Specifications

AM25T Solid State Multiplexer

OPERATING TEMPERATURE

Standard: -40°C to +85°C

RTD accuracy ±0.4°C

OPERATING HUMIDITY

Noncondensing: 0 − 95%

DIMENSIONS

Length: 30.5 cm (12.0”)

Width: 5.10 cm (2.0")

Depth: 15.3 cm (6.0”)

WEIGHT

0.91 kg (2.0 lbs)

2.7 kg (6.0 lbs); Shipping

EXPANDABILITY (nominal)**

4 AM25Ts per CR1000

6 AM25Ts per CR23X

4 AM25Ts per CR10(X)

6 AM25Ts per 21X

7 AM25Ts per CR7 725 Card

MAXIMUM CABLE LENGTH

Multiplexers can be located up to 305 m (1000 ft) from the datalogger. When

lighting protection is required, do not exceed 152 m (500 ft) in cable length. The

spark gaps will not fire if the heavy ground wire is longer than 152 m (500 ft).

TYPICAL RELAY RESISTANCE

500 Ω

MAXIMUM SWITCHING CURRENT

25 mA; Switching currents greater than 25 mA will damage the relays and render

them unusable.

**Assumes sequential activation of multiplexers and that each datalogger channel

is uniquely dedicated. If your application requires additional multiplexing

capability, please consult CSI for application assistance.

1.2 Physical Description

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 1).