials selected and used in the construction of Honeywell pressure transmitters for process control systems in processing industries.
application/pdf 1.92 MB
6/8/2022
1.92 MB
Name
Description
File Size
Date
Size
Our SmartLine ST800 Pressure Transmitters include absolute pressure, gauge pressure, draft range pressure, flanged and remote seal transmitters.
application/pdf 863.51 KB
7/1/2023
863.51 KB
STR700 SmartLine Remote Diaphragm Seals Technical Specification 34-ST-03-104
application/pdf 2.93 MB
12/19/2025
2.93 MB
SmartLine® ST700 Absolute Pressure Transmitters are targeted at applications requiring robust performance in vacuum applications.This includes low-pressure measurement in vacuum distillation columns.
application/pdf 5.39 MB
10/31/2023
5.39 MB
STR700 Remote Diaphragm Specification-CN
application/pdf 1.73 MB
6/6/2022
1.73 MB
Download the latest family brochure for SmartLine. This covers the new features of all Temperature, Pressure, Multivariable and many more transmitters that Honeywell has to offer.
application/pdf 14.99 MB
1/29/2024
14.99 MB
HART DTMs for ST 800, ST 700, SMV800, STT850, STT650, STT750, STT700, ST 3000, and STT 250 products. Device configuration parameters are organized under Configuration, Monitoring, Diagnostics and Maintenance giving a good user experience.
application/pdf 109.55 KB
10/31/2023
109.55 KB
White Paper detailing the materials selected and used in the construction of Honeywell pressure transmitters for process control systems in processing industries.
application/pdf 1.92 MB
6/8/2022
1.92 MB
Name
Description
File Size
Date
Size
Our SmartLine ST800 Pressure Transmitters include absolute pressure, gauge pressure, draft range pressure, flanged and remote seal transmitters.
863.51 KB
7/1/2023
SmartLine® ST700 Absolute Pressure Transmitters are targeted at applications requiring robust performance in vacuum applications.This includes low-pressure measurement in vacuum distillation columns.
5.39 MB
10/31/2023
Download the latest family brochure for SmartLine. This covers the new features of all Temperature, Pressure, Multivariable and many more transmitters that Honeywell has to offer.
14.99 MB
1/29/2024
STR700 SmartLine Remote Diaphragm Seals Technical Specification 34-ST-03-104
2.93 MB
12/19/2025
HART DTMs for ST 800, ST 700, SMV800, STT850, STT650, STT750, STT700, ST 3000, and STT 250 products. Device configuration parameters are organized under Configuration, Monitoring, Diagnostics and Maintenance giving a good user experience.
109.55 KB
10/31/2023
White Paper detailing the materials selected and used in the construction of Honeywell pressure transmitters for process control systems in processing industries.
1.92 MB
6/8/2022
Name
Description
File Size
Date
Size
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