DBK34A

Uninterruptable Power Supply (UPS) – DC PoweredFeatures• Provides back-up power to portabledata acquisition products when
the primary DC power source is­interrupted• Provides more than four hours ofoperation with typical portable dataacquisition products
The DBK34A rechargeable lead-acid­battery/UPS enables IOtech’s data acquisition ­systems to be used in situations where
the power is potentially interrupted during
an acquisition. If no DC power is available,
the DBK30A battery pack should be used
­instead of the DBK34A.
The DBK34A uses 14 to 28 VDC from theuser-supplied primary voltage source tocharge its internal lead-acid batteries andsupply DC power to the data acquisition
system. When the primary power sourcesags or is interrupted, the DBK34A immediately supplies the necessary power tothe data acquisition equipment so that theacquisition can continue uninterrupted.
For example, when a vehicle’s battery isused to power the acquisition equipment,
the DBK34A can be used to sustain power­during engine cranking.
For applications where the primary powersource can be interrupted for extended periods (e.g., >4 hours), an external auxiliary
lead-acid battery can be attached to theDBK34A. While the primary power source
is present, the DBK34A charges both its
internal ­battery and the auxiliary battery
while supplying power to the acquisition­equipment. When the primary power
is interrupted, the DBK34A powers theacquisition equipment equally from its
internal and auxiliary batteries.
The DBK34A requires external powerfrom either a DC source (such as a vehicle
battery), or an optional TR-40U AC toDC power supply, which can be modified
to connect to the external power screwterminal connection.

The DBK34A UPS module provides DC-supply voltage to IOtech’s portable data acquisition
products when the primary source of power is interrupted
The DBK34’s three LEDs clearly show
the present state of the system. The main
power indicator is illuminated whenever the­primary power source is present. The charging indicator shows that the system is being
powered by the primary power source andthat the internal and/or auxiliary batteries
are being charged. The charging indicator
will go off when the batteries are completely charged. The discharging indicatorilluminates when the primary power source
is not present or its voltage is not adequate
for energizing the acquisition equipment.
­During this state, the battery is being­discharged by the acquisition equipment.

Specifications

Indicators: Main Power, Charging, Discharging
Battery Type: Sealed lead-acid
Charging Voltages: 14 to 30V in 12V mode, 27.5 to30V in 24V mode
Output Voltage
When primary source is available: Input voltage
When primary source is unavailable: 10 to 12V
in 12V mode, 20 to 24V in 24V mode
Fuses: 15A for vehicle main battery, 7.5A for internalbatteries and auxiliary battery
Internal Battery Amp-Hours: 5A hours at 12V, 2.5A
hours at 24V
Charging Time: Approx. 300 minutes from 14 VDC
source when fully discharged*
Input Connector: Terminal block, 12 to 22 AWG wire
Output Connector: 5-pin DIN, locking
Dimensions: 279 mm W x 216 mm D x 35 mm H
(11” x 8.5” x 1.375”)
Weight:  7.2 lb ( 3.27 kg)

Ordering Information
Description
UPS module

Part No.
DBK34A

Accessories & Cables
External power supply, 100 to 240 VAC,
50W, 15 VDC; requires additional cable		 USA version		 European version5-pin locking DIN to 5-pin locking
DIN cable, for LogBooks, 6 in.
5-pin non-locking DIN to 5-pin DIN cablefor portable data acquisition products,
except LogBooks
Automobile cigarette lighter tobare, stripped leads, 6 ft.

TR-40U
CA-1
CA-216
CA-169CA-170CA-172

Product Compatibility✔ WaveBook✔ ZonicBook✔ LogBook✔ DaqBook* Not recommended for continuous discharge cycle
applications or left discharged for long periodsof time

Measurement Computing(508) 946-5100

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info@mccdaq.com

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