1.3 Statement on CE Marking
1.4.1 CE Marking
It is the policy of OMEGA to comply with all worldwide safety and EMI/
EMC regulations that apply. OMEGA is constantly pursuing certification of its 
products to the European New Approach Directives. OMEGA will add the CE 
mark to every appropriate device upon certification. 
1.4 General Description 
1.4.1 General Description
TJ-USB: Type-K Thermocouple probes with direct USB connection features a 
rugged transition joint construction.
RH-USB: Relative Humidity/Temperature Probe with direct USB connection 
features a rugged Stainless Steel Housing.
UTC-USB: Patented Universal Thermocouple Connector/Converter with USB 
output.
PX409-USB: Pressure Transducer with direct USB connection, features a micro-
machined silicon sensor and 316L stainless steel wetted parts.
IR-USB: Infrared temperature sensor with direct USB connection.
1.4.2 Overall Dimensions
Figure 1-2.  TJ-USB Overall Dimensions
All models feature an integral 2m (6’) shielded output cable and free user 
software that converts your PC into a humidity, or temperature or pressure strip 
chart data logger.
Figure 1-3.  RH-USB Dimensions
Introduction
1
1-2
457.18 (18.0) or 609.6 (24.0)
STANDARD 
914.4 (36.0)
Ø 4.8 (3/16) or Ø 6.4 (1/4)
88.9 (3-1/2) 
28.8
(1-1/8) 
Ø 16 (5/8)
TJ-USB-CASS-316-18-K1
OMEGA.COM
131 (5.18)
2m (6 ft)
46 (1-13/16)
21
(13/16)
Ø 16 (5/16)
DIMENSIONS: mm (in)