AM25T Solid-State Thermocouple Multiplexer
4
5. Overview
The AM25T is housed in an anodized aluminum case with a cover that will
help reduce temperature gradients across the AM25T’s terminal strips
(FIGURE
5-1
).
The terminal strips that run the length of the AM25T are for sensor
connections. All inputs are protected by spark gaps. All terminals accept
stripped and tinned lead wires up to 1.5 mm (0.059 inches) in diameter. A
strain-relief flange is located between the input terminals.
FIGURE 5-1. AM25T Solid-State Thermocouple Multiplexer with cover
6. Specifications
Power:
Unregulated 9.6 to 16 Vdc; 12 Vdc nominal
Current Drain
Quiescent:
0.5 mA
Active:
1.0 mA (typical)
Enable
Inactive:
< 0.9 V
Active:
3.5 to 5.0 V (7 V max.)
Clock
The relays are advanced on the falling edge of the clock pulse (transition
from >3.5 V to <1.5 V; 7 V max.). The minimum clock pulse width is
limited by the datalogger.
Minimum ON Time:
50 microseconds
Minimum OFF Time:
60 microseconds
