controlair 500-BD Manual

Contents
Section Description Page
1.0 Description & Installation 2
2.0 Operation 3
3.0 Maintenance 5
4.0 Troubleshooting 5
5.0 Warranty 5
Pilot Pressure
Atmospheric Pressure
Supply Pressure
Output Pressure
441-622-015 Type 500X Page 1
Electropneumatic Transducer (I/P, E/P)
Installation, Operation and
Maintenance Instructions
Type 500X
Ordering Information
Type 500X I/P Transducers
Output Range
Part Number Input psi bar Impedance
500-AA 4-20 mA 3-9 0.2-0.6 90 Ohms
500-AB 4-20 mA 9-15 0.6-1.0 90 Ohms
500-AC 4-20 mA 3-15 0.2-1.0 180 Ohms
500-AD 4-20 mA 3-27 0.2-1.9 220 Ohms
500-AE 4-20 mA 6-30 0.4-2.0 220 Ohms
500-AF 4-20 mA 1-17 0.1-1.2 250 Ohms
500-BC 10-50 mA 3-15 0.2-1.0 70 Ohms
500-BD 10-50 mA 3-27 0.2-1.9 85 Ohms
500-BE 10-50 mA 6-30 0.4-2.0 85 Ohms
500-AG 4-20 mA 2-60* 0.1-4.0 225 Ohms
500-AH 4-20 mA 3-120* 0.2-8.0 260 Ohms
500-BF 0-60 mA 2-120* 0.1-8.0 220 Ohms
Type 500X E/P Transducers
Output Range
Part Number Input psi bar Impedance
500-CC 0-5 VDC 3-15 0.2-1.0 615 Ohms
500-CD 0-5 VDC 3-27 0.2-1.9 530 Ohms
500-CE 0-5 VDC 6-30 0.4-2.0 530 Ohms
500-DC 1-9 VDC 3-15 0.2-1.0 985 Ohms
500-DD 1-9 VDC 3-27 0.2-1.9 840 Ohms
500-DE 1-9 VDC 6-30 0.4-2.0 840 Ohms
500-CF 0-5 VDC 2-60* 0.1-4.0 500 Ohms
500-EH 0-10 VDC 3-120* 0.2-8.0 805 Ohms
*Output shown is as calibrated at the factory. Large span adjustment capability
allows recalibration to achieve output ranges from 3-35 psig (0.2-2.4 bar) with
2-60 psig unit to 3-145 psig (2.0-10 bar) with 2-120 psig unit.
8 Columbia Drive / Amherst, NH 03031 USA
Website: www.controlair.com
Email: [e-mail]
603-886-9400 FAX [phone]
An ISO-9001:2008 Certified Company

