
Series
3-1/16
[77.79]
4-13/16
[122.24]
2-5/8
[66.68]
4-1/4
[107.95]
1-1/4
[31.75]
UDL
PROCESS CONTROL
Universal Input Data Logger
Internal Temperature Sensor, Optional Internal Humidity Sensor 
and Display, Universal Inputs
Data Loggers, Indicating
The Series UDL Universal Input Data Loggers are available with 0, 2, or 4 universal
inputs. Each universal input can be individually configured to accept a thermocouple, RTD, 
ther mistor, vol tage, or c urrent input. All Series UDL data l ogger s have an internal 
temperature sensor and a digital input which can be used as a trigger to start logging or as 
a pulse counter for interfacing with flowmeters or other sensors with a pulse output. Optional 
features include an internal humidity sensor, an LCD display, and an external humidity and 
temperature sensor. The Series UDL loggers interface to the USB port of a PC. The unit 
includes software, USB connection cable and installed battery. 
Model 
UDL-000 
UDL-100 
UDL-010 
UDL-110 
UDL-002 
UDL-102 
UDL-012 
UDL-112 
UDL-004 
UDL-104 
UDL-014 
UDL-114
Sensors Included
Internal temperature sensor 
Internal temperature sensor w/ display 
Internal temperature/RH sensor 
Internal temperature/RH sensor w/ display 
Internal temperature sensor, 2 universal inputs 
Internal temperature sensor, 2 universal inputs w/ display 
Internal temperature sensor/RH, 2 universal inputs 
Internal temperature sensor/RH, 2 universal inputs w/ display 
Internal temperature sensor, 4 universal inputs 
Internal temperature sensor, 4 universal inputs w/ display 
Internal temperature sensor/RH, 4 universal inputs 
Internal temperature sensor/RH, 4 universal inputs w/ display
SPECIFICATIONS 
Inputs: RTD, thermocouple, thermistor, current, voltage, slidewire. 
Range: Internal temperature: -22 to 158°F (-30 to 70°C); Internal RH: 0 to 100%;
External temperature: -22 to 158°F (-30 to 70°C); External RH: 0 to 100%. 
Accuracy: Internal temperature: ±1°F (± 0.5°C); External temperature: ±1°F 
(±0.5°C) over 30 to 122°F (0 to 50°C), ±2°F (±1°C) over -30 to 32°F (-30 to 0°C) 
and 122 to 158°F (50 to 70°C); Internal/external RH: ±2.0% RH over 10% to 90%, 
±4.0% RH over 0 to 10% and 90 to 100% RH. 
Memory Size: 0 or 2 universal inputs: 62,000 readings; 4 universal inputs: 
128,000 readings. 
Resolution: All universal inputs: 16 Bit; Internal & external temperature: 12 Bit; 
Internal & external RH: 8 Bit.
Sampling Method: Stop when full or continuous logging (wrap when full). 
Sampling Rate: Selectable from 1 s to 24 hrs. 
Computer Requirements: Windows
Windows NT 
RAM, one free USB port. 
Power Requirements: 3.6 V AA lithium metal battery, installed functional, user 
replaceable.
Battery Life: 6 years (approx.). 
Alarms: Programmable high/low. 
Interface: USB port (cable included). 
Housing Material: ABS plastic. 
Weight: 5.8 oz (165 g). 
Agency Approval: CE, RoHS.
ACCESSORIES 
DL500-LITE*, Lite Version Windows 
DL500**, Full Version Windows 
UDL-RH, Remote Humidity Probe 
UDL-PS, Power Supply
*Free download from website 
**Need lite version also
®
, Windows® XP, and Windows Vista®operating system with 16 MB
® 
98, Windows® 2000, Windows® ME,
®
Operating System Software
®
Operating System Software Key
®
Windows 
Microsoft Corporation.
, Windows NT®, and Windows Vista®are registered trademarks of
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