Enhanced View
Site Search
Price Check
 
Quick Order
Product Info
Copy & Paste
Type It In
Enter one item per line:
Qty[TAB or COMMA]Item #
Quick Order
Quick Order
Qty Kele Item

Kele Catalog Order
Humidity
Humidity

Product Bar End
Product Bar End
DP4A, EN4A, WB4A

Dew Point, Enthalpy & Wet Bulb Transmitters

Order Now Order Now!
Model DP4 Dew Point, WB4 Wet Bulb, and EN4 Enthalpy Transmitters are rugged, compact, and ideally suited for monitoring dew point, wet bulb, or enthalpy in building automation and process applications. Using a capacitive RH sensor and an RTD temperature sensor, the unit's microprocessor computes the dew point, wet bulb, or enthalpy. Two linear outputs provide a 4-20mA signal for dew point, wet bulb, or enthalpy, and a 4-20 mA signal for dry bulb. temperature.


arrow
Features
  • Dew point accuracy of ±1.8℉ (±1℃) over the specified range
  • Enthalpy accuracy of ±2 BTU/lb over specified range
  • Wet bulb accuracy of ±3℉ over the specified range
  • Dry bulb accuracy of ±.05℉ (±.03℃)over the specified range
  • Two 4-20 mA output signals
  • Microprocessor-based signal processing
  • Weather resistant duct/OSA mounting
  • Temperature compensated
arrow
Specifications

Accuracy:

Enthalpy:±2 BTU/lb

Dew Point:±1.8°F (±1°C)

Wet Bulb:±3°F (±1.7°C)

Dry Bulb:±0.5°F (±0.9°C)

Supply Voltage:12-30 VDC

Signal Output:Field selectable: 4-20 mA (700Ω max load), 0-5 V, or 0-10 V Humidity and dry bulb temperature

Measurement Range:

Dew Point:

Duct/OSA:-20° to 120°F (-28.8° to 49°C)

Space:40° to 90°F (4.4° to 32.2°C)

Enthalpy:

Space/Duct/OSA:0-50 BTU/lb

Wet Bulb:

Duct/OSA:0° to 100°F (-17.8° to 37.8°C)

Space:40° to 90°F (4.4° to 32.2°C)

Dry Bulb:

Duct/OSA:-20° to 120°F (-28.8° to 49°C)

Space :40° to 90°F (4.4° to 32.2°C)

Sensing Technology:Capacitive and replaceable

Operating Humidity:0 to 99% RH, non-condensing

Operating Temperature:-40° to 140°F (-40° to 60°C)

Approvals: CE

Weight: 1.0 lb (0.45 kg)

Warranty: 1 year

arrow
Certifications




Step 1 Enter a quantity to select a product or products
Step 2 When done selecting, press Add To Cart. You may save as a Project from the Cart.
arrow
Products

(Wholesale customers, log in for your special pricing.)

QtyModelDescriptionIn StockList PriceInternet Price
DP4A-D DUCT DEW POINT & DRY BULB XMTR In Stock721.17576.94
DP4A-O OSA DEW POINT & DRY BULB XMTR In Stock721.17576.94
DP4A-S ROOM DEW POINT & DRY BULB XMTR In Stock557.18445.74
EN4A-D DUCT ENTHALPY & DRY BULB XMTR In Stock721.17576.94
EN4A-O OSA ENTHALPY & DRY BULB XMTR In Stock721.17576.94
EN4A-S ROOM ENTHALPY & DRY BULB XMTR INFO557.18445.74
WB4A-D DUCT WET BULB & DRY BULB XMTR INFO721.17576.94
WB4A-O OSA WET BULB & DRY BULB XMTR In Stock721.17576.94
WB4A-S ROOM WET BULB & DRY BULB XMTR INFO557.18445.74
arrow
Accessories
No accessories found
Download Additional Data

