Dwyer Instruments A3000 series Installation And Operating Instructions

The PHOTOHELIC ® Series A3000 is a versatile 2-in-1 instru-
ment combining a time-proven Magnehelic
sure gage with low/high pressure switches. It is designed to
measure and control positive, negative or differential pressure
of air or other non-combustible, non-corrosive gases. Gage
reading is unaffected by switch operation. Switch set points are
easily adjusted with knobs located on gage face. Applied pres-
sure and switch set points are fully visible at all times.
Deadband is one pointer width, less than 1% of full scale. Each
set point controls a DPDT relay and both relays can be inter-
locked to provide variable deadband control.
SPECIFICATIONS
GAGE SPECIFICATIONS
Service: Air and non-combustible, compatible gases.
Wetted Materials: Consult Factory.
Accuracy: Photohelic , ±2% of full scale at 70°F (21.1°C). ±3%
®
on -0 and ±4% on -00 models. Capsu-Photohelic
scale at 70°F (21.1°C). ±2% on 43000S models; ±4% on 43215,
43220 and 43500.
Pressure Limits: Photohelic
bar). MP option; 35 psig (2.41 bar), HP option; 80 psig (5.52 bar).
36003S – 36010S; 150 psig (10.34 bar). 36020S and higher;1.2 x
full scale pressure. Capsu-Photohelic
0.677 to 34.5 bar).
Temperature Limits: 20° to 120°F.
(-6.67° to 48.9°C) Low temperature option available.
Process Connections: Photohelic
Photohelic ® 1/4˝ female NPT.
Size: Photohelic ® , 4˝ (101.6 mm) dial face, 5˝ (127 mm) O.D. x 8-
1/4˝ (209.55 mm). Capsu-Photohelic
(127 mm) O.D. x 9-3/16" (233.36 mm).
Weight: Photohelic , 4 lbs. (1.81 kg). Capsu-Photohelic
®
oz. (2.49kg). Capsu-Photohelic
SWITCH SPECIFICATIONS
Switch Type: Each setpoint has 2 Form C relays (DPDT).
Repeatability: ±1% of full scale.
Electrical Rating: Photohelic
VAC; Capsu-Photohelic ®
Hz res. 10A @ 28 VDC.
Electrical Connections: Screw Terminals.
Power Requirements: 120 VAC, 50/60 Hz; 240 VAC & 24 VAC
Power optional.
Mounting Orientation: Diaphragm in vertical position. Consult
factory for other position orientations.
Set Point Adjustment: Adjustable knobs on face.
Agency Approvals: Photohelic
Sec. 4; CSA: File No. LR22541-34; CE: EN 61000-6-2: 1999, EN
6100-3-2: 2000, EN 61000-3-3: 2000.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.
Series A3000 Photohelic
Specifications - Installation and Operating Instructions
® differential pres-
® ± 3% of full
® -20" Hg. to 25 psig (-0.677 to 1.72
® , -20Hg. To 500 psig (-
® , 1/8˝ female NPT. Capsu-
® , 4˝ (101.6 mm) dial face, 5˝
®
® Brass 11 lbs., 2 oz. (5.05 kg).
® , 10A @ 28 VDC, 10A @ 120, 240
10A @ 120 VAC, 6A @ 240 VAC, 60
® UL: File No. E38121, Vol. 1,
®
Differential Pressure Switch/Gage
1/8 FEMALE NPT HIGH
PRESSURE CONNECTION
1/8 FEMALE NPT LOW
PRESSURE CONNECTION
Ø4-3/4
[120.65]
3/4 CONDUIT
CONNECTION
4-3/8 [111.13]
HOUSING REMOVAL
NOTE: Detailed dimension drawings are available from our Customer Service
Dept. for PHOTOHELIC
For weatherproof housing, request no. 13-700132-00. /For explosion-proof
INSTALLATION
1. Location: Select a clean, dry, vibration-free location where
ambient temperatures will be between 20 and 120°F (-6.67 and
48.9°C). Tubing supplying pressure to the instrument can be
practically any length but long runs will increase response time
slightly.
2. Position: The PHOTOHELIC
brated for use with scale in a vertical plane. Operation at other
angles may affect accuracy and/or require zero adjustment.
Most models can be specially calibrated at the factory for other
positions if specified at time of ordering. Ranges below 1" W.C.
must be used only with scale vertical.
3. Mounting: The PHOTOHELIC
making electrical connections. The electrical enclosure is
removable at any time regardless of mounting method.
(A) Panel Mounting: Normal mounting is flush or through panel
as shown in Fig. B. Allow 4-
the unit for removal of electrical enclosure. Make a 4-13/16"
(122.24 mm) diameter hole in panel. Insert the PHOTOHELIC
unit from front of panel and slip mounting ring over case from
behind with stepped side facing rear. Fit the snap ring into nar-
row groove at back edge of the bezel. Thread four 6-32 x 1-1/4"
mounting screws into tapped holes in mounting ring and seat it
against snap ring. Tighten screws against back of panel. See
Fig. B.
5 lbs., 8
Ø4-13/16 [122.24]
HOLE REQUIRED FOR
PANEL MOUNTING
Phone: 219/879-8000
Fax: 219/872-9057
Lit-By Fax: 888/891-4963
2-1/2 [63.50]
2-1/16 [52.39]
2 [50.80]
1-1/4
[31.75]
Ø4-47/64
[120.25] Ø5
3-7/8 SQ
[98.43]
3-7/8 [98.43] 5/8 [15.88]
5-1/8 [130.18]
5/8 [15.88] PANEL
6-3/8 [161.93]
MAX
(7-5/8 [193.68]) 3/16 [4.76]
Fig. A
® switch/gages as installed in two optional enclosures.
housing, request no. 13-700113-01.
® Switch/Gage is factory cali-
® is normally mounted before
" (111.13 mm) clearance behind
3 /
8
SNAP RING GROOVE
1/2 MALE NPT PRESSURE CONNECTION.
SINGLE HIGH PRESSURE CONNECTION
FOR SERIES 36000S MODELS.
Fig. B
www.dwyer-inst.com
e-mail: info@dwyer-inst.com
Bulletin B-33-A
(4) 6-32 HOLES
EQUALLY SPACED ON
A 5-1/8 [130.18] B.C.
[127.00]
Ø4 [101.60]
FACE
5-1/2 [139.70]
O.D.
MOUNTING
RING
®