100% genuine products & Actual product photos

Sales & Support
Request A Quote - Email

Select Language

English
Français
Deutsch
Italiano
Русский
Español
Português
Nederlandse
ελληνικά
日本語
한국

Home
Products
Videos
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
News

Categories: All Categories

Allen Bradley PLC Controllers

Pepperl Fuchs Safety Barrier

MTL Safety Barrier

E&H Instruments

Rosemount PH Sensors

Bently Nevada Proximity Probe

IFM Sensors

ASCO Valves

Yokogawa Instruments

HONEYWELL Transmitter

SICK Instruments

Festo Cylinder

EMERSON TREX Device Communicator

SIEMENS PLC Products

SMC Instruments

ABB Positioner

WAGO Connectors

VEGA Instruments

Home Products Yokogawa Instruments

Yokogawa HHR-21AHF2A1 Humidity Sensor | Capacitive, Duct Mount, for HR Transmitters

All Products

Allen Bradley PLC Controllers (94)

Pepperl Fuchs Safety Barrier (105)

MTL Safety Barrier (69)

E&H Instruments (10)

Rosemount PH Sensors (59)

Bently Nevada Proximity Probe (47)

IFM Sensors (33)

ASCO Valves (17)

Yokogawa Instruments (80)

HONEYWELL Transmitter (10)

SICK Instruments (34)

Festo Cylinder (55)

EMERSON TREX Device Communicator (3)

SIEMENS PLC Products (15)

SMC Instruments (15)

ABB Positioner (51)

WAGO Connectors (31)

VEGA Instruments (25)

I'm Online Chat Now

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."

—— Procurement Head

Yokogawa HHR-21AHF2A1 Humidity Sensor | Capacitive, Duct Mount, for HR Transmitters

Large Image : Yokogawa HHR-21AHF2A1 Humidity Sensor | Capacitive, Duct Mount, for HR Transmitters Get Best Price

Product Details:

Place of Origin:	JP
Brand Name:	Yokogawa
Certification:	ATEX
Model Number:	HHR-21AHF2A1
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

Contact Now

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)

Highlight:

Yokogawa capacitive humidity sensor

duct mount humidity sensor

HR transmitter humidity sensor

Yokogawa HHR-21AHF2A1 Humidity Sensor | Capacitive, Duct Mount, for HR Transmitters

Yokogawa HHR-21AHF2A1 humidity probe specifications. Capacitive polymer sensor, duct mount, for relative humidity and temperature.

Product Overview

The Yokogawa HHR-21AHF2A1 is a duct-mount humidity and temperature probe designed for use with Yokogawa's HR series humidity transmitters/transducers. It features a capacitive polymer sensor for relative humidity (RH) measurement and a built-in temperature sensor. The probe is designed for installation in air ducts, HVAC systems, and other controlled environments to provide accurate moisture and temperature data to the connected transmitter.

Technical Specifications

Parameter	Specification
Manufacturer	Yokogawa Electric Corporation
Series	HR Series (Humidity)
Model	HHR-21AHF2A1
Product Type	Duct-Mount Humidity & Temperature Probe
Measurement	Relative Humidity (RH), Temperature
Sensor Type	Capacitive Polymer (RH), Pt100 (Temperature)
RH Range	0 to 100% RH
RH Accuracy	Typically ±1.5% RH (at 25°C, 10-90% RH)
Temperature Range	-20 to 80°C (-4 to 176°F)
Temperature Accuracy	Typically ±0.3°C (at 25°C)
Output	Analog signal to HR series transmitter (not a standalone device)
Process Connection	Duct mount with PVC flange and locknut
Cable Length	Standard length (e.g., 2m)
Sensor Housing	Stainless Steel sintered filter (protects sensor)
Operating Environment	Non-condensing

Key Features

Integrated Measurement: Provides both relative humidity and temperature from a single probe
Capacitive Polymer Sensor: Offers good long-term stability and resistance to condensation
Durable Construction: Stainless steel filter protects the sensor in duct environments
Easy Installation: Designed for mounting in standard air duct walls
Compatibility: Specifically designed for use with Yokogawa HR series transmitters (e.g., HR250, HR300)
Wide Measurement Range: Suitable for most HVAC and industrial air monitoring applications

Applications

HVAC system monitoring and control
Cleanroom and laboratory environmental monitoring
Drying and curing process control
Museum and archive preservation
General indoor air quality (IAQ) monitoring in ducts

Important Notes

This is a sensing probe only and requires a compatible Yokogawa HR series transmitter/transducer to operate and provide a standard output signal (e.g., 4-20mA).
The probe is designed for air/gas measurement; it is not for immersion in liquids.
Avoid exposure to corrosive gases, oil mist, or excessive dust, which can damage the sensor.
Condensation on the sensor can cause temporary measurement error.
Regular calibration is recommended to maintain specified accuracy.

Yokogawa HHR-21AHF2A1 Humidity Sensor | Capacitive, Duct Mount, for HR Transmitters 0

More Products

Pepperl Fuchs Safety Barrier

Allen Bradley PLC Controllers

SICK Instruments

Festo Cylinder

IFM Sensors

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.

Tag:

Contact Person: sales2

Send your inquiry directly to us

More Yokogawa Instruments