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Honeywell YSTD820 Pressure Transmitter | Differential, 4-20mA+HART, 0-1.5 psi, Diaphragm Seal, Chemical

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Certification

"ACH has proven to be a reliable partner. Their products are genuine and high-quality, with competitive prices and on-time delivery. We trust them as our long-term supplier in automation."

—— Mohammed Al-Farsi, Procurement

"For us, cost efficiency and authenticity are key. ACH helps reduce expenses while ensuring reliable quality and timely supply, making them a strong partner in our operations."

—— Procurement Manager

"For us, cost efficiency and authenticity are key. ACH helps reduce expenses while ensuring reliable quality and timely supply, making them a strong partner in our operations."

—— Supply Chain Director

"ACH offers quick response, flexible solutions, and fair pricing. The products are always genuine and reliable, and their friendly support makes cooperation smooth."

—— Operations Manager

"ACH provides genuine products with stable quality and fair pricing. Their fast response and reliable delivery give us confidence to continue working with them."

—— Engineering Manager

"We value ACH for their consistent quality and competitive pricing. Deliveries are always reliable, and their professional support makes procurement much easier for our team."

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Honeywell YSTD820 Pressure Transmitter | Differential, 4-20mA+HART, 0-1.5 psi, Diaphragm Seal, Chemical

Large Image : Honeywell YSTD820 Pressure Transmitter | Differential, 4-20mA+HART, 0-1.5 psi, Diaphragm Seal, Chemical Get Best Price

Product Details:

Place of Origin:	US
Brand Name:	Honeywell
Certification:	ATEX
Model Number:	YSTD820-F1 (Y) S4AS-1-A-AHE-13C-B-21A6-F1,FX,TP,(PT)-0000
Document:	ACH-AB-P+F-E+H-IFM-ASCO-YOK...WA.pdf

Payment & Shipping Terms:

Minimum Order Quantity:	1
Price:	Negotiable
Packaging Details:	carton
Delivery Time:	Negotiable
Payment Terms:	T/T,XT,ALIPAY
Supply Ability:	100pcs per month

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Detailed Product Description

Power Supply:

12-30 V DC (Two-wire)

Ambient Temperature:

-40°C To 80°C (-40°F To 176°F)

Electrical Rating:

General Purpose, Explosion-proof, Intrinsic Safety (depends On Certification)

Certifications:

Standard Models Include ATEX, IECEx, SIL 2 (consult Manual For Specific Ratings)

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Honeywell YSTD820 Pressure Transmitter | Differential, 4-20mA+HART, 0-1.5 psi, Diaphragm Seal, Chemical

Honeywell YSTD820 pressure transmitter with diaphragm seal. Differential, 4-20mA+HART, 0-1.5 psi, flange mount, for aggressive media.

Product Overview

The Honeywell YSTD820-F1 is a differential pressure transmitter with a remote diaphragm seal system, designed for measuring very low differential pressures in aggressive or viscous media. The full order code indicates a specific configuration including a 0-1.5 psi range, 4-20mA with HART output, a 3" 150# flange process connection, Hastelloy C-276 wetted parts, and specific electrical and mounting options. It is ideal for precise level, flow, or filter monitoring in chemical, oil & gas, and process industries.

Technical Specifications (Transmitter)

Parameter	Specification
Manufacturer	Honeywell International Inc.
Series	ST 3000 SmartLine (YSTD820)
Model	YSTD820-F1 (Full Code: S4AS-1-A-AHE-13C-B-21A6-F1,FX,TP,(PT)-0000)
Product Type	Smart Differential Pressure Transmitter with Diaphragm Seal
Measuring Range	0 to 1.5 psi (0 to 0.103 bar, 0 to 103 mbar)
Accuracy	±0.065% of calibrated span (typical)
Output Signal	4-20 mA with HART Protocol (DE)
Process Connection	3" 150# Flange

Technical Specifications (Configuration Details)

Parameter	Specification (Indicated by Code)
Wetted Parts (Seal)	Hastelloy C-276 diaphragm, Hastelloy C-276 body
Fill Fluid	Silicone oil (standard)
Flange Rating	150 lb ANSI
Mounting Bracket	2" pipe mount
Electrical Connection	1/2" NPT conduit with terminal block
LCD Indicator	Integral, with engineering units
Ambient Temperature	-40 to 85°C (-40 to 185°F)
Process Temperature	-45 to 120°C (-49 to 248°F) (with silicone fill)
Certifications	CE, ATEX, IECEx, SIL 2/3

Key Features

Remote Diaphragm Seal: Isolates the transmitter from hot, viscous, or corrosive process media
Very Low Pressure Range: High accuracy for small differential pressures
HART Communication: Enables remote configuration, calibration, and advanced diagnostics
High-Performance Materials: Hastelloy C-276 wetted parts for extreme corrosion resistance
High Accuracy: ±0.065% span for precise measurement
Robust Construction: Suitable for harsh process environments
Hazardous Area Certified: Approved for use in explosive atmospheres
Safety Integrity: Suitable for use in SIL 2/3 safety instrumented systems

Applications

Level measurement in pressurized tanks with aggressive chemicals
Low differential pressure flow measurement (orifice, venturi)
Filter and strainer monitoring
Critical process control in chemical, petrochemical, and pharmaceutical industries

Honeywell YSTD820 Pressure Transmitter | Differential, 4-20mA+HART, 0-1.5 psi, Diaphragm Seal, Chemical 0

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About ACH

Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL and EMERSON to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.

Frequently Ask & Questions

Are preferential prices available?

Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.

Are the Products Genuine OEM Units?

Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.

How will you arrange shipment?

We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.

What is the warranty of goods?

One-year Warranty.

How long is the logistics cycle of the product?

Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.

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