WINLAND HA-4 Humidity Sensor User Guide
- August 14, 2024
- WINLAND
Table of Contents
WINLAND HA-4 Humidity Sensor
Package Contains
- 1 HA-4
- 1 Mounting Kit (2 screws and 2 anchors)
- 1 Product Guide
Features
- Monitors for the ambient room humidity from 5 to 95% RH with ±3% accuracy between 25 to 75% RH
- May be used in cooler/freezer environments
- Maximum cable run of 1,000’ (304.8m) [18-22 AWG twisted pair]
Note
- To clean the outside of the HA-4, use a soft dry cloth. Do NOT use liquid cleaners, solvents, abrasive cleaners, or compressed air.
- Do NOT open product enclosure, it will void warranty.
- For Winland environmental compliance please visit: http://environmental-compliance.winland.com/
- Test device weekly to ensure proper operation.
Environmental Conditions:
- Overvoltage category OVC I
- Pollution degree 2
- Ingress Protection IP21
Specifications
| Power Requirements | 12V DC or 24V DC, 0.21W Max |
|---|---|
| Sensing Element | Capacitive / IC |
| Sensing Range | 5 to 95% RH at 77 °F (25 °C) |
| Accuracy | ±3% accuracy between 25 to 75% RH at 77 °F (25 °C) |
| Response Time | TC < 12 minutes |
| Operating Temperature | -40 to +140 °F (-40 to +60 °C) |
Indoor use only
Weight| 5.3oz (150.0g)
Dimensions| 3.9” x 2.9” x 1.7” (9.9cm x 7.4cm x 4.3cm)
Mounting| Surface mount
Case Material| ABS
General Information
The Winland HA-4 is a sensor used for monitoring remote locations for rising
or falling rates of humidity. The HA-4 is designed and approved to be used
with the EnviroAlert® and the EnviroAlert Professional® product lines of
monitoring devices including the EA200-12/24, EA400-12/24, EA800-ip, and the
EAPro-GTWY.
Theory of Operation
The HA-4 senses the ambient room humidity electronically using a capacitive sensing element. Humidity should be expected to vary from room to room and from one area of a room to another. Ventilation and airflow will greatly affect relative humidity.
When programming the HA-4 sensor on the monitoring device, the initial reading you receive should be considered a base reading. Allow at least 30 minutes of operation for the sensor to stabilize prior to setting the high and low limits. It is necessary for the temperature of the sensor to stabilize before the readings are considered accurate. The outputs of Winland’s electronic monitoring devices react within seconds of a limit being exceeded. A sudden burst of humid air from a door opening or a ventilation system starting, could cause a brief change in the humidity reading. To avoid false alarms, a time delay should be programmed into the EA200-12/24, EA400-12/24, EA800-ip, and the EAPro-GTWY. It is strongly recommended to utilize a time delay unless your application requires instant notification.
Installation
The HA-4 sensor should be flush mounted directly to a flat surface like a wall. The sensor should be located in an area free from drafts, heat sources, and direct sunlight. It is recommended that the sensor is mounted at a height of 4′ to 5′ (1.2m to 1.5m) from the floor.
Wire the HA-4 to your EA200-12/24, EA400-12/24, EA800-ip or EAPro-GTWY monitoring device using the following wiring scheme (See Figures 2 and 3). Extend the length of the probe wiring up to 1,000′ (304.8m using 18-22 AWG twisted pair.
Radio Frequency Interference Requirements: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
WARRANTY AND SERVICE INFORMATION
Winland Electronics, Inc. (“Winland”) warrants to the original purchaser from Winland that each product of Winland’s that it manufactures shall be free from defects in material and factory workmanship for a period of one (1) year from the date of purchase, when properly installed and operated under normal conditions according to Winland’s instruction.
Winland’s obligation under this limited warranty is limited to correcting the product without charge, at its factory any part or parts thereof which are returned, transportation charges prepaid, to the factory within one year of the date of purchase subject to Winland’s examination showing to Winland’s satisfaction to be covered by this warranty.
Product returns will not be accepted unless a Return Material Authorization has been issued by Winland, which is subject to purchaser’s identification of the purchase order number and product serial number. UNAUTHORIZED RETURN SHIPMENT OR SHIPMENT CONTRARY TO WINLAND’S WRITTEN INSTRUCTIONS WILL VOID THIS LIMITED WARRANTY. Correction of such defects by repair, replacement, or refund of the amount paid for the product, at Winland’s option, shall constitute fulfillment of all Winland’s obligations under this limited warranty. Repaired and replacement parts will be warranted for the remainder of the original product warranty. Repairs not covered by this limited warranty may be offered by Winland for a charge.
This limited warranty shall not apply to any of Winland’s products which have been subject to misuse, negligence, accident, or which have been repaired or altered outside of Winland’s factory.
THIS LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSES, NON-INFRINGEMENT, DESIGN, AND TITLE, AND ANY WARRANTIES ARISING FROM COURSE OF DEALING, USAGE OF TRADE OR OTHERWISE. ALL OTHER REPRESENTATIONS MADE TO THE END USER/PURCHASER BY ANY OTHER PARTY ARE EXCLUDED. No person, agent or dealer is authorized to give warranties on behalf of Winland nor to assume for Winland any other liability in connection with any Winland product.
WINLAND SHALL NOT BE LIABLE TO ANY PERSON FOR INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY DESCRIPTION, WHETHER ARISING OUT OF WARRANTY OR OTHER CONTRACT, NEGLIGENCE, OTHER TORT, STRICT LIABILITY OR OTHERWISE. Under no circumstances shall Winland’s liability under this limited warranty exceed the purchase price paid by the end user/purchaser for the product. The parties agree that the limitation of remedies in this document is an agreed upon allocation of risk and does not cause the remedy to fail of its essential purpose.