A/RH5-O-NIST Humidity and Temperature Sensor Module - Equivalent & Substitute Parts

Part Overview

The A/RH5-O-NIST is an active product humidity and temperature sensor module manufactured by Automation Components, Inc. This chassis-mounted module provides dual analog outputs (current and voltage) for relative humidity measurement across the 0 to 100% RH range with ±5% RH accuracy. The sensor delivers a 20-second response time and operates across a supply voltage range of 18 to 28VAC or 12 to 40VDC, making it suitable for industrial HVAC, environmental monitoring, and process control applications. Equivalent substitute parts are available to address inventory requirements, extended operating temperature ranges, or alternative packaging configurations while maintaining core electrical and mechanical compatibility.

Key Parameters

Parameter	Specification
Sensor Type	Humidity, Temperature
Humidity Range	0 ~ 100% RH
Output Type	Analog Current, Analog Voltage
Output Signals	0V ~ 5V, 0V ~ 10V, 4mA ~ 20mA
Accuracy	±5% RH
Response Time	20 s
Voltage Supply	18 ~ 28VAC, 12 ~ 40VDC
Mounting Type	Chassis Mount
Operating Temperature	1.5°C ~ 60°C
Package / Case	Module
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the A/RH5-O-NIST are classified based on strict parametric equivalence. All substitute parts maintain identical core specifications: humidity range (0 ~ 100% RH), output type (Analog Current and Analog Voltage), output signals (0V ~ 5V, 0V ~ 10V, 4mA ~ 20mA), accuracy (±5% RH), response time (20 s), supply voltage range (18 ~ 28VAC, 12 ~ 40VDC), mounting type (Chassis Mount), and package type (Module).

Substitution grouping is determined by the following allowed parameters:

Operating Temperature Range: The main part operates at 1.5°C ~ 60°C. Substitute parts A/RH5-AN-D and A/RH5-CP-D extend the lower operating limit to -40°C, providing enhanced cold-temperature performance. All other substitutes maintain the 1.5°C ~ 60°C range.
Series Designation: Substitutes are organized into series A/RHx-AN and A/RHx-CP, with the main part and certain substitutes carrying no series designation.
Packaging Configuration: The main part uses standard Module packaging. All substitutes are supplied in Tape & Box (TB) packaging.
Inventory Availability: Substitute parts offer varying stock levels, ranging from 750 to 1084 pieces.

All substitute parts are Active products from Automation Components, Inc., ensuring current manufacturing support and availability.

Parameter Comparison

Part Number	Humidity Range	Output Type	Accuracy	Response Time	Supply Voltage	Operating Temperature	Mounting Type	Packaging	Inventory (Pcs)
A/RH5-O-NIST	0 ~ 100% RH	Analog Current, Analog Voltage	±5% RH	20 s	18 ~ 28VAC, 12 ~ 40VDC	1.5°C ~ 60°C	Chassis Mount	Module	1178
A/RH5-AN-D	0 ~ 100% RH	Analog Current, Analog Voltage	±5% RH	20 s	18 ~ 28VAC, 12 ~ 40VDC	-40°C ~ 60°C	Chassis Mount	Tape & Box (TB)	800
A/RH5-AN-R	0 ~ 100% RH	Analog Current, Analog Voltage	±5% RH	20 s	18 ~ 28VAC, 12 ~ 40VDC	1.5°C ~ 60°C	Chassis Mount	Tape & Box (TB)	750
A/RH5-AN-R2	0 ~ 100% RH	Analog Current, Analog Voltage	±5% RH	20 s	18 ~ 28VAC, 12 ~ 40VDC	1.5°C ~ 60°C	Chassis Mount	Tape & Box (TB)	869
A/RH5-AN-R2O	0 ~ 100% RH	Analog Current, Analog Voltage	±5% RH	20 s	18 ~ 28VAC, 12 ~ 40VDC	1.5°C ~ 60°C	Chassis Mount	Tape & Box (TB)	1084
A/RH5-AN-RSO-A03-A1	0 ~ 100% RH	Analog Current, Analog Voltage	±5% RH	20 s	18 ~ 28VAC, 12 ~ 40VDC	1.5°C ~ 60°C	Chassis Mount	Tape & Box (TB)	1076
A/RH5-CP-D	0 ~ 100% RH	Analog Current, Analog Voltage	±5% RH	20 s	18 ~ 28VAC, 12 ~ 40VDC	-40°C ~ 60°C	Chassis Mount	Tape & Box (TB)	801
A/RH5-CP-R	0 ~ 100% RH	Analog Current, Analog Voltage	±5% RH	20 s	18 ~ 28VAC, 12 ~ 40VDC	1.5°C ~ 60°C	Chassis Mount	Tape & Box (TB)	768
A/RH5-CP-R2	0 ~ 100% RH	Analog Current, Analog Voltage	±5% RH	20 s	18 ~ 28VAC, 12 ~ 40VDC	1.5°C ~ 60°C	Chassis Mount	Tape & Box (TB)	840