Catalog Page
GE Installation Guide
GE INFRASTRUCTURE SENSING, INC.DP4A, EN4A, WB4A
Overall rating 
3.8 / 5
3.8 / 5
Open Ratings Snapshot
Rating breakdown 4 reviews
5 Stars
2
4 Stars
0
3 Stars
1
2 Stars
1
1 Star
0
Ease of Installation 
4.3 / 5
4.3 / 5
Quality / Performance 
3.5 / 5
3.5 / 5
Value 
2.5 / 5
2.5 / 5
3 out of 4(75%)customers recommend this product.
Share this product
Facebook Twitter
4
4 Model DP4 Dew Point, WB4 Wet Bulb, and EN4 Enthalpy Transmitters are rugged, compact, and ideally suited for monitoring dew point, wet bulb, or enthalpy in building automation and process applications. Using a capacitive RH sensor and an RTD temperature sensor, the unit's microprocessor computes the dew point, wet bulb, or enthalpy. Two linear outputs provide a 4-20mA signal for dew point, wet bulb, or enthalpy, and a 4-20 mA signal for dry bulb. temperature.
Overall rating 
3.8 / 5
3.8 / 5
Open Ratings Snapshot
Rating breakdown 4 reviews
5 Stars
2
4 Stars
0
3 Stars
1
2 Stars
1
1 Star
0
Ease of Installation 
4.3 / 5
4.3 / 5
Quality / Performance 
3.5 / 5
3.5 / 5
Value 
2.5 / 5
2.5 / 5
3 out of 4(75%)customers recommend this product.
Share this product
Facebook Twitter
Product reviews
Click on filters to refine your results.
Ratings summary
Overall rating 
3.8 / 5
3.8 / 5
Open Ratings Snapshot
Rating breakdown 4 reviews
5 Stars
2
4 Stars
0
3 Stars
1
2 Stars
1
1 Star
0
Ease of Installation 
4.3 / 5
4.3 / 5
Quality / Performance 
3.5 / 5
3.5 / 5
Value 
2.5 / 5
2.5 / 5
3 out of 4(75%)customers recommend this product.
Share this product
Facebook Twitter
Advanced filters
and Star Rating
  • or
  • or
  • or
  • or
  • or
MoreFewer
and Ease of Installation
  • or
  • or
  • or
  • or
  • or
MoreFewer
and Quality / Performance
  • or
  • or
  • or
  • or
  • or
MoreFewer
and Value
  • or
  • or
  • or
  • or
  • or
MoreFewer
and Years of Experience
  • or
  • or
  • or
MoreFewer
and Job Function
  • or
  • or
  • or
  • or
  • or
  • or
MoreFewer
Click on filters to refine your results.
Product ReviewsWrite a review
Overall rating 
3 / 5
3 / 5
Expensive but Convenient
PostedDecember 27, 2011
Customer avatar
Andrew
 
Please wait while more information about Andrew is loaded.
Additional information about Andrew could not be loaded.
from Ohio
Years of Experience:5-10
Job Function:Engineering / Design
Ease of Installation 
3 / 5
3 / 5
Quality / Performance 
3 / 5
3 / 5
Value 
2 / 5
2 / 5
We do a lot of humidity control projects with DDC systems and use this sensor with controllers that do not have wet bulb calculation algorithms. I think it is a bit overpriced for what it is. I also do not like the fact that you still have to install an OAT dry buld sensor in conjuction with this sensor. Unfortunately we have not found another wet bulb sensor to use so I think this might have a corner on the market. Ordering it through Kele is convenient and we have found they have the best price compared to other controls suppliers.
Pros: provides reliable wet bulb calculation
Cons: expensive, relativly large, wiring instructions are not great
Yes, I recommend this product.
Share:
Facebook Twitter
0points
0of 0voted this as helpful.
Was this helpful?helpful0unhelpful0
Report inappropriate content
Thank you! You have successfully submitted a comment for this review.
Overall rating 
2 / 5
2 / 5
This product failed after a short period
PostedSeptember 13, 2011
Customer avatar
MNBob
 
Please wait while more information about MNBob is loaded.
Additional information about MNBob could not be loaded.
from Miineapolis
Years of Experience:11+
Job Function:Project Management
Ease of Installation 
4 / 5
4 / 5
Quality / Performance 
1 / 5
1 / 5
Value 
1 / 5
1 / 5
This was a replacement unit for another style you sold several years ago. There are still three of the originals on-site & working in the return air but the original outdoor transmitter failed. I replaced the outdoor transmitter with your newre style but it had an intermittent problem reading too low. I had to replace it after a short time in service under warranty..
Cons: Low value
No, I do not recommend this product.
Share:
Facebook Twitter
0points
0of 0voted this as helpful.
Was this helpful?helpful0unhelpful0
Report inappropriate content
Thank you! You have successfully submitted a comment for this review.
Overall rating 
5 / 5
5 / 5
Accurate measurement
PostedJune 22, 2011
Customer avatar
Engineer
 
Please wait while more information about Engineer is loaded.
Additional information about Engineer could not be loaded.
from Dominican Republic
Years of Experience:5-10
Job Function:Engineering / Design
Ease of Installation 
5 / 5
5 / 5
Quality / Performance 
5 / 5
5 / 5
Value 
4 / 5
4 / 5
I recommend it to adjust the setpoint of cooling towers by the wet bulb temperature outside. And
Great for saving energy.
Especially for buildings will be LEED approved.
My Favorite Feature Easy Installation
Pros: Always in stock
Yes, I recommend this product.
Share:
Facebook Twitter
0points
0of 0voted this as helpful.
Was this helpful?helpful0unhelpful0
Report inappropriate content
Thank you! You have successfully submitted a comment for this review.
Overall rating 
5 / 5
5 / 5
Very Reliable.
PostedJune 8, 2011
Customer avatar
Nakin
 
Please wait while more information about Nakin is loaded.
Additional information about Nakin could not be loaded.
from Nashville, NT
Years of Experience:11+
Job Function:Engineering / Design
Ease of Installation 
5 / 5
5 / 5
Quality / Performance 
5 / 5
5 / 5
Value 
3 / 5
3 / 5
I've used the WB4A-O (Outside Air Wet Bulb) version on several projects and have found them reliable.
Pros: Always in stock, reliable, easy to install
Cons: high price
Yes, I recommend this product.
Share:
Facebook Twitter
0points
0of 0voted this as helpful.
Was this helpful?helpful0unhelpful0
Report inappropriate content
Thank you! You have successfully submitted a comment for this review.
Filtering is in progress. Please wait until it completes.
1-4 of 4
View All Reviews
View All Questions