24595_ins_BAPI_4_room_humidity
Installation & Operating Instructions
BAPI-Stat 4 Room Humidity Sensor (BA/
B4
-H200 Series)
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
rev. 12/15/17
Specifications subject to change without notice.
3 of 5
Fig 5:
R34 %RH Adjustment Potentiometer
Adjustments for Units with a Display
The optional technician adjustments allows a technician to set temperature and humidity offsets, °F or °C
display indication and which parameters are shown on the display. When the unit is powered up, pressing
switch SW1 will enter the user calibration adjustment mode (See Fig 4) and the LCD will show page zero, P0.
The page numbers auto-scroll to P5 and then the unit returns to the normal run mode. Pressing SW1 when
any page number is displayed will show the calibration value that is associated with that page. The variable will
auto-scroll and will show all the allowed values for the selected page. Pressing SW1 when the variable value
you need is shown will record that value and return to showing page numbers.
* “When active” means when moving the setpoint slider.
** Display toggles through selections
.
Optional Technician Adjustments
Potentiometer R34 (Fig. 5) can be used to adjust the humidity output by ±5%. A high accuracy
humidity reference is recommended.
Fig 4:
SW1
Calibration
Switch
Humidity Output Selection
Fig 6:
Humidity Output Jumpers
Moving the jumper on connector J4 will change the humidity output from 4 to 20mA, 0 to 5VDC or 0 to 10VDC.
Fig 6 shows the jumper in the 4 to 20mA position. The 0 to 10 VDC jumper is used for the 2 to 10 VDC signal if
an H212 or H312 was ordered.
Parameter
Page Designator Adjustment
Temperature Offset
P0
±5° in 0.1° increments. A high accuracy reference is recommended.
Humidity Offset
P1
±5% in 0.1% increments or R34 (When R34 is selected, humidity offset is set
by turning potentiometer R34, See Fig. 5 below.)
Display Units
P2
°F or °C
Display RH to Temp Toggle Time
P3
3 to 11 seconds
Display Resolution
P4
0 = 0.5
1 = 0.1
Display Section
P5
0 = Temperature, Humidity and Temperature Setpoint when active*
1 = Temperature and Temperature Setpoint when active*
2 = Humidity and Temperature Setpoint when active*
3 = Temperature, Humidity and Temperature Setpoint**
4 = Temperature and Temperature Setpoint**
5 = Humidity and Temperature Setpoint**
6 = Temperature Setpoint
7 = Temperature and Humidity**
8 = Temperature
9 = Humidity
Humidity Offset Potentiometer R34
Optional Test Balance Switch (SW2)
Optional Test and Balance Switch (SW2)
NORM: Thermistor/RTD will operate normally
LOW: Will set the sensor value low
HI: Will set the sensor value high
The test and balance switch is used by the balancer to equalize the flow of air or water. It can also be used to verify sensor
termination in a point-to-point checkout of the control system. The “NORM” position allows the real sensor to be monitored. The
“HI” position forces the output to a very hot reading and the “LOW” position forces the output to a very cold output (See Table 1).
Sensor Type
Low Temp (40º F) Resistance High Temp (105º F) Resistance
1000Ω RTD
1.02KΩ (41.2º F)
1.15KΩ (101.5º F)
3000Ω Thermistor
7.87KΩ (39.8º F)
1.5KΩ (106.8º F)
10K-2 Thermistor
30.1KΩ (34.9º F)
4.75Ω (109.1º F)
10K-3 Thermistor
26.7KΩ (35.9º F)
5.11KΩ (108.4º F)
10K-3(11K) Thermistor
7.32KΩ (43.7º F)
3.65Ω (105.2º F)
Table 1: Test and Balance Resistance Values