441-622-015 Type 500X Page 2
DANGER, WARNING, CAUTION and NOTE statements
Refers to conditions or hazards which could result in serious personal injury or death.
Refers to conditions or hazards which could result in personal injury.
Refers to conditions or hazards which could result in equipment or property damage.
Alerts you to facts or special instructions.
ALL DANGER, WARNING, AND CAUTION NOTICES MUST BE COMPLIED WITH IN FULL
SPECIFICATIONS
1. DESCRIPTION and INSTALLATION
1.1 Description
1.1.1 The ControlAir Type 500X converts a current or voltage input signal to a linearly proportional pneumatic output
pressure. This versatile instrument is designed for control applications that require a high degree of reliability and
repeatability at an economical cost.
1.2 Principle of Operation
1.2.1 The Type 500X is a force balance device in which a coil is suspended in the field of a magnet by a flexure. Current
flowing through the coil generates axial movement of the coil and flexure. The flexure moves towards the nozzle
and creates back pressure which acts as a pilot pressure to an integral booster relay. Input signal increases (or
decreases for reverse acting) cause proportional output pressure increases.
Zero and Span are calibrated by turning adjust screws on the front face of the unit. Adjustment of the zero screw
repositions the nozzle relative to the flexure. The span adjustment is a potentiometer that controls the amount of
current through the coil.
1.3 Mounting
1.3.1 Unit may be pipe, panel, or bracket mounted. Mounting may be at any angle, though may require field
adjustment. High external vibration may cause output fluctuations. Mounting in a vibration-free area is
recommended.
NOTE
CAUTION
WARNING
DANGER
Low OutputRange High OutputR ange
(Up To 30 Psig) (Up To 120 Psig)
Min./M ax.Supply P ressure Minimum - 3 psig (.21 BAR) Minimum - 5 psig (0.35 BAR)
above maximum output above maximum output
Maximum - 100 psig (7 BAR) Maximum - 150 psig (10.5 BAR)
Supply P ressure Sensitivity <± 0.1% of span per psig <± .04% of span per 1.0 psig
(<± 0.15% of span per 0.1 BAR) (0.07 BAR)
Term inalB ased Linearity <± 0.75% of span <± 1.5% of span typical, ± 2.0% max.
R epeatability < 0.5% of span < 0.5% of span
H ysteresis< 1.0% of span < 0.5% of span
R esponse Time Dependent on pressure range - typically less than 0.25 sec for 3-15 psig units
Flow Rate4.5 scfm (127 Nl/min) at 20.0 scfm (566 Nl/min) at
25 psig (1.7 BAR) supply 150 psig (10.5 BAR) supply
12.0 scfm (340 Nl/min) at
100 psig (6.8 BAR) supply
M aximum Air Consum ption .05 scfm (1.4 Nl/min) midrange typical .07 scfm (2 Nl/min) midrange typical
MediaOil free, clean dry air filtered to 40 micron
ElectricalC onnections Conduit 1/2" NPT (standard); DIN 43650 (optional)
Enclosure Nema 1 (standard); Nema 4X(IP65) (optional)
Tem p.R ange (O perating) -20°F to +140°F (-30°C to 60°C)
PortSizes 1/4 NPT (Pneumatic) 1/4 NPT (Pneumatic)
1/2 NPT (Electric) 1/2 NPT (Electric)
ReliefC apacity 2 scfm (56.6 Nl/min) at 7 scfm (198 Nl/min)
5 psig (2.4 BAR) above at 10 psig (0.7 BAR) above
20 psig (1.3 BAR) setpoint 20 psig (1.3 BAR) setpoint
Weight 2.1 lbs. (0.94 kg) 2.1 lbs. (0.94 kg)

441-622-015 Type 500X Page 3
1.4 Pneumatic Connections
1.4.1 The 1/4 NPT supply and output ports are marked “IN” and “OUT” respectively on the base of the unit. Clean all
pipe lines to remove contamination before installation. Apply pipe compound to male threads of the air line only.
Avoid getting compound in the air lines.
Clean dry instrument quality air must be used. To insure optimum performance supply pressure should be
regulated. To provide stable inlet pressure and prevent contamination of the internal section of the transducer the
use of an Instrument Air Filter Regulator is recommended.
The two unmarked ports on the base of the unit are gage ports but may be used as alternative output ports. Any
unused ports must be plugged.
The I/P transducer enclosure contains aluminum and is considered to constitute a potential risk of
ignition by impact or friction and must be taken into account during installation.
1.5 Electrical Connections
1.5.1 Electrical connections are made to the black and white leads extending out from the 1/2 NPT conduit fitting.
When the positive side of the input signal is connected to the black lead, the output pressure will increase as the
input signal increases.
Figure 1 DIN 43650 Connector
2. OPERATION
2.1 Calibration
2.1.1 Zero and Span should always be checked after mounting. If unit is calibrated in a vertical position and then
mounted at an angle, readjustment of the zero is necessary. To calibrate use the following procedure:
1. Open protective covers to expose zero and span adjustment screws.
2. Connect the recommended air supply to the inlet of the transducer and an accurate pressure gage to the outlet.
3. Connect the electrical input and set the input signal to the minimum value of the range being used
(e.g. 4 mA for a 4-20 mA unit).
4. Observe the output pressure. If necessary adjust zero screw until reaching minimum output pressure setting.
Turn zero screw counter clockwise to increase pressure, clockwise to decrease pressure.
If unable to achieve output during calibration process, turn zero adjustment screw counter
clockwise for up to 30 revolutions, until output pressure rises.
5. Increase electrical input signal to its maximum value (e.g. 20 mA for a 4-20 mA unit).
6. Observe the output pressure. If necessary adjust the span screw until reaching maximum output pressure setting.
For I/P (current) input models turn span screw counter clockwise to increase pressure,
clockwise to decrease pressure. For E/P (voltage) input models turn span screw clockwise
to increase pressure, counter clockwise to decrease pressure.
7. The Zero and Span adjustments are interactive. After adjusting the span it will be necessary to recheck the zero.
Repeat steps 3-6 until both end points are at the required values.
8. For reverse acting performance interchange the black and white electrical signal leads and carry out the same
procedure as described above. Adjust the zero screw with minimum input (4mA) to get maximum output then
adjust span screw with maximum input (20mA) to get minimum output. Repeat as necessary.
Figure 2 Electrical Schematic
WARNING
NOTE
NOTE

