Barksdale UAS3 Electronic Trip Amplifier

Barksdale's UAS3 Electronic Trip Amplifier and controller is the perfect companion to any sensing device that provides a 4-20 mA or 0-10 VDC analog output. Our UAS3 offers the unique ability to switch four discrete circuits in a single, compact unit. In addition to its four SPDT relays, the UAS3 comes standard with either a 4-20 mA or a 0-10 VDC analog output and a digital display with 1/2" tall, easy-to-read digits. A scalable bar graph display provides even greater visibility. Analog transducer outputs are scalable from 25% to 100% of the full adjustable range. A 12-bit microprocessor provides built-in diagnostics and allows for switch time delays and pressure cycling up to 100 times per second. Display units may be readily toggled between psi, bar, kPa, °C and °F units. For applications requiring precision control, multiple switchpoints, and extremely long life, the UAS3 Series is the ideal solution.

General Specifications*Accuracy:0.2% f. s.Linearity Error:±0.2% f. s. at 77°F (25°C)Repeatability:±0.01% f. s.Material:
Housing (Electronics):
Seal (Housing):
Keypad:
Cast aluminum
NeopreneR
Polyester fi lmMeasuring Ranges:(free scalable): -9999 to +9999Measuring Principle:Amplifier with 12 Bit A/D-converterElectrical Connection:Plug-in, terminal strip with 14 slots for 1.5mm2 , 14 AWG slotsSensor Connection:Plug 3-pin acc. to DIN 43650 / meter including electrical plug with molded cableCable Gland:1 x PG 13.5 side entry - standardPower Supply:18 - 30 VDC, reversed polarity protectedPower Consumption:appr. 350 mA at Ub = 24 VDC (without load)A/D-Converter:
Resolution:
Scanning Rate:
12 bit (4096 steps per measuring span)
1000 / sAnalog Inputs:
Current Input:
Voltage Input:
Resistance Input:
Temperature:
4 - 20 mA
0 - 10 VDC
0.5 - 100 kOhm
PT100 element acc. to IEC751Analog Output:
Current Output:
Load:

Load Influence:
Scanning Rate:
Voltage Output:
Rating:
Adjustment Range:
4-20 mA
Max. Rl = (Ub-12 V) / 20 mA
Rl = 600 Ohm at Ub = 24 VDC
0.3% / 100 Ohm
1 ms
0 - 10 V DC
max. 10 mA, short circuit-proof
25% to 100% f. s.Switching Output(s):
Contact Rating:

Cycles:
Switching Rate:
Delay:
Operation Time:
Status Display:
max. 120 VDC / 250 VAC
max. 120 W / 1250 VA
1 million at 24 VDC / 2 A
max. 20 / s
0 - 9.9 s adjustable
1 mS
S1 to S4 on LCD displayDigital Display:
Bar Graph:
Display Range:
Display Rate:
Display Unit:8-digit 14-segment LCD display, height 1/2 in (12 mm)
20-segment
-9999 to +9999 (scalable)
4/S
psi / bar / kPa / °C / °FOperating Elements:Keypad with easy response push buttonsTemperature Range:
Electronics:
Storage:
14° to 158°F (-10 °C to + 70 °C)
-22° to 176° F (-30°C to + 80°C)Temperature Influence:±0.05% f. s. / 10KCompensation Range:14° to 158°F (-10° to +70°C)Protection Class:IP65Dimensions (Housing):3-15/16 W X 5-5/16 H X 3-3/16 D
(100 W X 135 H X 80 D)Additional Features:8-digit 14-segment LCD display with bargraph and trend indication, microcontroller-controlled, self monitoring, all parameters are configured by keypad, selective keypad lock, high accuracy, quick scanning rate (1 ms).Weight:appr. 2 lb (1080 g)* See product confi gurator for additional options.

Electronic Trip Amplifier