Daikin Microtech III [18/100] Building pressure sensor

Daikin Microtech III [18/100] Building pressure sensor
Building Pressure Sensor
Input Voltage - 24 VDC
Output - 4-20 mA
NOTE: The transducer output signal is 4-20mA however the
signal entering the VFD is converted to a DC voltage
signal via a 500 Ohm resistor on the Daikin MD
drives.
Figure 10: Building Pressure Sensor Output
Figure 11: Building Pressure Sensor
DC mA
Inches W.C.
24201612840
DC Volts
121086420
0.2
0.3
0.1
0
-0.1
-0.2
-0.3
Low Pressure (-) Port
Transducer provided with Dwyer #A-220 Vinyl
Tube (3'×5/16" O.D.) and Dwyer #A-3029-1
Quick Coupling Adapter (5/16"×1/4" O.D.),
Daikin #910122359. Coupler connects to unit
blue Vinyl Tubing (3/16" I.D.×1/4" O.D.), Daikin
#3499264-XX.
High Pressure (+) Port,
Transducer provided with Dwyer #A-220 Vinyl Tube
(3'×5/16" O.D.) and Dwyer #A-3029-1 Quick Coupling
Adapter (5/16"×1/4" O.D.), Daikin #910122359. Coupler
connects to unit red Vinyl Tubing (3/16" I.D.×1/4" O.D.),
Daikin #3499264-XX.
Tubes must be cut flush to insert fittings.
Insert fitting into tubes after tube
has been cut flush. Then insert
both into coupling.
Clear tubes must be
inserted into couplings at
least 1/2".
DIN rail mounting
Digital display is not included.
Order separately:
Daikin P/N #910117463
Dwyer P/N #A-441
Calibration: Factory set to -0.25ʺ WC to +0.25ʺ WC, where 4ma is
output at -0.25ʺ WC and 20ma is output at +0.25ʺ WC.
Jumper configuration: PJ3 = M position . PJ5 =ZC position.
When required, use external loop resistor 499 OHMs, 1% Tol. Daikin
#044690105.
Accuracy: 0" to 5" WC
Range Accuracy: + 2%
Stability: +1% F.S./year
Temperature Limits: 0°F to 150° (-18°C to 66°C)
Pressure Limits: 1 psi maximum, operation; 10 psi, burst
Power Requirements: 10 to 35 VDC (2-wire)
Output Signals: 4 to 20 mA (2-wire)
Response Time: Field-adjustable 0.5 to 15 seconds time constant.
Provides a 95% response time of 1.5 to 45 seconds
Zero and Span Adjustments: Digital push button
Loop Resistance: Current output 0 to 1250 maximum
Current Consumption: 40 mA maximum
Display: 4 digit LCD (optional)
Electrical Connections: 4-20 mA, 2-wire; European-style terminal
block for 16 to 26 AWG
Electrical Entry: 1/2" NPS thread; accessory – cable gland for 5 to 10
mm diameter cable
Process Connection: 3/16" (5 mm) I.D. tubing; maximum O.D. 9 mm
Enclosure Rating: NEMA 4X (IP66)
Mounting Orientation: Diaphram in VERTICAL POSITION ONLY
Weight: 8.0 oz. (230 g)
Agency Approvals: CE and UL
25/64
[9.96]
3-11/32
[84.84]
57/64
[22.62]
3-1/2
[88.9]
Ø3-7/16
[Ø87.31]
1-41/64
[41.71]
21/32
[16.67]
29/32
[23.02]
1/2
[12.7]
21/32
[16.67]
2-41/64
[67.24]
1/2 NPT
IM 919-4 • MICROTECH III CONTROLLER 18 www.DaikinApplied.com
Description of Operation

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