2.2 Dimensional Drawings (Dimensions are )
2.3 Intrinsically Safe Operation
2.3.1 ControlAir LLC offers Factory Mutual Intrinsically Safe
approval as a standard feature on all units with a 4-20 mA input signal.
in.
mm
441-622-015 Type 500X Page 4
1.10
27.9
.55
14.0
(2) #18 GA. Wire Leads,
18" Long.
Black = Positive
White = Negative
(2) #10-32 UNF-2A x .38 DP.
Mounting Holes (Shown with
Bracket Screws Installed)
1.15
29.2
1.12
28.4
4.24
107.7
1.13
28.7
1.04
26.4
1.50
38.1
1.50
38.1
.55
14.0
1.13
28.7
Diameter
2.88
73.1
.21
.53
Diameter
MNTG.
Holes
1.250
31.7
2.18
55.4
1.44
36.6
SIGNAL
1/4
NPT
TYP.
Removable
Mounting
Bracket
1/2
NPT
IN OUT
Max (Square)
SPAN
ZERO
Alternate
Out/Gauge
Port
TYP. 180°Apart
Drawing No. 431-990-013
Models 728+, 787S+ and 4045, +24 to +26 VDC, Model 728-, -24 to -26 VDC,
available from MTL Inc. 7541 Gary Road, Manassas, VA 221110, USA.

441-622-015 REV 1-27-21 Type 500X Page 5
3. MAINTENANCE
Under normal circumstances, no maintenance should be required. If clean dry air is not used the orifice can become blocked. To
clean, first turn off supply air, unscrew and remove orifice assembly (large silver screw head located above the out port). Then
unplug orifice by using a wire that has a smaller diameter than 0.015 in. (0.38 mm). Use compressed air to blow out any loose
particles inside the orifice assembly. Screw orifice assembly back into unit.
4. TROUBLESHOOTING
PROBLEM CHECK
No output or low output Zero adjustment
Supply pressure too low
Clogged orifice
Leakage Connections
Low or improper span Zero and Span adjustments
Supply pressure too low
Output leakage
Erratic operation Electrical input signal
Loose wires or connections
Liquid in air supply
5.WARRANTY & DISCLAIMER
ControlAir LLC products are warranted to be free from defects in materials and workmanship for a period of eighteen months from the
date of sale, provided said products are used according to ControlAir LLC recommended usages. ControlAir LLC’s liability is limited to the
repair, purchase price refund, or replacement in kind, at ControlAir LLC’s sole option, of any products proved defective. ControlAir LLC
reserves the right to discontinue manufacture of any products or change products materials, designs or specifications without notice.
These products are intended for use in industrial compressed-air systems only.
Do not use these products where pressures and temperatures can exceed those
listed under Specifications.
Before using these products with fluids other than air, for non-industrial application, life-support systems, or other applications not
within published specifications, consult ControlAir LLC.
WARNING
Lead Wire
Bonnet
O-Ring
O-Ring
Body Subassembly
Circuit
Board
Bottom Plug
Spacer
Pintle Spring