2808B Specifications / 5-1
Section 5
SPECIFICATIONS
NOTE: The specifications listed here are common to all 2808 models described in this
manual. Specifications that are specific to each model are given in Sections 1A and 1B.
5.1 FUNCTIONAL SPECIFICATIONS
Current Loop Mode:
Supply Voltage 24.0 Vdc nominal
7.00 Vdc min. at Transmitter
10.0 Vdc min. with digital indicator option
37.0 Vdc max. at Transmitter
42.0 Vdc with external load specified
Reverse polarity protection provided
Output 4-20 mA dc output, two wire analog (ISA 50.1
Type, Class U2)
Current limited to 28 mA max.
Minimum current is 2 to 3.5 mA.
Voltage Mode:
Supply Voltage 6-42 Vdc
Reverse polarity protected to 90 Vdc
Supply Current 2.1 mA nominal
Output 1-5 Vdc (3-wire)
Calibration Adjustments: Span Adjustment:
Adj. Range is 16 to 100% URL.
Coarse Span set by Rotary switch package.
Fine Span set via 25-turn pot.
Zero Adjustment:
Adj. range is -600 to 600% LRL for
elevation and suppression.
Coarse Zero provided by DIP switch
selections. Fine Zero set via 25-turn pot.
Response Time & Damping: Time Constant:
(Time required for 63% change in output
with a 100% input change)
Damping OFF ≅ 0.16 ms
Damping ON = 300 ms +
20%
Damping:
User selectable by jumper circuit
To Next Page
Loading...
