The
series A4 is a patent pending microprocessor based
controller for positive, negative, and differential
pressure as well as velocity and flow. The Series
A4 includes (2) 8A SPDT relays and an associated
software package that allows full configuration of
variables such as setpoints, dead band, engineering
units, flow coefficients, and more. The programming
is done from a user friendly menu on the OLED
display or uploaded using an OptiNLink™
programming key. The OLED also displays the exact
setpoints or other user defined variables during
normal operation. Furthermore, the menu structure
can be customized by moving variables to different
menu levels to accommodate many applications.
Compared to other mechanical products, the Series A4
has a significantly reduced depth, an improved look,
and better performance at a similar price.
SPECIFICATIONS Maximum
Pressure : Ranges ≤ 4” w.c. = 2 PSI;
Ranges ≥ 5”
w.c. = 10 PSI Media compatibility : Air and
compatible non combustible,
non corrosive gasses Accuracy*: Axxx0-xx - 1.00%;
Axxx1-xx - 0.50% Temperature Ranges: Compensated : -10° to 140°F (-23°
to 60°C) Operating : -10° to 140°F (-23°
to 60°C) Thermal Effect*: +/- 0.012% FS/°F Output Signal : 4-20 mA (option) Loop Resistance: 750 ..Max (for
internally sourced power);
1800 Max (for externally sourced power
of 36 VDC)
Power Supply: Universal 16-265 VAC or
VDC
Housing Material: Glass Filled Nylon
Enclosure Rating: Designed to meet NEMA
4X face; with
optional cover the entire product is
weatherproof
Relays: (2) SPDT 8 Amps @ 250 VAC, 5A
@30 VDC
Electrical Connections: screw terminals
Response Time: <100 ms
Display: 4 Digit, red LED, ½” digits;
OLED programming
display
Process Connection: Push on connection
for 3/16” tubing
Agency Approvals: Pending –UL, C-UL, CE
* Custom calibration including improved
accuracy and thermal effect
