Campbell Scientific AM16/32B Relay Multiplexer - Manual (Page 14)

AM16/32B Relay Multiplexer
Dimensions
Length: 23.9 cm (9.4 in)
Width: 10.2 cm (4.0 in)
Depth: 4.6 cm (1.8 in)
Weight: 693 g (1.5 lb) (approx.)
Mounting Tab
Hole Spacing:
1 x 3 x 9 in. Up to 1/8 in or 3 mm diameter
screws (see FIGURE 8-1).
Expandability** (nominal): 2 AM16/32Bs per CR800/CR850
4 AM16/32Bs per CR3000
4 AM16/32Bs per CR5000
4 AM16/32Bs per CR1000
4 AM16/32Bs per CR23X
4 AM16/32Bs per CR10(X)
4 AM16/32Bs per 21X
8 AM16/32Bs per CR7 725 Card
Maximum Cable Length: Depends on sensor and scan rate. In general,
longer lead lengths necessitate longer
measurement delays. Refer to datalogger
manual for details.
Maximum
Switching Current***:
500 mA
Contact Specifications
Initial contact resistance: <0.1 ohm max.
Initial contact bounce: <1 ms
Contact material: Gold clad silver alloy
Wiper to N.O. contact
capacitance: 0.5 pF
Typical low-current
(<30 mA) life: 5 x 10 7 operations
Relay Switching
Thermal emf: 0.3 µV typical; 0.5 µV maximum
Characteristics (applying 11.3 – 14 Vdc)
Operate
time: <10 ms over temperature and supply ranges
Break-before-make guaranteed by design.
Relays disengage from previous selected
channel before engaging next channel.
ESD
Air Discharge: complies with IEC61000-4-2, test level 4
(±15 kV)
Contact Discharge: complies with IEC61000-4-2, test level 4
(±8 kV)
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