Neptronic SPC Specification And Installation Instructions

Model Series

SPC

Description

The Neptronic Static Pressure Controller is used to modulate a
damper or variable frequency drive to maintain a constant static
or differential pressure at a given setpoint.

Applications


Control bypass damper actuators, a VFD, or Vortex for VAV
systems

Laboratory pressurization control

Stairwell pressurization control

Energy saving

Features


LCD Display

Simple installation and configuration

Displays actual pressure reading

Adjustable setpoint and dead band

Adjustable response speed

Selectable output signal

Direct or reverse action outputs

Fully calibrated

Real-time pressure output for remote monitoring

Models

Model #
SPC 0.1 0 - 0.1 "wc (0 - 0.025 KPa)
0 - 1.0 "wc (0 - 0.25 KPa)
SPC 1.0
0 - 2.0 "wc (0 - 0.50 KPa)
SPC 2.0
0 - 5.0 "wc (0 - 1.25 KPa)
SPC 5.0

Technical Specifications

Specifications
Power supply
Power consumption
Electrical connection
Input connection
Output signals
Total error (not including long term stability)
Burst pressure
Response speed
Contacts
Operating temperature
Storage temperature
Dimensions
A = 4.33" (110mm)
B = 0.51" (13mm)
C = 2.20" (56mm)
D = 3.18" (81mm)
E = 0.75" (19mm)
F = 4.81" (122mm)
SPC-1-2-5-181010-ESL
Pressure Range
24 Vac ±10%
3.6VA
2
18 AWG (8 mm ) minimum on screw terminals
1/8" (3.175 mm) barbed fitting
Actual pressure output: 0.25 to 4 Vdc
Direct/Reverse acting output: 0 to 10 Vdc, 2 to 10 Vdc, 0 to 20 mA or 4 to 20 mA
Max. ±2.0% of full scale (from 10°C to 40°C [50°F to 104°F])
1.5 PSI (10.3 KPa) either port
Adjustable from 1 (100 mV/sec) to 25 (1.78 V/sec) (factory set: 2)
Programmable ON & Off switching
0ºC to 40ºC [32ºF to 104ºF] | Compensated: 5ºC to 55ºC [41ºF to 131ºF]
-40ºC to 80ºC [-40ºF to 176ºF]
Specification and Installation Instructions

Typical Installation

In order to maintain a constant volume of air through the HVAC
unit, a modulating bypass damper, VFD, or Vortex is used to
control the air bypassed between the supply and return air ducts.
The SPC is used to sense the supply air pressure and relieve
excess air as the static pressure builds up.
Return Air
24Vac
Setpoint Range
0 - 0.099 "wc (0 - 0.0247 KPa)
0 - 0.99 "wc (0 - 0.247 KPa)
0 - 1.99 "wc (0 - 0.495 KPa)
0 - 4.99 "wc (0 - 1.242 KPa)
SPC 0.1 | SPC 1.0 | SPC 2.0 | SPC 5.0
B
C
D
Static Pressure Controller
SPC Series
Heating and
Supply Air
Cooling Unit
Bypass
Pressure tube
Damper
(at 2/3 of the run)
Output Signal
SPC
Deadband
0 - 0.0121"wc (0.003 KPa)
0 - 0.121 "wc (0.03 KPa)
0 - 0.243 "wc (0.06 KPa)
0 - 0.613 "wc (0.153 KPa)
B
A
E
F
Zone
Damper
Zone
Damper
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