Engineering Selection Recommendations

All substitute parts listed are Active products from Automation Components, Inc., ensuring current manufacturing support and compliance with active product status requirements.

Selection based on operating temperature requirements:

For applications requiring extended low-temperature operation below 1.5°C, select A/RH5-AN-D or A/RH5-CP-D, which operate down to -40°C while maintaining all other electrical and mechanical specifications.
For standard temperature range applications (1.5°C ~ 60°C), all remaining substitute parts are functionally equivalent to the A/RH5-O-NIST.

Selection based on packaging and inventory:

A/RH5-AN-R2O and A/RH5-AN-RSO-A03-A1 offer the highest inventory availability (1084 and 1076 pieces respectively) in Tape & Box packaging.
A/RH5-AN-R and A/RH5-CP-R offer the lowest inventory levels (750 and 768 pieces respectively).

All substitute parts maintain identical electrical performance: dual analog outputs (0V ~ 5V, 0V ~ 10V, 4mA ~ 20mA), ±5% RH accuracy, 20-second response time, and supply voltage compatibility (18 ~ 28VAC, 12 ~ 40VDC).

Frequently Asked Questions (FAQ)

Q: Can A/RH5-AN-D or A/RH5-CP-D be used as direct replacements for A/RH5-O-NIST in all applications?

A: Yes, with the exception that A/RH5-AN-D and A/RH5-CP-D extend the operating temperature range to -40°C ~ 60°C. If your application operates above 1.5°C, these parts are fully compatible. If your application requires operation below 1.5°C, these extended-range parts are necessary.

Q: What is the difference between the A/RHx-AN and A/RHx-CP series?

A: Both series maintain identical electrical and mechanical specifications for humidity measurement, output types, accuracy, and response time. The series designation reflects internal design or manufacturing variants. Selection between series should be based on inventory availability and packaging requirements, as electrical performance is equivalent.

Q: Does packaging type affect electrical performance?

A: No. The difference between Module packaging (A/RH5-O-NIST) and Tape & Box (TB) packaging (all substitutes) is purely a delivery and handling format. Electrical specifications, output signals, accuracy, and response time remain identical.

Q: Are all substitute parts currently manufactured?

A: Yes. All substitute parts carry Active product status, indicating current manufacturing support from Automation Components, Inc.

Q: Which substitute part should I select for maximum inventory availability?

A: A/RH5-AN-R2O offers the highest inventory level at 1084 pieces, followed by A/RH5-AN-RSO-A03-A1 at 1076 pieces. Both maintain the standard 1.5°C ~ 60°C operating temperature range and are supplied in Tape & Box packaging.

Q: Can I mix A/RHx-AN and A/RHx-CP series parts in the same system?

A: Yes. Both series are parametrically equivalent for humidity measurement, output signals, accuracy, and response time. System compatibility depends on your application's electrical and mechanical requirements, not on series designation.

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