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Installation and Operating Instructions

Delta Style Room Humidity Transmitter with Optional Temp. Sensor 

BA/#-Hxxx-R

Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI  54631 USA

Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:[email protected] • Web:www.bapihvac.com

Specifications subject to change without notice.

27417_ins_Delta_RH

3 of 4

rev. 04/15/14

10 Second Toggle

Humidity Display Only

Temp. Display Only

J2 Jumper “On”

Degrees = °F

°F or °C Indication 

(for display units only)

The jumper on J2 determines whether the unit will 

display in Fahrenheit or Celcius. With the jumper 

“On”, the unit displays in Fahrenheit which is the 

factory default. (See diagrams at right.)

J2 Jumper “Off”

Degrees = °C

Humidity Reading Offset 

(for display units only)

The Humidity reading can be offset by ±5% by turning 

POT R20. (See diagram at right.)

Zero Humidity Offset (centered) is the  factory 

default. Turning clockwise increases the Humidity 

Offset by up to +5%. Turning counterclockwise 

decreases the Humidity Offset by up to -5%.

Unit Interval Toggle Rate Between Display of Temperature and Humidity 

(for display units only)

POT R6 sets the approximate toggle rate between 

temperature and humidity display of 3 to 15 seconds. POT 

R6 can also be used to set a constant display of either 

temperature or humidity. (See diagram at right.)

Specifications

Power: 

Reverse polarity protected.

  4 to 20 mA Output  ........ 10 to 35 VDC, 22mA max

  0 to 5 VDC Output ........ 10 to 35 VDC, 22mA max

    

12 to 24 VAC, 0.53VA max 

  0 to 10 VDC Output) ..... 15 to 40 VDC, 6mA max 

    

15 to 28 VAC, 0.14VA max

Note: half wave DC power is recommended. If AC power is 

used, it must be shielded from the signal wiring.

Sensor:

  Humidity ............. Capacitive w/ temperature compensation 

& digital output.

   

%RH resolution is 8 bit

  Optional Temp. ... Passive Thermistor, RTD or 

Semiconductor with bias of 5 to 30VDC

Filter:

 

None

RH Accuracy:

 

RH Sensor chip

  200 

±2%, from 20% to 80%RH @77ºF

  200 

±3%, from <20% to >80%RH @77ºF

  300 

±3%, from 0% to 100%RH @77ºF

  Resolution 

RH sensor 0.4% 

Temp Display Accuracy:

 Temperature Chip only

  Temperature 

±0.6˚C @25˚C

  Resolution 

Temp sensor 0.2˚

Optional Temp Sensor Accuracy:

 Passive 2 wire only

  Thermistor* ......... (std) ±0.36ºF, (±0.2ºC)

   

(High) ±0.18ºF, (±0.1ºC), [XP] option

  RTD  ................... Platinum (PT), 3.85Ω/ºC for 1KΩ RTD

   

Platinum (PT), 0.385Ω/ºC for 100Ω RTD

     

Nickel (Ni), 2.95Ω/ºF for the JCI RTD

  Solid State .......... AD592, bias 5-30VDC    

Output:

 Updated every 2 seconds

  RH (0 to 100%)  4 to 20mA, 0 to 5VDC or 0 to 10VDC

  Temperature 

Passive Resistance or Semiconductor

Impedance:

 

  Current  

700Ω @ 24VDC minimum

  Voltage   

10KΩ maximum

Terminals: 

 

Cage clamp, 16 to 22 AWG

Wiring:

 

2 to 6 pair depending on options

Mounting: 

 

Standard 2”x4” J-box or drywall, screws provided

Field Humidity Calibration Offset:

 (Factory calibrated) 

  %RH Adj. 

Potentiometer, ±5%

Enclosure Material: 

ABS Plastic, UL94V-HB

Optional Display:

  3.5 digit LCD 

  Dimensions ......... 0.5”H x 1.1”W, Digits .4”H

   

(13.34 x 29.21mm), (Digits 10.29mm H)

  Range  ................ 0 to 100%, -58 to 199.5˚F (-50 to 150˚C), 

factory set

  Span ................... 0 to 100%, 32 to 122˚F (0 to 50˚C), factory set

  Resolution .......... 0.5%RH or 0.5˚F or °C

  Units ................... ˚F or ˚C, Board jumper (J2) 

  Update ................ Every 2 seconds, factory set

  Alternating .......... Temp/RH, adjustable 3-15 seconds or fixed 

temperature or humidity

  Power up ............ 0% RH & 0.0˚ at power up for OK

   

Then reads value after 2 seconds

  Fault ................... RH 100% or Temp 0% for sensor fault after 500 sec.

Optional Comm. Jack:

   

 

  -C35 

3.5mm Phono jack

Optional Test & Balance Switch:

  -TB 

3 position switch High/Normal/Low

   

Passive temp sensor output only

Environmental Ambient Range:

  Temp 

32º to 122ºF, (0º to 50ºC)

  Humidity 

5% to 95% RH (Non-Condensing)

Agency:

 

RoHS, UL94V-HB, 

   

CE* (EN50081-1:1998, EN61000-6-2)

*All passive thermistors 10KΩ and smaller 

 are CE Compliant

Reviews: